The Improvement And Realization Of Roket-borne Image Coding Based On DM642

With unceasing progress of information technology, image coding technology also obtained the rapid development. Specially, image compression coding already got the widespread application in astronautics in the past decades. Because the image can supply richer and direct-viewing information, it is already used as an important remote-sensing parameter to be used in the process of developing missile and rocket. Image coding technology based on aviation almost is applied on special satellite, so the research of image collection and coding technology aimed at missile/rocket has an important meaning.This research's job is to select an algorithm to satisfy missile/rocket test system and realize it based on hardware platform. According to image coding characters of aerospace test, this paper's algorithms are fixed in two still image compression standard: JPEG and JPEG2000. By contrast of two algorithms'performance, ultimately our paper chooses JPEG2000 as our priority research object; and also we improve and optimize to the block coding part whose algorithm complexity is highest; at last it suggests a image coding algorithm which is fit to an embedded operating system, and it realizes algorithm's system transplantation which is based on DM642 hardware platform.