Virtual Viewpoint Synthesis System Based On Multiple-Panoramas

With the rapid development of computer technology,the online system with virtual scene roaming has become increasingly common nowadays.The traditional system used to perform a series of operations like zooming and rotating based on current view,that is,users not only can have a 360-degree horizontal perspective with a fixed view point in the current panoramic space but can zoom in the parts that they're interested in.However,such fixed view of the virtual scene roaming is of less three-dimensional sense.In order to create a stronger sense for users,it needs to switch between viewpoints.In the process of switching,observer can't achieve a smooth transition if simply changes one viewpoint to another one.To improve user's immersion,it's a good way to generate a series of virtual perspectives between the viewpoint and viewpoint,so that the transition will be smoother.The main function of this online system lies in the synthesis of virtual viewpoint based on multiple panoramic images.At present,the most common way of synthesizing virtual viewpoints is to capture images of different viewpoints at different distances with cameras,and then use the traditional synthesis algorithm to synthesize virtual viewpoints between real viewpoints.Prior to this,ZhaoQiang and other people put forward a solution for synthesis of virtual viewpoint upon two panoramas.It takes two true viewpoints for reference,then a series of virtual viewpoints on the true viewpoints are synthesized.Nevertheless,the improvement of this new system is to expand the two viewpoints into three viewpoints,in this way,the virtual viewpoints can be generated from the line segment to the entire plane.The system not only makes the synthesis position out of the line limit,but also makes a better synthetic effect for target synthetic viewpoint than before because of taking advantages of more information on viewpoint.To conclude,some of the following technologies are mainly used in this system: solution of basic matrices,acquisition of feature points and feature matching,as well as other techniques such as triangulation.