Video encoding method and device based on long-term reference frame

A long-term reference frame and long-term reference technology, which is applied in the field of video encoders, can solve problems such as inapplicability, low efficiency of multi-frame reference, and increased hardware implementation costs, so as to ensure quality, improve compression rate, and improve encoding quality and compression rate. Effect

Active Publication Date: 2017-06-20
ALLWINNER TECH CO LTD
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Problems solved by technology

On the other hand, since the AVC/H.264 standard, multi-frame reference coding has become an effective means to improve the quality of video coding. Multi-frame reference can improve the coding prediction accuracy, but multi-frame reference processing will greatly increase the coding computational complexi

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  • Video encoding method and device based on long-term reference frame

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[0021] The video coding method based on the long-term reference frame of the present invention is applied to the inter-frame prediction part of the P-frame coding in the video coding, and the short-term reference frame and the long-term reference frame are used for fusion coding to improve the video compression rate and coding quality. The video encoding device based on the long-term reference frame of the present invention is used to implement the video encoding method based on the long-term reference frame of the present invention.

[0022] Video coding method embodiment based on long-term reference frame:

[0023] Such as figure 1 As shown, when P frame encoding is performed, step S1 is first performed to obtain short-term reference macroblock data and long-term reference macroblock data corresponding to the currently encoded macroblock. When encoding the coded macroblock of the current frame, it is necessary to obtain the corresponding short-term reference macroblock data in th...

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Abstract

The invention provides a video encoding method and device based on a long-term reference frame. The method comprises a step of obtaining a short term reference macroblock data and long term reference macroblock data corresponding to a current encoding macroblock, a step of using a first interframe prediction mode to obtain the interframe prediction information of a short term reference macroblock, and using a second interframe prediction mode to obtain the interframe prediction information of a long term reference macroblock, a step of carrying out fusion processing on all encoding sub macroblocks of the current encoding marcoblock according to the interframe prediction information of the short term reference macroblock and the interframe prediction information of the long term reference macroblock, and obtaining the interframe prediction information of the current encoding macroblock, and a step of carrying out motion compensation processing on all encoding sub macroblocks of the current encoding macroblock and obtaining the interframe prediction encoding data of the current encoding macroblock. The device provides an execution module for the method. By applying the video encoding method and device, the video compression rate and encoding quality can be improved effectively.

Description

technical field [0001] The present invention relates to the technical field of video encoders, in particular to a video encoding method based on long-term reference frames and a device for applying the method. Background technique [0002] In recent years, as high-definition and ultra-high-definition video applications have gradually entered 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. Today, digital video broadcasting, mobile wireless video, remote monitoring, medical imaging and portable photography have all entered people's lives. The diversification and high-definition trend of video applications put forward higher requirements for video compression performance. Therefore, improving the encoding quality and compression rate of surveillance video puts forward higher requirements for existing video compression technologies....

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Application Information

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IPC IPC(8): H04N19/573H04N19/122H04N19/176H04N19/186H04N19/109
CPCH04N19/109H04N19/122H04N19/176H04N19/186H04N19/573
Inventor 王军李洁珺付涛
Owner ALLWINNER TECH CO LTD
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