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Video encoding method of embedding intraframe coding block

An intra-frame coding and video coding technology, which is applied in the fields of digital video signal modification, television, closed-circuit television systems, etc., and can solve the problems of large code stream and network congestion.

Active Publication Date: 2008-07-30
华雁智能科技(集团)股份有限公司
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Problems solved by technology

[0007] The present invention mainly solves the problem of network congestion caused by the large coded stream generated by the traditional I-frame coding method inserted into fixed frame intervals and the short-term sharp increase in the coded stream. Therefore, the present invention provides a A video coding method in which intra-frame coding is mandatory in a given area of ​​the interval, and the prediction mode that refers to the mandatory intra-frame coding macroblock information is preferentially selected as the best prediction mode in the subsequent macroblock coding mode selection

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  • Video encoding method of embedding intraframe coding block
  • Video encoding method of embedding intraframe coding block
  • Video encoding method of embedding intraframe coding block

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Embodiment Construction

[0022] The video coding method embedded in the intra-frame coding block proposed by the present invention is described in detail in conjunction with the accompanying drawings as follows: the process of the video coding method embedded in the intra-frame coding block of the present invention is shown in Figure 1, Figure 2, Figure 3, and Figure 4, which is A video that embeds mandatory intra-coded blocks into P-frame images every fixed frame interval, and selects the prediction mode that only refers to the pixel information of the forced intra-coded blocks as the best prediction mode in the subsequent macroblock coding mode selection Encoding method that reduces bit overhead.

[0023] The overall flow of the video encoding method of the present invention is as shown in Figure 1, and the specific implementation steps are as follows:

[0024] 1) At the beginning, set the frame interval of mandatory intra-frame coding for a given area as m, input a frame of image, and start coding....

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Abstract

The invention discloses a video coding method for coding blocks inside the embedded frame; in every fixed frame interval, the invention can perform forcible frame internal coding in a specified region for a preceding estimated frame (P frame); the macro block reconstructed in predication for coding blocks in reference of the forcible frame can be deemed as a preferential reference block; if the reference block pixels in the macro block coding are inside the coding block or preferential reference block in the frame, the reconstructed macro block is still a preferential reference block. The preferential reference block can be reconstructed from the coding block frame inside the embedded frame. The invention is applicable to video monitoring and video conferences and able to increase I frame interval on the premise of guaranteeing random access points; therefore, the invention can lower bit spending.

Description

technical field [0001] The invention belongs to the technical field of digital video compression coding and decoding, and more specifically relates to a video coding method for reducing bit rate by using embedded intra-frame coding blocks. Background technique [0002] Due to the large amount of information and the high bandwidth requirements of the transmission network, the video signal brings great inconvenience to both transmission and storage. Therefore, compression coding is often required in practical applications. [0003] Traditional video coding standards such as H.261, H.263, H.264, MPEG-1, MPEG-2, MPEG-4, etc. are based on the hybrid coding framework. The hybrid coding framework is a method that comprehensively utilizes prediction, transformation and entropy coding. Traditional encoding standards include intra-frame coding frames, namely I frames, and inter-frame coding frames, namely P frames and B frames. The main encoding process of the I frame is as follows:...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/50H04N7/18H04N7/15H04N19/103H04N19/593H04N19/61
Inventor 唐慧明楼洛阳鲍庆洁杨名艾丹
Owner 华雁智能科技(集团)股份有限公司
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