Optimization method and device of empty image library, electronic equipment and storage medium

The embodiment of the invention provides an optimization method and device of an air-captured image library, electronic equipment and a storage medium, and the optimization method of the air-captured image library comprises the steps: determining a first air-captured image and a plurality of second air-captured images from the air-captured image library which comprises the plurality of air-captured images, the empty image is an image acquired by the fingerprint sensor when no detection object exists in the detection area; difference calculation is carried out on the first empty acquisition image and the plurality of second empty acquisition images, and a plurality of residual images are obtained according to a calculation result; and when determining that shading interference exists in the first empty image according to the plurality of residual images, deleting the first empty image from the empty image library. According to the optimization method of the empty acquisition image library provided by the inven