This paper first analyzes several image defogging algorithms commonly used, and then selects the adaptive histogram equalization enhancement algorithm characterized by the simple calculation and easy realization through the hardware language according to the actual application requirement. On this basis, the algorithm is further improved. The comparison results show that the improved algorithm is more remarkable in improving the fog image enhancement effect.%本文首先对目前几种常用图像去雾算法进行分析；然后根据实际应用需求,选取了计算简单且易于用硬件语言实现的自适应直方图均衡化增强算法,并在此基础上对算法进行改进,通过对比发现改进后的算法对有雾图像增强效果更为显著.
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