增强现实系统中自适应光照调节技术研究

增强现实系统中要解决的关键问题之一是光照一致性,它是确保虚拟物体表面光照效果真实感,使其能和真实环境很好的融合的关键.系统中必须配合真实光源的情况,在虚拟物体上制作出明暗、反射、阴影等光照效果.通过对光照一致性问题以及由光照引起的相关问题的研究,引出了光照模型理论,推导了基于镜面反射的光照检测方法,研发了一个自适应的光照调节系统,较好解决了虚实场景的光照一致性,并且成功地将自适应的光照调节系统应用在基于投影的AR系统中,得到了良好的视觉效果.

Research on Automatically Adjusting-illumination Techniques of Augmented Reality System

The consistent illumination of the real and virtual scene is one of the key problems to solve in the field of augmented reality system. It plays an important role to provide good lighting effect of the virtual object in the surface,which will be consistent with the real environment well. According to the real illumination,the lighting effects such as lightness,reflection and shadow need to be created to the virtual objects in the system. The illumination problems and the related problems were researched which were resulted from light. The theory of lighting model was introduced and a method of detecting illumination was deduced based on specular reflection. An automatically adjusting-illumination system was developed to resolve the consistent illumination problems of the real and virtual scene. At last,the automatically adjusting-illumination system was successfully applied to the projection-based augmented reality system and the good effects have been obtained.