Abstract: In order to solve the problem of ghost phenomenon in the fused image caused by the local movement of the target object in the process of multi exposure image shooting, a color direction gradient histogram feature that is robust to brightness changes was proposed, and a multi exposure image fusion algorithm based on improved feature optical flow estimation was constructed by combining the image grayscale information, structural information, and color information. The experimental results show that compared with the existing algorithms, the high dynamic range image evaluation index pu_psnr has increased by 7.5 dB, log_psnr is increased by 7.5 dB, pu_ssim index is increased by 5%.