Embedded Development Of JPEG2000 Image Compressing System On FPGA

With the development of the multi-medium and networks technology, people has put forward the higher requirement at quality dimension and application in digital image, wanting to use limited space and bandwidth resources to transmit a big image and according to the real needs to gain the reconfiguration image of different resolution or qualities. This will be begged that the image compression technology not only have good compression efficiency but also can handle nimbly the compression code rate. At present, the JPEG still image compressing standard has a good compressing effect on middle and high code rate. But there exists a serious diamond effect at low code rate. The JPEG standard can not fulfill the need of network transmission. In order to solve the mentioned above issue, the international standard organization (ISO) and the International Telecommunications Union (ITU) laid down the new generation stationary picture compression standard——JPEG2000. Compared with former JPEG standard, JPEG2000 provides a set of features, such as superior low bit-rate performance, excellent compound image performance, progressive transmission by pixel accuracy and resolution, Region of Interests coding, robustness of bit errors and so on. Because of these features, JPEG2000 standard has become major standard of still image compression.FPGA (Field Programmable Gate Array) is on the basis of development of PAL, GAL, EPLD. In the ASIC field, FPGA not only solve the shortage of custom circuit, and also overcome the shortcomings of former programmable device's circuit limits. FPGA also has flexible usage. In the field of communication, data-processing, Internet, industrial control, FPGA has been widely used.With the development of hardware performance of programmable device, people more and more hope to use embedded development method to combine applications in hardware device in software module mode. It can greatly reduce the hardware development spending by doing this. Based on this idea, we will implement the JPEG2000 Image Compression System on FPGA platform using the C programming language.