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检索条件"主题词=transform coding"
10295 条 记 录,以下是4561-4570 订阅
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A Network-Aware Error-Resilient Video coding Using Adaptive Intra and Reference Selection Refresh
A Network-Aware Error-Resilient Video Coding Using Adaptive ...
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IEEE International Symposium on Computer Network and Multimedia Technology, CNMT
作者: Yiran Zhou Weiwei Xu Yaowu Chen Institute of Advanced Digital Technology and Instrumentation University of Zhejiang Hangzhou China
Video quality suffers significant degradation when transmitted over error-prone channel. In this paper, a novel error-resilient coding scheme based on the H.264/AVC standard is proposed to tackle this challenge. Unlik... 详细信息
来源: 评论
Block selective motion estimation for low-complexity video coding
Block selective motion estimation for low-complexity video c...
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International Conference on Digital Signal Processing (DSP)
作者: Arthur Schuchter Andreas Uhl Department of Computer Sciences University of Salzburg Austria
A fast block selective motion estimation/compensation method is proposed. Motion indicators are used to determine the motion content of each frame on a block basis. These motion indicators are used in an MPEG-2 video ... 详细信息
来源: 评论
SAR image compression based on wavelet packets and sub-band coding
SAR image compression based on wavelet packets and sub-band ...
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European Radar Conference (EURAD)
作者: Navneet Agrawa K. Venugopalan Maharana Pratap University of Agriculture and Technology Udaipur Rajasthan IN Department of Computer Science MLSU University College of Science Udaipur Rajasthan India Department of ECE College of Technology and Engineering Udaipur Rajasthan INDIA
Synthetic aperture radar (SAR) is an imaging technique, which provides high-resolution images. The high resolution in the range direction is achieved by using large bandwidth signals and that in the azimuth direction ... 详细信息
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New Watermarking Algorithm with coding Efficiency Improvement and Authentication in Video Surveillance
New Watermarking Algorithm with Coding Efficiency Improvemen...
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International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIHMSP)
作者: Chuen-Ching Wang Ming-Jun Chi Yao-Tang Chang Department of Electrical Engineering National Changhua University of Education Changhua Taiwan Department of Electro-Optical Science and Engineering Kao Yuan University Kaohsiung Taiwan
This paper proposes a fragile watermarking algorithm named compression watermarking algorithm (CWA) which provides compression and authentication functions to apply in MJPEG of video surveillance system. The watermark... 详细信息
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Idempotent H.264 intraframe multi-generation coding
Idempotent H.264 intraframe multi-generation coding
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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
作者: Ziyuan Zhu Tao Lin VLSI Laboratory University of Tongji Shanghai China
This paper studies the idempotence of H.264 intraframe multi-generation coding. We analyze the H.264 transform and quantization and reveal that for some quantization parameters there always exists at least one clippin... 详细信息
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An information-theoretic approach for removing feedback channels in distributed video coding
An information-theoretic approach for removing feedback chan...
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International Conference on Advances in Computational Tools for Engineering Applications, ACTEA
作者: Charles Yaacoub Joumana Farah Faculty of Sciences and Computer Engineering Holy Spirit University of Kaslik Jounieh Lebanon Signal and Image Processing Department Télécom Paris Technology Paris France
This paper presents an information-theoretic approach for estimating the compression bounds of Wyner-Ziv frames in a distributed video coding system, taking into account the amount of motion in the captured video scen... 详细信息
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Embedded color image coding with context adaptive wavelet difference reduction
Embedded color image coding with context adaptive wavelet di...
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IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)
作者: Poonlap Lamsrichan Teerapat Sanguankotchakorn Electrical Engineering Department Faculty of Engineering Kasetsart University Bangkok Thailand Telecommunications Field of Study School of Engineering and Technology Asian Institute of Technology Pathum Thani Thailand
A new color image coding technique is proposed in this paper. The technique is based on the efficient grey-scaled wavelet-based image coding, the context adaptive wavelet difference reduction - CAWDR. The coder exploi... 详细信息
来源: 评论
Direction-adaptive context modeling for sign coding in embedded wavelet image coder
Direction-adaptive context modeling for sign coding in embed...
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IEEE International Conference on Image Processing
作者: Sungjei Kim Jinwoo Jeong Yong-Goo Kim Yungho Choi Yoonsik Choe Department of Electrical and Electronic Engineering Yonsei University Seoul South Korea Department of Electrical Engineering Konkuk University Seoul South Korea
The conventional embedded wavelet image coder exploiting the adjacent neighbors is limited to efficiently compress the sign coefficients, since the wavelet coefficients are highly correlated along the dominant image f... 详细信息
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Adaptive quantization with balanced distortion distribution and its application to H.264 intra coding
Adaptive quantization with balanced distortion distribution ...
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IEEE International Conference on Image Processing
作者: Xiang Yu Da-ke He En-hui Yang Research in Motion Limited Waterloo ONT Canada Electrical and Computer Engineering University of Waterloo Waterloo ONT Canada
Quantization in H.264 is achieved in the DCT domain using scalar quantizers, which assume a sum distortion constraint and often produce considerably larger distortions on block boundaries than inside a block in the pi... 详细信息
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Multi-hypothesis based multi-view distributed video coding
Multi-hypothesis based multi-view distributed video coding
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Picture coding Symposium, PCS
作者: Yongpeng Li Hongbin Liu Xianming Liu Siwei Ma Debin Zhao Wen Gao Chinese Academy of Sciences Beijing China School of Computer Science and Technology Harbin Institute of Technology Harbin China School of Electronics Engineering and Computer Science Peking University Beijing China
This paper proposes a multi-hypothesis based Wyner-Ziv (WZ) decoder for the multi-view distributed video coding (MDVC). Two hypotheses, the intra-view SI and the interview SI, are fed together into the WZ decoder in t... 详细信息
来源: 评论