Patent ID: 8072506
Filing Date: 2011-12-06
Classification: H04N

Abstract:
1. A flicker detection method for detecting a flicker from an image signal, the method comprising: using a computing device to perform at least the following: (a) determining a luminance difference between neighboring pixels; (b) summing up the luminance difference in a predetermined direction if the luminance difference is greater than a luminance threshold value to yield a sum, wherein step (b) excludes the luminance difference from a summation if the luminance difference is less than the luminance threshold value; (c) performing a motion estimation by using the sum determined through step (b) to thereby determine a motion displacement; (d) performing a motion compensation to a current frame data by using the motion displacement to yield a compensated current frame data; (e) determining a difference between a previous frame data and the compensated current frame data; and (f) detecting the flicker by using the difference determined in step (e).