Aiming at the problem that brackets occlude the bottom image of a 720° panoramic camera, a method for eliminating the occlusion of the bottom bracket based on step-by-step shooting is proposed. The bottom occlusion is eliminated by shooting the side and top once and shooting twice on the bottom. On this basis, the inconsistency of image brightness are optimized on the side, top, and bottom. The global uniformity algorithm can cause images in different regions to influence each other, causing deviations in the uniformity results.Therefore, a Wallis uniform color algorithm based on region growing method is proposed for image segmentation.The experimental results show that the method in this paper can eliminate the bottom image occlusion. Using the algorithm in this paper to even color, the image color difference is reduced by 59.3% compared with the global algorithm.