为了获得更加清晰、更高质量的图像, 设计了以高性能DSP芯片TMS320VC6455作为中央处理器, 结合现场可编程门阵列FPGA构成外围电路逻辑控制的嵌入式高速图像增强处理平台, 并提出了一种新的快速自适应图像增强算法。首先将彩色图像从RGB空间转化为HIS空间, 然后对亮度空间进行多尺度Retinex增强处理, 最后进行对比度调节处理并转化到RGB空间进行输出。利用真实图像验证了本文提出的方法, 实验结果表明, 该系统可以有效地提高对比度, 获得了较好的增强效果, 同时计算时间少, 能够满足工程中的需要。

In order to get clearer and more qualitative image, an embedded high speed image enhancement processing system on high performance DSP TMS320C6455 and FPGA was designed, and a new fast color image enhancement algorithm is presented. First, the color image is transformed from RGB to HIS. Then multi-scale retinex algorithm is adopted in the brightness image. Finally the color image is transformed from RGB to HIS. Experimental results with real images show that the system can improve the contrast of the fog-degraded image, effectively enhance the color image and shorten the running time of the program, which can meet the project.