Multi-view video coding method

A video encoding and multi-view technology, applied in the field of digital image processing and video encoding and decoding, can solve the problems of unsatisfactory encoding effect and achieve good results

Inactive Publication Date: 2008-04-30
SICHUAN PANOVASIC TECH
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Problems solved by technology

However, for converging camera systems with large rotational motion between cameras, such as Figure 4 As shown, there is a large deformation between the images of different viewing angles due to the different camera angles, and the effect of predictive coding using parallax compensation without considering the influence of deformation is not ideal

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[0041] Single-view video has three types of images: I for intra-frame prediction coding, P for forward prediction, and B for bi-directional prediction. Image predictive encoding of P1 image, bidirectional prediction of B1 and B2 images with I0 and P1 as reference images, and so on, the encoding sequence is I0, P1, B1, B2, P2, B3, B4. By changing the placement positions of I pictures and P pictures or setting different numbers of consecutive B pictures, different formats of single-view video prediction structures can be generated.

[0042] Since there are three different prediction modes for multi-view video and multiple video sequences of different views, the prediction structure of multi-view video coding is more complex and diverse. Single-view video divides images into three types: I, P, and B on the time axis. Similarly, multi-view videos can be divided into three types of video in the spatial domain, namely, I video, P video, and B video. . I video refers to a video seq...

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Abstract

The invention relates to a digital image processing and video coding/decoding technique, specifically a view synthesis predictive coding. The invention aims to solve the technical problems to provide a multi-view video coding method suitable for various camera systems. The multi-view video coding method is characterized in that the method comprises the following steps: a, independently coding video sequences of one or more views by means of motion compensation prediction; b, coding other video sequences by the minimal-cost one prediction mode selected from parallax compensation prediction, view synthesis prediction, and motion compensation prediction. The invention ensures better effect of video coding.

Description

technical field [0001] The present invention relates to digital image processing and video coding and decoding technologies, in particular to view synthesis predictive coding. Background technique [0002] Multi-view video (Multi-view video) refers to the video signal obtained by shooting the same scene with multiple cameras in different positions and directions. Foundation. Using multi-view video and image synthesis technology can generate video information of any viewing angle within the coverage of the camera, and observers can freely switch viewing angles according to their own preferences, thus obtaining a high-quality video viewing experience with interactive functions. Since multi-view video data doubles with the increase of the number of cameras, efficient compression coding of massive data in multi-view video has become a research hotspot in the field of video processing. MPEG, an international standard organization, started research on 3D audio and video (3DAV) i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N19/597
Inventor 张小云
Owner SICHUAN PANOVASIC TECH
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