Multi-view video coding method oriented for interactive application
A technology of multi-viewpoint video and encoding method, which is applied in the field of encoding and compression of multi-viewpoint video signals, can solve the problem of not being able to obtain the best motion matching information of encoded macroblocks, and achieve the effects of supporting viewpoint switching, optimizing performance, and high compression efficiency
Inactive Publication Date: 2012-05-09
NANJING UNIV OF POSTS & TELECOMM
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However, sometimes the best motion matching information of the current coded macroblock cannot be obtained through the global disparity
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[0037] The present invention will be further described in detail below in conjunction with the embodiments of the accompanying drawings, where an 8×8 multi-viewpoint image group structure is taken as an example (such as image 3 As shown, each image group has a total of 8 viewpoints, 8 moments, and a total of 64 frames).
[0038] refer to figure 1 , in multi-view video coding, a group of videos obtained by shooting the same scene from different angles by a multi-view acquisition system with N cameras, that is, N original viewpoints; N original viewpoint videos are obtained after passing through a multi-view video encoding and decoding system Road recovery viewpoint. In the multi-view video codec system, the sending end uses the multi-view video encoder to encode and compress the data while ensuring the information quality and transmission security, and after being transmitted to the receiving end, it is decoded by the multi-view video decoder.
[0039] refer to image 3, a...
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The invention relates to the technical field of multi-view video coding, and discloses a multi-view video coding method oriented for interactive application. In the method, in order to improve the interactive performance of a multi-view video, the forecasting relationship among key frame image viewpoints is firstly corrected, parallax compensation prediction is only applied to key frame images, and motion compensation prediction is only carried out on non-key frame images. In addition, the multi-view video has high correlation on video content, and the motion information of reference images among the viewpoints also has high dependence. According to this principle, the invention further provides an adaptive motion vector refine algorithm with a motion information jumping mode which is used for optimizing the motion compensation prediction performance of the non-key frame images. Under the premise of guaranteeing high compression efficiency, the method optimizes the random access performance of the multi-view video and supports rapid viewpoint switching, thus improving the interactive performance of the multi-view video.
Description
technical field [0001] The invention relates to a method for encoding and compressing multi-viewpoint video signals, in particular to an interactive application-oriented video signal compression method based on motion information skipping encoding. Background technique [0002] Multi-view video is a research hotspot in the field of multimedia. As the core technology in 3D audio and video applications such as FTV (Free Viewpoint Television) and 3DTV (3D Television), multi-viewpoint video technology aims to solve problems such as compression, interaction, storage and transmission of 3D interactive video. The multi-viewpoint video signal is a group of video signals obtained by shooting the actual scene by the camera array. It can provide video image information from different angles of the shooting scene, and use one or more of the video information to synthesize the information of any viewpoint. The point of view or angle of view can be changed arbitrarily when watching, so a...
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IPC IPC(8): H04N7/26H04N7/32H04N19/597
Inventor 刘峰郑海棠
Owner NANJING UNIV OF POSTS & TELECOMM