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CCD image contains a large amount of information , more rich content , the role of the military , aerospace , astronomy , and other fields , it is self-evident , but the vast amounts of data transfer the burden became high-resolution CCD aerial camera widely used bottlenecks , thus Research and efficient image compression system became a necessity. The JPEG standard is mature image compression technology , its high compression ratio , distortion is small , run fast , easy to implement , applicable to a wide range of more than a decade as an international standard , has been a wide range of applications and support . Compression running on a platform core TI ( Texas Instruments ) Model TMS320DM6446 DSP processor . DaVinci technology hardware products TMS320DM6446 ARM embedded processor core and C64x digital signal processor cores in a chip package integration , system integration , and reduces the cost of system board level , the collaborative operational efficiency of the dual-processor also has a great improved. In -depth study of the latest TI's DaVinci technology , the characteristics of dual-core processors , the design of an image compression system . The research covers the DaVinci technology hardware system architecture , software architecture , and Linux application development . Hardware system mainly involves chip selection , DDR2 Dynamic Memory Interface Design , Flash memory interface design , ATA hard disk interface , Ethernet interface design , USB interface design , UART interface design and system power supply design , this article also on the system 's various components part of the functions and features are introduced in detail . The full application TMS320DM6446 the processing advantages , fast processing , lower-cost board-level features. The development of embedded software systems first host -side cross-compiler environment for DM6446 ARM side . Then DM6446 boot mechanism design suitable Bootloader code and kernel . Finally, the JPEG image compression algorithm implemented on this operating system platform .
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