An Accelerative Ray Casting Algorithm Based on Crossing-Area Technique
- Resource Type
- Conference
- Authors
- Gong, Faming; Wang, Hongnan
- Source
- 2010 International Conference on Machine Vision and Human-machine Interface Machine Vision and Human-Machine Interface (MVHI), 2010 International Conference on. :468-471 Apr, 2010
- Subject
- Computing and Processing
Communication, Networking and Broadcast Technologies
Bioengineering
General Topics for Engineers
Robotics and Control Systems
Acceleration
Casting
Rendering (computer graphics)
Sampling methods
Educational institutions
Computer interfaces
Computer vision
Biomedical engineering
Petroleum
Cities and towns
volume rendering
ray casting algorithm
crossing area technique
linear octree
- Language
Ray casting is one of the best volume rendering algorithms for 3D reconstruction of medical image, with the main problem of the slower drawing. According to the idea of space-leaping technology, this paper presents an accelerative method based on the crossing-area technique. The volume data is cut with the bounding box techniques, the linear octree constructed with the value of the color gradient and the octree nodes of neighborhood instead of equidistant sampling points with the volume data subdivision to avoid the linear interpolation calculations for three times. The results show that the algorithm can improve the rendering speed effectively.