Gotowe bibliografie tematyczne / Image segmentation

Spis treści

Artykuły w czasopismach
Rozprawy doktorskie
Książki
Części książek
Streszczenia konferencji
Raporty organizacyjne

Gotowa bibliografia na temat „Image segmentation”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 27 lipca 2024

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Zobacz listy aktualnych artykułów, książek, rozpraw, streszczeń i innych źródeł naukowych na temat „Image segmentation”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Artykuły w czasopismach na temat "Image segmentation"

Stevens, Michiel, Afroditi Nanou, Leon W. M. M. Terstappen, Christiane Driemel, Nikolas H. Stoecklein i Frank A. W. Coumans. "StarDist Image Segmentation Improves Circulating Tumor Cell Detection". Cancers 14, nr 12 (13.06.2022): 2916. http://dx.doi.org/10.3390/cancers14122916.

Pełny tekst źródła

Streszczenie:

After a CellSearch-processed circulating tumor cell (CTC) sample is imaged, a segmentation algorithm selects nucleic acid positive (DAPI+), cytokeratin-phycoerythrin expressing (CK-PE+) events for further review by an operator. Failures in this segmentation can result in missed CTCs. The CellSearch segmentation algorithm was not designed to handle samples with high cell density, such as diagnostic leukapheresis (DLA) samples. Here, we evaluate deep-learning-based segmentation method StarDist as an alternative to the CellSearch segmentation. CellSearch image archives from 533 whole blood samples and 601 DLA samples were segmented using CellSearch and StarDist and inspected visually. In 442 blood samples from cancer patients, StarDist segmented 99.95% of CTC segmented by CellSearch, produced good outlines for 98.3% of these CTC, and segmented 10% more CTC than CellSearch. Visual inspection of the segmentations of DLA images showed that StarDist continues to perform well when the cell density is very high, whereas CellSearch failed and generated extremely large segmentations (up to 52% of the sample surface). Moreover, in a detailed examination of seven DLA samples, StarDist segmented 20% more CTC than CellSearch. Segmentation is a critical first step for CTC enumeration in dense samples and StarDist segmentation convincingly outperformed CellSearch segmentation.

Style APA, Harvard, Vancouver, ISO itp.

Rahman, Fathur, Nuzul Hikmah i Misdiyanto Misdiyanto. "Analysis Influence Segmentation Image on Classification Image X-raylungs with Method Convolutional Neural". Journal of Informatics Development 2, nr 1 (30.10.2023): 23–29. http://dx.doi.org/10.30741/jid.v2i1.1159.

Pełny tekst źródła

Streszczenie:

The impact of image segmentation on the classification of lung X-ray images using Convolutional Neural Networks (CNNs) has been scrutinized in this study. The dataset used in this research comprises 150 lung X-ray images, distributed as 78 for training, 30 for validation, and 42 for testing. Initially, image data undergoes preprocessing to enhance image quality, employing adaptive histogram equalization to augment contrast and enhance image details. The evaluation of segmentation's influence is based on a comparison between image classification with and without the segmentation process. Segmentation involves the delineation of lung regions through techniques like thresholding, accompanied by various morphological operations such as hole filling, area opening, and labeling. The image classification process employs a CNN featuring 5 convolution layers, the Adam optimizer, and a training period of 30 epochs. The results of this study indicate that the X-ray image dataset achieved a classification accuracy of 59.52% in network testing without segmentation. In contrast, when segmentation was applied to the X-ray image dataset, the accuracy significantly improved to 73.81%. This underscores the segmentation process's ability to enhance network performance, as it simplifies the classification of segmented image patterns.

Style APA, Harvard, Vancouver, ISO itp.

Wang, Guodong, Jie Xu, Qian Dong i Zhenkuan Pan. "Active Contour Model Coupling with Higher Order Diffusion for Medical Image Segmentation". International Journal of Biomedical Imaging 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/237648.

Pełny tekst źródła

Streszczenie:

Active contour models are very popular in image segmentation. Different features such as mean gray and variance are selected for different purpose. But for image with intensity inhomogeneities, there are no features for segmentation using the active contour model. The images with intensity inhomogeneities often occurred in real world especially in medical images. To deal with the difficulties raised in image segmentation with intensity inhomogeneities, a new active contour model with higher-order diffusion method is proposed. With the addition of gradient and Laplace information, the active contour model can converge to the edge of the image even with the intensity inhomogeneities. Because of the introduction of Laplace information, the difference scheme becomes more difficult. To enhance the efficiency of the segmentation, the fast Split Bregman algorithm is designed for the segmentation implementation. The performance of our method is demonstrated through numerical experiments of some medical image segmentations with intensity inhomogeneities.

Style APA, Harvard, Vancouver, ISO itp.

Liu, Hong, Haijun Wei, Lidui Wei, Jingming Li i Zhiyuan Yang. "The Segmentation of Wear Particles Images UsingJ-Segmentation Algorithm". Advances in Tribology 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/4931502.

Pełny tekst źródła

Streszczenie:

This study aims to use a JSEG algorithm to segment the wear particle’s image. Wear particles provide detailed information about the wear processes taking place between mechanical components. Autosegmentation of their images is key to intelligent classification system. This study examined whether this algorithm can be used in particles’ image segmentation. Different scales have been tested. Compared with traditional thresholding along with edge detector, the JSEG algorithm showed promising result. It offers a relatively higher accuracy and can be used on color image instead of gray image with little computing complexity. A conclusion can be drawn that the JSEG method is suited for imaged wear particle segmentation and can be put into practical use in wear particle’s identification system.

Style APA, Harvard, Vancouver, ISO itp.

Pitkänen, Johanna, Juha Koikkalainen, Tuomas Nieminen, Ivan Marinkovic, Sami Curtze, Gerli Sibolt, Hanna Jokinen i in. "Evaluating severity of white matter lesions from computed tomography images with convolutional neural network". Neuroradiology 62, nr 10 (13.04.2020): 1257–63. http://dx.doi.org/10.1007/s00234-020-02410-2.

Pełny tekst źródła

Streszczenie:

Abstract Purpose Severity of white matter lesion (WML) is typically evaluated on magnetic resonance images (MRI), yet the more accessible, faster, and less expensive method is computed tomography (CT). Our objective was to study whether WML can be automatically segmented from CT images using a convolutional neural network (CNN). The second aim was to compare CT segmentation with MRI segmentation. Methods The brain images from the Helsinki University Hospital clinical image archive were systematically screened to make CT-MRI image pairs. Selection criteria for the study were that both CT and MRI images were acquired within 6 weeks. In total, 147 image pairs were included. We used CNN to segment WML from CT images. Training and testing of CNN for CT was performed using 10-fold cross-validation, and the segmentation results were compared with the corresponding segmentations from MRI. Results A Pearson correlation of 0.94 was obtained between the automatic WML volumes of MRI and CT segmentations. The average Dice similarity index validating the overlap between CT and FLAIR segmentations was 0.68 for the Fazekas 3 group. Conclusion CNN-based segmentation of CT images may provide a means to evaluate the severity of WML and establish a link between CT WML patterns and the current standard MRI-based visual rating scale.

Style APA, Harvard, Vancouver, ISO itp.

Yazdi, Mahsa Badiee, Mohammad Mahdi Khalilzadeh i Mohsen Foroughipour. "MRI SEGMENTATION BY FUZZY CLUSTERING METHOD BASED ON PRIOR KNOWLEDGE". Biomedical Engineering: Applications, Basis and Communications 28, nr 04 (sierpień 2016): 1650025. http://dx.doi.org/10.4015/s1016237216500253.

Pełny tekst źródła

Streszczenie:

Image segmentation is often required as a fundamental stage in medical image processing, particularly during the clinical analysis of magnetic resonance (MR) brain images. Fuzzy c-means (FCM) clustering algorithm is one of the best known and widely used segmentation methods, but this algorithm has some problem for segmenting simulated MRI images to high number of clusters with different noise levels and real images because of spatial complexities. Anatomical segmentation usually requires information derived from the manual segmentations done by experts, prior knowledge can be useful to modify image segmentation methods. In this paper, we propose some methods to modify FCM algorithm using expert manual segmentation as prior knowledge. We developed combination of FCM algorithm and prior knowledge in three ways, in order to improve segmentation of brain MR images with high noise level and spatial complexity. In real images, we had a considerable improvement in similarity index of three classes (white matter, gray matter, CSF) and in simulated images with different noise levels evaluation criteria of white matter and gray matter has improved.

Style APA, Harvard, Vancouver, ISO itp.

Tatyankin, Vitaly M., i Irina S. Dyubko. "Image segmentation". Yugra State University Bulletin 11, nr 2 (15.06.2015): 99–101. http://dx.doi.org/10.17816/byusu201511299-101.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Yao, Hongtai, Xianpei Wang, Le Zhao, Meng Tian, Zini Jian, Li Gong i Bowen Li. "An Object-Based Markov Random Field with Partition-Global Alternately Updated for Semantic Segmentation of High Spatial Resolution Remote Sensing Image". Remote Sensing 14, nr 1 (29.12.2021): 127. http://dx.doi.org/10.3390/rs14010127.

Pełny tekst źródła

Streszczenie:

The Markov random field (MRF) method is widely used in remote sensing image semantic segmentation because of its excellent spatial (relationship description) ability. However, there are some targets that are relatively small and sparsely distributed in the entire image, which makes it easy to misclassify these pixels into different classes. To solve this problem, this paper proposes an object-based Markov random field method with partition-global alternately updated (OMRF-PGAU). First, four partition images are constructed based on the original image, they overlap with each other and can be reconstructed into the original image; the number of categories and region granularity for these partition images are set. Then, the MRF model is built on the partition images and the original image, their segmentations are alternately updated. The update path adopts a circular path, and the correlation assumption is adopted to establish the connection between the label fields of partition images and the original image. Finally, the relationship between each label field is constantly updated, and the final segmentation result is output after the segmentation has converged. Experiments on texture images and different remote sensing image datasets show that the proposed OMRF-PGAU algorithm has a better segmentation performance than other selected state-of-the-art MRF-based methods.

Style APA, Harvard, Vancouver, ISO itp.

Ding, Ruiyao. "Segmentation analysis of UAV images based on Unet deep learning algorithm". Applied and Computational Engineering 54, nr 1 (29.03.2024): 248–53. http://dx.doi.org/10.54254/2755-2721/54/20241644.

Pełny tekst źródła

Streszczenie:

The continuous development of UAV technology provides us with more and higher quality data, in which the application of UAV image segmentation technology can help us better understand and process these data. Traditional image segmentation methods can no longer meet the needs of UAV image segmentation, so researchers have begun to explore the application of deep learning methods in UAV image segmentation.U-Net, as a classical deep learning model, is also widely used in UAV image segmentation.U-Net is characterized by two parts: encoder and decoder, which are used to extract the image features, and decoder is used to map the features back to the original image size. features to map back to the original image size. UAV image segmentation technology can be applied in agriculture, urban planning, environmental monitoring and other fields. In the field of agriculture, UAV image segmentation can help farmers better manage and monitor farmland to improve crop yield and quality. In the field of urban planning, UAV image segmentation can help urban planners better understand the development status of the city and provide a more scientific basis for urban planning. In the field of environmental monitoring, UAV image segmentation can help us better monitor the changes in the natural environment and provide more effective means for environmental protection. By setting the ratio of training set, validation set and test set as 6:2:2 and performing 100 rounds of training, the U-Net model shows good results in UAV image segmentation. The loss of the model gradually stabilizes at 0.2979 and the accuracy gradually converges to 90.34%. The test results show that the prediction results are very close to the true mask, indicating that the U-Net model can segment UAV images well. The application of UAV image segmentation technology can help us better understand and process the data acquired by UAV and provide more information and basis. In the future, with the continuous development of UAV technology, UAV image segmentation technology will also be more widely used. Through the application of UAV image segmentation technology, we will better understand and protect our environment, manage our farmland more efficiently, and plan our cities more scientifically.

Style APA, Harvard, Vancouver, ISO itp.

Cruz-Aceves, I., J. G. Avina-Cervantes, J. M. Lopez-Hernandez, M. G. Garcia-Hernandez, M. Torres-Cisneros, H. J. Estrada-Garcia i A. Hernandez-Aguirre. "Automatic Image Segmentation Using Active Contours with Univariate Marginal Distribution". Mathematical Problems in Engineering 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/419018.

Pełny tekst źródła

Streszczenie:

This paper presents a novel automatic image segmentation method based on the theory of active contour models and estimation of distribution algorithms. The proposed method uses the univariate marginal distribution model to infer statistical dependencies between the control points on different active contours. These contours have been generated through an alignment process of reference shape priors, in order to increase the exploration and exploitation capabilities regarding different interactive segmentation techniques. This proposed method is applied in the segmentation of the hollow core in microscopic images of photonic crystal fibers and it is also used to segment the human heart and ventricular areas from datasets of computed tomography and magnetic resonance images, respectively. Moreover, to evaluate the performance of the medical image segmentations compared to regions outlined by experts, a set of similarity measures has been adopted. The experimental results suggest that the proposed image segmentation method outperforms the traditional active contour model and the interactive Tseng method in terms of segmentation accuracy and stability.

Style APA, Harvard, Vancouver, ISO itp.

Więcej źródeł

Rozprawy doktorskie na temat "Image segmentation"

Zeng, Ziming. "Medical image segmentation on multimodality images". Thesis, Aberystwyth University, 2013. http://hdl.handle.net/2160/17cd13c2-067c-451b-8217-70947f89164e.

Pełny tekst źródła

Streszczenie:

Segmentation is a hot issue in the domain of medical image analysis. It has a wide range of applications on medical research. A great many medical image segmentation algorithms have been proposed, and many good segmentation results were obtained. However, due to the noise, density inhomogenity, partial volume effects, and density overlap between normal and abnormal tissues in medical images, the segmentation accuracy and robustness of some state-of-the-art methods still have room for improvement. This thesis aims to deal with the above segmentation problems and improve the segmentation accuracy. This project investigated medical image segmentation methods across a range of modalities and clinical applications, covering magnetic resonance imaging (MRI) in brain tissue segmentation, MRI based multiple sclerosis (MS) lesions segmentation, histology based cell nuclei segmentation, and positron emission tomography (PET) based tumour detection. For the brain MRI tissue segmentation, a method based on mutual information was developed to estimate the number of brain tissue groups. Then a unsupervised segmentation method was proposed to segment the brain tissues. For the MS lesions segmentation, 2D/3D joint histogram modelling were proposed to model the grey level distribution of MS lesions in multimodality MRI. For the PET segmentation of the head and neck tumours, two hierarchical methods based on improved active contour/surface modelling were proposed to segment the tumours in PET volumes. For the histology based cell nuclei segmentation, a novel unsupervised segmentation based on adaptive active contour modelling driven by morphology initialization was proposed to segment the cell nuclei. Then the segmentation results were further processed for subtypes classification. Among these segmentation approaches, a number of techniques (such as modified bias field fuzzy c-means clustering, multiimage spatially joint histogram representation, and convex optimisation of deformable model, etc.) were developed to deal with the key problems in medical image segmentation. Experiments show that the novel methods in this thesis have great potential for various image segmentation scenarios and can obtain more accurate and robust segmentation results than some state-of-the-art methods.

Style APA, Harvard, Vancouver, ISO itp.

Horne, Caspar. "Unsupervised image segmentation /". Lausanne : EPFL, 1991. http://library.epfl.ch/theses/?nr=905.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Bhalerao, Abhir. "Multiresolution image segmentation". Thesis, University of Warwick, 1991. http://wrap.warwick.ac.uk/60866/.

Pełny tekst źródła

Streszczenie:

Image segmentation is an important area in the general field of image processing and computer vision. It is a fundamental part of the 'low level' aspects of computer vision and has many practical applications such as in medical imaging, industrial automation and satellite imagery. Traditional methods for image segmentation have approached the problem either from localisation in class space using region information, or from localisation in position, using edge or boundary information. More recently, however, attempts have been made to combine both region and boundary information in order to overcome the inherent limitations of using either approach alone. In this thesis, a new approach to image segmentation is presented that integrates region and boundary information within a multiresolution framework. The role of uncertainty is described, which imposes a limit on the simultaneous localisation in both class and position space. It is shown how a multiresolution approach allows the trade-off between position and class resolution and ensures both robustness in noise and efficiency of computation. The segmentation is based on an image model derived from a general class of multiresolution signal models, which incorporates both region and boundary features. A four stage algorithm is described consisting of: generation of a low-pass pyramid, separate region and boundary estimation processes and an integration strategy. Both the region and boundary processes consist of scale-selection, creation of adjacency graphs, and iterative estimation within a general framework of maximum a posteriori (MAP) estimation and decision theory. Parameter estimation is performed in situ, and the decision processes are both flexible and spatially local, thus avoiding assumptions about global homogeneity or size and number of regions which characterise some of the earlier algorithms. A method for robust estimation of edge orientation and position is described which addresses the problem in the form of a multiresolution minimum mean square error (MMSE) estimation. The method effectively uses the spatial consistency of output of small kernel gradient operators from different scales to produce more reliable edge position and orientation and is effective at extracting boundary orientations from data with low signal-to-noise ratios. Segmentation results are presented for a number of synthetic and natural images which show the cooperative method to give accurate segmentations at low signal-to-noise ratios (0 dB) and to be more effective than previous methods at capturing complex region shapes.

Style APA, Harvard, Vancouver, ISO itp.

Craske, Simon. "Natural image segmentation". Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266990.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Draelos, Timothy John 1961. "INTERACTIVE IMAGE SEGMENTATION". Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276392.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Salem, Mohammed Abdel-Megeed Mohammed. "Multiresolution image segmentation". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2008. http://dx.doi.org/10.18452/15846.

Pełny tekst źródła

Streszczenie:

Systeme der Computer Vision spielen in der Automatisierung vieler Prozesse eine wichtige Rolle. Die wichtigste Aufgabe solcher Systeme ist die Automatisierung des visuellen Erkennungsprozesses und die Extraktion der relevanten Information aus Bildern oder Bildsequenzen. Eine wichtige Komponente dieser Systeme ist die Bildsegmentierung, denn sie bestimmt zu einem großen Teil die Qualitaet des Gesamtsystems. Fuer die Segmentierung von Bildern und Bildsequenzen werden neue Algorithmen vorgeschlagen. Das Konzept der Multiresolution wird als eigenstaendig dargestellt, es existiert unabhaengig von der Wavelet-Transformation. Die Wavelet-Transformation wird zur Verarbeitung von Bildern und Bildsequenzen zu einer 2D- bzw. 3D-Wavelet- Transformation erweitert. Fuer die Segmentierung von Bildern wird der Algorithmus Resolution Mosaic Expectation Maximization (RM-EM) vorgeschlagen. Das Ergebnis der Vorverarbeitung sind unterschiedlich aufgeloesten Teilbilder, das Aufloesungsmosaik. Durch dieses Mosaik lassen sich raeumliche Korrelationen zwischen den Pixeln ausnutzen. Die Verwendung unterschiedlicher Aufloesungen beschleunigt die Verarbeitung und verbessert die Ergebnisse. Fuer die Extraktion von bewegten Objekten aus Bildsequenzen werden neue Algorithmen vorgeschlagen, die auf der 3D-Wavelet-Transformation und auf der Analyse mit 3D-Wavelet-Packets beruhen. Die neuen Algorithmen haben den Vorteil, dass sie sowohl die raeumlichen als auch die zeitlichen Bewegungsinformationen beruecksichtigen. Wegen der geringen Berechnungskomplexitaet der Wavelet-Transformation ist fuer den ersten Segmentierungsschritt Hardware auf der Basis von FPGA entworfen worden. Aktuelle Anwendungen werden genutzt, um die Algorithmen zu evaluieren: die Segmentierung von Magnetresonanzbildern des menschlichen Gehirns und die Detektion von bewegten Objekten in Bildsequenzen von Verkehrsszenen. Die neuen Algorithmen sind robust und fuehren zu besseren Segmentierungsergebnissen.
More and more computer vision systems take part in the automation of various applications. The main task of such systems is to automate the process of visual recognition and to extract relevant information from the images or image sequences acquired or produced by such applications. One essential and critical component in almost every computer vision system is image segmentation. The quality of the segmentation determines to a great extent the quality of the final results of the vision system. New algorithms for image and video segmentation based on the multiresolution analysis and the wavelet transform are proposed. The concept of multiresolution is explained as existing independently of the wavelet transform. The wavelet transform is extended to two and three dimensions to allow image and video processing. For still image segmentation the Resolution Mosaic Expectation Maximization (RM-EM) algorithm is proposed. The resolution mosaic enables the algorithm to employ the spatial correlation between the pixels. The level of the local resolution depends on the information content of the individual parts of the image. The use of various resolutions speeds up the processing and improves the results. New algorithms based on the 3D wavelet transform and the 3D wavelet packet analysis are proposed for extracting moving objects from image sequences. The new algorithms have the advantage of considering the relevant spatial as well as temporal information of the movement. Because of the low computational complexity of the wavelet transform an FPGA hardware for the primary segmentation step was designed. Actual applications are used to investigate and evaluate all algorithms: the segmentation of magnetic resonance images of the human brain and the detection of moving objects in image sequences of traffic scenes. The new algorithms show robustness against noise and changing ambient conditions and gave better segmentation results.

Style APA, Harvard, Vancouver, ISO itp.

Hillman, Peter. "Segmentation of motion picture images and image sequences". Thesis, University of Edinburgh, 2002. http://hdl.handle.net/1842/15026.

Pełny tekst źródła

Streszczenie:

For Motion Picture Special Effects, it is often necessary to take a source image of an actor, segment the actor from the unwanted background, and then composite over a new background. The resultant image appears as if the actor was filmed in front of the new background. The standard approach requires the unwanted background to be a blue or green screen. While this technique is capable of handling areas where the foreground (the actor) blends into the background, the physical requirements present many practical problems. This thesis investigates the possibility of segmenting images where the unwanted background is more varied. Standard segmentation techniques tend not to be effective, since motion picture images have extremely high resolution and high accuracy is required to make the result appear convincing. A set of novel algorithms which require minimal human interaction to initialise the processing is presented. These algorithms classify each pixel by comparing its colour to that of known background and foreground areas. They are shown to be effective where there is a sufficient distinction between the colours of the foreground and background. A technique for assessing the quality of an image segmentation in order to compare these algorithms to alternative solutions is presented. Results are included which suggest that in most cases the novel algorithms have the best performance, and that they produce results more quickly than the alternative approaches. Techniques for segmentation of moving images sequences are then presented. Results are included which show that only a few frames of the sequence need to be initialised by hand, as it is often possible to generate automatically the input required to initialise processing for the remaining frames. A novel algorithm which can produce acceptable results on image sequences where more conventional approaches fail or are too slow to be of use is presented.

Style APA, Harvard, Vancouver, ISO itp.

Chowdhury, Md Mahbubul Islam. "Image segmentation for coding". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0017/MQ55494.pdf.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Wang, Jingdong. "Graph based image segmentation /". View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?CSED%202007%20WANG.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Linnett, L. M. "Multi-texture image segmentation". Thesis, Heriot-Watt University, 1991. http://hdl.handle.net/10399/856.

Pełny tekst źródła

Streszczenie:

Visual perception of images is closely related to the recognition of the different texture areas within an image. Identifying the boundaries of these regions is an important step in image analysis and image understanding. This thesis presents supervised and unsupervised methods which allow an efficient segmentation of the texture regions within multi-texture images. The features used by the methods are based on a measure of the fractal dimension of surfaces in several directions, which allows the transformation of the image into a set of feature images, however no direct measurement of the fractal dimension is made. Using this set of features, supervised and unsupervised, statistical processing schemes are presented which produce low classification error rates. Natural texture images are examined with particular application to the analysis of sonar images of the seabed. A number of processes based on fractal models for texture synthesis are also presented. These are used to produce realistic images of natural textures, again with particular reference to sonar images of the seabed, and which show the importance of phase and directionality in our perception of texture. A further extension is shown to give possible uses for image coding and object identification.

Style APA, Harvard, Vancouver, ISO itp.

Więcej źródeł

Książki na temat "Image segmentation"

El-Baz, Ayman, Xiaoyi Jiang i Suri Jasjit, red. Biomedical Image Segmentation. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.4324/9781315372273.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Bhalerao, Abhir H. Multiresolution image segmentation. [s.l.]: typescript, 1991.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Hati, Avik, Rajbabu Velmurugan, Sayan Banerjee i Subhasis Chaudhuri. Image Co-segmentation. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8570-6.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Roland, Wilson. Image segmentation and uncertainty. Letchworth, Herts., England: Research Studies Press, 1988.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Acton, Scott T., i Nilanjan Ray. Biomedical Image Analysis: Segmentation. Cham: Springer International Publishing, 2009. http://dx.doi.org/10.1007/978-3-031-02245-6.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Siddiqui, Fasahat Ullah, i Abid Yahya. Clustering Techniques for Image Segmentation. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-81230-0.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Morel, Jean Michel, i Sergio Solimini. Variational Methods in Image Segmentation. Boston, MA: Birkhäuser Boston, 1995. http://dx.doi.org/10.1007/978-1-4684-0567-5.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Köster, Klaus. Robust clustering and image segmentation. Birmingham: University of Birmingham, 1999.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Martin, Ian John. Multi-spectral image segmentation and compression. [s.l.]: typescript, 1999.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Bhanu, Bir, i Sungkee Lee. Genetic Learning for Adaptive Image Segmentation. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2774-9.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Więcej źródeł

Części książek na temat "Image segmentation"

Jähne, Bernd. "Segmentation". W Digital Image Processing, 193–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-11565-7_10.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Sundararajan, D. "Segmentation". W Digital Image Processing, 281–308. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-6113-4_10.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Jähne, Bernd. "Segmentation". W Digital Image Processing, 193–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-21817-4_10.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Bräunl, Thomas, Stefan Feyrer, Wolfgang Rapf i Michael Reinhardt. "Segmentation". W Parallel Image Processing, 59–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04327-1_7.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Soille, Pierre. "Segmentation". W Morphological Image Analysis, 229–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-03939-7_9.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Jähne, Bernd. "Segmentation". W Digital Image Processing, 427–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04781-1_16.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Soille, Pierre. "Segmentation". W Morphological Image Analysis, 267–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-05088-0_9.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Awcock, G. J., i R. Thomas. "Segmentation". W Applied Image Processing, 126–47. London: Macmillan Education UK, 1995. http://dx.doi.org/10.1007/978-1-349-13049-8_5.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Jähne, Bernd. "Segmentation". W Digital Image Processing, 193–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-662-03174-2_10.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Adamo, Jean-Marc. "Image Segmentation". W Multi-Threaded Object-Oriented MPI-Based Message Passing Interface, 151–73. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5761-6_10.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Streszczenia konferencji na temat "Image segmentation"

Costa, Gustavo Martins L. da, Anna P. C. Rodrigues, Gabriel Barbosa da Fonseca, Zenilton K. G. do Patrocínio Jr, Giovanna Ribeiro Souto i Silvio Jamil F. Guimarães. "Single-Shot Object Detection and Supervised Image Segmentation for Analysing Cell Images Obtained by Immunohistochemistry". W Anais Estendidos da Conference on Graphics, Patterns and Images. Sociedade Brasileira de Computação - SBC, 2023. http://dx.doi.org/10.5753/sibgrapi.est.2023.27463.

Pełny tekst źródła

Streszczenie:

Analyzing cell images and identifying them correctly is a fundamental task in the immunohistochemical exam. In this paper we propose a novel method to segment FoxP3+ Regulatory T cells (Treg) images automatically, in order to assist healthcare professionals in the task of identifying and counting potentially cancerous cells. The proposed method relies on combining an object detection network, which is tailor-made for microscopy images, with a marker-based image segmentation method to produce the final segmentation, while requiring only a 50x50 training patch to do so. Our pipeline consists on predicting the location of the cells, applying morphological operations on the prediction weights to transform them into markers, and finally using the segmentation method iDISF to generate high quality segmentations. We also propose a new FoxP3+ Treg cells dataset containing 10 high resolution images, with a qualitative and quantitative analysis of our segmentation methods for this dataset.

Style APA, Harvard, Vancouver, ISO itp.

Li, Shaohua, Xiuchao Sui, Xiangde Luo, Xinxing Xu, Yong Liu i Rick Goh. "Medical Image Segmentation using Squeeze-and-Expansion Transformers". W Thirtieth International Joint Conference on Artificial Intelligence {IJCAI-21}. California: International Joint Conferences on Artificial Intelligence Organization, 2021. http://dx.doi.org/10.24963/ijcai.2021/112.

Pełny tekst źródła

Streszczenie:

Medical image segmentation is important for computer-aided diagnosis. Good segmentation demands the model to see the big picture and fine details simultaneously, i.e., to learn image features that incorporate large context while keep high spatial resolutions. To approach this goal, the most widely used methods -- U-Net and variants, extract and fuse multi-scale features. However, the fused features still have small "effective receptive fields" with a focus on local image cues, limiting their performance. In this work, we propose Segtran, an alternative segmentation framework based on transformers, which have unlimited "effective receptive fields" even at high feature resolutions. The core of Segtran is a novel Squeeze-and-Expansion transformer: a squeezed attention block regularizes the self attention of transformers, and an expansion block learns diversified representations. Additionally, we propose a new positional encoding scheme for transformers, imposing a continuity inductive bias for images. Experiments were performed on 2D and 3D medical image segmentation tasks: optic disc/cup segmentation in fundus images (REFUGE'20 challenge), polyp segmentation in colonoscopy images, and brain tumor segmentation in MRI scans (BraTS'19 challenge). Compared with representative existing methods, Segtran consistently achieved the highest segmentation accuracy, and exhibited good cross-domain generalization capabilities.

Style APA, Harvard, Vancouver, ISO itp.

Mansilla, Lucy, i Paulo Miranda. "Image Segmentation by Image Foresting Transform with Boundary Polarity and Shape Constraints". W XXVIII Concurso de Teses e Dissertações da SBC. Sociedade Brasileira de Computação - SBC, 2020. http://dx.doi.org/10.5753/ctd.2015.10003.

Pełny tekst źródła

Streszczenie:

Image segmentation, such as to extract an object from a background, is very useful for medical and biological image analysis. In this work, we propose new segmentation methods for interactive segmentation of multidimensional images, based on the Image Foresting Transform (IFT), by exploiting for the first time non-smooth connectivity functions (NSCF) with a strong theoretical background. The new algorithms provide global optimum solutions according to an energy function of graph cut, subject to high-level boundary constraints (polarity and shape). Our experimental results indicate substantial improvements in accuracy in relation to other state-of-the-art methods, using medical images by allowing the customization of the segmentation to a given target object.

Style APA, Harvard, Vancouver, ISO itp.

Paulose, Suja, i D. Veera Vanitha. "Image Segmentation using Optimization Algorithm: A Survey". W 2nd International Conference on Modern Trends in Engineering Technology and Management. AIJR Publisher, 2023. http://dx.doi.org/10.21467/proceedings.160.41.

Pełny tekst źródła

Streszczenie:

Image segmentation has proven to be an important step in the processing of images, computer vision algorithms, etc. It splits an image into different regions. This survey reviews major contributions in the healthcare l field using deep learning, including the common problems published over the last few years, and also explains the basics of deep learning concepts applicable to medical image segmentation. To solve current problems and improve the development of medical image segmentation problems, the Efficient Net Atrous convolutional encoder & and decoder can be used for segmentation in future research. Efficient Nets have much better accuracy & and efficiency than conv-Nets. The advantage of Efficient-Net is that it can balance the model's depth, width, and image resolution through composite coefficients.

Style APA, Harvard, Vancouver, ISO itp.

Taouli, Sidi Ahmed. "Research on the Image Segmentation by Watershed Transforms". W 3rd International Conference on Machine Learning Techniques and Data Science (MLDS 2022). Academy and Industry Research Collaboration Center (AIRCC), 2022. http://dx.doi.org/10.5121/csit.2022.122108.

Pełny tekst źródła

Streszczenie:

Segmentation is a very important step in medical image processing. The mathematical morphology is very suitable for the pretreatment and segmentation of medical images, which present rich information content. In this work we presented a segmentation paradigm by Watershed preceded by a filtering to eliminate insignificant minima, a marking to remove unmarked minima, and finally we implemented a hierarchical segmentation using the mosaic image of the original image. In principle, watershed segmentation depends on ridges to perform a proper segmentation, a property that is often fulfilled in contour detection where the boundaries of the objects are expressed as ridges. Watershed is normally implemented by region growing, based on a set of markers to avoid over segmentation. The diversity of segmentation offers us several ways to segment the image, always we must look for the right method to get good results.

Style APA, Harvard, Vancouver, ISO itp.

Dias, Jeferson de Souza, i José Hiroki Saito. "Coffee plant image segmentation and disease detection using JSEG algorithm". W Workshop de Visão Computacional. Sociedade Brasileira de Computação - SBC, 2021. http://dx.doi.org/10.5753/wvc.2021.18887.

Pełny tekst źródła

Streszczenie:

Brazil is the largest coffee producer in the world, and then there are many challenges to maintain the high quality and purity of the beans. Thus, it is important to study coffee plants, and help agronomists to detect diseases, such as rust, with resources of computer science. In this work, it is described experiments using image segmentation algorithm JSEG, which is capable to segment images in multi-scale. Using a coffee tree image database RoCoLe (Robusta Coffee Leaf Images), the JSEG algorithm is used to segment these images in four scales. It is selected typical segments in each scale and they are grouped using similarity of normalized color histograms. In this way the several scales segmentations are compared. It is concluded that the segments in scales 1 and 2, in which the colors are more homogeneous then in scales 3 and 4, are adequate to use as training samples for the detection of rust diseases.

Style APA, Harvard, Vancouver, ISO itp.

Adão, Milena Menezes, Silvio Jamil F. Guimarães i Zenilton K. G. Patrocı́nio Jr. "Evaluation of machine learning applied to the realignment of hierarchies for image segmentation". W XXXII Conference on Graphics, Patterns and Images. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/sibgrapi.est.2019.8311.

Pełny tekst źródła

Streszczenie:

A hierarchical image segmentation is a set of image segmentations at different detail levels. However, objects can be located at different scales due to their size differences or to their distinct distances from the camera. In literature, many works have been developed to improve hierarchical image segmentation results. One possible solution is to realign the hierarchy such that every region containing an object (or its parts) is at the same level. In this work, we have explored the use of random forest and artificial neural network as regressors models to predict score values for regions belonging to a hierarchy of partitions, which are used to realign it. We have also proposed a new score calculation witch considering all user-defined segmentations that exist in the ground-truth. Experimental results are presented for two different hierarchical segmentation methods. Moreover, an analysis of the adoption of different combination of mid-level features to describe regions and different architectures from random forest and artificial neural network to train regressors models. Experimental results have point out that the use of new proposed score was able to improve final segmentation results.

Style APA, Harvard, Vancouver, ISO itp.

Marquez, Alejandra, i Alex Cuadros. "3D Medical Image Segmentation based on 3D Convolutional Neural Networks". W LatinX in AI at Neural Information Processing Systems Conference 2018. Journal of LatinX in AI Research, 2018. http://dx.doi.org/10.52591/lxai201812031.

Pełny tekst źródła

Streszczenie:

A neural network is a mathematical model that is able to perform a task automatically or semi-automatically after learning the human knowledge that we provided. Moreover, a Convolutional Neural Network (CNN) is a type of sophisticated neural network that has shown to efficiently learn tasks related to the area of image analysis (among other areas). One example of these tasks is image segmentation, which aims to find regions or separable objects within an image. A more specific type of segmentation called semantic segmentation, makes sure that each region has a semantic meaning by giving it a label or class. Since neural networks can automate the task of semantic segmentation of images, they have been very useful for the medical area, applying them to the segmentation of organs or abnormalities (tumors). Therefore, this thesis project seeks to address the task of semantic segmentation of volumetric medical images obtained by Magnetic Resonance Imaging (MRI). Volumetric images are composed of a set of 2D images that altogether represent a volume. We will use a pre-existing Three-dimensional Convolutional Neural Network (3D CNN) architecture, for the binary semantic segmentation of organs in volumetric images. We will talk about the data preprocessing process, as well as specific aspects of the 3D CNN architecture. Finally, we propose a variation in the formulation of the loss function used for training the 3D CNN, also called objective function, for the improvement of pixel-wise segmentation results. We will present the comparisons in performance we made between the proposed loss function and other pre-existing loss functions using two medical image segmentation datasets.

Style APA, Harvard, Vancouver, ISO itp.

Virbukaite, Sandra, i Jolita Bernataviciene. "Image Resizing Impact on Optic Disc and Optic Cup Segmentation". W WSCG'2022 - 30. International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision'2022. Západočeská univerzita, 2022. http://dx.doi.org/10.24132/csrn.3201.39.

Pełny tekst źródła

Streszczenie:

Optic disc (OD) and Optic Cup (OC) segmentation play an important role in the automatic assessment of eye health where the Convolutional Neural Networks (CNNs) have been extensively employed. The application of CNNs requires identical image size to work properly but the eye fundus images vary due to different datasets. In this paper we evaluate eye fundus image resizing level impact on OD and OC segmentation. For this evaluation we apply the most popular medical images segmentation autoencoder named U-Net. The experiments demonstrate that OD and OC segmentation results are improved averagely by 5.5 percent resizing images to size of 512x512 than 128x128.

Style APA, Harvard, Vancouver, ISO itp.

Hage, Ilige S., i Ramsey F. Hamade. "Segregation of Cortical Bone’s Haversian Systems via Automated Image Segmentation". W ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51872.

Pełny tekst źródła

Streszczenie:

The lamellar or Haversian system is comprised mainly of fundamental units “osteons”. Haversian canals run through the center of the osteons where one or more blood vessels are located. The bone matrix is comprised of concentric lamellae surrounding Haversian canals. Those lamellae are punctuated by holes called lacunae, which are connected to each other through the canaliculi supplying nutrients. Haversian canals, lacunae and canaliculi of the Haversian system constitute the main porosities in cortical bone, thus it is advantageous to segregate those systems in segmented images that will help medical image analysis in accounting for porosities. To the authors’ best knowledge, no work has been published on segregating Haversian systems with its 3 predominant components (Haversian canals, lacunae, and canaliculi) via automated image segmentation of optical microscope images. This paper aims to detect individual osteonal Haversian system via optical microscope image segmentation. Automation is assured via artificial intelligence; specifically neural networks are used to procure an automated image segmentation methodology. Biopsies are taken from cortical bone cut at mid-diaphysis femur from bovine cows (which age is about 2 year-old). Specimens followed a pathological procedure (fixation, decalcification, and staining using H&E staining treatment) in order to get slides ready for optical imaging. Optical images at 20X magnification are captured using SC30 digital microscope camera of BX-41M LED optical Olympus microscope. In order to get the targeted segmented images, utilized was an image segmentation methodology developed previously by the authors. This methodology named “PCNN-PSO-AT” combines pulse coupled neural networks to particle swarm optimization and adaptive thresholding, yielding segmented images quality. Segmentation is occurred based on a geometrical attribute namely orientation used as the fitness function for the PSO. The fitness function is built in such way to maximize the identified number of features (which are the 3 components of the osteonal system) having same orientation. The segmentation methodology is applied on several test images. Results were compared to manually segmented images using suitable quality metrics widely used for image segmentation evaluation namely precision rate, sensitivity, specificity, accuracy and dice. The main goal of segmentation algorithms is to capture as accurate as possible structures of interest, herein Haversian (osteonal) system. High quality segmented images obtained as well as high values of quality metrics (approaching unity) prove the robustness of the segmentation methodology in reaching high fidelity segments of the Haversian system.

Style APA, Harvard, Vancouver, ISO itp.

Raporty organizacyjne na temat "Image segmentation"

Kim, A., I. Pollak, H. Krim i A. S. Willsky. Scale-Based Robust Image Segmentation. Fort Belvoir, VA: Defense Technical Information Center, marzec 1997. http://dx.doi.org/10.21236/ada457838.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Franaszek, Marek. Gauging Difficulty of Image Segmentation. Gaithersburg, MD: National Institute of Standards and Technology, 2022. http://dx.doi.org/10.6028/nist.tn.2207.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Sharma, Karan. The Link Between Image Segmentation and Image Recognition. Portland State University Library, styczeń 2000. http://dx.doi.org/10.15760/etd.199.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Ekeland, I., P. L. Lions, Y. Meyer i J. M. Morel. Vibrations, Viscosity, Wavelets and Image Segmentation. Fort Belvoir, VA: Defense Technical Information Center, styczeń 1990. http://dx.doi.org/10.21236/ada225750.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Franaszek, Marek. Gauging the difficulty of image segmentation. Gaithersburg, MD: National Institute of Standards and Technology, 2022. http://dx.doi.org/10.6028/nist.tn.2207-upd1.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Shaw, K. B., i M. C. Lohrenz. A Survey of Digital Image Segmentation Algorithms. Fort Belvoir, VA: Defense Technical Information Center, styczeń 1995. http://dx.doi.org/10.21236/ada499374.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Ghosh, Payel. Medical Image Segmentation Using a Genetic Algorithm. Portland State University Library, styczeń 2000. http://dx.doi.org/10.15760/etd.25.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Wanna, Selma. Uncertainty Quantification for the Image Segmentation Task. Office of Scientific and Technical Information (OSTI), listopad 2022. http://dx.doi.org/10.2172/1900437.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Xu, Y., i E. C. Uberbacher. 2-D image segmentation using minimum spanning trees. Office of Scientific and Technical Information (OSTI), wrzesień 1995. http://dx.doi.org/10.2172/113991.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Wu, Jin Chu, Michael Halter, Raghu N. Kacker, John T. Elliot i Anne L. Plant. Measurement uncertainty in cell image segmentation data analysis. National Institute of Standards and Technology, sierpień 2013. http://dx.doi.org/10.6028/nist.ir.7954.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!