A new algorithm for interactive rendering of huge point-sampled geometry based on view-dependent level-of-detail(LOD) and out-of-core techniques is presented.

Firstly, a hierarchical quadtree-based method of organizing the data of ground objects in a large area was proposed; Secondly, the interactive rendering process of ground objects in a large area was introduced, and the steps of view-frustum culling of quadtree nodes and occlusion culling were described particularly.

Objective To satisfy different observational demands, a real-time interactive volume rendering for laser scanning confocal microscope (LSCM) image was realized on the PC.

This paper presents a computer interactive plotting method of drawing three vanishing-point perspective views by any given three points on the picture plane as the vanishing-points of the perspective.