摘要
提出了一种改进的光线投影体绘制算法,利用重采样点在两坐标系中的矩阵变换特性,减少矩阵的运算量,加快重采样计算过程,从而加速了光线投影的效率。实验结果表明改进后的算法,可以利用OpenGL图形标准及硬件加速对图像序列进行三维重建,重建效果逼真,重建速度较快,具有算法简单、实现容易的特点。
Puts forward a new fast algorithm of ray casting volume rendering. This algorithm reduces matrix computation by the matrix transformation characteristics of re-sampling points in two coordinate system, so re-sampled computational process is speeded up. Improves the efficiency of ray casting greatly. The experiment results show that result and fast speed can be achieved. Also,it is simple to turn this algorithm into programs.
出处
《医疗设备信息》
2007年第8期1-2,6,共3页
Information of Medical Equipment
基金
河南科技大学科研基金资助项目(04ZY012)
关键词
体绘制算法
光线投影算法
三维重建
volume rendering
ray casting algorithm
3D reconstruction
