MUMBAI, India, June 27 -- Intellectual Property India has published a patent application (202517053866 A) filed by Tencent America Llc, Palo Alto, U.S.A., on June 3, for 'explicit signaling for block based adaptive weighting factors.'

Inventor(s) include Zhao, Liang; Gao, Han; Zhao, Xin; Ye, Jing; and Liu, Shan.

The application for the patent was published on June 27, under issue no. 26/2025.

According to the abstract released by the Intellectual Property India: "This disclosure relates generally to video coding/ decoding and particularly for enhancing block adaptive weighted prediction. One method includes receiving a video bitstream comprising a current block and a reference block, the reference block being used for predicting the current block and being identified by a motion vector associated with the current block; receiving, from the video bitstream, a syntax element indicating a scale factor (a); determining the scale factor (a) based on a value of the syntax element; predicting the current block using an equation p'(x') = a*p(x) +, where: p'(x') is a predicted sample in the current block, p(x) is a collocated reference sample in the reference block corresponding to p'(x'), a is the determined scale factor based on the value of the syntax element, and is an offset; and reconstructing the current block based on the predicted current block."

The patent application was internationally filed on Sept. 12, 2023, under International application No.PCT/US2023/073916.

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