New region of interest image coding and its applications for remote sensing image
New region of interest image coding and its applications for remote sensing image
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新型感兴趣区域图像编码及其在遥感图像中的应用
DOI：
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发表时间：
2006-02
期刊：
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通讯作者：
Zhang, Libao
中科院分区：
文献类型：
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作者：
Wang, Ke;Zhang, Libao
提出了一种新的感兴趣区域（ROI）编码——部分乘位面交替移位（pmbasshift）。在pmbashshift中，ROI的部分最有效位面被上移，并且不与背景的任何位面重叠。BG的最高有效位面和ROI系数的一般有效位面通过位面-位面交替缩放进行上移。最后在原始位置得到ROI的最低有效位面和BG的一般有效位面，并将BG系数的最低有效位面下移，使其不与任何位面重叠。该方法既保留了最大位移（Maxshift）方法的优点，又能在不需要任何形状信息的情况下，根据不同的兴趣度对多个roi进行高效压缩。
A new region of interest (ROI) coding called partial multiply bitplane alternating shift (PMBAShift) is presented in this paper. In PMBAShift, the partial most significant bitplanes of ROI are shifted up and no overlap with any bitplane of background (BG). The most significant bitplanes of BG and general significant bitplanes of ROI coefficients are shifted up by bitplane-by-bitplane alternating scaling. Finally, the least significant bitplanes of ROI and the general significant bitplanes of BG are obtained in the original position and the least significant bitplanes of BG coefficients are shifted down and no overlap with any bitplane. The new method not only retains advantages of maximum shift (Maxshift) method, but also efficiently compresses multiple ROIs according to different degrees of interest without any shape information.