METHOD AND APPARATUS FOR NOISE REDUCTION

摘要

PURPOSE: A method for removing thermal noise of a video and an apparatus for the same are provided to remove the thermal noise generated in an image sensor when taking the video. CONSTITUTION: Noise is removed in a difference between a current frame and a previous frame in which temporal noise is reduced (S210). Motion information of the current frame is detected based on the difference in which noise is removed, and the temporal noise of the current frame is removed according to the motion information (S240). [Reference numerals] (AA) Current frame; (BB) Previous frame; (CC) Frame with its temporal noises removed; (S220) Calculate an average SAD value within W; (S230) Subtract an offset value from the average SAD value; (S250) Calculate a first motion detection coefficient; (S260) Calculate a second motion detection coefficient; (S270) Calculate a third motion detection coefficient; (S280) Remove temporal noises