Patent ID: 8395671

Claim:
An imaging device, comprising: an imaging unit operable to capture an image of an object; a sensing unit operable to sense physical motion of the imaging unit; an extraction unit operable to extract a feature point from a first frame image; a prediction unit operable to predict, according to the sensed physical motion, a position in which the feature point extracted from the first frame image is to appear in a second frame image that follows the first frame image after a fixed number of frames; a setting unit operable to set a window in the second frame image according to the position predicted by the prediction unit; a search unit operable to search in the set window of the second frame image for a feature point corresponding to the feature point extracted from the first frame image; and a frame rate change unit operable to change the frame rate of the imaging unit to a higher value when the amount of the physical motion sensed by the sensing unit is greater than or equal to a predetermined threshold, wherein the setting unit is further operable to change a size of the set window in proportion to the amount of the physical motion sensed by the sensing unit.