Exposure control method and exposure control device based on structured light

The invention provides an exposure control method and an exposure control device based on structured light. The exposure control method includes the steps of projecting a structured light having a plurality of scanning patterns on an object with a first projector brightness to scan the object, capturing a plurality of first images of the object corresponding to the scanning patterns; calculating afirst three-dimensional image according to the first images; projecting a structured light with a plurality of scanning patterns to the object with a second projector brightness to scan the object, capturing a plurality of second images of the object corresponding to the scanning patterns, wherein the second projector brightness is smaller than the first projector brightness; calculating a secondthree-dimensional image according to the second images; and combining the first three-dimensional image and the second three-dimensional image to obtain a first complete three-dimensional image. According to the exposure cont