摘要
为利用近景摄影测量进行面部软组织三维测量和重建,首先建立了一个小型室内三维控制场,解算出数字相机的内外方位元素,同时选择了多值二次曲面进行了相机的像差校正,以提高像点坐标的量算精度。以直接线性变换为基础开发了数字近景摄影测量系统,使人体颅面软组织的三维测量精度高,方法简便实用,成本低。采用带约束条件的Delaunay三角网算法生成DEM数据,利用OpenGL和VC混合编程读取DEM数据,生成面部软组织的三维模型,实现三维模型的重建。重建的面部具有很强的直观性和真实性,为口腔正畸学提供面部软组织的诊断和研究提供了有效的方法。
In order to use close photogrammetry to survey and rebuild facial soft tissue, a small three control place is built, the interior and exterior element digital camera is calculated and conicoid is selected to rectify the photograonoetric distortion to improve precision of surveying. The digital close photogrammetry system is developed based on the direct linear transformation to realize surveying of the three dimension soft tissue. The Delaunay triangle net is used to build DEM and the programmer using OpenCL and VC is written to read DEM to realize rebuild soft tissue. The rebuilt face is clear and real to provide the effective method for diagnosing and researching the face soft tissue.
出处
《西安科技大学学报》
CAS
北大核心
2007年第4期617-620,共4页
Journal of Xi’an University of Science and Technology
基金
现代工程测量国家测绘局重点实验室开放基金项目(ES-SBSM(06)-07)
关键词
直接线性变换
近景摄影测量
软组织三维测量与重建
direct linear transformation
close-range photogrammetry
three dimensional survey and rebuild of soft tissue
