Patent ID: 9100660
Filing Date: 2015-08-04
Classification: H04N

Abstract:
1. A method comprising: receiving a first image of a first spatial resolution and a guide image of a second spatial resolution, wherein both the first image and the guide image represent similar scenes and the second spatial resolution is higher than the first spatial resolution, wherein the first image comprises a first color component and a second color component; selecting an up-scaling filter to up-scale the first image to a third image with a spatial resolution equal to the second spatial resolution; computing filtering coefficients for the up-scaling filter wherein the filtering coefficient computation is based, at least in part, on minimizing an error measurement between pixel values of the guide image and the third image, wherein the up-scaling filter comprises a first set of filtering coefficients and a second set of filtering coefficients, wherein generating the third image comprises combining the result of filtering the first color component of the first image with the first set of filtering coefficients with the result of filtering the second color component of the first image with the second set of filtering coefficients; and transmitting the filtering coefficients to a decoder.