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检索条件"主题词=Image and video coding"
281 条 记 录,以下是191-200 订阅
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Object-based watermarking scheme robust to object manipulations
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ELECTRONICS LETTERS 2002年 第25期38卷 1656-1657页
作者: Guo, J Shi, PF Shanghai Jiao Tong Univ Inst Image Proc & Pattern Recognit Shanghai 200030 Peoples R China
A new video watermarking scheme is proposed to resist object manipulations. Shape-adaptive DCT and a visual mask were combined to embed the shuffled watermark into the arbitrarily-shaped object. Inertia ellipse was em... 详细信息
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Low-complexity overlapped block motion estimation using pattern-based pixel matching
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ELECTRONICS LETTERS 1999年 第2期35卷 137-138页
作者: Lee, SH Kim, JK Korea Adv Inst Sci & Technol Dept Elect Engn Yusong Gu Taejon 305701 South Korea
A novel motion estimation method is presented which significantly reduces the computational complexity of overlapped block motion estimation (OBME). To eliminate the computationally intensive multiplications of OBME, ... 详细信息
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Still image compression based on 2D discrete wavelet transform
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ELECTRONICS LETTERS 1999年 第22期35卷 1934-1935页
作者: Tan, RHG Zhang, JF Morgan, R Greenwood, A Liverpool John Moores Univ Sch Engn Liverpool L3 3AF Merseyside England
The objective of this Letter is to develop new techniques for enhancing the compression of still images. The features of the proposed algorithm include: (i) zero mapping, which exploits the inherent self-similarity of... 详细信息
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Improved hiding data in images by optimal moderately-significant-bit replacement
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ELECTRONICS LETTERS 2001年 第16期37卷 1017-1018页
作者: Chan, CK Cheng, LM City Univ Hong Kong Dept Elect Engn Hong Kong Hong Kong Peoples R China
An improved data hiding technique by optimal moderately-significant-bit replacement is presented, which can significantly reduce the computational cost and enhance the visual quality of the resulting stego-image.
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Signal-dependent wavelet transform and application to lossless image compression
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ELECTRONICS LETTERS 2002年 第4期38卷 170-172页
作者: Yoo, H Joeng, J Hanyang Univ Dept Elect Commun Engn Seoul 133791 South Korea
A signal-dependent wavelet transform based on the lifting scheme is proposed. The transform can be made reversible (i.e. an integer-to-integer transform). The reversible transform. followed by arithmetic coding, is ap... 详细信息
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Lossless image compression using ordered binary-decision diagrams
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ELECTRONICS LETTERS 2001年 第3期37卷 162-163页
作者: Mateu-Villarroya, P Prades-Nebot, J Univ Politecn Valencia Dept Comun ETSITV Valencia 46022 Spain
A lossless compression algorithm for images based on ordered binary-decision diagrams (OBDDs) is presented. The algorithm finds an OBDD which represents the image exactly and then codes the OBDD efficiently. The resul... 详细信息
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Rate control algorithm using SOFM-based neural classifier
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ELECTRONICS LETTERS 2000年 第12期36卷 1041-1042页
作者: Park, GH Lee, YJ Yonsei Univ Dept Comp Sci Wonju 220710 Kwangwon South Korea
A neural-net based rate control algorithm for MPEG encoders is introduced. It is based on the global rate-distortion model constructed by a self-organising feature map. The performances of the proposed algorithm are b... 详细信息
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Wavelet image coding based on significance extraction using morphological operations
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IEE PROCEEDINGS-VISION image AND SIGNAL PROCESSING 1999年 第4期146卷 206-210页
作者: Zhong, JM Leung, CH Tang, YY Univ Hong Kong Dept Elect & Elect Engn Hong Kong Hong Kong Peoples R China
An algorithm is proposed for improving Servetto et al.'s method of morphological representation of wavelet data (MRWD), which is among the most efficient wavelet-based image compression algorithms. In MRWD, morpho... 详细信息
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Efficient SPIHT-based embedded colour image coding techniques
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ELECTRONICS LETTERS 2001年 第15期37卷 951-952页
作者: Khan, E Ghanbari, M Univ Essex Dept Elect Syst Engn Colchester CO4 3SQ Essex England
Proposed are two novel composite spatial orientation trees for SPIHT-based colour image codecs to link wavelet coefficients of three colour planes together. The simulation results show the improved performance of the ... 详细信息
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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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