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    题名: A Strategic Decomposition for Adaptive Image Transmission
    作者: Chang, Rong-chi;Shih, Timothy K.;Hsu, Hui-huang
    贡献者: 淡江大學資訊工程系
    关键词: progressive image transmission;bit plane method;pixel interpolation;image coding;network applications
    日期: 2008-05
    上传时间: 2010-08-09 19:17:54 (UTC+8)
    出版者: 臺北市:中央研究院資訊科學研究所
    摘要: Progressive image transmission (PIT) transmits the most significant portion of a picture, followed by its less important portions. The mechanism can be used in Webbased applications while users are browsing images. However, most PIT methods use the same pixel interpolation scheme for the entire picture, without considering the differences among image blocks. This paper analyzes the efficiency of pixel interpolation schemes and test several decomposition mechanisms. The contribution results in an adaptive image transmission scheme, which takes the differences of picture portions into consideration. Moreover, this study tested 200 pictures in different categories and parameters. In consequence, the overall bit rates can be reduced significantly with good PSNR values and user satisfaction. The visual result is superior to progressive JPEG on both objective (quantitative) and subjective (human) measures. An error recovery procedure is also implemented in case that the transmitted pictures need to be fully recovered.
    關聯: Journal of Information Science and Engineering 24(3), pp.691-707
    显示于类别:[資訊工程學系暨研究所] 期刊論文

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