To provide a simply-constructed image processing device, capable of producing a portrait without requiring installation of background screen opposed to the case of conventional photographing apparatus which require arrangement of the background screen for forming portraits.

In this image processing device, its image processing method and a storage medium therefor, a CPU 11 takes in background image data photographed by means of a CCD camera 16 with a prescribed timing for accumulating them, and according to image processing based on image data photographed by an instruction from a user and the background image data, image data of the portrait are formed.