GPU-Accelerated Fast Rendering Method for Multi-Resolution Geometry Image

To draw the multi-resolution geometry image(GIM) efficiently and realistically,we introduce the concept of hierarchy bounding sphere with saturated nature and the idea of error metric based on screen space,and present a error metric suitable for view-dependent GIM.As traditional crack elimination algorithms are complex and difficult to use GPU acceleration,we propose using the tangent function to control points shift to repair cracks among different resolution nodes on GPU efficiently,and to achieve fast and smooth transition among the nodes' grid.Experimental results show that the error metric can select quadtree nodes accurately,and keep 3D models' features clear.Furthermore,crack processing algorithm is easy to realize on GPU and can obtain high frame rate.