一种高压缩比的图像采集压缩系统设计
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摘要
设计了一种以FPGA为控制核心的图像采集压缩系统,采用多接口完成多制式图像的实时采集和处理,通过FPGA完成图像采集和系统逻辑时序控制,DSP完成压缩算法的控制,实现JPEG2000格式的图像压缩,极大地提高了压缩速度和压缩比。最终实现了26倍的压缩率,并且在高压缩比的情况下图像失真率低。通过大量试验证明,该系统稳定、可靠,满足设计要求。
An image acquisition and compression system based on FPGA was designed. It used multi-interface to complete multi-format real-time image acquisition and processing. FPGA accomplished image acquisition and system logic timing control,DSP controlled compressing algorithm. Thereby it realized JPEG2000 format image compression,greatly improved the compression speed and compression ratio. Finally the system implement compression ratio of 26 times,and in the case of high compression ratio the image distortion rate is low. A lot of tests proved that the system is stable and reliable,and meets the designed requirements.
An image acquisition and compression system based on FPGA was designed. It used multi-interface to complete multi-format real-time image acquisition and processing. FPGA accomplished image acquisition and system logic timing control,DSP controlled compressing algorithm. Thereby it realized JPEG2000 format image compression,greatly improved the compression speed and compression ratio. Finally the system implement compression ratio of 26 times,and in the case of high compression ratio the image distortion rate is low. A lot of tests proved that the system is stable and reliable,and meets the designed requirements.
引文
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[2]高利聪,菅少坤,梁庭.一种新型图像压缩系统的设计[J].电子技术应用,2014,40(11):43-46.
[3]张敏海,吴新开,张婷婷.基于JPEG压缩编码算法的数字图像处理系统[J].计算机系统应用,2012,21(10):135-138.
[4]白军科.基于Camera Link接口的成像电路设计[D].中国科学院研究生院(西安光学精密机械研究所),2012,5:45-48.
[5]朱元元,刘成国,徐刚.基于FPGA的实时静态图像压缩系统设计[J].微处理机,2014,332(3),79-82.
[6]连猛,丑修建,李庆,等.基于FPGA和DSP的数据采集与压缩系统[J].电子器件,2015,38(1):130-134.
[7]熊哲源,樊晓平,刘少强,等.一种适用于无线多媒体传感器网络的JPEG图像编码算法[J].传感技术学报,2011,24(10):1489-1495.
[8]Texas Instruments Incorporated.TMS320C6000 DSP EDMA Controller Reference Guide[S].Literature Number:SPRU629F June 2007.
[9]郭炜,邵诗逸.DSP通过外部FLASH实现自引导启动[J].微处理机,2007,2(1):24-26.
[10]叶勇,沈三民,郭铮,等.基于PCI总线的高速通信卡的设计[J].电视技术,2013,37(3):82-85.