Patent ID: 9202263
Filing Date: 2015-12-01
Classification: G06K,G06T,H04N

Abstract:
1. A method for improving quality of low light video images, the method comprising: receiving a current video frame; generating a reference video frame from the received current video frame, the reference frame including smooth image regions and non-smooth image regions; computing a likelihood metric to determine the likelihood of a pixel to correspond to smooth image regions and non-smooth image regions in the received current video frame by comparing the generated reference frame and the received current video frame; computing a weight matrix from the received current video frame and the generated reference frame to minimize edge blur in non-smooth image regions, wherein the weight matrix includes higher weight factors for the smooth image regions and lower weight factors for the non-smooth image regions, in the received current video frame; and calculating a spatial video frame by applying the weight matrix with higher and lower weight factors to the received current video frame and the generated reference frame.