When the light is strong, the automatic shutter system selects a lower shutter time and a smaller aperture, but when the UAV takes a large number of photos, the automatic shutter time causes the object's brightness to be inconsistent, which makes photo stitching difficult.
So I wondered if it would be possible to calculate a constant based on the aperture and shutter time of the camera, multiply the constant by the photo, and make all objects appear the same brightness?
ExifTool calculates the LightValue for an image as a Composite tag (https://exiftool.org/TagNames/Composite.html). LightValue accounts for changing shutter speed, aperture and ISO. Presumably you could use some image editor like ImageMagick to normalize these values for a series of images by multiplying the image data by the appropriate constant.
- Phil