外文翻譯----一種基于嵌入式零樹(shù)小波算法的魯棒圖像壓縮新方法二(已修改)
2025-06-01 11:46 本頁(yè)面
【正文】 1 A New Method of Robust Image Compression Based on the Embedded Zerotree Wavelet Algorithm Charles D. Creusere III. ROBUST EZW (REZW) ALGORITHM The basic idea of the REZW image pression algorithm is to divide the wavelet coefficients up into S groups and then to quantize and code each of them independently so that S different embedded bitstreams are created. These bitstreams are then interleaved as appropriate (., bits, bytes, packets, etc.) prior to transmission so that the embedded nature of the posite bitstream is maintained. In the remainder of this paper we assume that individual bits are interleaved. For the REZW approach to be effective, each group of wavelet coefficients must be of equal size and must uniformly span the image. A similar method has been proposed in to parallelize the EZW algorithm, but that method instead groups the coefficients so that data transmission between processors is minimized. What do we gain by using this new algorithm over the conventional on
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