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检索条件"主题词=image and video coding"
281 条 记 录,以下是201-210 订阅
排序:
Technique for designing biorthogonal wavelet filters with an application to image compression
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ELECTRONICS LETTERS 1999年 第18期35卷 1530-1532页
作者: Zhao, Y Swamy, MNS Concordia Univ Dept Elect & Comp Engn Ctr Signal Proc & Commun Montreal PQ H3G 1M8 Canada
A technique for designing new symmetric biorthogonal wavelets from a given symmetric regular filter is presented. The main idea is to find a symmetric complementary filter of a given regular filter such that it has th... 详细信息
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Optimal vertex adjustment method using a Viterbi algorithm for vertex-based shape coding
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ELECTRONICS LETTERS 1999年 第9期35卷 706-707页
作者: Lee, JH Chung, JW Kim, JK Korea Adv Inst Sci & Technol Dept Elect Engn Taejon 305701 South Korea Hyundai Elect Ind Co Ltd Informat & Telecommun R&D Ctr Seoul 137070 South Korea
An optimal vertex adjustment method is presented for vertex-based shape coding. The method optimally shifts the vertices, selected by a conventional vertex selection method, within the window that satisfies the allowa... 详细信息
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Bandwidth renegotiation scheme for VBR video services
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ELECTRONICS LETTERS 1999年 第18期35卷 1509-1510页
作者: Casilari, E Sandoval, F Univ Malaga Dept Tecnol Elect ETSI Telecomun E-29071 Malaga Spain
The authors show how the existence of long term variability in variable bit rate (VBR) video traffic imposes the need for bandwidth renegotiation. In particular. two simple scenarios with a fixed renegotiation interva... 详细信息
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Visual communication at limited colour display capability
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ELECTRONICS LETTERS 2002年 第25期38卷 1657-1659页
作者: Lu, Y Gao, W Wu, F Harbin Inst Technol Dept Comp Sci Harbin 150001 Peoples R China Chinese Acad Sci Inst Comp Technol Beijing 100080 Peoples R China Microsoft Res Asia Beijing 100080 Peoples R China
A novel scheme for visual communication by means of mobile devices with limited colour display capability is proposed. A colour quantisation technique is first proposed based on the perception of the human visual syst... 详细信息
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VQ-based digital image watermarking method
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ELECTRONICS LETTERS 2000年 第14期36卷 1201-1202页
作者: Lu, ZM Pan, JS Sun, SH Harbin Inst Technol Dept Automat Test & Control Harbin 150006 Peoples R China Natl Kaohsiung Inst Technol Dept Elect Engn Kaohsiung 80782 Taiwan
A vector-quantisation (VQ)-based watermarking method is presented which utilises the codebook expansion technique. This method is efficient, provides enhanced security and the watermarked image is robust against the e... 详细信息
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Region coding using improved B-spline surface approximation
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ELECTRONICS LETTERS 2000年 第2期36卷 129-130页
作者: Pan, JH Liao, QM Tsing Hua Univ Dept Elect Engn Beijing 100084 Peoples R China
A new arbitrary region coding algorithm using a B-spline surface is presented. Pixels in the coded region are regarded as valid image data, and the parameters of the B-spline surface are calculated under certain optim... 详细信息
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Fast motion detection in compressed domain for video surveillance
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ELECTRONICS LETTERS 2002年 第9期38卷 409-411页
作者: Pons, J Prades-Nebot, J Albiol, A Molina, J Univ Politecn Valencia Dept Informat Sistemas & Comp Valencia 46022 Spain Univ Politecn Valencia Dept Commun Valencia 46022 Spain
A fast algorithm to detect motion in the compressed domain for video surveillance is presented. The algorithm partially decompresses the video bit stream and performs motion detection from its quantised discrete cosin... 详细信息
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Improved embedded zerotree wavelet coder
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ELECTRONICS LETTERS 1999年 第9期35卷 705-706页
作者: Kang, ES Tanaka, T Ko, SJ Korea Univ Dept Elect Engn Seoul 136701 South Korea Tokyo Inst Technol Grad Sch Sci & Engn Dept Elect & Elect Engn Tokyo 1528552 Japan
An improved embedded zerotree wavelet (IEZW) is presented, which can significantly reduce the scanning and symbol redundancy of the existing EZW.
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MPEG-4 video object-based rate allocation with variable temporal rates
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ELECTRONICS LETTERS 2002年 第19期38卷 1088-1090页
作者: Lee, JW Vetro, A Wang, Y Ho, YS K JIST Puk Gu Kwangju South Korea MERL Murray Hill NJ USA Polytech Univ Brooklyn NY 11201 USA
In object-based coding, bit allocation is performed at the object level and temporal rates of different objects may vary. The proposed algorithm deals with these two issues when coding multiple video objects (MVOs). T... 详细信息
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image watermarking scheme using visual model and BN distribution
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ELECTRONICS LETTERS 1999年 第3期35卷 212-214页
作者: Kim, SW Suthaharan, S Lee, HK Rao, KR Monash Univ Fac Informat Technol Churchill Vic 3842 Australia KAIST Dept Comp Sci Taejon South Korea Univ Texas Dept Elect Engn Arlington TX 76019 USA
A watermarking scheme for digital images that is based on the characteristics of the human visual system is presented. The watermarking scheme inserts a perceptually invisible watermark in the discrete cosine transfor... 详细信息
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