Image pickup apparatus and storage medium

Abstract

In order to perform image processing in which relative positional deviation of image outputs between two image pickup units is suppressed, an image pickup apparatus comprises: an imaging device that has a first image pickup unit configured to perform imaging in a first cycle and generate a first image signal, and a second image pickup unit configured to perform imaging in a second cycle shorter than the first image pickup unit and generate a plurality of second image signals; a relation degree information generation unit configured to generate relation degree information between the first image signal and the second image signal based on overlap between an exposure time period in the first image pickup unit and an imaging timing in the cycle of the second image pickup unit; a region selection unit configured to select a specific region from among the second image signals based on the relation degree information generated by the relation degree information generation unit; and an image processing unit configured to perform predetermined image processing on the first image signal based on the specific region selected by the region selection unit.