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Video conversion process method based on transform of time resolution

A temporal resolution, video conversion technology, applied in the field of computing, can solve the problem of lack of representation of motion vectors, and achieve the effect of ensuring scalability and interactivity, reducing impact, and improving encoding speed.

Inactive Publication Date: 2007-12-26
ZTE CORP
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Problems solved by technology

[0008] The purpose of the present invention is to provide a video conversion processing method based on temporal resolution transformation, to solve the problem that the motion vectors selected in the FDVS algorithm in the prior art are not representative when the coverage area is close, and to obtain better reconstructed video Image Quality

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  • Video conversion process method based on transform of time resolution
  • Video conversion process method based on transform of time resolution
  • Video conversion process method based on transform of time resolution

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Embodiment Construction

[0063] Below according to accompanying drawing and embodiment the present invention will be described in further detail:

[0064] In the international video coding standard, inter-frame predictive coding can adopt frame prediction and field prediction, so the number of motion vectors for each macroblock of a forward predictive frame may be one or two. If the macroblock coded in the input coded video stream using the inter-frame coding method adopts the frame prediction method before the temporal resolution conversion coding, then the obtained motion vector is the motion vector of the macroblock. If field prediction is used, each macroblock is divided into 16*8 parity and even blocks, then the motion vector of the macroblock is the motion vector corresponding to the 16*8 block with a large sum of DC coefficients after DCT transformation. The reason is that the block matching method establishes the assumption that all pixels in the macroblock are in a translational state and hav...

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Abstract

The method comprises: a) in a time-based resolution switch process using a main control vector selection method; detecting the coverage state of the abandoned frame covered by the macro block encoded with the inter-frame encode approach in the encoded video stream to the switched; b) when the encoded macro blocks covered by matched macro block at the corresponding location in reference frame are two or four, and sizes of all encoded macro blocks are closed to and all encoded macro blocks use the inter-frame encode approach, according to the DCT coefficient correlated to said macro blocks, determining the matching location of current encoded macro block at previous reference frame; based on that, getting the motion vector of current encoded macro block.

Description

technical field [0001] The invention relates to computing, in particular to a video conversion processing method based on time resolution transformation. Background technique [0002] Video conversion coding can be understood as the conversion from one video compression format to another video compression format. The format mentioned here includes the syntax of the code stream and related parameters in the code stream, such as the encoding bit rate and the spatial resolution of the video image. , time resolution, adaptability to network bandwidth, etc., its essence is to adapt to different bandwidth conditions of the transmission network or according to the decoding ability of the client, convert a video stream in one compressed format to the same or another compressed format. video stream. [0003] Scalable Video Coding is another coding method that compresses video in multiple layers and transmits the appropriate layers according to the change of network bandwidth. It co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24G06T9/00
Inventor 鲁照华
Owner ZTE CORP
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