Patent ID: 8237827
Filing Date: 2012-08-07
Classification: H04N

Abstract:
1. A digital photographing apparatus comprising: an imaging device comprising an effective area that generates first image data from incident light and an optical black area that is disposed outside the effective area and extends horizontally; a first smear correction unit that corrects the first image data generated by the effective area by using smear data generated by the optical black area, and thereby acquires second image data corresponding to a second frame image comprising less smear than a first frame image corresponding to the first image data; a motion vector acquiring unit that acquires a location relationship between a subject within the second frame image and a subject within a previous frame image for the second frame image; a vertical mean acquiring unit that acquires a pixel brightness mean for each column of the second frame image and a pixel brightness mean for each column of the previous frame image; a miscorrected column identifying unit that identifies columns smear-miscorrected by the first smear correction unit from among columns of the second frame image by comparing the pixel brightness mean for each column of the second frame image and the pixel brightness mean for each column of the previous frame image acquired by the vertical mean acquiring unit, taking into consideration the location relationship acquired by the motion vector acquiring unit; and a second smear correction unit that corrects the second image data by using data corresponding to columns of the previous frame image that correspond to the smear-miscorrected columns identified by the miscorrected column identifying unit, thereby acquiring third image data.