Dissertations / Theses on the topic 'Coding framework'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 38 dissertations / theses for your research on the topic 'Coding framework.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
He, Shan. "A joint coding and embedding framework for multimedia fingerprinting." College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/7347.
Full textThesis research directed by: Electrical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Pliushch, Iuliia [Verfasser]. "Self-deception within the predictive coding framework / Iuliia Pliushch." Mainz : Universitätsbibliothek Mainz, 2017. http://d-nb.info/1130424901/34.
Full textAl-Najdawi, Ashraf. "A multi-objective performance optimisation framework for video coding." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6446.
Full textYellapragada, Deepthi V. L. "A SNOMED annotator for UIMA framework." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5402.
Full textTitle from document title page. Document formatted into pages; contains v, 47 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 47).
Herath, H. M. A. C. "Statistical databases within a relational framework." Thesis, Keele University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386218.
Full textChung, Wilson C. "Adaptive subband video coding in a rate-distortion-constrained framework." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/15459.
Full textCai, Xiaodong. "Object-based video : integrated segmentation framework and coding quality control." Thesis, University of Sussex, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.444364.
Full textHarrison, Timothy David. "A connectionist framework for continuous speech recognition." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253820.
Full textKim, Changick. "A framework for object-based video analysis /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/5823.
Full textMei, Liming, and james mei@ieee org. "A DWT Based Perceptual Video Coding Framework - Concepts, Issues and Techniques." RMIT University. Electrical and Computer Engineering, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20090506.103244.
Full textSprljan, Nikola. "A flexible scalable video coding framework with adaptive spatio-temporal decompositions." Thesis, Queen Mary, University of London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434834.
Full textKrishnan, Venkatesh. "A framework for low bit-rate speech coding in noisy environment." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-04042005-182043/unrestricted/krishnan%5Fvenkatesh%5F200505%5Fphd.pdf.
Full textAnderson, David, Committee Chair ; Barnwell-III, Thomas, Committee Member ; Clements, Mark, Committee Member ; Truong, Kwan, Committee Member ; Basu, Saugata, Committee Member. Vita. Includes bibliographical references.
Wong, Georges. "Improved speech hidden Markov modelling via an expectation-maximization framework." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259544.
Full textLi, Wei. "Reinforcement Learning in Keepaway Framework for RoboCup Simulation League." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-13412.
Full textStrand, Mattias. "A Software Framework for Facial Modelling and Tracking." Thesis, Linköping University, Department of Electrical Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-54563.
Full textThe WinCandide application, a platform for face tracking and model based coding, had become out of date and needed to be upgraded. This report is based on the work of investigating possible open source GUIs and computer vision tool kits that could replace the old ones that are unsupported. Multi platform GUIs are of special interest.
Battistini, Ylenia. "Studio e Sviluppo Prototipale di un Framework su Piattaforma Snap! per attività di Apprendimento e Coding in Scuole Primarie e Secondarie." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19065/.
Full textMazo, Lucille. "University Educators' Instructional Choices and Their Learning Styles Within a Lesson Framework." ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/3499.
Full textLucero, Aldo. "Compressing scientific data with control and minimization of the L-infinity metric under the JPEG 2000 framework." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2007. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Full textKimbung, Stanley Mbandi. "A computational framework for transcriptome assembly and annotation in non-model organisms: the case of venturia inaequalis." Thesis, University of the Western Cape, 2014. http://hdl.handle.net/11394/4022.
Full textIn this dissertation three computational approaches are presented that enable optimization of reference-free transcriptome reconstruction. The first addresses the selection of bona fide reconstructed transcribed fragments (transfrags) from de novo transcriptome assemblies and annotation with a multiple domain co-occurrence framework. We showed that selected transfrags are functionally relevant and represented over 94% of the information derived from annotation by transference. The second approach relates to quality score based RNA-seq sub-sampling and the description of a novel sequence similarity-derived metric for quality assessment of de novo transcriptome assemblies. A detail systematic analysis of the side effects induced by quality score based trimming and or filtering on artefact removal and transcriptome quality is describe. Aggressive trimming produced incomplete reconstructed and missing transfrags. This approach was applied in generating an optimal transcriptome assembly for a South African isolate of V. inaequalis. The third approach deals with the computational partitioning of transfrags assembled from RNA-Seq of mixed host and pathogen reads. We used this strategy to correct a publicly available transcriptome assembly for V. inaequalis (Indian isolate). We binned 50% of the latter to Apple transfrags and identified putative immunity transcript models. Comparative transcriptomic analysis between fungi transfrags from the Indian and South African isolates reveal effectors or transcripts that may be expressed in planta upon morphogenic differentiation. These studies have successfully identified V. inaequalis specific transfrags that can facilitate gene discovery. The unique access to an in-house draft genome assembly allowed us to provide preliminary description of genes that are implicated in pathogenesis. Gene prediction with bona fide transfrags produced 11,692 protein-coding genes. We identified two hydrophobin-like genes and six accessory genes of the melanin biosynthetic pathway that are implicated in the invasive action of the appressorium. The cazyome reveals an impressive repertoire of carbohydrate degrading enzymes and carbohydrate-binding modules amongst which are six polysaccharide lyases, and the largest number of carbohydrate esterases (twenty-eight) known in any fungus sequenced to date
Hautala, I. (Ilkka). "From dataflow models to energy efficient application specific processors." Doctoral thesis, Oulun yliopisto, 2019. http://urn.fi/urn:isbn:9789526223681.
Full textTiivistelmä Langattomien verkkojen kehittyminen on luonut edellytykset useille uusille sovelluksille. Muiden muassa sosiaalisen media, suoratoistopalvelut, virtuaalitodellisuus ja esineiden internet asettavat kannettaville ja puettaville laitteille moninaisia toimintoihin, suorituskykyyn, energiankulutukseen ja fyysiseen muotoon liittyviä vaatimuksia. Yksi isoimmista haasteista on sulautettujen laitteiden energiankulutus. Laitteiden energiatehokkuutta on pyritty parantamaan rinnakkaislaskentaa ja räätälöityjä laskentaresursseja hyödyntämällä. Tämä puolestaan on vaikeuttanut niin laite- kuin sovelluskehitystä, koska laajassa käytössä olevat kehitystyökalut perustuvat matalan tason abstraktioihin ja hyödyntävät alun perin yksi ydinprosessoreille suunniteltuja ohjelmointikieliä. Korkean tason ja automatisoitujen kehitysmenetelmien käyttöönottoa on hidastanut aikaansaatujen järjestelmien puutteellinen suorituskyky ja laiteresurssien tehoton hyödyntäminen. Väitöskirja esittelee datavuopohjaiseen suunnitteluun perustuvan työkaluketjun, joka on tarkoitettu energiatehokkaiden signaalikäsittelyjärjestelmien toteuttamiseen. Työssä esiteltävä suunnitteluvuo pohjautuu laitteistoratkaisuissa räätälöitävään ja ohjelmoitavaan siirtoliipaistavaan prosessoritemplaattiin. Ehdotettu suunnitteluvuo mahdollistaa useiden heterogeenisten prosessoriytimien ja niiden välisten kytkentöjen räätälöimisen sovelluksien tarpeiden vaatimalla tavalla. Suunnitteluvuossa ohjelmistot kuvataan korkean tason datavuomallien avulla. Tämä mahdollistaa erityisesti rinnakkaista laskentaa sisältävän ohjelmiston automaattisen sovittamisen erilaisiin moniprosessorijärjestelmiin ja nopeuttaa erilaisten järjestelmätason ratkaisujen kartoittamista. Suunnitteluvuon käyttökelpoisuus osoitetaan käyttäen esimerkkinä kolmea eri signaalinkäsittelysovellusta. Tulokset osoittavat, että suunnittelumenetelmien abstraktiotasoa on mahdollista nostaa ilman merkittävää suorituskyvyn heikkenemistä. Väitöskirjan keskeinen sovellusalue on videonkoodaus. Työ esittelee videonkoodaukseen suunniteltuja energiatehokkaita ja uudelleenohjelmoitavia prosessoriytimiä. Ratkaisut perustuvat usean prosessoriytimen käyttämiseen hyödyntäen erityisesti videonkäsittelyalgoritmeille ominaista liukuhihnarinnakkaisuutta. Prosessorien virrankulutus, suorituskyky ja pinta-ala on analysoitu käyttämällä simulointimalleja, jotka huomioivat logiikkasolujen sijoittelun ja johdotuksen. Ehdotetut sovelluskohtaiset prosessoriratkaisut tarjoavat uuden energiatehokkaan kompromissiratkaisun tavanomaisten ohjelmoitavien prosessoreiden ja kiinteästi johdotettujen video-kiihdyttimien välille
Ali, Khan Syed Irteza. "Classification using residual vector quantization." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50300.
Full textLi, Yihui. "Do All Asian Americans Feel Alike? Exploring Asian American College Students' Sense of Belonging on Campuses." Bowling Green State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1542046823067658.
Full textSandberg, Emil. "Creative Coding on the Web in p5.js : A Library Where JavaScript Meets Processing." Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-17941.
Full text"A unified framework for linear network coding." 2008. http://library.cuhk.edu.hk/record=b5893688.
Full textThesis (M.Phil.)--Chinese University of Hong Kong, 2008.
Includes bibliographical references (p. 35-36).
Abstracts in English and Chinese.
Abstract --- p.i
Acknowledgement --- p.iii
Chapter 1 --- Introduction --- p.1
Chapter 1.1 --- Previous Work --- p.1
Chapter 1.2 --- Motivation --- p.2
Chapter 1.3 --- Contributions --- p.2
Chapter 1.4 --- Thesis Organization --- p.3
Chapter 2 --- Linear Network Coding Basics --- p.5
Chapter 2.1 --- Formulation and Example --- p.5
Chapter 2.2 --- Some Notations --- p.9
Chapter 3 --- A Unified Framework --- p.13
Chapter 3.1 --- Generic Network Codes Revisited --- p.13
Chapter 3.2 --- A Unified Framework --- p.24
Chapter 3.3 --- Simplified Proofs --- p.29
Chapter 4 --- Conclusion --- p.33
Bibliography --- p.35
蕭哲民. "SoC architecture for MPEG Reconfigurable Video Coding Framework." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/31948018021751248763.
Full text國立交通大學
資訊科學與工程研究所
95
Due to the variety of popular video coding standards, many efforts have been put into the design of a single video decoder chip that supports multiple formats. In 2004, ISO/IEC MPEG started a new work item to facilitate multi-format video codec design and to enable more flexible usage of coding tools. The work item has turned into the MPEG Reconfigurable Video Coding (RVC) framework. The key concept of the RVC framework is to allow flexible reconfiguration of coding tools to create different codec solutions on-the-fly. In this thesis, flexible SoC architecture is proposed to support the RVC framework. Some analysis has been conducted to show the extra costs required for this platform compared to hard-wired codec architecture. In conclusion, the RVC framework can be mapped to an SoC platform to provide flexibility and scalability for dynamic application environment with reasonable cost in hardware design.
HUANG, Long-wang, and 黃龍旺. "A Constant Quality Coding Framework for H.264/AVC." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/06896136144104909169.
Full text國立中央大學
資訊工程研究所
100
Quality control is important in video coding, which tries to dynamically adjust the encoder parameters for achieving the target distortion. In this thesis, we propose a quality control framework for the constant quality coding in H.264/AVC. The proposed scheme can assign a suitable Quantization Parameter (QP) to each frame based on the scene complexity. In intra-coded frames, we evaluate the scene complexity based on the quality measurements of the resized and singular value decomposition processed frames. With the proposed model, we can adjust the QP to achieve the target distortion. Our propose framework can use different quality measurements such as Peak Signal to Noise Ratio and Structural Similarity. For inter-coded frames, we employ the additional temporal information by the simple motion estimation to improve the prediction accuracy. We also propose a dynamic encoding mechanism for the model adjustment. When the content has large variations, we may encode the frame twice. Otherwise, we encode it only once. In addition, the effect of scene changes on the model update is also considered to reduce the quality deviation from the target. Experimental results show that our scheme performs well in various test videos.
Sun, Chen-Hsaing, and 孫振翔. "The Improved Distributed Video Codec under Multiple Description Coding Framework." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/71259798298453459481.
Full text國立臺灣科技大學
電機工程系
96
Multiple Description Coding (MDC) is an effective solution of multi-media transmission in the jammed internet and unstable wireless networks. MDC promises the stability and reliability of multi-media communication with multiple transmission paths. We have proposed an improved MDC architecture that: (1) decomposes the original video into two sub-videos which are encoded using MC-EZBC coder; and (2) correlations between sub-videos are exploited and encoded using the Distributed Video Coder (DVC); (3) Apply predictive coding framework between sub-video and DVC bit stream; and well exploit the correlations between video to enhance PSNR at the same bit rate;(4) combine the encoded data of above two parts to generate one description. The generated two descriptions are transmitted independently and are protected by FEC (Forward Error Correction) algorithm. The PSNR of reconstructed video can be improved to 0.5 to 1 dB higher, as compared to previous researches. Experiments also show that, by effectively integrate residual DVC coding with MDC, the stability and quality are largely enhanced.
Lai, Hung-Liang, and 賴宏亮. "Adaptive Leaky Prediction Technique under Multiple Description Video Coding Framework." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/22339505678368670002.
Full text國立清華大學
電機工程學系
93
In recent years, with the development of the internet, video streaming across packet-lossy networks has received much attention. But the problem of packet loss is still difficult to deal with. Since video coding uses motion compensation prediction, there will be error propagation problems in the decoding if some packets of previous frames are lost. To solve the problem of the error propagation, the well-known approach is leaky prediction. However, how to find an adaptive optimal leaky factor in the leaky prediction remains a challenging task. For such a task, we propose a new solution for the leaky factor of leaky prediction under Base MDSQ. Generally speaking, our optimal leaky factor is still depending on the packet loss rate. But the natural property of videos such as the complexity or amount of movement also affects the decision of the leaky factor. Moreover, it is necessary that the whole framework of coder must be considered because some properties of coder such as multiple description coding or Error Concealment technique can help for the reconstruction of lost frames. Therefore, we propose a new method about how to find the optimal leaky factors depending on the loss rate, the natural property of videos and the whole framework of the coder. From the simulation results, we can see that the proposed algorithm provides better performance than other leaky factors. And our method can have fine performance for the videos with different properties.
Li, Chih Han, and 李致翰. "A Framework for EEG Compression with Compressive Sensing and Huffman Coding." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/28431597266494445081.
Full text國立清華大學
電機工程學系
103
Compressive sensing (CS) is an emerging technique for data compression in recent years. In this thesis, it is used to compress electroencephalogram (EEG) signals. CS includes two major principles. The one is the sparsity, and the other is incoherence. However, the EEG signal is not sparse enough. Thus, CS can only recover the compressed EEG signals in low compression ratios. Under high compression ratios, the recovery of compressed EEG signals fails after the compression. The compression ratios where EEG can be reconstructed with high quality is not high enough to let the system become energy-efficient, so the compression will be not meaningful. Thus, we want to find a solution to make CS become practical in compressing EEG signals when high compression ratios are adopted. From surveying literatures, the approaches to increase performance in CS can be separated into three classes. First, design a more strong reconstruction algorithm. Second, find a dictionary where the EEG signals can have sparse presentation in such transform domain. Lastly, combine the CS with other compression techniques. Here we take the first and third approaches to achieve the goal. First of all, we proposed a modified iterative pseudo-inverse multiplication (MIPIM) with the complexity O(KMN) where M is the dimension of the measurements, N is the dimension of the signal, and K is the sparse level. This complexity is lower than the most existing algorithms. Next, we extend MIPIM into a multiple measurements (MMV) algorithm. It is called as simultaneously MIPIM (SMIPIM). This aims at recovering all channel signals at the same time and taking the correlation among channels to increase performance. The SMIPIM can reduce normalized mean square error (NMSE) by 0.06 comparing with the classical algorithms in CS. For the part of combining the CS with other compression techniques, we adopt an existing framework which takes an information from server or receiver node to combine CS and Huffman coding efficiently. The framework was proposed to increase the compression to apply to the telemedicine with EEG signals, but we found a shortcoming. It takes a long computational time on running the algorithm which produces information. It will make the instant telemedicine unavailable because sensors can not transmit data until the information are received. Therefore, we propose an algorithm to replace the existing one. The complexity changes from O(L^5) to O(L^2) where L is the number of channels. In our experiment, our algorithm is faster 10^5 times than the existing one. Finally, we carried out the simulation of entire system. We simulated the framework with our proposed algorithm for computing the information of correlation of channels and our SMIPIM for reconstruction. In a compression ratio 3 : 1, the NMSE is 0.0672 , and the original CS framework with Block Sparse Bayesian Learning Bound Optimization (BSBLBO) is 0.1554. On the other hand, depending on the minimum acceptable NMSE which is 0.09 for EEG signals, we have a compression ratio 0.31. Moreover, we take the compression ratio to estimate how many channels we can transmit in a fixed transmission bandwidth. The result shows that the number of channels can increase 16 with Bluetooth 2.0 and 35 with ZigBee for wireless transmission after the work.
Liu, Jen-Chang, and 劉震昌. "The Stereo Audio Coding in the Framework of MPEG1 Layer I, II." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/16573177512286166460.
Full text國立交通大學
資訊工程學系
84
The purpose of stereo audio signal coding is to reduce the required bit rate, while maintaining the signal quality after decoding. The ISO MPEG1 is the most widely used audio compression standard in many commercial applications. Among the vast commercial products, MPEG1 layers I and II coding processes are most widely adopted. MPEG1 layer II can achieve a transparent audio quality above 2x128 kbits/s by independent coding of the left and the right channels. With the use of joint stereo coding technique, such as intensity stereo coding in MPEG1, the decoded audio quality can be improved for the bit rate lower than 2x128 kbits/s. In this thesis, we analyze the data redundancy of stereo audio signals. The Karhunen-Loeve (KL) transform and inter-channel prediction methods are applied to exploit and analyze the data redundancy in the framework of MPEG1 layers I and II. On the KL transform, we propose two modified intensity stereo coding algorithms for MPEG1 layers I and II by KL transform to further improve the decoded stereo audio quality at bit rate below 2x128 kbits/s. Subjective and objective measurements show that the two algorithms have better stereo audio quality than the original MPEG1 method. On the inter-channel prediction, we consider the coding gains along with various parameters such as prediction order, prediction delay, time varying property, the required side information, etc.. The experiment results suggest the applying of inter- channel prediction in the low frequency bands, and transmission of the prediction coefficients once for longer frames to avoid the side information overhead.
Juang, Shyh-Yan, and 莊士賢. "The audio coding in the framework of AC-3:transform, coupling, and dithering." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/56495932938850908421.
Full text國立交通大學
資訊工程學系
85
The purpose of audio coding is to reduce the required bit rate, while maintaining the signal quality after decoding. The AC-3 standard is a widely used audio compression standard in many commercial applications. This thesis considers audio coding under the framework of AC3 through three design issues: time-domain-aliasing-cancellation (TDAC) transform, coupling, and dithering. The AC3 is a transform coding and the TDAC plays the role to transform a signal from time-domain into frequency domain. Since that the computing complexity of the TDAC is high, the development of fast computation algorithms for the TDAC has been a major concern for real-time applications. The first issue of this thesis develops a fast algorithm for the TDAC. The fast algorithm is derived through two steps. The first step converts the six formulae, which are for the three forward-inverse transforms used in the TDAC, into a unified formula known as discrete cosine transform through data permutation in the input and the output. For the discrete cosine transform, the second step develops a fast computing algorithm which takes special consideration on the stack size limitation in x86 CPU in addition to achieving the low complexity as traditional fast algorithms. The second issue of the thesis is on the coupling strategies in AC3. Nowadays, the CD quality audio sequence can be compressed into 2x128 kbits per second by independent coding of the left and the right channels. Coupling strategies can provide the design space exploiting the human hearing knowledge which indicates low human sensitivity of the stereophonic in high frequency components. With the use of coupling coding techniques, the compressed audio quality can be improved for the bit rate lower than 2x128 Kbits/s. This thesis presents five algorithms which are applicable to coupling strategies in AC3. We compare the five algorithms through theoretical analysis, objective quality measure and subjective quality measure. Among the five algorithms, three are newly developed. The three algorithms are developed based on the KL transform. Subjective and objective measurements show that the coupling strategy based on the KL transform can provide better stereo audio quality than the others. The third issue of the thesis is on the dithering signals. Dithering can avoid the undesired noise from quantization and provide the means to have better stereo signals. This thesis confirms the above two benefits through experiments and provides the strategies to apply the dithering in the framework of AC3.
Pai, Srikanth B. "Classical Binary Codes And Subspace Codes in a Lattice Framework." Thesis, 2015. http://etd.iisc.ernet.in/handle/2005/2708.
Full textLiang, Chia-Ming, and 梁家銘. "Applying Lattice Vector Quantization to Audio Coding in the Framework of MPEG Layer I." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/52678765025140122477.
Full text國立交通大學
資訊工程學系
84
Lattice vector quantizer is a uniform quantizer, and it can conform the quantization error to the masking threshold computed from the psychoacoustic model analysis. In the thesis, we attempt to apply lattice vector quantization (VQ) to audio coding and investigate the potential of lattice VQ in very low bitrate coding. The encoding structure of MPEG layer I is chosen as the backbone of our proposed coder because MPEG is a inter-national audio coding standard and it will be persuasive when it is taken as a benchmark. We will demonstrate the procedure to design an optimal lattice VQ based on the root lattice in a given dimension. The theoretical benefit of lattice VQover scalar quantization will be analyzed and verified through experiments. In addition to verifying the geometric compactness of lattice VQ, we also make proper adjustment to the lattice VQ for taking advantage of the nonuniform distribution of normalized input vectors. The experiment results show that at 32 kbps, we can obtain average 1.36 dB gain from the geometric compactness of lattice VQ and additional 0.18 dB from the nonuniform distribution of normalized input vectors. Therefore, it is convincible that lattice VQ is applicable in very low bit rate audio coding.
Liang, Jia-Ming, and 梁家銘. "Applying Lattice Vector Quantization to Audio Coding in the Framework of MPEG Layer I." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/08122722642763898422.
Full textLee, Lien-Yu, and 李聯育. "Low complexity Subband/Wavelet Framework for Scalable Video Coding Based on the H.264/AVC." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/52375342680726556036.
Full text國立成功大學
電機工程學系碩博士班
97
The subband/wavelet coding was adopted by the H.264/SVC standard. The SBC use 9/7 wavelet transform for DCT-based H.264/SVC. The 9/7 DWT need lots of computation and increase complexity. We proposed a new SBC structure for low complexity. For hardware, the new SBC structure is easy for implementation. The compression efficiency of the new SBC is higher than JSVM, and lower than SBC. But the efficiency between the new SBC and SBC is similar.
Rapaka, Krishnakanth. "A Novel Multi-Symbol Curve Fit based CABAC Framework for Hybrid Video Codec's with Improved Coding Efficiency and Throughput." Thesis, 2012. http://hdl.handle.net/10012/7032.
Full text(8187867), Abubakr O. Alabbasi. "A QUANTITATIVE FRAMEWORK FOR CDN-BASED OVER-THE-TOP VIDEO STREAMING SYSTEMS." Thesis, 2020.
Find full textZhang, Y. "Investigating collaboration in art and technology." Thesis, 2008. http://hdl.handle.net/10453/37565.
Full textWith the rapid development in computer technology in recent years, the arrival of digital media and computational tools has opened up new possibilities for creative practice in art, where collaboration between digital art practitioners and computer technologists often happens. The study of interdisciplinary collaboration in art and technology offers great opportunities for investigation of creativity and the role of new technology. This thesis presents an investigation into interdisciplinary collaboration between artists and technologists based on a series of case studies selected from actual art- technology projects. Two analysis techniques were used in this research: context analysis, which provides the breadth of the analysis, and protocol analysis, which provides the depth of the analysis. During the analysis process, two coding schemes, which are the context analysis coding scheme and the protocol analysis coding scheme, were developed, evaluated and refined over a series of case studies. Using the coding schemes, the results of the analysis drawn from different cases are compared and the implications are discussed. The findings provide insights into art- technology collaboration in the creative process, in particular, the features of communication and the role of mediation tools. The outcomes of this thesis are: • The analysis framework, consisting of the context analysis coding scheme and the protocol analysis coding scheme, which has been developed and applied to a series of case studies and has been tested for effectiveness and reliability. • The findings, with the assistance of the analysis framework, provide a better understanding of the nature of the interaction between artists and technologists during a creative process. This includes: o How communication behaviour is distributed between artists and technologists; o What the role of computer tools is during the creative process and how these tools can affect artists’ and technologists’ communication behaviour; o How the collaborative creative process is facilitated by external mediation tools, such as computers, interactive artefacts and physical objects. There are two main contributions of the thesis: first, the analysis framework can serve as a powerful and robust analysis tool for future research in the filed of art- technology collaboration or other related domains. Second, the findings provide a better understanding of the collaborative process, in particular, how mediation tools support creative practice between artists and technologists