【摘要】 针对三维点云可视性差与光线折射导致点云重建精度低的问题，提出了基于极线约束的水下目标激光重建方法。通过点的对应关系得到仿射变换矩阵，实现“水下-陆上”图像仿射变换，削弱光线折射的影响，进而提升重建精度。利用极线约束原理改进激光特征点提取方法并完成点云着色，进一步提升重建精度。对比实验结果表明，所提方法的平均重建误差为0.459 mm，优于现有的三维重建算法，所提方法实现了水下目标重建精度提升与三维点云可视性的提升。更多还原

【Abstract】 To address the issue of low point-cloud reconstruction accuracy due to poor visibility and light refraction, a laser reconstruction method for underwater targets based on epipolar constraint is proposed. The proposed method uses point correspondence to obtain an affine transformation matrix, which facilitates the affine transformation of underwater images to land images, thereby mitigates the effects of light refraction and enhancing the reconstruction accuracy. The application of the epipolar constraint principle promotes laser feature point extraction and completes point cloud coloring, further increases the reconstruction accuracy. Comparative experimental results indicate that the average measurement error of the proposed method is 0. 459 mm, outperforming the existing three-dimensional(3D) reconstruction methods. The proposed method achieves improvements in the accuracy of underwater target reconstruction and the visibility of 3D point clouds.更多还原