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Although optimal truncation of JPEG2000 compressed imagery provides an image of the highest quality per bitrate in terms of PSNR, the algorithm is highly computationally inefficient because of the removal of compressed image sections that have been previously calculated. The proposed idea utilizes a simple quantization technique prior to Tier I coding to remove many of the coding passes from the imagery...
In this paper, an integer-based post-compression rate-distortion optimization (PCRD-Opt) algorithm for JPEG2000 rate control is presented. The distortion estimation described in the JPEG2000 standard requires non-integer processing, and the overwhelming computational burden on JPEG2000 is the distortion calculation, which is calculated for every bit of the uncompressed image. In this paper, an integer-based...
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