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| 虚拟内窥镜实时体绘制技术研究 | |
| 引用本文： | 彭延军,石教英,郑永果.虚拟内窥镜实时体绘制技术研究[J].计算机辅助设计与图形学学报,2004,16(2):186-190. |
| 作者姓名： | 彭延军 石教英 郑永果 |
| 作者单位： | 1. 山东科技大学信息学院,泰安,271019;浙江大学CAD&CG国家重点实验室,杭州,310027 2. 浙江大学CAD&CG国家重点实验室,杭州,310027 3. 山东科技大学信息学院,泰安,271019 |
| 基金项目： | 国家自然科学基金重点项目 (60 0 3 3 0 10 )，山东省自然科学基金(Y2 0 0 2G0 7)资助 |
| 摘 要： | 针对虚拟内窥镜技术中空体素较多和近景因素对视觉影响较大的特点，将一帧场景的绘制分为近景和远景两个部分．近景与远景的绘制分别采用加速的光线投射和改进的快速对象投影方法处理，较大地提高了当前帧的绘制速度；利用相邻帧的连贯性特点，将当前帧远景的绘制结果进行变换，得到下一帧远景的部分绘制结果，进一步提高了漫游的实时性。 |
| 关 键 词： | 虚拟内窥镜 实时性 体素 医学图像 图像处理 |
Accelerating the Volume Rendering in Virtual Endoscopy |
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| Peng Yanjun , Shi Jiaoying Zheng Yongguo.Accelerating the Volume Rendering in Virtual Endoscopy[J].Journal of Computer-Aided Design & Computer Graphics,2004,16(2):186-190. | |
| Authors: | Peng Yanjun Shi Jiaoying Zheng Yongguo |
| Affiliation: | Peng Yanjun 1,2) Shi Jiaoying 2) Zheng Yongguo 1) 1) |
| Abstract: | Based on the facts that in virtual endoscopy there are many empty voxels and the human vision is more sensitive to near scene, our accelerating algorithm divides the rendering process into near scene and far scene parts. An accelerated ray-casting method is adapted for rendering the near scene and a fast splatting method is adapted for rendering the far scene. The inherent coherence existed in adjacent frames is used to accelerate the navigation speed. A part of far scene of the next frame may be generated by simply transforming part of far scene of the current frame. |
| Keywords: | virtual endoscopy voxel ray-casting |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |