基于双目内窥镜的散斑三维重建系统研究

传统的内窥镜只能提供清晰的图像,无法进行三维测量和三维重建.该文提出一种基于立体视觉原理的双目内窥镜系统,用于实现三维测量和三维重建,并开发了一套基于双目内窥镜的散斑三维重建系统.为了提高系统的标定精度和三维重建质量,该文提出一种高精度双目内窥镜标定参数优化方法及基于光轴双次旋转的立体校正算法.其中,测量系统由一个结构...

A Speckle 3D Reconstruction System Based on Binocular Endoscope

The traditional binocular endoscope can only provide clear images, and can not carry out threedimensional measurement/reconstruction. In this paper, a binocular endoscope system based on the stereo vision principle is proposed to realize three-dimensional measurement/reconstruction, and a speckle threedimensional reconstruction system based on a binocular endoscope is developed. To improve the calibration accuracy and 3D reconstruction quality of the system, a high-precision binocular endoscope calibration parameters optimization method and a stereo correction algorithm based on twice rotation of the optical axis are proposed in this paper. The measurement system consists of a structured light illumination system and a binocular endoscope. Firstly, the image with random speckle is characterized by projection through the structured light illumination system, and then the epipolar correction and stereo matching are carried out after stereo imaging by the binocular endoscope. Finally, the three-dimensional information of the object is reconstructed according to the principle of triangulation. The experimental results show that compared with the traditional method, the measurement accuracy of standard bodies such as cone and ball is significantly improved.