【摘 要】
:
针对现有射线跟踪算法效率低下的问题,利用虚拟源思想,设计了一种基于虚拟墙的射线跟踪算法.首先,通过将处于同一平面的墙面合并为“虚拟墙”,降低了算法搜索过程中墙面的遍
论文部分内容阅读
针对现有射线跟踪算法效率低下的问题,利用虚拟源思想,设计了一种基于虚拟墙的射线跟踪算法.首先,通过将处于同一平面的墙面合并为“虚拟墙”,降低了算法搜索过程中墙面的遍历次数.在此基础上,通过设计“透光区”、“光扇区”等有效性判决条件,完成节点有效性的判决,避免了无效节点的混入,减少了计算复杂度.最后,利用深度优先搜索算法完成虚拟源树状结构的建立,无须重复遍历即可获得发射点到接收点的全部有效路径.仿真结果表明,该算法路径损耗的预测精度随着树遍历深度的增加而提高,同时降低了算法复杂度.
其他文献
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
Steroid hormone serving as an immunosuppressor often induces immunotoxicity when administered in highest dosage or accumulated in long-term usage. The stage of
A site-directed mutant DNA fragment was synthesized and transfected into clinical Neisseria Gonorrhoeae (NG) stains to construct the transformants that containe
In order to screen the genes differentially expressed in two human prostate cancer cells with different metastasis potentials, suppression subtractive hybridiza
In order to investigate the effect of interleukin-18 (IL-18) on airway inflammation in asthmatic murine models and its mechanisms, BALB/C mice were randomly div
The preventive effects of nitroglycerine (NG) on glucocorticoid-induced osteoporosis in growing rats were studied. Three-month-old female Wistar rats were rando
Functional brain imaging studies commonly use either resting or passive task states as their control conditions, and typically identify the activation brain reg
Nitric oxide (NO) as an immunoregulatory molecule, predominantly depending on S-nitrosylation, acts as a versatile player that executes its regulation and signa
Traumatic brain injury (TBI) is one of the leading causes of morbidity and mortality in young people. Inflammatory cytokines play an important part in the patho
开发一套基于标准Lx I协议的24通道桥梁微应变采集器的上级采集管理软件,具备数据采集管理的软件系统,能进行连续不间断的数据采集,实现应变参数的动静态测量。采用了优化的多线程并发队列技术,提高了采集软件的实时性,并具有通道独立的应变传感器调零和灵敏度修正功能。对下级多个微应变采集器统一管理,实现对任意采集器的各通道独立参数配置、并以多种采集方式进行数据采集、传输控制、采集数据实时显示与回放、数据库