基于双目摆线结构光的三维重建技术OA

To address the limitations of monocular line structured light systems,which have restricted measurement ranges and typically require moving platforms,a three-dimensional reconstruction method based on binocular scanning line structured light is proposed.The system employs a stepper motor to drive a line laser for rotational scanning,generating a multi-angle light plane sequence.By integrating a binocular stereo vision imaging model with epipolar geometry constraints,the method directly acquires spatial depth information with both cameras and the workpiece remaining stationary,thereby achieving three-dimensional reconstruction.Monocular and binocular imaging models along with a disparity model under epipolar constraints are established.The gray centroid method is utilized for laser stripe center extraction,enabling sub-pixel level feature localization.High-precision intrinsic and extrinsic parameters are obtained through camera calibration experiments,with an average reprojection error of 0.05 pixels.The system's measurement accuracy is validated using ceramic standard spheres,with sphere diameter measurement errors controlled within±0.31 mm and an average absolute error of approximately 0.10 mm for sphere center distance measurements.In three-dimensional reconstruction experiments on typical targets such as a computer mouse and fillet welding plates,continuous and complete point cloud results are obtained,demonstrating the effectiveness and stability of the proposed method for complex curved surfaces and industrial weld inspection scenarios,thus presenting practical engineering application value.