Patent ID: 8050455

Claim:
A photographing apparatus comprising: a processor; a target extractor which extracts target information about a target in a present frame based on information regarding a difference between a first pixel value of a first pixel of the present frame and each of respective first pixel values of a plurality of target pixels, constituting the target in a previous frame, in an area adjacent to the first pixel of the present frame; and a tracking controller which controls automatic tracking of the target based on the target information, wherein the target extractor comprises a target-difference image generator which generates a target-difference image by modifying a second pixel value of the first pixel of the present frame to a value corresponding to a difference between the first pixel value of the first pixel and a first pixel value, among the respective first pixel values of the plurality of target pixels, which is the most similar to the first pixel value of the first pixel of the present frame, and wherein the target extractor extracts the target information in the present frame based on the target-difference image.