Abstract:

Pointoctree data structure and Blending array are desired to solve the difficulties of rendering speed and quality of a large scale pointbased datum. Pointoctree data structure can filter invisible points before the timeconsuming process of rendering and can help to select different detail levels and rendering mode according to the view point position to control the complexity and speed of rendering. A Blending array which is controlled by the interpolation error δ is desired to improve the rendering quality and remove the hidden surface.

Key words: pointbasedrendering (PBR), pointoctree, Blending; hidden surface removal (HSR)