Intellectual Property India Publishes Patent Application for Weighted Filtering For Picture Enhancement In Video Coding

MUMBAI, India, June 19 -- Intellectual Property India has published a patent application (202617057634 A) filed by Guangdong Oppo Mobile Telecommunications Corp. on May 06, 2026, for Weighted Filtering For Picture Enhancement In Video Coding.

Inventors include Classen, Tim; and Wien, Mathias.

The application for the patent was published on June 05, 2026, under issue no. 23/2026.

Abstract: A method of processing video data, performed by an encoder, is provided. The method comprises obtaining a plurality of original pictures from original video data; obtaining a plurality reference pictures, each corresponding to an original picture from the original video data, wherein the plurality of reference pictures are at lower resolutions than the original pictures from the original video data; upsampling the plurality of reference pictures to obtain a plurality of upsampled reference pictures; obtaining a weighted filter to reduce an overall error between the plurality of upsampled reference pictures and the corresponding original pictures, by: determining a weighting map for each reference picture using a weighting map function, the weighting map comprising a plurality of weights mapped to respective spatial locations of the upsampled reference pictures, wherein the upsampled reference pictures are used as an input to the weighing map function, and determining a filter to be applied to the upsampled reference pictures with respective the weighting maps to obtain filtered upsampled reference pictures, such that the filter is applied with different weights to different spatial locations of the upsampled reference pictures; performing inter prediction of a plurality of blocks of a first picture based on a plurality of reference blocks from one or more of the upsampled reference pictures; and encoding the video data coding information into a bitstream, the coding information comprising information on the weighting map function and/or filter to be used at a decoder, wherein the method further comprises: applying the weighted filter to the plurality of upsampled reference pictures prior to performing the inter prediction, or applying the weighted filter to upsampled referenced blocks of the reference pictures during the inter prediction.

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