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检索条件"主题词=Computer vision and image processing techniques"
1042 条 记 录,以下是831-840 订阅
排序:
Colour image edge detector based on quaternion convolution
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ELECTRONICS LETTERS 1998年 第10期34卷 969-971页
作者: Sangwine, SJ Univ Reading Dept Engn Reading RG6 6AY Berks England
A new type of edge-detecting filter is presented, based on a new type of image convolution in which colour images are convolved with a pair of quaternion-valued (hypercomplex) masks. When applied to a colour image, th... 详细信息
来源: 评论
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
来源: 评论
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.
来源: 评论
Modifications on morphology-based image coding
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ELECTRONICS LETTERS 2001年 第7期37卷 421-422页
作者: Cai, ZH Subramanian, KR Cheng, TH Nanyang Technol Univ Sch EEE Singapore 639798 Singapore
An extension uf morphology-based image coding is presented. Tv achieve better coding efficiency neighbour coefficients are included into the significance m;ip predictor and different subband quantisers are employed to... 详细信息
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Adaptive image normalisation based on block processing for enhancement of fingerprint image
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ELECTRONICS LETTERS 2002年 第14期38卷 696-698页
作者: Kim, BG Park, DJ Korea Adv Inst Sci & Technol Dept Elect Engn & Comp Sci Yusong Gu Taejon 305701 South Korea
Improved algorithms for enhancement of fingerprint images, which have the adaptive normalisation based on block processing, in the automatic fingerprint verification system, are proposed. To obtain an enhanced fingerp... 详细信息
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Reference block updating when tracking with block matching algorithm
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ELECTRONICS LETTERS 2000年 第4期36卷 309-310页
作者: Peacock, AM Matsunaga, S Renshaw, D Hannah, J Murray, A Univ Edinburgh Dept Elect Engn Edinburgh EH9 3JL Midlothian Scotland
An important problem when using the block matching algorithm to track objects is how to update the reference block to take account of the changing target appearance. A variety of update strategies are reported and com... 详细信息
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Tracking non-rigid objects in clutter background with geometric active contours
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ELECTRONICS LETTERS 2002年 第12期38卷 550-551页
作者: Cen, F Qi, F Shanghai Jiao Tong Univ Dept Comp Sci & Engn Shanghai 200030 Peoples R China
A new variational framework of geometric active contours to track multiple non-rigid moving objects in the clutter background is presented. Incorporating motion edge information, it consists of motion detection and tr... 详细信息
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Feature-bit-plane matching technique for estimation of motion vectors
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ELECTRONICS LETTERS 1998年 第11期34卷 1090-1091页
作者: Zhang, JJ Ahmad, MO Swamy, MNS Concordia Univ Dept Elect & Comp Engn Ctr Commun & Signal Proc Montreal PQ H3G 1M8 Canada
The authors describe a fast block matching algorithm based on a feature-bit-plane matching scheme in which two types of transformed planes characterising the spatial distribution of pixel intensities of a frame are em... 详细信息
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Modified embedded zerotree wavelet algorithm for fast implementation of wavelet image codec
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ELECTRONICS LETTERS 2000年 第20期36卷 1713-1714页
作者: Patel, S Srinivasan, S Indian Inst Technol Dept Elect Engn Madras 600036 Tamil Nadu India
Embedded zerotree wavelet (EZW) coding, proposed by Shapiro, is one of the commonly used algorithms for wavelet image coding. The speeds of coding and decoding are important issues in the implementation of an image co... 详细信息
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Data scheduling scheme for power reduction in DWT-based image coders
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ELECTRONICS LETTERS 2002年 第9期38卷 408-409页
作者: Seth, K Srinivasan, S Indian Inst Technol Dept Elect Engn Madras 600036 Tamil Nadu India
A new memory data scheduling scheme is used for designing a two-dimensional discrete wavelet transform (2D-DWT) core for ASIC implementation. This scheme reduces by 20 to 30% the overall switching activity in the 2D-D... 详细信息
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