Patent ID: 8189068
Filing Date: 2012-05-29
Classification: H04N

Abstract:
1. An apparatus for detecting flicker noise, comprising: an output unit for outputting a standard data for flicker noise judgment using a statistical calculation value for each line where the statistical calculation values are calculated based on brightness information of pixels for each line of an object image, and which include a first output unit for outputting a first data for each line of the object image, where the first data is a statistical calculation value of brightness information of pixels corresponding to one line in the object image, and a filtering unit for low-pass filtering the first data for each line; a flicker line detection unit for detecting flicker lines by identifying lines corresponding to the standard data where the distance between the lines are within a predetermined allowance of a regular interval; and a judgment unit for comparing the number of the detected flicker lines with a standard number for flicker noise judgment to judge if the object image is a flicker noise image, wherein the filtering unit performs a low-pass filtering only for each of the first data corresponding to lines of a predetermined number from among lines forming the object image, wherein the standard number corresponds to 60% or more of a value obtained by dividing a height of the object image by a size of an interval between flicker lines.