According to an embodiment, an image processing device includes a first calculator to calculate, when a photographic subject image is determined to satisfy a first condition, a first position of the clothing image such that the position of a feature area matches with the position of the feature area; a second calculator to calculate a second position of the clothing image in the photographic subject image such that the position of a feature point in the clothing image matches with the position of the feature point in the photographic subject image; a deciding unit to decide, when the photographic subject image is determined to satisfy the first condition, on the first position as a superimposition position, and decide, when the photographic subject image is determined not to satisfy the first condition, on the superimposition position based on the difference between the first position and the second position.