Patent ID: 8107012
Filing Date: 2012-01-31
Classification: H04N

Abstract:
1. An image processing apparatus which generates a corrected image signal that shows corrected contours of an image, by correcting contours of an image represented by an image signal, said apparatus comprising: a signal obtainment unit operable to obtain the image signal; and a correction unit operable to generate the corrected image signal in such a way that there is an intersection with waveforms, and that there are two regions with different areas bordered by the waveforms which overlap at the intersection point, the waveforms expressing changes in each value in image spaces displayed by the image signal and the corrected image signal respectively, when a waveform which expresses changes in the differential values of the image signal relative to the image spaces is symmetrical in a contour region of the image shown by the image signal, wherein said correction unit includes: a shift amount calculation unit operable to calculate a shift amount for shifting the waveform in the contour region of the image signal; a steepening amount calculation unit operable to calculate a steepening amount for steepening the waveform in the contour region of the image signal; an integration unit operable to calculate a correction amount for correcting the image signal of the contour region by integrating the shift amount and the steepening amount calculated by said shift amount calculation unit and said steepening amount calculation unit; and a generation unit operable to generate the corrected image signal by correcting the image signal in the contour region by the correction amount calculated by said integration unit.