Articles de revues : « Software architecture reconstruction »

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Schmidt, Frederick, Stephen MacDonell et Andy M. Connor. « Multi-Objective Reconstruction of Software Architecture ». International Journal of Software Engineering and Knowledge Engineering 28, n^o 06 (juin 2018) : 869–92. http://dx.doi.org/10.1142/s0218194018500262.

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Design erosion is a persistent problem within the software engineering discipline. Software designs tend to deteriorate over time and there is a need for tools and techniques that support software architects when dealing with legacy systems. This paper presents an evaluation of a search-based software engineering (SBSE) approach intended to recover high-level architecture designs of software systems by structuring low-level artifacts into high-level architecture artifact configurations. In particular, this paper describes the performance evaluation of a number of metaheuristic search algorithms applied to architecture reconstruction problems with high dimensionality in terms of objectives. These problems have been selected as representative of the typical challenges faced by software architects dealing with legacy systems and the results inform the ongoing development of a software tool that supports the analysis of trade-offs between different reconstructed architectures.

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Stoermer, Christoph, Anthony Rowe, Liam O'Brien et Chris Verhoef. « Model-centric software architecture reconstruction ». Software : Practice and Experience 36, n^o 4 (2006) : 333–63. http://dx.doi.org/10.1002/spe.699.

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KANG, SUNGWON, SEONAH LEE et DANHYUNG LEE. « A FRAMEWORK FOR TOOL-BASED SOFTWARE ARCHITECTURE RECONSTRUCTION ». International Journal of Software Engineering and Knowledge Engineering 19, n^o 02 (mars 2009) : 283–305. http://dx.doi.org/10.1142/s0218194009004167.

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For software with nontrivial size and complexity, it is not feasible to manually perform architecture reconstruction. Therefore it is essential for the software architecture miner who is mining architecture from the existing software to have a well-defined software architecture reconstruction process that helps incorporate as much tool use as possible at the appropriate steps of architecture reconstruction. There are some existing software architecture reconstruction frameworks but they do not provide guidelines on how to systematically utilize tools to produce architecture views for a reconstruction purpose. In this paper, we propose a framework for tool-based software architecture reconstruction. This framework consists of a generic process for software architecture reconstruction and the steps to derive from it a concrete tool-based process to be used for actual architecture reconstruction. The architecture miner can use this framework to analyze source code for modifying source code as well as to reconstruct software architecture from source code.

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Prajapati, Amarjeet, et Zong Woo Geem. « Harmony Search-Based Approach for Multi-Objective Software Architecture Reconstruction ». Mathematics 8, n^o 11 (31 octobre 2020) : 1906. http://dx.doi.org/10.3390/math8111906.

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The success of any software system highly depends on the quality of architectural design. It has been observed that over time, the quality of software architectural design gets degraded. The software system with poor architecture design is difficult to understand and maintain. To improve the architecture of a software system, multiple design goals or objectives (often conflicting) need to be optimized simultaneously. To address such types of multi-objective optimization problems a variety of metaheuristic-oriented computational intelligence algorithms have been proposed. In existing approaches, harmony search (HS) algorithm has been demonstrated as an effective approach for numerous types of complex optimization problems. Despite the successful application of the HS algorithm on different non-software engineering optimization problems, it gained little attention in the direction of architecture reconstruction problem. In this study, we customize the original HS algorithm and propose a multi-objective harmony search algorithm for software architecture reconstruction (MoHS-SAR). To demonstrate the effectiveness of the MoHS-SAR, it has been tested on seven object-oriented software projects and compared with the existing related multi-objective evolutionary algorithms in terms of different software architecture quality metrics and metaheuristic performance criteria. The experimental results show that the MoHS-SAR performs better compared to the other related multi-objective evolutionary algorithms.

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Qiu, Dehong, Qifeng Zhang et Shaohong Fang. « Reconstructing Software High-Level Architecture by Clustering Weighted Directed Class Graph ». International Journal of Software Engineering and Knowledge Engineering 25, n^o 04 (mai 2015) : 701–26. http://dx.doi.org/10.1142/s0218194015500072.

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Software architecture reconstruction plays an important role in software reuse, evolution and maintenance. Clustering is a promising technique for software architecture reconstruction. However, the representation of software, which serves as clustering input, and the clustering algorithm need to be improved in real applications. The representation should contain appropriate and adequate information of software. Furthermore, the clustering algorithm should be adapted to the particular demands of software architecture reconstruction well. In this paper, we first extract Weighted Directed Class Graph (WDCG) to represent object-oriented software. WDCG is a structural and quantitative representation of software, which contains not only the static information of software source code but also the dynamic information of software execution. Then we propose a WDCG-based Clustering Algorithm (WDCG-CA) to reconstruct high-level software architecture. WDCG-CA makes full use of the structural and quantitative information of WDCG, and avoids wrong compositions and arbitrary partitions successfully in the process of reconstructing software architecture. We introduce four metrics to evaluate the performance of WDCG-CA. The results of the comparative experiments show that WDCG-CA outperforms the comparative approaches in most cases in terms of the four metrics.

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Ducasse, S., et D. Pollet. « Software Architecture Reconstruction : A Process-Oriented Taxonomy ». IEEE Transactions on Software Engineering 35, n^o 4 (juillet 2009) : 573–91. http://dx.doi.org/10.1109/tse.2009.19.

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Guamán, Daniel, Jennifer Pérez, Jessica Diaz et Carlos E. Cuesta. « Towards a reference process for software architecture reconstruction ». IET Software 14, n^o 6 (1 décembre 2020) : 592–606. http://dx.doi.org/10.1049/iet-sen.2019.0246.

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Arcelli Fontana, Francesca, et Marco Zanoni. « A tool for design pattern detection and software architecture reconstruction ». Information Sciences 181, n^o 7 (1 avril 2011) : 1306–24. http://dx.doi.org/10.1016/j.ins.2010.12.002.

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Müller, Jan, Dirk Fimmel, Renate Merker et Rainer Schaffer. « A Hardware–Software System for Tomographic Reconstruction ». Journal of Circuits, Systems and Computers 12, n^o 02 (avril 2003) : 203–29. http://dx.doi.org/10.1142/s021812660300074x.

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We present the design of a hardware–software system for the reconstruction of tomographic images. In a systematic approach we developed the parallel processor array, a reconfigurable hardware controller and processing kernel, and the software control up to the integration into a graphical user interface. The processor array acting as a hardware accelerator, is constructed using theoretical results and methods of application-specific hardware design. The reconfigurability of the system allows one to utilize a much wider realm of algorithms than the three reconstruction algorithms implemented so far. In the paper we discuss the system design at different levels from algorithm transformations to board development.

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Allam, Atef, et Wael Deabes. « Model-Based Hardware-Software Codesign of ECT Digital Processing Unit ». Modelling and Simulation in Engineering 2021 (30 mars 2021) : 1–14. http://dx.doi.org/10.1155/2021/4757464.

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Image reconstruction algorithm and its controller constitute the main modules of the electrical capacitance tomography (ECT) system; in order to achieve the trade-off between the attainable performance and the flexibility of the image reconstruction and control design of the ECT system, hardware-software codesign of a digital processing unit (DPU) targeting FPGA system-on-chip (SoC) is presented. Design and implementation of software and hardware components of the ECT-DPU and their integration and verification based on the model-based design (MBD) paradigm are proposed. The inner-product of large vectors constitutes the core of the majority of these ECT image reconstruction algorithms. Full parallel implementation of large vector multiplication on FPGA consumes a huge number of resources and incurs long combinational path delay. The proposed MBD of the ECT-DPU tackles this problem by crafting a parametric segmented parallel inner-product architecture so as to work as the shared hardware core unit for the parallel matrix multiplication in the image reconstruction and control of the ECT system. This allowed the parameterized core unit to be configured at system-level to tackle large matrices with the segment length working as a design degree of freedom. It allows the trade-off between performance and resource usage and determines the level of computation parallelism. Using MBD with the proposed segmented architecture, the system design can be flexibly tailored to the designer specifications to fulfill the required performance while meeting the resources constraint. In the linear-back projection image reconstruction algorithm, the segmentation scheme has exhibited high resource saving of 43% and 71% for a small degradation in a frame rate of 3% and 14%, respectively.

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Qu, Zhong. « Algebraic Reconstruction Technique in Image Reconstruction Based on Data Mining ». International Journal of Data Warehousing and Mining 2, n^o 3 (juillet 2006) : 1–15. http://dx.doi.org/10.4018/jdwm.2006070101.

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Collins, Nicolas. « Improvising with Architecture ». Resonance 2, n^o 2 (2021) : 168–81. http://dx.doi.org/10.1525/res.2021.2.2.168.

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In Pea Soup a self-stabilizing phase shift network nudges the pitch of audio feedback to a different resonant frequency every time the feedback starts to build. The familiar shriek is replaced with unstable patterns of hollow tones, a site-specific raga reflecting the acoustical personality of the room. These architectural melodies can be influenced by movement in the space, other sounds, or even by a draft of cold air. This essay covers the history of the work, from its earliest iteration in hardware when the author was a student in the 1970s through its software reconstruction in the early 2000s, as well as its influence on the author’s subsequent musical projects.

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Abella, M., J. J. Vaquero, A. Sisniega, J. Pascau, A. Udías, V. García, I. Vidal et M. Desco. « Software architecture for multi-bed FDK-based reconstruction in X-ray CT scanners ». Computer Methods and Programs in Biomedicine 107, n^o 2 (août 2012) : 218–32. http://dx.doi.org/10.1016/j.cmpb.2011.06.008.

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Huang, Guoxian, et Lei Wang. « An FPGA-Based Architecture for High-Speed Compressed Signal Reconstruction ». ACM Transactions on Embedded Computing Systems 16, n^o 3 (7 juillet 2017) : 1–23. http://dx.doi.org/10.1145/3056481.

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Kortelainen, Matti J., Martin Kwok, Taylor Childers, Alexei Strelchenko et Yunsong Wang. « Porting CMS Heterogeneous Pixel Reconstruction to Kokkos ». EPJ Web of Conferences 251 (2021) : 03034. http://dx.doi.org/10.1051/epjconf/202125103034.

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Programming for a diverse set of compute accelerators in addition to the CPU is a challenge. Maintaining separate source code for each architecture would require lots of effort, and development of new algorithms would be daunting if it had to be repeated many times. Fortunately there are several portability technologies on the market such as Alpaka, Kokkos, and SYCL. These technologies aim to improve the developer’s productivity by making it possible to use the same source code for many different architectures. In this paper we use heterogeneous pixel reconstruction code from the CMS experiment at the CERNL LHC as a realistic use case of a GPU-targeting HEP reconstruction software, and report experience from prototyping a portable version of it using Kokkos. The development was done in a standalone program that attempts to model many of the complexities of a HEP data processing framework such as CMSSW. We also compare the achieved event processing throughput to the original CUDA code and a CPU version of it.

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Ardizzone, Edoardo, Antonio Chella et Salvatore Gaglio. « Hybrid architecture for shape reconstruction and object recognition ». International Journal of Intelligent Systems 11, n^o 12 (7 décembre 1998) : 1115–33. http://dx.doi.org/10.1002/(sici)1098-111x(199612)11:12<1115 ::aid-int5>3.0.co;2-q.

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Pierrot-Deseilligny, Marc, Livio De Luca et Fabio Remondino. « Automated Image-Based Procedures for Accurate Artifacts 3D Modeling and Orthoimage Generation ». Geoinformatics FCE CTU 6 (21 décembre 2011) : 291–99. http://dx.doi.org/10.14311/gi.6.36.

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The accurate 3D documentation of architectures and heritages is getting very common and required in different application contexts. The potentialities of the image-based approach are nowadays very well-known but there is a lack of reliable, precise and flexible solutions, possibly open-source, which could be used for metric and accurate documentation or digital conservation and not only for simple visualization or web-based applications. The article presents a set of photogrammetric tools developed in order to derive accurate 3D point clouds and orthoimages for the digitization of archaeological and architectural objects. The aim is also to distribute free solutions (software, methodologies, guidelines, best practices, etc.) based on 3D surveying and modeling experiences, useful in different application contexts (architecture, excavations, museum collections, heritage documentation, etc.) and according to several representations needs (2D technical documentation, 3D reconstruction, web visualization, etc.).

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Kudo, Tomoo, Yoshihito Shimazu, Hisao Yagishita, Toshiyuki Izumo, Yuuichi Soeno, Kaori Sato, Yuji Taya et Takaaki Aoba. « Three-Dimensional Reconstruction of Oral Tongue Squamous Cell Carcinoma at Invasion Front ». International Journal of Dentistry 2013 (2013) : 1–11. http://dx.doi.org/10.1155/2013/482765.

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We conducted three-dimensional (3D) reconstruction of oral tongue squamous cell carcinoma (OTSCC) using serial histological sections to visualize the architecture of invasive tumors. Fourteen OTSCC cases were collected from archival paraffin-embedded specimens. Based on a pathodiagnostic survey of whole cancer lesions, a core tissue specimen (3 mm in diameter) was dissected out from the deep invasion front using a paraffin tissue microarray. Serial sections (4 μm thick) were double immunostained with pan-cytokeratin and Ki67 antibodies and digitized images were acquired using virtual microscopy. For 3D reconstruction, image registration and RGB color segmentation were automated using ImageJ software to avoid operator-dependent subjective errors. Based on the 3D tumor architecture, we classified the mode of invasion into four types: pushing and bulky architecture; trabecular architecture; diffuse spreading; and special forms. Direct visualization and quantitative assessment of the parenchymal-stromal border provide a new dimension in our understanding of OTSCC architecture. These 3D morphometric analyses also ascertained that cell invasion (individually and collectively) occurs at the deep invasive front of the OTSCC. These results demonstrate the advantages of histology-based 3D reconstruction for evaluating tumor architecture and its potential for a wide range of applications.

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Ginat, David. « Board reconstruction ». ACM SIGCSE Bulletin 35, n^o 4 (décembre 2003) : 25–26. http://dx.doi.org/10.1145/960492.960516.

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LEGRAND, I. C., U. GENSCH, H. LEICH et P. WEGNER. « DESIGN AND SIMULATION OF THE ON-LINE TRIGGER AND RECONSTRUCTION FARM FOR THE HERA-B EXPERIMENT ». International Journal of Modern Physics C 06, n^o 04 (août 1995) : 489–94. http://dx.doi.org/10.1142/s0129183195000332.

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The common third level trigger and forth level reconstruction farm for the future HERA-B experiment will have to perform full on-line event reconstruction and calibration for an expected input rate of 2000 events/s. More than a hundred powerful RISC processors connected in a network capable of distributing several hundreds of MB/s with low latency are likely to be necessary for this task. Proper simulation of the real time multi-processor systems is central for an optimal design (hardware and software protocol) of a scalable and flexible parallel data processing architecture. A discrete event, process oriented simulation developed in concurrent μC++ is used as a framework for modelling and evaluating different farm architectures. An object oriented graphic interface to the simulation allows the monitoring of various features and provides an easier way to optimize the system.

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Argyrou, M., P. Paschalis, D. Maintas et E. Stiliaris. « Tomographic Image Reconstruction based on Artificial Neural Network (ANN) Techniques ». HNPS Proceedings 18 (23 novembre 2019) : 89. http://dx.doi.org/10.12681/hnps.2542.

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A new approach for tomographic image reconstruction from projections using Artificial Neural Network (ANN) techniques is presented in this work. The design of the proposed reconstruction system is based on a simple but efficient network architecture, which best utilizes all available input information. Due to the computational complexity, which grows quadratically with the image size, the training phase of the system is characterized by relatively large CPU times. The trained network, on the contrary, is able to provide all necessary information in a quick and efficient way giving results comparable to other time consuming iterative reconstruction algorithms. The performance of the network studied with a large number of software phantoms is directly compared to the well known Algebraic Reconstruction Technique (ART). For a given image and projections size, the role of the hidden layers in the network architecture is examined and the quality dependence of the reconstructed image on the size of the geometrical patterns used in the training phase is also investigated.

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Musavi, Seyyedeh Atefeh, et Mahmoud Reza Hashemi. « An Ontology-Based Method for HW/SW Architecture Reconstruction ». IEEE Transactions on Computers 68, n^o 7 (1 juillet 2019) : 1007–18. http://dx.doi.org/10.1109/tc.2019.2895329.

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Cercos-Pita, J. L., I. R. Cal, D. Duque et G. Sanjuán de Moreta. « NASAL-Geom, a free upper respiratory tract 3D model reconstruction software ». Computer Physics Communications 223 (février 2018) : 55–68. http://dx.doi.org/10.1016/j.cpc.2017.10.008.

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Lu, Zhou. « Construction of the 3D Reconstruction System of Building Construction Scene Based on Deep Learning ». Scientific Programming 2021 (14 décembre 2021) : 1–9. http://dx.doi.org/10.1155/2021/5839391.

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The increasing complexity and enormity of construction projects, as well as the fact that the actual operation of construction schedule management still mainly relies on traditional manual management methods, have led to low efficiency of construction schedule management and caused many construction projects to have cost overruns and legal disputes due to schedule delays. Existing 3D reconstruction algorithms often lead to significant voids, distortions, or blurred parts in the reconstructed 3D models, while the machine learning-based 3D reconstruction algorithms are often only to reconstruct simple separated objects and represent them as 3D boxes. A novel architecture of semisupervised 3D reconstruction algorithm is proposed. The algorithm iteratively improves the quality of the original 3D reconstruction model by training a generative adversarial network model to a converged state. Only the prior observed 2D images are required as weakly supervised samples, without any dependence on prior knowledge of the 3D structure shape or reference observations. Experimental results show that this algorithmic framework has significant advantages over the current state-of-the-art 3D reconstruction methods on the standard 3D reconstruction test set.

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Popova, Dimitrina. « Digital Three-Dimensional Reconstruction of an Old House in the Town of Sungurlare from the Architectural Archive at the Institute of Art Studies ». Cultural and Historical Heritage : Preservation, Presentation, Digitalization 8, n^o 2 (26 décembre 2022) : 21–34. http://dx.doi.org/10.55630/kinj.2022.080202.

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This research is dedicated to preserving and studying architectural memory. The attention is focused on the architectural archive at the Institute of Art Studies at the Bulgarian Academy of Sciences where a cultural architectural heritage is collected over decades. Specifically, research interest is towards the collections in fund "Drawings and Surveys" conducted on the case study of a 19th century house of the Hrusanovi brothers in the town of Sungurlare. The building was depicted in plans and facades on paper 60 years ago. In development the knowledge on this old architecture is boosted by transforming it into a digital three-dimensional structure through two software applications. The analysis consists of reading of the archived drawings in the context of reconstruction and achieving a high level of authenticity in it.

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Evers, J. F., S. Schmitt, M. Sibila et C. Duch. « Progress in Functional Neuroanatomy : Precise Automatic Geometric Reconstruction of Neuronal Morphology From Confocal Image Stacks ». Journal of Neurophysiology 93, n^o 4 (avril 2005) : 2331–42. http://dx.doi.org/10.1152/jn.00761.2004.

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Dendritic architecture provides the structural substrate for myriads of input and output synapses in the brain and for the integration of presynaptic inputs. Understanding mechanisms of evolution and development of neuronal shape and its respective function is thus a formidable problem in neuroscience. A fundamental prerequisite for finding answers is a precise quantitative analysis of neuronal structure in situ and in vivo. Therefore we have developed a tool set for automatic geometric reconstruction of neuronal architecture from stacks of confocal images. It provides exact midlines, diameters, surfaces, volumes, and branch point locations and allows analysis of labeled molecule distribution along neuronal surfaces as well as direct export into modeling software. We show the high accuracy of geometric reconstruction and the analysis of putative input synapse distribution throughout entire dendritic trees from in situ light microscopy preparations as a possible application. The binary version of the reconstruction module is downloadable at no cost.

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An, Yang, Changsheng Zhang et Xuanyu Zheng. « Knowledge reconstruction assisted evolutionary algorithm for neural network architecture search ». Knowledge-Based Systems 264 (mars 2023) : 110341. http://dx.doi.org/10.1016/j.knosys.2023.110341.

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Li, Chaoneng, Guanwen Feng, Yiran Jia, Yunan Li, Jian Ji et Qiguang Miao. « RETAD ». International Journal of Data Warehousing and Mining 19, n^o 2 (13 janvier 2023) : 1–14. http://dx.doi.org/10.4018/ijdwm.316460.

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Due to the rapid advancement of wireless sensor and location technologies, a large amount of mobile agent trajectory data has become available. Intelligent city systems and video surveillance all benefit from trajectory anomaly detection. The authors propose an unsupervised reconstruction error-based trajectory anomaly detection (RETAD) method for vehicles to address the issues of conventional anomaly detection, which include difficulty extracting features, are susceptible to overfitting, and have a poor anomaly detection effect. RETAD reconstructs the original vehicle trajectories through an autoencoder based on recurrent neural networks. The model obtains moving patterns of normal trajectories by eliminating the gap between the reconstruction results and the initial inputs. Anomalous trajectories are defined as those with a reconstruction error larger than anomaly threshold. Experimental results demonstrate that the effectiveness of RETAD in detecting anomalies is superior to traditional distance-based, density-based, and machine learning classification algorithms on multiple metrics.

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Lahouli, Rihab, Manel Ben-Romdhane, Chiheb Rebai et Dominique Dallet. « Mixed baseband architecture based on FBD ΣΔ–based ADC for multistandard receivers ». ACTA IMEKO 4, n^o 3 (27 septembre 2015) : 14. http://dx.doi.org/10.21014/acta_imeko.v4i3.258.

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This paper presents the design and simulation results of a novel mixed baseband stage for a frequency band decomposition (FBD) analog-to-digital converter (ADC) in a multistandard receiver. The proposed FBD-based ADC architecture is flexible with programmable parallel branches composed of discrete time (DT) 4th order single-bit Sigma-Delta modulators. The mixed baseband architecture uses a single non-programmable anti-aliasing filter (AAF) avoiding the use of an automatic gain control (AGC) circuit. System level analysis proved that the proposed FBD architecture satisfies design specifications of the software defined radio (SDR) receiver. In this paper, the authors focus on the Butterworth AAF filter design for a multistandard receiver. Besides, theoretical analysis of the reconstruction stage for UMTS test case is discussed. It leads to a complicated system of equations and high digital filter orders. To reduce the digital reconstruction stage complexity, the authors propose an optimized digital reconstruction stage architecture design. The demodulation-based digital reconstruction stage using two decimation stages has been implemented using MATLAB/SIMULINK. Technical choices and performances are discussed. The computed signal-to-noise ratio (SNR) of the MATLAB/SIMULINK FBD ADC model is equal to at least 75 dB which satisfies the dynamic range required for UMTS signals. Next to hardware implementation with quantized filters coefficients, the authors implemented their proposition in VHDL in a SysGen environment. The measured SNR of the hardware implementation is equal to 74.08 dB which satisfies the required dynamic range of UMTS signals.

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Allen, Matthew. « The Genius of Bureaucracy : SOM’s Hajj Terminal and Geiger Berger Associates’ Form-Finding Software ». Journal of the Society of Architectural Historians 80, n^o 4 (1 décembre 2021) : 416–35. http://dx.doi.org/10.1525/jsah.2021.80.4.416.

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Abstract Through a reconstruction of the murky process involved in the design of the Hajj Terminal at the King Abdulaziz International Airport in Jeddah, Saudi Arabia, by Skidmore, Owings & Merrill, Matthew Allen examines how computational expertise negotiated a new role for itself within the hierarchy of late twentieth-century corporate architecture. In The Genius of Bureaucracy: SOM’s Hajj Terminal and Geiger Berger Associates’ Form-Finding Software he explores how Henry-Russell Hitchcock’s rubric of “the architecture of genius and the architecture of bureaucracy” played out in a situation where the two ideals converged. Unusual among other large corporate firms, SOM not only invested in computation early on but also leveraged computer-generated images to promote its practice. Examination of SOM’s printouts from the Hajj Terminal project reveals the pervasive presence of the lower ranks of the corporate hierarchy—particularly the engineering subconsultants Geiger Berger Associates, who developed unique software for engineering tensile structures. In this contest between decisive SOM designers such as Gordon Bunshaft and Fazlur Khan and engineering paperwork, a new understanding of “the computer” emerged that congealed around the concept of form-finding, or “smart” digital modeling.

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Rodríguez-Santiago, Armando Levid, José Aníbal Arias-Aguilar, Hiroshi Takemura et Alberto Elías Petrilli-Barceló. « A Deep Learning Architecture for 3D Mapping Urban Landscapes ». Applied Sciences 11, n^o 23 (6 décembre 2021) : 11551. http://dx.doi.org/10.3390/app112311551.

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In this paper, an approach through a Deep Learning architecture for the three-dimensional reconstruction of outdoor environments in challenging terrain conditions is presented. The architecture proposed is configured as an Autoencoder. However, instead of the typical convolutional layers, some differences are proposed. The Encoder stage is set as a residual net with four residual blocks, which have been provided with the necessary knowledge to extract the feature maps from aerial images of outdoor environments. On the other hand, the Decoder stage is set as a Generative Adversarial Network (GAN) and called a GAN-Decoder. The proposed network architecture uses a sequence of the 2D aerial image as input. The Encoder stage works for the extraction of the vector of features that describe the input image, while the GAN-Decoder generates a point cloud based on the information obtained in the previous stage. By supplying a sequence of frames that a percentage of overlap between them, it is possible to determine the spatial location of each generated point. The experiments show that with this proposal it is possible to perform a 3D representation of an area flown over by a drone using the point cloud generated with a deep architecture that has a sequence of aerial 2D images as input. In comparison with other works, our proposed system is capable of performing three-dimensional reconstructions in challenging urban landscapes. Compared with the results obtained using commercial software, our proposal was able to generate reconstructions in less processing time, with less overlapping percentage between 2D images and is invariant to the type of flight path.

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Formica, Andrea, Riccardo Maria Bianchi et Alessandro De Salvo. « A new mechanism to use the Conditions Database REST API to serve the ATLAS detector description ». EPJ Web of Conferences 214 (2019) : 04032. http://dx.doi.org/10.1051/epjconf/201921404032.

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Efficient and fast access to the detector description of the ATLAS experiment is needed for many tasks, at different steps of the data chain: from detector development to reconstruction, from simulation to data visualization. Until now, the detector description was only accessible through dedicated services integrated into the experiment’s software framework, or by the use of external applications. In this work, we explore the possibility of using a web access-based conditions database to store and serve the detector description, aiming at a simplification of the software architecture of the experiment and a reduction in the number of software packages to be maintained.

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Hernández-Juárez, Sarahí, Aldo Rodrigo Mejía-Rodríguez et Edgar R. Arce-Santana. « Pulmonary dynamics of anatomical structures of interest in 4DCT imaging ». Imaging and Radiation Research 3, n^o 1 (20 février 2004) : 23. http://dx.doi.org/10.24294/irr.v3i1.1723.

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The present work shows an application of the Chan-Vese algorithm for the semi-automatic segmentation of anatomical structures of interest (lungs and lung tumor) in 4DCT images of the thorax, as well as their three-dimensional reconstruction. The segmentation and reconstruction were performed on 10 CT images, which make up an inspiration-expiration cycle. The maximum displacement was calculated for the case of the lung tumor using the reconstructions of the onset of inspiration, the onset of expiration, and the voxel information. The proposed method achieves appropriate segmentation of the studied structures regardless of their size and shape. The three-dimensional reconstruction allows us to visualize the dynamics of the structures of interest throughout the respiratory cycle. In the future, it is expected to have more evidence of the good performance of the proposed method and to have the feedback of the clinical expert, since the knowledge of the characteristics of anatomical structures, such as their dimension and spatial position, helps in the planning of Radiotherapy (RT) treatments, optimizing the radiation dose to cancer cells and minimizing it in healthy organs. Therefore, the information found in this work may be of interest for the planning of RT treatments.

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Britzger, Daniel, Sergey Levonian, Stefan Schmitt et David South. « Preservation through modernisation : The software of the H1 experiment at HERA ». EPJ Web of Conferences 251 (2021) : 03004. http://dx.doi.org/10.1051/epjconf/202125103004.

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The lepton–proton collisions produced at the HERA collider represent a unique high energy physics data set. A number of years after the end of collisions, the data collected by the H1 experiment, as well as the simulated events and all software needed for reconstruction, simulation and data analysis, were migrated into a preserved operational mode at DESY. A recent modernisation of the H1 software architecture has been performed, which will not only facilitate on going and future data analysis efforts with the new inclusion of modern analysis tools, but also ensure the long-term availability of the H1 data and associated software. The present status of the H1 software stack, the data, simulations and the currently supported computing platforms for data analysis activities are discussed.

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Boutsikas, Efrosyni. « The Contribution of ‘Total Environment’ Reconstructions in Interpreting Ancient Greek Experience of Ritual Spaces ». Open Archaeology 5, n^o 1 (31 décembre 2019) : 540–52. http://dx.doi.org/10.1515/opar-2019-0033.

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AbstractThe temple of Epikourean Apollo in Bassae has long been suspected to have been constructed with astronomical considerations, aimed at influencing ancient religious experience. The study presented here involves the use of Virtual Reality software to reconstruct the temple in its original position and orientation, combined with an accurate reconstruction of the sun’s position during the Classical period. The aim is to test the hypothesis of deliberate solar considerations associated with the temple’s east entrance. The reconstruction also discusses the application of Virtual Reality Models (VRM) and their potential impact on understanding ancient spatial movement and memory, emotionality and cognition. In addition, it explores the possibility of ancient natural light manipulation in enhancing experience of religious architecture. This paper not only presents the first VRM of Apollo’s temple, but also a model with an accurate reconstruction of the sun’s position at specific moments in the year. The importance of such reconstructions in understanding religious experience is exemplified. A great deal is revealed about the proposed solar effect in relation to human observation, and the connotations of such an effect in specific religious contexts. This study could facilitate discussion on the contribution of digital technology in understanding ancient Greek ritual experience.

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Poloprutský, Zdeněk, Eva Frommeltová, Josef Münzberger et Kateřina Sedlická. « 3D DIGITAL RECONSTRUCTION OF DEFUNCT RURAL BUILDINGS BASED ON ARCHIVAL SOURCES ». Stavební obzor - Civil Engineering Journal 31, n^o 1 (30 avril 2022) : 196–210. http://dx.doi.org/10.14311/cej.2022.01.0015.

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This paper deals with the specifics and working procedures for 3D digital reconstructions of defunct buildings of rural architecture. The resulting 3D models are to be used for presentation and educational activities intended for the lay and professional public and are based on archival sources - archival 2D metric survey documentation (drawings and photographs), written sources. Another requirement is the possibility of presentation on the internet within a parallel developing web platform. SketchUp 2021 Pro software, extended by plug-ins, is used for the 3D modelling process.

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Banasiak, Robert, Radosław Wajman, Tomasz Jaworski, Paweł Fiderek, Paweł Kapusta et Dominik Sankowski. « TWO-PHASE FLOW REGIME THREE-DIMENSONAL VISUALIZATION USING ELECTRICAL CAPACITANCE TOMOGRAPHY – ALGORITHMS AND SOFTWARE ». Informatics Control Measurement in Economy and Environment Protection 7, n^o 1 (30 mars 2017) : 11–16. http://dx.doi.org/10.5604/01.3001.0010.4575.

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This paper presents the software for comprehensive processing and visualization of 2D and 3D electrical tomography data. The system name as TomoKIS Studio has been developed in the frame of DENIDIA international research project and has been improved in the frame of Polish Ministry of Science and Higher Education Project no 4664/B/T02/2010/38. This software is worldwide unique because it simultaneously integrates the process of tomographic data acquisition, numerical FEM modeling and tomographic images reconstruction. The software can be adapted to specific industrial applications, particularly to monitoring and diagnosis of two-phase flows. The software architecture is composed of independent modules. Their combination offers calibration, configuration and full-duplex communication with any tomographic acquisition system with known and open communication protocol. The other major features are: online data acquisition and processing, online and offline 2D/3D images linear and nonlinear reconstruction and visualization as well as raw data and tomograms processing. Another important ability is 2D/3D ECT sensor construction using FEM modeling. The presented software is supported with the multi-core GPU technology and parallel computing using Nvidia CUDA technology.

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To, T., D. Nguyen et G. Tran. « Automated 3D architecture reconstruction from photogrammetric structure-and-motion : A case study of the One Pilla pagoda, Hanoi, Vienam ». ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-7/W3 (30 avril 2015) : 1425–29. http://dx.doi.org/10.5194/isprsarchives-xl-7-w3-1425-2015.

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Heritage system of Vietnam has decline because of poor-conventional condition. For sustainable development, it is required a firmly control, space planning organization, and reasonable investment. Moreover, in the field of Cultural Heritage, the use of automated photogrammetric systems, based on Structure from Motion techniques (SfM), is widely used. With the potential of high-resolution, low-cost, large field of view, easiness, rapidity and completeness, the derivation of 3D metric information from Structure-and- Motion images is receiving great attention. In addition, heritage objects in form of 3D physical models are recorded not only for documentation issues, but also for historical interpretation, restoration, cultural and educational purposes. The study suggests the archaeological documentation of the “One Pilla” pagoda placed in Hanoi capital, Vietnam. The data acquired through digital camera Cannon EOS 550D, CMOS APS-C sensor 22.3 × 14.9 mm. Camera calibration and orientation were carried out by VisualSFM, CMPMVS (Multi-View Reconstruction) and SURE (Photogrammetric Surface Reconstruction from Imagery) software. The final result represents a scaled 3D model of the One Pilla Pagoda and displayed different views in MeshLab software.

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Shahzad, Zaigham, Fabian Kellermeier, Emily M. Armstrong, Simon Rogers, Guillaume Lobet, Anna Amtmann et Adrian Hills. « EZ-Root-VIS : A Software Pipeline for the Rapid Analysis and Visual Reconstruction of Root System Architecture ». Plant Physiology 177, n^o 4 (12 juin 2018) : 1368–81. http://dx.doi.org/10.1104/pp.18.00217.

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Flego, Clio. « Forensic Architecture : A New Photographic Language in a Factual Era ». Membrana Journal of Photography, Vol. 3, no. 1 (2018) : 70–75. http://dx.doi.org/10.47659/m4.070.art.

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A group of visual activists, architects, software developers and archaeologists as well as a multicultural team composed of artists, investigative journalists and lawyers – an organic organization. Forensic Architecture ‘Investigative aesthetic’ is based on visual aggregation on data allowing viewers to enhance their perception-cognition of events by the integrated use of augmented photography. Their works have been presented in front of a court, but also exhibited at international shows all around the world. FA expanded use of photography, integrating in the urbanistic reconstruction of frames of any kind of multimedia information collected, consider it not simply as a medium, but as a proper tool for triggering critical reflections and political action. Forensic Architecture have mainly been investigating the area of conflicts with the aim to present counter- investigation on unclear circumstances, often underlining social constructs in the public forum. The particular role that FA plays, claiming social truth and assigning to photography the function to be a “civil act,” remarks its place in the history of war photography, and underlines the importance of also having a contra-culture in a post- industrial society, permeated by the presence of technology. Keywords: evidence, Forensic Architecture, forensic reconstruction of event, photography, truth-value

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Maia, Filipe R. N. C., Tomas Ekeberg, David van der Spoel et Janos Hajdu. « Hawk : the image reconstruction package for coherent X-ray diffractive imaging ». Journal of Applied Crystallography 43, n^o 6 (1 octobre 2010) : 1535–39. http://dx.doi.org/10.1107/s0021889810036083.

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The past few years have seen a tremendous growth in the field of coherent X-ray diffractive imaging, in large part due to X-ray free-electron lasers which provide a peak brilliance billions of times higher than that of synchrotrons. However, this rapid development in terms of hardware has not been matched on the software side. The release ofHawkis intended to close this gap. To the authors' knowledgeHawkis the first publicly available and fully open source software program for reconstructing images from continuous diffraction patterns. The software handles all steps leading from a raw diffraction pattern to a reconstructed two-dimensional image including geometry determination, background correction, masking and phasing. It also includes preliminary three-dimensional support and support for graphics processing units using the Compute Unified Device Architecture, which speeds up processing by orders of magnitude compared to a single central processing unit.Hawkimplements numerous algorithms and is easily extended. This, in combination with its open-source licence, provides a platform for other groups to test, develop and distribute their own algorithms.Hawkis available under the GNU General Public License from http://xray.bmc.uu.se/hawk.

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Deng, Junjun, Hengyong Yu, Jun Ni, Lihe Wang et Ge Wang. « Parallelism of iterative CT reconstruction based on local reconstruction algorithm ». Journal of Supercomputing 48, n^o 1 (29 mars 2008) : 1–14. http://dx.doi.org/10.1007/s11227-008-0198-9.

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Wang, Jie, Hai-Long Zhang, Na Wang, Xin-Chen Ye, Wan-Qiong Wang, Jia Li, Meng Zhang et Ya-Zhou Zhang. « Simulation analysis of a method to improve data-transmission performance of Nanshan 26m Radio Telescope based on Software-Defined Networks ». Research in Astronomy and Astrophysics 21, n^o 11 (1 décembre 2021) : 279. http://dx.doi.org/10.1088/1674-4527/21/11/279.

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Abstract Data Center of Xinjiang Astronomical Observatory (XAO-DC) commenced operating in 2015, and provides services including archiving, releasing and retrieving precious astronomical data collected by the Nanshan 26m Radio Telescope (NSRT) over the years, and realises the open sharing of astronomical observation data. The observation data from NSRT are transmitted to XAO-DC 100 km away through dedicated fiber for long-term storage. With the continuous increase of data, the static architecture of the current network cannot meet NSRT data-transmission requirements due to limited network bandwidth. To get high-speed data-transmission using the existing static network architecture, a method for reconstruction data-transmission network using Software-Defined Networks (SDN) is proposed. Benefit from the SDNʼs data and control plane separation, and open programmable, combined with the Mininet simulation platform for experiments, the TCP throughput (of single thread) was improved by ∼24.7%, the TCP throughput (of multi threads) was improved by ∼9.8%, ∼40.9%, ∼35.5% and ∼11.7%. Compared with the current network architecture, the Latency was reduced by ∼63.2%.

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XIROUCHAKIS, PAUL C., PEARL Y. WANG et OPHIR FRIEDER. « DATA PARALLEL VISUAL RECONSTRUCTION AND PARTITIONING ALGORITHMS ». Parallel Processing Letters 03, n^o 03 (septembre 1993) : 267–77. http://dx.doi.org/10.1142/s0129626493000319.

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Data parallel visual reconstruction and partitioning algorithms and the associated code are developed for a vector random access machine (V-RAM). Finite element algorithms are constructed for solving the one-dimensional visual reconstruction problem with the input data consisting of a symmetrical top hat loading for the modeling of interacting step discontinuities. The advantage of the V-RAM implementation is the general code applicability to a variety of architectures. A specific implementation is performed on a Distributed Array Processor (DAP) simulator on the VAX 6000–420. Execution times on the DAP simulator are obtained and are found to be in agreement with the algorithmic complexities of the V-RAM code.

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Sun, Yujuan, Zeju Wu, Xiaofeng Zhang et Yongqing Lei. « Three dimensional face reconstruction based on average face model and photometric stereo ». International Journal of Embedded Systems 9, n^o 3 (2017) : 195. http://dx.doi.org/10.1504/ijes.2017.084683.

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Luo, Huizhang, Penglin Dai, Liang Shi, Chun Jason Xue, Qingfeng Zhuge et Edwin H. M. Sha. « Write reconstruction for write throughput improvement on MLC PCM based main memory ». Journal of Systems Architecture 71 (novembre 2016) : 62–72. http://dx.doi.org/10.1016/j.sysarc.2016.05.006.

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Deabes, Wael. « FPGA Implementation of ECT Digital System for Imaging Conductive Materials ». Algorithms 12, n^o 2 (22 janvier 2019) : 28. http://dx.doi.org/10.3390/a12020028.

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This paper presents the hardware implementation of a stand-alone Electrical Capacitance Tomography (ECT) system employing a Field Programmable Gate Array (FPGA). The image reconstruction algorithms of the ECT system demand intensive computation and fast processing of large number of measurements. The inner product of large vectors is the core of the majority of these algorithms. Therefore, a reconfigurable segmented parallel inner product architecture for the parallel matrix multiplication is proposed. In addition, hardware-software codesign targeting FPGA System-On-Chip (SoC) is applied to achieve high performance. The development of the hardware-software codesign is carried out via commercial tools to adjust the software algorithms and parameters of the system. The ECT system is used in this work to monitor the characteristic of the molten metal in the Lost Foam Casting (LFC) process. The hardware system consists of capacitive sensors, wireless nodes and FPGA module. The experimental results reveal high stability and accuracy when building the ECT system based on the FPGA architecture. The proposed system achieves high performance in terms of speed and small design density.

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Berardi, Umberto, Gino Iannace, Amelia Trematerra et Antonella Bevilacqua. « Virtual acoustic reconstruction of the Roman amphitheater of Avella in Italy ». Journal of the Acoustical Society of America 152, n^o 4 (octobre 2022) : A273. http://dx.doi.org/10.1121/10.0016249.

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In ancient Rome, gladiator fights were very popular. The places where these shows took place were called amphitheaters, due to the particular shape of the elliptical building. Amphitheaters were widespread, and in each city, one or more of these buildings was present. This paper describes the virtual reconstruction of the acoustics of the amphitheater Avella, close to Naples, Italy. This amphitheater was discovered a few decades ago and was only partially rebuilt. Today, it is used for musical performances during the summer season mainly. The plan of the building is elliptical, and the dimensions of the arena are 35 m for the minor axis and 65 m for the major axis. Acoustic measurements were performed in the current state with an impulsive sound source and the acoustic parameters were obtained according to the ISO 3382 standard. Subsequently, from the dimensions of the current state and in analogy with the architecture of other amphitheaters existing today, a virtual reconstruction of the original shape was performed. The virtual model was developed with the architectural acoustics software Ramsete in order to obtain the acoustic characteristics of the amphitheater as it was in Roman times. In particular, the spatial distribution of the acoustic characteristics on the steps where the audience was seated is described and discussed.

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Tronchin, Lamberto, Francesca Merli et Marco Dolci. « Acoustic Reconstruction of Eszterháza Opera House Following New Archival Research ». Applied Sciences 10, n^o 24 (9 décembre 2020) : 8817. http://dx.doi.org/10.3390/app10248817.

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The Eszterháza Opera House was a theatre built by the will of the Hungarian Prince Nikolaus Esterházy in the second half of the 18th century that had to compete in greatness and grandeur against Austrian Empire. The composer that inextricably linked his name to this theatre was Haydn that served the prince and composed pieces for him for many years. The Opera House disappeared from the palace complex maps around 1865 and was destroyed permanently during the Second World War. This study aims to reconstruct the original shape and materials of the theatre, thanks to the documents founded by researchers in the library of the Esterházy family at Forchtenstein, the Hungarian National Library, and analyze its acoustic behavior. With the 3D model of the theatre, acoustic simulations were performed using the architectural acoustic software Ramsete to understand its acoustical characteristics and if the architecture of the Eszterháza Opera House could favor the Prince’s listening. The obtained results show that the union between the large volume of the theatre and the reflective materials makes the Opera House a reverberant space. The acoustic parameters are considered acoustically favorable both for the music and for the speech transmission too. Moreover, the results confirm that the geometry and the shape of the Eszterháza Opera House favored the Prince’s view and listening, amplifying onstage voices and focusing the sound into his box.

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OLARIU, STEPHAN, et ZHAOFANG WEN. « A PARALLEL ALGORITHM FOR FOREST RECONSTRUCTION ». Parallel Processing Letters 02, n^o 02n03 (septembre 1992) : 157–60. http://dx.doi.org/10.1142/s0129626492000271.

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The purpose of this short note is to show that the problem of reconstructing a directed forest from a collection of leaf-to-root paths can be done efficiently in parallel by reducing the problem to integer sorting. Specifically, given M the total length of the paths in the collection, and n the number of distinct node labels, our algorithm reconstructs the corresponding forest (if such a forest exists) in O(M/p) time using p ≤ M/n processors or [Formula: see text] time using M/n < p < M processors, and O (M) space on the EREW-PRAM.

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