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1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175)最新文献

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Progressive coding of medical volumetric data using three-dimensional integer wavelet packet transform 基于三维整数小波包变换的医学体积数据递进编码
1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175) Pub Date : 1998-12-07 DOI: 10.1117/12.334681
Zixiang Xiong, Xiaolin Wu, D. Yun, W. Pearlman
{"title":"Progressive coding of medical volumetric data using three-dimensional integer wavelet packet transform","authors":"Zixiang Xiong, Xiaolin Wu, D. Yun, W. Pearlman","doi":"10.1117/12.334681","DOIUrl":"https://doi.org/10.1117/12.334681","url":null,"abstract":"We examine progressive lossy to lossless compression of medical volumetric data using three-dimensional (3D) integer wavelet packet transforms and set partitioning in hierarchical trees (SPIHT). To achieve good lossy coding performance, we describe a 3D integer wavelet packet transform that allows implicit bit shifting of wavelet coefficients to approximate a 3D unitary transformation. We also address context modeling for efficient entropy coding within the SPIHT framework. Both lossy and lossless coding performance are better than those previously reported.","PeriodicalId":180426,"journal":{"name":"1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121990998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 50
Multimedia technology for hearing impaired people 听障人士的多媒体技术
1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175) Pub Date : 1998-12-07 DOI: 10.1109/MMSP.1998.738932
A. Czyżewski, H. Skarzynaski, B. Kostek, A. Geremek
{"title":"Multimedia technology for hearing impaired people","authors":"A. Czyżewski, H. Skarzynaski, B. Kostek, A. Geremek","doi":"10.1109/MMSP.1998.738932","DOIUrl":"https://doi.org/10.1109/MMSP.1998.738932","url":null,"abstract":"The development of advanced hearing prosthetic aids and cochlear implants allows many hearing impaired people to receive audio signals. A multimedia catalogue of hearing impairments was developed which includes the results of audiology tests, medical description of the subjects with different types of hearing impairments and sound examples illustrating consequences of a hearing loss. Moreover, within the framework of research projects some digital signal processing applications were developed for hearing prostheses, such as a digital waveguide model of hearing aid acoustical parts and a neural network-based beamformer. Another multimedia database was created in order to facilitate the diagnosis of hearing nerve sensitivity on the basis of electrostimulation tests. Some results of the above multimedia signal processing applications are shown.","PeriodicalId":180426,"journal":{"name":"1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122199108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Denoising JPEG images by re-application of JPEG 通过重新应用JPEG对JPEG图像进行去噪
1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175) Pub Date : 1998-12-07 DOI: 10.1109/MMSP.1998.739048
Aria Nosratinia
{"title":"Denoising JPEG images by re-application of JPEG","authors":"Aria Nosratinia","doi":"10.1109/MMSP.1998.739048","DOIUrl":"https://doi.org/10.1109/MMSP.1998.739048","url":null,"abstract":"A novel method is proposed for post-processing of JPEG-encoded images, in order to reduce coding artifacts and enhance visual quality. Our method simply re-applies JPEG to the shifted versions of the already-compressed image, and forms an average. This approach, despite its simplicity, offers better performance than other known methods, including those based on nonlinear filtering, POCS, and redundant wavelets.","PeriodicalId":180426,"journal":{"name":"1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114072708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 36
A framework for interactive courses and virtual laboratories 交互式课程和虚拟实验室的框架
1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175) Pub Date : 1998-12-07 DOI: 10.1109/MMSP.1998.739007
L. Balmelli, S. Ayer, Yves Cheneval, M. Vetterli
{"title":"A framework for interactive courses and virtual laboratories","authors":"L. Balmelli, S. Ayer, Yves Cheneval, M. Vetterli","doi":"10.1109/MMSP.1998.739007","DOIUrl":"https://doi.org/10.1109/MMSP.1998.739007","url":null,"abstract":"Theory and experimentation are both complementary in sciences. Where the former builds up a formal framework, the latter helps humans to develop their intuition. Hard-printed books are great supports for theorems and formulas repositories, but stay desperately static when providing examples. This paper presents some directions towards a framework for digital publishing, distance learning and computer-aided teaching. The interactive digital signal processing (DSP) book is built in this framework and provides a concrete example to the reader. The book, reachable at http://lcavwww.epfl.ch/DSPBook, is used as a digital support for a course taught by our lab to a third year undergraduate class in electrical engineering.","PeriodicalId":180426,"journal":{"name":"1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128269590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Remote control and visualization of scanning probe microscopes via Web 通过Web实现扫描探针显微镜的远程控制和可视化
1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175) Pub Date : 1998-12-07 DOI: 10.1109/MMSP.1998.738936
A. Razdan, Junyi Sun
{"title":"Remote control and visualization of scanning probe microscopes via Web","authors":"A. Razdan, Junyi Sun","doi":"10.1109/MMSP.1998.738936","DOIUrl":"https://doi.org/10.1109/MMSP.1998.738936","url":null,"abstract":"Our efforts in bringing the scanning probe microscope (SPM) live data available on the Web have been successful. This work is being pursued under the aegis of the IN-VSEE project targeted to bring SPM data live to community colleges, high school and other research labs/classroom. We have further advanced this to provide the capability of remote operation of the SPM via the Web. The truly remote operator can control many functions of the microscope with reasonable security and ease. The latter marks a milestone in use of the Web for truly interactive bi-directional communication involving feedback and control of an instrument. The architecture also incorporates an interactive \"chat\" channel among the observers and the operator(s) and compressed video delivery in separate windows. Further, since the SPM data is inherently 3-dimensional, a plug-in has also been developed to display the live data as 5-dimensional model, with support for zoom, pan, rotation, etc.","PeriodicalId":180426,"journal":{"name":"1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175)","volume":"100 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131521747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Artifact reduction in low bit rate wavelet coding with robust nonlinear filtering 基于鲁棒非线性滤波的低比特率小波编码伪影抑制
1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175) Pub Date : 1998-12-07 DOI: 10.1109/MMSP.1998.738998
Mei-Yin Shen, C.-C. Jay Kuo
{"title":"Artifact reduction in low bit rate wavelet coding with robust nonlinear filtering","authors":"Mei-Yin Shen, C.-C. Jay Kuo","doi":"10.1109/MMSP.1998.738998","DOIUrl":"https://doi.org/10.1109/MMSP.1998.738998","url":null,"abstract":"A postprocessing algorithm for compression artifact reduction in low-bit-rate wavelet coding is proposed in this work. We first formulate the artifact reduction problem as a robust estimation problem. Under this framework, the artifact-free image is obtained by minimizing a cost function that accounts for the smoothness constraint as well as image fidelity. Unlike the traditional approach that adopts gradient descent search for optimization, a set of nonlinear filters is used to calculate the approximate global minimum. The nonlinear filtering approach reduces the number of the objective function evaluation and increases the speed of convergence. It is shown by experimental results that the proposed approach can alleviate wavelet coding artifacts efficiently with a low computational cost.","PeriodicalId":180426,"journal":{"name":"1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175)","volume":"310 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131896617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 32
Efficient browsing in multimedia databases using intelligent agents and content-based retrieval schemes 使用智能代理和基于内容的检索方案高效浏览多媒体数据库
1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175) Pub Date : 1998-12-07 DOI: 10.1109/MMSP.1998.738964
Y. Xirouhakis, G. Votsis, K. Karpouzis, S. Kollias
{"title":"Efficient browsing in multimedia databases using intelligent agents and content-based retrieval schemes","authors":"Y. Xirouhakis, G. Votsis, K. Karpouzis, S. Kollias","doi":"10.1109/MMSP.1998.738964","DOIUrl":"https://doi.org/10.1109/MMSP.1998.738964","url":null,"abstract":"An intelligent multimedia system is developed for efficient retrieval and processing of information stored in multimedia databases. Intelligent agents are employed in order to limit the search into minor subsets of the database; a training strategy is introduced for quick browsing in the database contents. Content-based query and retrieval schemes are also employed to increase the effectiveness of the browsing procedure.","PeriodicalId":180426,"journal":{"name":"1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132103133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Automatic generation of entropy coding programs using Flavor 使用Flavor自动生成熵编码程序
1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175) Pub Date : 1998-12-07 DOI: 10.1109/MMSP.1998.738957
Yihan Fang, A. Eleftheriadis
{"title":"Automatic generation of entropy coding programs using Flavor","authors":"Yihan Fang, A. Eleftheriadis","doi":"10.1109/MMSP.1998.738957","DOIUrl":"https://doi.org/10.1109/MMSP.1998.738957","url":null,"abstract":"Flavor (formal language for audio-visual object representation) is a new programming language for media-intensive applications. It extends the typing system of C++ and Java to incorporate bitstream representation semantics. This allows describing in a single place both the in-memory representation of data as well as their bitstream-level (compressed) representation as well. In this paper, we present our approach of hybrid variable length code segmentation in program code generation for parsing entropy-coded data from the bitstream. We also show that this approach produces a very good tradeoff between space (memory required) and time (decoding speed).","PeriodicalId":180426,"journal":{"name":"1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128277882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
An adaptive filtering method to calculate HRTF 一种计算HRTF的自适应滤波方法
1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175) Pub Date : 1998-12-07 DOI: 10.1109/MMSP.1998.738927
John W. Norris
{"title":"An adaptive filtering method to calculate HRTF","authors":"John W. Norris","doi":"10.1109/MMSP.1998.738927","DOIUrl":"https://doi.org/10.1109/MMSP.1998.738927","url":null,"abstract":"The objective of virtual 3D sound technology is to convey to the listener an accurate impression of an acoustic environment. This is accomplished by conveying a realistic directional impression of sounds. Most of the successful techniques for doing this are based on the head related transfer function (HRTF). If loudspeakers are used to create the desired sound pressure field, then the cross talk associated with them will need to be compensated for. We present a method that can be used to calculate the required HRTFs using an adaptive filtering method based on the filtered X method of Widrow (1985).","PeriodicalId":180426,"journal":{"name":"1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114856256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A buyer-seller watermarking protocol 买卖双方的水印协议
1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175) Pub Date : 1998-12-07 DOI: 10.1109/MMSP.1998.738949
N. Memon, P. Wong
{"title":"A buyer-seller watermarking protocol","authors":"N. Memon, P. Wong","doi":"10.1109/MMSP.1998.738949","DOIUrl":"https://doi.org/10.1109/MMSP.1998.738949","url":null,"abstract":"Digital watermarks have previously been proposed for the purpose of copy protection and copy deterrence for multimedia content. Copy deterrence using digital watermarks is achieved by inserting a unique watermark into each copy of the watermark content sold which could be used to trace unauthorized copies to the erring buyer. One problem with such an approach is the fact that the buyer whose watermark has been found on unauthorized copies can claim that the unauthorized copy was created or caused (for example, by a security breach) by the seller. In this paper we propose an interactive buyer-seller protocol for invisible watermarking in which the seller does not get to know the exact watermarked copy that the buyer receives. Hence the seller cannot create copies of the original content containing the buyers watermark. However, in case the seller finds an unauthorized copy, he/she can identify the buyer from whom this unauthorized copy has originated and furthermore can also prove this fact to a third party by means of a dispute resolution protocol. Hence, the buyer cannot claim that an unauthorized copy may have originated from the seller.","PeriodicalId":180426,"journal":{"name":"1998 IEEE Second Workshop on Multimedia Signal Processing (Cat. No.98EX175)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115326256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 392
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