Video weighted prediction system and coding and decoding method thereof

Abstract

The invention relates to a video weighted prediction system and a coding and decoding method thereof based on the H.264 standard and the AVS standard in the technical field of image processing, comprising an arithmetic module, a control module, a parameter storage module and a lookup table, wherein, the arithmetic module is connected with the control module so as to transmit a weighted prediction parameter, the control module is respectively connected with the arithmetic module, the parameter storage module and the lookup table so as to transmit the weighted prediction parameter and a control instruction, and the arithmetic module receives a weighted prediction request and outputs a weighted prediction result. The invention uses a set of weighted prediction arithmetic circuit, and input data for forward weighted prediction and rearward weighted prediction does not need to be generated simultaneously, thereby meeting the requirement on speed, saving hardware resources and efficiently accomplishing the H.264 standard and the AVS standard weighted prediction.

Description

technical field [0001] The present invention relates to a system in the technical field of image processing and a processing method thereof, in particular to a video weighted prediction system and an encoding and decoding method based on the H.264 standard and the AVS standard. Background technique [0002] The H.264 standard is a highly compressed digital video codec standard proposed by the Joint Video Team (JVT, Joint Video Team) jointly composed of the ITU-T Video Coding Experts Group (VCEG) and the ISO / IEC Motion Picture Experts Group (MPEG). . The biggest advantage of the H.264 standard is that it has a high data compression ratio. Under the condition of the same image quality, the compression ratio of the H.264 standard is more than 2 times that of MPEG-2 and 1.5 to 2 times that of MPEG-4. What's more worth mentioning is that the H.264 standard has high-quality and smooth images while having a high compression ratio. Due to its good performance, it has been widely s...

AI Technical Summary

Problems solved by technology

However, in order to carry out two-way weighted prediction, this structure uses two sets of weighted prediction hardware resources at the same time, which greatly increases the circuit area.

Moreover, if only forward prediction or backward prediction is required, the utilization efficiency of the circuit is only about 50%.

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