An image processing device, method, and program are capable of obtaining processing results which are even more accurate and even more precise as to events in the real world, taking into consideration the real world where data has been acquired. The image processing device may include a setting unit, a real world estimating unit, a pixel value generator, and a difference computer. In another embodiment, the image processing device may include a data continuity detector including a setting unit, a real world estimating unit, a difference computer, and a detector.