Abstract
Free Viewpoint TV is a system to view natural videos and allow users to control the viewpoint interactively. The main idea is that the users can switch between multiple video streams to find viewpoints of their own choice. The purpose of this research is to provide fast switching between video streams so that users experience less delay while viewpoint switching. In this paper, we discussed different stream switching methods in detail, including their transmission issues. In addition, we discussed various scenarios for fast stream switching in order to make services more interactive by minimizing delays. The quality of service is another factor which can be improved by assigning priorities to the packets. In addition, we discussed simultaneous stream transmission methods which are based on predictions and reduced quality streams for fast switching. Finally, we propose a prediction algorithm (Linear Regression) and system model for fast viewpoint switching and evaluate simultaneous stream transmission methods for free Viewpoint TV. The results indicate that the proposed system model improves the viewpoint switching and perform fast switching.
Highlights
Video streaming is getting popularity in communication and networks in this information age
Free Viewpoint TV (FTV) is the latest technology which facilitates users to switch between multiple streams to watch viewpoint of their own choice
We discussed different approaches according to categories like (1) Transmission methods and video coding (2) Stream switching methods, (3) Simultaneous Stream Transmission methods, etc
Summary
Video streaming is getting popularity in communication and networks in this information age. Free Viewpoint TV (FTV) is the latest technology which facilitates users to switch between multiple streams to find viewpoints of their own choice. This stream switching should be fast enough so that users should not be annoyed by delaying. Three-dimensional TV (3DTV) and FTV are critical applications of multi-view imaging Both are based on rendering techniques, making the application much more interactive. The main focus of this paper is to provide a deep knowledge of FTV based systems which are built on stream switching techniques in order to provide fast and interactive stream switching.
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