Multi-view video coding method

A technology of multi-view video and coding method, which is applied in the fields of digital video signal modification, television, electrical components, etc., can solve the problems of unfavorable practical application of multi-view video technology and high computational complexity, and achieves reduction of computational complexity and coding time. Effect

Inactive Publication Date: 2009-10-14
BEIHANG UNIV
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Problems solved by technology

The existing multi-view video coding technology needs to traverse all the above modes during coding, and its computational complexity is quite high, which is not conducive to the practical application of multi-view video technology

Method used

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Embodiment

[0060] Three sets of standard multi-viewpoint video sequences of "Ballroom", "Exit" and "Race1" with 8 viewpoints were selected, encoded by the multi-viewpoint video coding method of the present invention, and compared with the coding method of traversing all modes.

[0061] Figure 6 , Figure 7 , Figure 8 The multi-viewpoint video sequences are "Ballroom", "Exit" and "Race1" in sequence, and there are three different viewpoint images in each picture, the image size is 640×480, YUV (4:2:0) format, each The distance between viewpoints is 20cm, the frame rate of "Ballroom" and "Exit" is 25 frames per second, and the frame rate of "Race1" is 30 frames per second. Among them, the motion information of the "Ballroom" sequence is more complex, the "Exit" sequence has more static background information, and the "Race1" sequence has movement in the collected camera group compared with the first two sequences.

[0062] Figure 9 , Figure 10 , Figure 11 For different bit rates...

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Abstract

The invention discloses a multi-view video coding method, comprising the following steps of: firstly determining that whether a motion estimation mode or a parallax estimation mode is firstly carried out according to reference frame information of coded adjacent blocks, then traversing an intra-frame mode, a Skip mode and seven modes of motion estimation or parallax estimation to a current macro block, calculating RD expenditure of all the modes and determining the best temporary mode; carrying out different calculation of the parallax estimation mode or the motion estimation mode by the obtained best temporary mode and finally obtaining the best mode as a final coding mode; and ending the coding to the current macro block. The multi-view video coding method utilizes correlation between the motion estimation and parallax estimation mode, reduces calculation complexity of the multi-view video coding by ending unnecessary mode calculation in advance, and reduces the coding time by more than 50 percent under the premise that the image quality is almost not reduced, compared with all traversed coding modes.

Description

technical field [0001] The invention relates to a multi-viewpoint video coding method, which belongs to the technical field of multi-viewpoint video coding. Background technique [0002] With the development of communication and computer vision technology, people's requirements for video are not satisfied with simple two-dimensional flat video, and multi-viewpoint video is produced accordingly. Compared with ordinary video, multi-view video can provide better interactivity and more realistic 3D images. Correspondingly, some emerging applications have emerged for multi-viewpoint video, such as arbitrary viewpoint video / television, 3D video / television, and immersive video conferencing. Multi-view video is obtained by shooting the same scene with a group of cameras with similar performance and different positions. Since the data volume of a single video doubles with the increase of the number of cameras, efficient compression of multi-view video becomes a key to realize multi-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N19/597
Inventor 刘荣科刘庸民李君烨崔竞飞
Owner BEIHANG UNIV
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