A Fast Screen Content Coding Method Based on Spatiotemporal Correlation

A technology of screen content coding and space-time correlation, applied in image communication, digital video signal modification, electrical components, etc., can solve the complex and high-level problems of SCC video coding, and achieve the effect of saving coding time, reducing complexity and improving efficiency.
CN107623850BActive Publication Date: 2019-11-22浙江知多多网络科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
浙江知多多网络科技有限公司
Publication Date
2019-11-22

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Abstract

The invention discloses a fast screen content coding method based on time-space correlation. The CU division module based on spatiotemporal correlation of the present invention is to first calculate the absolute frame difference between the CU in the current frame and the CU in the same position in the previous frame, and divide the CU into two types; The correlation on the intra prediction mode determines that the current CU ends the partition early or determines that the current CU only performs PLT mode prediction; the mode selection module based on the spatio-temporal correlation uses the mode correlation between the current CU and its spatio-temporal adjacent CUs to skip specific prediction mode; the CU division module based on coded bits first obtains the threshold of CU coded bits at each depth through the graph of CU hit rate and coded bits, and if the coded bits of the current CU is less than the threshold, the CU division will be terminated in advance . The invention reduces the complexity of CU planning, simplifies the selection process of the intra-frame prediction mode, and improves the SCC coding efficiency.
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Description

technical field

[0001] The invention belongs to the technical field of screen content coding (SCC), in particular to a low-complexity fast SCC intra-frame video coding method. Background technique

[0002] In recent years, with the application of high-definition and ultra-high-definition video (resolution up to 4K×2K, 8K×4K) into people’s field of vision, video compression technology has been greatly challenged. In addition, various video applications are emerging with the development of network and storage technologies. The diversification of video applications and the trend of high-definition put forward higher requirements for video compression performance. To this end, in April 2010, ITU-T's Video Coding Experts Group (VCEG) and ISO / IEC's Moving Picture Experts Group (MPEG) established the Video Coding Joint Development Team (JCT-VC) to jointly formulate a new generation of video coding standards. , completed the High Efficiency Video Coding HEVC (High Efficiency Video...

Claims

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