基于编码标志点的数码相机三维测量与重构

介绍了利用数码相机作为图像传感器,在物体表面设置编码标志点,通过对编码标志点进行识别和检测,从而确定标志点的空间位置,实现了对物体表面某些特定点三维信息的无接触检测。介绍了其中的关键技术,如标志点的设计与检测、基础矩阵的求解、数码相机参数的标定以及内外参数的捆绑调整等,给出了检测实例并进行了精度验证。实验证明,该方法结构简单,成本低廉,数据采集快,移动方便,检测范围大,可满足三维物体特别是大面积物体空间检测的需求。

A method for 3D scanning and reconstruction based on coded points

The digital camera is used as a image sensor to identify the coded points which is set on the target surface and to detect their spatial location.The principle of detecting the 3D data of some special points on the target surface without contacting it is proposed.Several key implementing techniques are introduced including designing and detecting the coded points,solving the fundamental matrix,calibrating the digital camera,and bundle adjusting of the intrinsic parameter and the extrinsic parameter.One experiment is given to verify simplicity,rapidity and feasibility of the system for the object which has large surface.