视点相关的蛋白质分子表面多尺度可视化  

View-dependent Multi-scale Visualization of Protein Molecular Surface

作　　者：王艳芬[1] 郭栋梁[2,1] 聂俊岚[2,1] 胡正平[1] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004 [2]燕山大学河北省计算机虚拟技术与系统集成重点实验室,河北秦皇岛066004

出　　处：《小型微型计算机系统》2016年第6期1339-1343,共5页Journal of Chinese Computer Systems

基　　金：国家"八六三"高技术研究发展计划项目资助;国家自然科学基金项目(61071199)资助;河北省自然科学基金项目(F2013203099)资助;燕山大学青年教师自主计划课题项目(13LGB016)资助

摘　　要：针对单尺度蛋白质大分子表面模型构建复杂、可视化蛋白质分子表面的效率较低,提出一种视点相关的蛋白质分子表面多尺度可视化方法.通过设计视点相关的表面绘制策略,得出多尺度划分标准,根据屏幕空间面积阈值对三基元集合进行多尺度子集筛选;并采用基于代数曲面的光线投射算法进行分子表面着色.实验结果表明,该方法实现了视点近处精确描述、远处显示轮廓的多尺度分子表面的无缝连续可视化,在保证蛋白质大分子展现效果真实可靠的前提下,有效提升了展现和交互分析蛋白质分子表面效果的效率.In accordance with the complex construction and the difficult real-time visualization of macromolecule surface models, the viewependent multi-scale molecular surface visualization method was proposed. View-dependent surface rendering strategy is designed, the multi-scale division standard is worked out, and multi-scale subsets are screened from the three primitive set according to the screen space area threshold. In addition, the algebraic based ray-casting algorithm is introduced to shading molecular surfaces. The experimental results show that, our method implements seamless visualization of multi-scale molecular surface that precisely display in near and silhouettes in distant. On the premise of guaranteeing rendering quality, this method realizes the seamless continuous visualization of multi-scale molecular surfaces with the viewpoint-near precise description and viewpoint-distant contour display, which improves the rendering efficiency of the original single-scaling visualization method effectively.

关 键 词：分子表面 多尺度可视化 视点相关 实时绘制 光线投射 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]