Progressive Passing-number Truncation Coding Algorithm Based on JPEG2000
Beibei Song · Jisuanji gongcheng · 2006
Some analysis is focused on each code block passing number of EBCOT (embedded block coding with optimized truncation) inJPEG2000. Through experiments on lots of images, a conclusion can be made that each code block truncates at similar code block passing numbers.Hence this paper addresses a truncation algorithm in the equal-coding pass. Furthermore based on the above algorithm, a progressive passing-numbertruncation coding algorithm (PPNTC) is proposed which discards complicated rate-distortion calculation and makes it easy for the design of T2coder. This algorithm speeds up the processing of JPEG2000 and saves the memory cost. It can be realized more easily on hardware system. Thesystem shows the developed scheme meets the high-speed requirement of the real-time coding 250fps.