Because the difference of the camera and light intensity, it will cause the uneven brightness within the image and between this image and another image, stitched image will appear bright and dark alternately, this caused great inconvenience to the users.

The usual processing way of brightness and color balance is to correct a picture of the internal light unevenness through the camera light model, and then through the relationship of overlap region between the two adjacent images to establish histogram mapping table of two adjacent images, then through the mapping table on the two images to do the overall mapping transformation, and finally to achieve the overall brightness and color consistency.