作者:杨波
出处:北京理工大学 2005
摘要:本文对自由曲面反射式照明系统的计算机辅助设计进行了研究。使用了在计算机辅助造型领域中被广泛采用的双三次B样条曲面作为反射器的面型。使用点光源利用光路追迹和数值积分相结合的算法,自动生成反射器上各个区块的型值点坐标,通过一个特定方程组的求解得到反射器曲面的控制顶点,从而能够精确描述反射器的面型。 为了 ...
作者:程雪岷
学位名称:博士
出处:北京理工大学 2004
关键词:光学设计;智能化
摘要:光学系统的智能化设计优化方法研究旨在逐渐减少设计工作对设计者经验的依赖,提高设计工作的效率和设计结果的质量,对我国光学工业和国防建设的发展具有重要的理论意义和实用价值。本文针对该领域中的全局优化算法、玻璃类离散变量优化方法、在优化进程中自动增减光学元件的机The research on intell ...
作者:袁慧晶
学位名称:博士
出处:北京理工大学 2005
关键词:医学图像;图像处理;目标检测;图像分割;角点检测;瞳孔检测;血管分割
摘要:本文致力于在生物医学应用领域的图形图像技术的研究:结合实际项目需要,对生物视觉、学习认知等生物科学研究实验中的图形图像技术及其应用系统进行了研究。为视觉神经生物学研究实验,研制了基于PC的视觉刺激系统,将动画刺激、信号采集与数据处理功能高度集成,并对视觉刺激系统的关键技术进行了探讨;提出一种基于遗传 ...
作者:Dapu Pi,Juan Liu,Yongtian Wang (Beijing Engineering Research Center for Mixed Reality and Advanced Display,School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China)
出处:光:科学与应用(英文版) 2022
关键词:HOLOGRAPHIC;DYNAMIC;OVERCOME
摘要:Holographic three-dimensional display is an important display technique because it can provide all depth information of a real or virtual scene withou ...
作者:Zexin Feng,Dewen Cheng,Yongtian Wang (Beijing Engineering Research Center of Mixed Reality and Advanced Display,School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China;Beijing Key Laboratory of Advanced Optical Remote Sensing Technology,School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China)
出处:光子学研究(英文) 2021
摘要:It is still very challenging to determine a freeform lens for converting a given input beam into a prescribed output beam where not only the irradianc ...
作者:Xiaoli Jing1;Ruizhe Zhao1;Xin Li1;Qiang Jiang1;Chengzhi Li1;Guangzhou Geng2;Junjie Li2;Yongtian Wang1;Lingling Huang3; (1 Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 10081, China. 2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100191, China. 3 Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 10081, China. huanglingling@bit.edu.cn.)
出处:Nature communications 2022
摘要:Three-dimensional (3D) imaging is a crucial information acquisition technology for light detection, autonomous vehicles, gesture recognition, machine ...