The method of the present disclosure includes: acquiring a pair of operation control points including an operation start point and an operation end point; calculating a vector from the operation start point to the operation end point; determining an image deforming area, where the image deforming area consists of a contracted sub-area and a stretched sub-area; determining a pixel step value of each pixel in the image deforming area, where a pixel step value of a pixel in the contracted sub-area is greater than a preset step value threshold, and a pixel step value of a pixel in the stretched sub-area is less than the step value threshold; generating an offset parameter relative to the image according to a vector direction of the vector and the pixel step value of the pixel; and performing interpolation calculation on the offset parameter, to obtain a stretched image.