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检索条件"主题词=transform coding"
10501 条 记 录,以下是4851-4860 订阅
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An improved MDCT domain frequency estimation method
An improved MDCT domain frequency estimation method
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IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)
作者: Yujie Dun Guizhong Liu School of Electronic and Information Engineering Xi'an Jiaotong University Xi'an China
In this work, an improved low complexity high precision method for frequency estimation in the Modified Discrete Cosine transform (MDCT) domain is presented. The method is derived from the analytical expression of the... 详细信息
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Evaluation of chroma subsampling for high dynamic range video compression
Evaluation of chroma subsampling for high dynamic range vide...
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IEEE International Conference on Electronics, Circuits and Systems (ICECS)
作者: Ronan Boitard Mahsa T. Pourazad Panos Nasiopoulos University of British Columbia Vancouver Canada TELUS Communications Inc. Vancouver Canada
Subsampling chroma channels of video content is a processing performed in most video distribution pipelines. In such pipelines, chroma subsampled content also undergoes video coding, using a codec, before being distri... 详细信息
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Zero-error watermarking on jpeg images by shuffling huffman tree nodes
Zero-error watermarking on jpeg images by shuffling huffman ...
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IEEE Visual Communications and Image Processing (VCIP)
作者: Yongdong Wu Robert H. Deng Cryptography and Security Department Institute for Infocomm Research Singapore School of Infomation Systems Singapore Management University Singapore
This paper proposes a full fidelity watermarking on JPEG bitstreams. That is, without a designated decoder/player, the watermarked bitstream can be decompressed to the original one. To this end, the scheme modifies th... 详细信息
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Semi-fragile image watermarking algorithm based on visual features
Semi-fragile image watermarking algorithm based on visual fe...
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International Conference on Wavelet Analysis and Pattern Recognition (ICWAPR)
作者: Sheng-Bing Che Bin Ma Zu-Guo Che College of computer science Central South University of Forestry and Technology Changsha Hunan China
In order to improve the invisibility and the robust ness of semi-fragile watermark,at first the paper puts forward the idea which embedded watermark based on the attacks' characteristic, then the characteristic an... 详细信息
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An automatic approach to lossy compression of images corrupted by Poisson noise
An automatic approach to lossy compression of images corrupt...
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Microwaves, Radar and Remote Sensing Symposium, MRRS
作者: V.V. Lukin M.S. Zriakhov N.N. Ponomarenko Arto Kaarna Department of Transmitters Receivers and Signal Processing Kharkov National Aerospace University KhAI Kharkiv Ukraine Department of Information Technology Lappeenranta University of Technology Lappeeranta Finland
Lossy compression of images corrupted by Poisson noise is considered. Peculiarities on noisy images are discussed. An automatic approach in selection of a parameter that controls compression ratio (CR) is proposed. It... 详细信息
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New Standardized Extensions of MPEG4-AVC/H.264 for Professional-Quality Video Applications
New Standardized Extensions of MPEG4-AVC/H.264 for Professio...
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IEEE International Conference on Image Processing
作者: Gary J. Sullivan Haoping Yu Shun-ichi Sekiguchi Huifang Sun Thomas Wedi Steffen Wittmann Yung-Lyul Lee Andrew Segall Teruhiko Suzuki Microsoft Corporation USA Thomson Inc. USA Mitsubishi Electric Corporation Limited Japan Panasonic Research and Development Center Germany GmbH Germany Sejong University South Korea Sharp Laboratories of America Inc. USA Sony Corporation Japan
To support high quality video applications, the Joint Video Team (JVT) has recently added five new profiles, two new supplemental enhancement information (SEI) messages, and two new extended gamut color space indicato... 详细信息
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Comparison of 3D set partitioning methods in hyperspectral image compression featuring an improved 3D-SPIHT
Comparison of 3D set partitioning methods in hyperspectral i...
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Data Compression Conference (DCC)
作者: Xiaoli Tang Sungdae Cho W.A. Pearlman Center for Image Processing Research Rensselaer Polytechnic Institute Troy NY USA
Summary form only given. Hyperspectral images were generated through the collection of hundreds of narrow and contiguously spaced spectral bands of data producing a highly correlated long sequence of images. An invest... 详细信息
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JPEG2000. Part 10. Volumetric data encoding
JPEG2000. Part 10. Volumetric data encoding
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IEEE International Symposium on Circuits and Systems (ISCAS)
作者: P. Schelkens A. Munteanu A. Tzannes C. Brislawn Department of Electronics and Informatics Interdisciplinary Institute for Broadband Technology Vrije Universiteit Brussel Brussels Belgium Aware Inc. Bedford MA USA CCS Department Los Alamos National Laboratory Los Alamos NM USA
The joint photographic experts group (JPEG) committee (ISO/IEC JTC1/SC29/WG1) is currently pursuing the standardization of a three-dimensional extension of the JPEG-2000 standard (Parts 1 and 2) to support the encodin... 详细信息
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Non-reference image quality assessment for biometric presentation attack detection
Non-reference image quality assessment for biometric present...
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International Workshop on Biometrics and Forensics (IWBF)
作者: Amrit Pal Singh Bhogal Dominik Söllinger Pauline Trung Andreas Uhl Universitat Salzburg Salzburg Salzburg AT Department of Computer Sciences University of Salzburg Austria
Non-reference image quality measures are used to distinguish real biometric data from data as used in presentation / sensor spoofing attacks. An experimental study shows that based on a set of 6 such measures, classif... 详细信息
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Study of the subjective performance of a range of MPEG-2 encoders
Study of the subjective performance of a range of MPEG-2 enc...
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IEEE International Conference on Image Processing
作者: G. Keesman A. Cotton D. Kessler J. De Lameillieure J.-P. Henot A. Nicoulin D. Kalivas Philips Research Laboratories Eindhoven Netherlands BBC Research and Development UK HHI Germany EPF Lausanne Switzerland INTRACOM S.A. Greece
This contribution represents the results of subjective tests organized in November '94 by the HAMLET subgroup WP2. These tests, carried out in accordance with Rec. ITU-R 500-5, compare the performances of differen... 详细信息
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