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- W2186042510 abstract "The JP&;Z000 staiidard SUQ~OI~S two methods to cmlc regions-ol interest (ROls) in an iniape - the niaxshift method and the scalinxbased method. Compared to the niaxshift method. the scalinp~ bnsed method is preferahle iii ninny npplications becnuse it allows the non-ROI (bnckSmund) region Io he partially coded prior to coding :ill of the ROls. This is accomplished by supporting arbitrary bitplane shift f;icton and by filling the most significant bitplanes of the non-ROI region with zeros after the ROO1 hitplanes have hcai shifted UIJ in value. In both of these methods. the enihedded block coding with optimum truncation (EBCOT) algorithm is then applied to ccile the wavelet coefficients. However. when multiple regions-of-interest need lo he coded, the perfomiance of the scaling-baed method degrades significantly since the EBCOT coder is,no longer able to efficiently code the non-ROI region. which is now less contiguous U compared to the single-ROI case. Also, the large header infomiation that is required in JPEGZMX) for each ROI degrades the coding performance. This paper presents an improved scaling-based method for the efficient coding of multiple, arbitrarily-shaped ROIs using a modified EBCOT algorithm The proposed methcd utilizes the shape information of the different ROIs lo generate a stripe mask, which is then used to optinuze the coding performnnce. Coding results and comparisons with the IPEG2MX) scaling-based method are presented to illustrate the improved performance of the proposed scheme." @default.
- W2186042510 created "2016-06-24" @default.
- W2186042510 creator A5031420051 @default.
- W2186042510 date "2004-01-01" @default.
- W2186042510 modified "2023-09-27" @default.
- W2186042510 title "JPEG2000-BASED SHAPE ADAPTIVE ALGORITHM FOR THE EFFICIENT CODING OF MULTIPLE REGIONS-OF-INTEREST" @default.
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