| The transmission of video over IP network has a strong demand on bandwidth, delay and reliability. More views mean more data. Comparing with traditional single view videos, Multi-View videos would occupy more transmission bandwidth. Because of the scheme of do one's best, packet loss is inevitable during the video transmission over IP network. When packet loss happens to one view of multi-view video, it will have a bad effect to other views and to the whole video. Thus, reduce the transmission bandwidth and degree of damage is the key point to ensure the quality of multi-view video.In order to satisfy the demand of transmission of multi-view video, the essay focus on the bandwidth and the damage of transmission of multi-view video, studies the rate smoothing scheme and the effect of damage to multi-view video.In the view classification transmission scheme, data from different views are transferred in a circle order, which would cause a drastic jitter on the transmission rate of each view, the phenomenon will require more transmission bandwidth which would seriously affect transmission quality. According to the characteristic view classification transmission scheme, the author introduce an adaptive double-buffered rate smoothing method and managed to restrict this jitter to less than ten percent by applying the rate method to each view.Because of multi angles, the data amount of multi-view video will several times larger than traditional single view video. But IP network can't supply steady bandwidth. In order to reduce the difficulty of transmission of multi-view video, we need to compress video information as far as possible to show multi- view video with less amount of data. The data packet of highly compressed multi-view video has a strong relativity with each other. Each packet loss will affect the whole visual quality of multi-view video. This essay encode the video in resolution 1920×1080 with MPEG2 standard in 4:2:0 sample format, then send the video through network with different qualities. It turns out that while the bit rate of side-by-side multi-view video achieves 8Mbps-9Mbps and at least the packet loss rate is between 0.0002-0.0005, the video quality will satisfy user's subjective feelings. |
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