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检索条件"主题词=image and video coding"
279 条 记 录,以下是201-210 订阅
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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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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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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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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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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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Automatic prefilter control by video encoder statistics
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ELECTRONICS LETTERS 2002年 第11期38卷 503-505页
作者: Lee, J Lucent Technol Whippany NJ 07981 USA
Noise in original uncompressed video typically degrades the performance of a video encoder. A prefilter is commonly used to remove the noise before compression. Automatic control of the prefilter based on encoder stat... 详细信息
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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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Programmable processor for on-line computing of inverse Haar transform
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ELECTRONICS LETTERS 2001年 第16期37卷 1050-1052页
作者: Martín, O Solana, JM Univ Cantabria Fac Ciencias Dept Elect & Computadores E-39005 Santander Spain
A processor for the one-dimensional inverse Haar transform (1D-IFHT) programmable for N = 8 up to N = 1024, with low latency data flow is presented. It enables on-line computing of both the normalised and the non-norm... 详细信息
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Multiple-thread long-term memory scheme for efficient video coding
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ELECTRONICS LETTERS 1999年 第17期35卷 1452-1453页
作者: Zhang, K Kittler, J Univ Surrey Sch EEIT&M CVSSP Guildford GU2 5XH Surrey England
It has been shown that a background memory can be used to improve the coding efficiency of a video codec. However, this solution is restricted to sequences with a stationary background. Such a restriction seriously li... 详细信息
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