Local brightness compensation method and device and computer readable storage medium

Abstract

The invention provides a local brightness compensation method and device and a computer readable storage medium, and belongs to the technical field of digital signal processing. The method applied to a coding device comprises the steps: obtaining a first pixel point set corresponding to a current coding block from a current frame under the condition that brightness compensation needs to be carried out on the current frame, and obtaining a second pixel point set corresponding to the reference block from the target reference frame, wherein the number of pixel points included in the first pixel point set is the same as that of pixel points included in the second pixel point set; according to the number of the pixel points and a preset rule, determining a first target pixel point set from the first pixel point set, and determining a second target pixel point set from the second pixel point set; calculating a brightness compensation parameter according to the first target pixel point set and the second target pixel point set; and performing brightness compensation on the current coding block according to the brightness compensation parameter. According to the invention, the local brightness difference can be effectively compensated, and the code rate overhead can be reduced.

Description

Technical field [0001] Embodiments of the present invention relate to the field of digital signal processing, and more particularly to a partial brightness compensation method, device, and computer readable storage medium. Background technique [0002] In video codec, many videos often have such a class: Since shooting or human additive in natural environments, the content between frames is similar but video brightness is changed. Therefore, in order to improve the efficiency of the inter-frame encoding, we need to be loaded with the brightness difference between the video frame and the frame during the inter-frame encoding process, i.e., brightness compensation, or light compensation. However, the current brightness compensation method is unfrounded for local brightness changes, and there is a need to deliver a lot of parameters related to brightness compensation in the code stream, and the code rate overhead is large. Inventive content [0003] The embodiment of the present in...

AI Technical Summary

Problems solved by technology

However, the current brightness compensation method is not friendly to local brightness changes, and needs to transmit a lot of parameters related to brightness compensation in the code stream, and the code rate overhead is large.

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