A method includes shooting an nth frame of image at a first angle, where a projection of a distance value of a first pixel point of the nth frame of image to an optical center onto an optical axis direction is a first distance value, and a projection of a distance value of an ith pixel point of the nth frame of image to the optical center onto the optical axis direction is a second distance value, obtaining a third and a fourth distance value, obtaining a correction coefficient of the ith pixel point of the nth frame of image according to the first, the second, the third, and the fourth distance value, and correcting a location of the ith pixel point of the nth frame of image according to the correction coefficient using a location of an ith pixel point of the first frame of image as a reference.