Image processing method and processing system based on area exposure control

The invention provides an image processing method and system based on area exposure control, and belongs to the technical field of image processing, image sequences under different exposure degrees are generated based on a to-be-processed image, and then the image sequences under the different exposure degrees are uniformly divided into a plurality of non-overlapped brightness areas based on the brightness value of each pixel, so that the brightness of the to-be-processed image is improved. Screening out fusion exposure and a brightness area under the fusion exposure from the image sequences under different exposure based on a preset image quality index, distributing a fusion weight for the brightness area, and selecting an optimal fusion exposure and brightness area based on the preset image quality index; the method comprises the following steps: acquiring brightness areas, distributing fusion weights for the different brightness areas, performing comprehensive exposure fusion on the brightness areas under