In view of the degeneracy phenomenon of video image in fog days, this paper uses TMS320DM6467 processor and its pe-ripheral circuits to build a set of embedded processing platform which is applied to rapid defogging in video stream. The rapid defog-ging algorithm based on the YCbCr color space used in this paper has a good defogging effect, and the checking list is used to re-duce the computional complexity. It also uses EDMA technology to improve the data handling capacity. The system speed is im-proved through the cache and ping-pong buffer store technology. The processing 1080P video speed is up to 30 frames per second. This speed meets the real time requirement of high-definition video processing.%针对雾天视频的退化现象使用TMS320DM6467处理器及其外围电路,搭建一套完整的嵌入式处理平台,实现视频流的快速除雾。采用基于YCbCr颜色空间的快速去雾算法,并利用查表法降低算法复杂度,具有较好的去雾效果。该去雾平台利用EDMA技术提高数据搬运能力,通过高速缓存和乒乓缓存技术提高系统处理速度,使得系统处理1080P视频的速度可达到30帧/s,满足处理高清视频的实时要求。
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