1. An image processing device, comprising: a first image acquirer configured to a acquiring a first image of a first spatial resolution; a second image acquirer configured to acquire a second image of a second spatial resolution, wherein the second spatial resolution is higher than the first spatial resolution; a determiner configured to determine in the first image a location of a part of the first image that corresponds to a pre-determined part of the second image based on a pre-determined similarity criterion; and a copying circuit configured to copy the pre-determined part of the second image to a location in an output image based on the determined location.