An image processing device includes: first imaging means for bonding partial images of an object with a predetermined duplicate area so as to generate an entire or partial object image of the object of a predetermined size and imaging the object with a first magnification so as to obtain first image information; second imaging means for imaging the object with a second magnification higher than the first magnification so as to obtain a partial image; image model generation means for generating a model of the object image generated by bonding the partial images from the size of the object image and the duplicate ratio as a ratio of the duplicate area in the partial image; imaging position calculation means for searching the arrangement position of the object image generated from the partial image in the first image information by using a model; and highly accurate image generation means for generating the object image by bonding the partial images according to the arrangement position.