Patent ID: 8564614

Claim:
A display control apparatus comprising: an input unit that inputs a piece of image data; an acquisition control unit that controls the input unit to consecutively acquire a plurality of pieces of image data; a memory control unit that successively stores in a memory unit the plurality of pieces of image data consecutively acquired by the acquisition control unit; a first image compositor that composites a latest stored image data from among the plurality of pieces of image data stored by the memory control unit, and at least one other of the plurality of pieces of image data; a display control unit that causes a display unit to display an image based on a composited image data composited by the first image compositor; a position acquisition unit that acquires positions of subject image regions in images represented by the plurality of pieces of image data; a comparison unit that compares the positions of the subject image regions acquired by the position acquisition unit; and a motion detector that determines, based on a result of the comparison by the comparison unit, whether a movement amount of the positions of the subject image regions is greater than/equal to a predetermined amount; wherein the first image compositor composites a plurality of pieces of image data for which the motion detector determines the movement amount of the positions of the subject image regions to be greater than/equal to the predetermined amount; and wherein the display control apparatus further comprises: an overlap determination unit that compares the plurality of pieces of image data and determines whether an extent of a degree of overlap of the subject image regions is at least a predetermined amount; a reduced image data generator that generates a piece of/pieces of reduced image data by reducing a display size of a piece of/pieces of image data other than the latest stored image data when the extent of the degree of overlap of the subject image regions is determined to be greater than/equal to the predetermined amount by the overlap determination unit; and a second image compositor that composites the piece of/pieces of reduced image data generated by the reduced image data generator and the latest stored image data; wherein the display control unit causes the display unit to display an image represented by an image data composited by the second image compositor instead of an image represented by the image data composited by the first image compositor when the extent of the degree of overlap of the subject image regions is determined to be greater than/equal to the predetermined amount by the overlap determination unit.