本文以Visual Studio 2010为平台。使用C#语言,设计并实施了航带法空中三角测量程序。本文叙述了航带法空中三角测量的原理以及程序设计与实验结果,将三个像对的数据使用编译的程序来进行实验。实验主要进行了像对的相对定向、绝对定向...本文以Visual Studio 2010为平台。使用C#语言,设计并实施了航带法空中三角测量程序。本文叙述了航带法空中三角测量的原理以及程序设计与实验结果,将三个像对的数据使用编译的程序来进行实验。实验主要进行了像对的相对定向、绝对定向、模型连接和模型的非线性改正等步骤,并剖析了程序结果的可靠性。展开更多
A surgical simulation and evaluation method in the anterior cruciate ligament(ACL)reconstructionwith image-free navigation was presented.Firstly,video tracking module,bone surface reconstructionmodule and virtual simu...A surgical simulation and evaluation method in the anterior cruciate ligament(ACL)reconstructionwith image-free navigation was presented.Firstly,video tracking module,bone surface reconstructionmodule and virtual simulation module of this system were discussed.Secondly,the coordinate relations ofseveral surgery objects(including surgical instrument,anatomical,camera and screen)in the surgicalenvironment,the tracking based on MicronTracker with two cameras and the bone surface real-time recon-struction based on the Delaunay algorithm were introduced in detail.Finally,experiments of anisometrymeasurement and virtual simulation on two plastics were carried out to verify the validity of the proposedmethod.The anisometry value of reconstructed ACL was 8.970039mm.The effectiveness of ACL recon-struction has been proved by preliminary evaluation trials.展开更多
机载LiDAR系统获取的点云数据在经过预处理解算后仍会残余部分系统误差,因此,在利用点云数据生成DEM等相关数字产品之前,必须检查并改正这部分系统误差。以此为主要目标,本文对机载LiDAR数据的逐航带平差与航带区域网平差展开研究,并以M...机载LiDAR系统获取的点云数据在经过预处理解算后仍会残余部分系统误差,因此,在利用点云数据生成DEM等相关数字产品之前,必须检查并改正这部分系统误差。以此为主要目标,本文对机载LiDAR数据的逐航带平差与航带区域网平差展开研究,并以Microsoft Visual Studio 2008 C++为开发平台、基于实测数据对比了两者在完成多航带构成的测区平差时的精度,结果表明:机载LiDAR数据的航带区域网平差方法相较于LZD算法可有效降低逐航带平差导致的误差累积,精度更高。展开更多
文摘本文以Visual Studio 2010为平台。使用C#语言,设计并实施了航带法空中三角测量程序。本文叙述了航带法空中三角测量的原理以及程序设计与实验结果,将三个像对的数据使用编译的程序来进行实验。实验主要进行了像对的相对定向、绝对定向、模型连接和模型的非线性改正等步骤,并剖析了程序结果的可靠性。
基金Supported by the National High Technology Research and Development Programme of China (No. 2004AA421022)National Science Fund for Distinguished Young Scholars of P. R. China (No. 60525314)National Science & Technology Pillar Program in the Eleventh Five-year Plan ( No.2006BAI03A16)
文摘A surgical simulation and evaluation method in the anterior cruciate ligament(ACL)reconstructionwith image-free navigation was presented.Firstly,video tracking module,bone surface reconstructionmodule and virtual simulation module of this system were discussed.Secondly,the coordinate relations ofseveral surgery objects(including surgical instrument,anatomical,camera and screen)in the surgicalenvironment,the tracking based on MicronTracker with two cameras and the bone surface real-time recon-struction based on the Delaunay algorithm were introduced in detail.Finally,experiments of anisometrymeasurement and virtual simulation on two plastics were carried out to verify the validity of the proposedmethod.The anisometry value of reconstructed ACL was 8.970039mm.The effectiveness of ACL recon-struction has been proved by preliminary evaluation trials.
文摘机载LiDAR系统获取的点云数据在经过预处理解算后仍会残余部分系统误差,因此,在利用点云数据生成DEM等相关数字产品之前,必须检查并改正这部分系统误差。以此为主要目标,本文对机载LiDAR数据的逐航带平差与航带区域网平差展开研究,并以Microsoft Visual Studio 2008 C++为开发平台、基于实测数据对比了两者在完成多航带构成的测区平差时的精度,结果表明:机载LiDAR数据的航带区域网平差方法相较于LZD算法可有效降低逐航带平差导致的误差累积,精度更高。
