The Relighting Technology Research Of Live Action In Different Viewpoints

Essence of relighting technology is the process of relighting the target object, as an important means of augmented reality of the graphics has been extensive researched and applied. If you use traditional geometric model-based rendering method, there will be exist some problems about modeling, rendering speed and realistic aspects. The relighting technology of live action in different viewpoints technology, which describes the scene as the form of image sequence. The image sequence of human movement is combined with realistic scenes, which makes body graphics sequence with the reality of the surrounding environment visually perfect together to achieve a realistic effect, it is important to study.This article has researched the relighting technology of live action in different viewpoints and the technology of image synthesis.First, around the light field hardware system design and data acquisition, the estimated surface reflectance properties and geometric information of complex objects (including human and non-rigid objects) and realistic reproduction technology development status under the new light environment have been described;Secondly, according to the specific needs of the relighting technology of live action in different viewpoints, the paper introduced and analyzed the multi-angle multi-light image acquisition system. In order to control the LED and camera on the acquisition system, the paper developed the software of lighting division and camera acquisition and control program;Third, under the system of the image acquisition device, to study how to use image simulation light and achieve body image sequence synthesized with changing light environment;Finally, use the matting technology for human movement foreground image with the spherical texture mapping the background image for image synthesis, as the ambient light changes and viewpoint changes, and ultimately the synthesis of realistic images of human movement is reproduction in a new lighting condition and a new viewpoint.