MOTION-COMPENSATED TEMPORAL FILTERING BASED ON VARIABLE FILTER PARAMETERS

摘要

Systems and devices for, and methods of, motion-compensated temporal filtering based on variable filter parameters. A method embodiment includes (a) determining, by a processor having memory, a pixel-related residue image based on a set of differences between a current pixel intensity of a current frame and a corresponding pixel intensity of a previous frame, wherein the corresponding pixel intensity is augmented by a motion-compensated vector of the previous frame; (b) determining an intensity weight based on the determined pixel-related residue image and a temporal filtering parameter; and (c) filtering the pixel intensity of the current frame based on the determined intensity weight and the motion compensated vector of the previous frame.

主权项

1. A method comprising:
determining, by a processor having memory, a pixel-related residue image based on a set of differences between a current pixel intensity of a current frame and a corresponding pixel intensity of a previous frame; determining an intensity weight based on the determined pixel-related residue image and a filtering parameter, wherein the filtering parameter provides, via minimizing a mean-square difference error, a de-noising effect based on noise level; filtering the pixel intensity of the current frame based on the determined intensity weight, the pixel intensity of the previous frame, and a standard deviation parameter; and determining a filtered pixel intensity vector based on the filtered pixel intensity of the current frame.