Researches on Several Key Techniques of Three Dimension Video Coding
|School||University of Science and Technology of China|
|Course||Signal and Information Processing|
|Keywords||3D video coding Asymmetric stereoscopic video encoding Scalable video coding Depth video compression|
In recent years, with the rapid development of the field of computer graphics and computer vision, 3D video coding has become a hot research topic in the field of video compression. Meanwhile, the huge success of the stereoscopic film \Due to the huge amount of three-dimensional video data, research and efficient three-dimensional video compression coding technology is crucial. At the same time, the practical application of the diversity of the network environment, the user terminal for video encoding technology scalability requirements. Asymmetric stereoscopic video encoding as an important branch of the multi-view video coding compression performance of its more efficient and close to the subjective feelings of the ordinary three-dimensional video, etc. and well received by the attention. Therefore, based on asymmetric stereoscopic video encoding these characteristics scalable stereo video coding research has certain theoretical and practical values. Further, as an important part of the three-dimensional video, the depth of the bit rate of the video in the total bit rate of the three-dimensional video occupies a lot of gravity. The current video coding technology and more video features based on texture and design, and did not take full advantage of the characteristics of depth video. Therefore, the study of the depth video compression technology has certain theoretical and practical value. Based on the subjective characteristics of the non-symmetric three-dimensional video, a joint inter-view prediction and inter-layer prediction techniques, scalable stereo video coding technology research. In addition, through the analysis of the characteristics of depth video, research and improved depth video compression technology. The paper mainly work and innovations are as follows: 1. Proposed stereoscopic video encoding method having a new spatial scalability. Asymmetric stereoscopic video encoding compression and high performance subjective visual experience close to ordinary three-dimensional video features, scalability using H.264/AVC extension standard scalable video coding of hierarchical coding theory, a kind of space asymmetric stereoscopic video coding framework. Introduced in the non-basic perspective stereo video coding the space scalability and use of inter-view prediction techniques in the space layer coding. Depending on the application conditions and demand stream encoded by the algorithm, decoding asymmetric stereoscopic video or symmetric three-dimensional video. In the case that provides a resolution variable, possible to improve the stereoscopic video compression performance. Improved and explore the depth of video compression technology. Based on the depth of the video texture content gradients in the full analysis of the lack of depth video compression coding technology in, for the lack of depth video features and existing coding depth video compression method. In this paper, improved depth video compression mode selection process and the depth of the video spatially adaptive quantization coding technology. The experimental results show that this paper, scalable stereo video coding compression algorithm performance is much better than other stereoscopic video coding scheme with the same scalability compression performance. At the same time, this paper improved the depth of the compression performance of video coding algorithms but also better than the compression performance of existing algorithms.