Patent ID: 8116572
Filing Date: 2012-02-14
Classification: G06T,H04N

Abstract:
1. A method for detecting an image edge, comprising: reading a first, a second, and a third pixel rows, adjacent to one another in the image, and reading a plurality of pixel values of the respective first, second, and third pixel rows; generating at least one first inclined edge area between the first and the second pixel rows, and generating at least one second inclined edge area between the second and the third pixel rows, wherein the first and the second inclined edge areas are determined by detecting whether a difference of pixel values of corresponding pixel rows exceeds an edge threshold; detecting whether an overlapped portion or a gap within a predetermined number of pixels exists between the first and the second inclined edge areas; and determining an area between the first and the second inclined edge areas is an inclined edge when the overlapped portion or the gap within the predetermined number of pixels exists between the first and the second inclined edge areas.