激光与光电子学进展, 2020, 57 (24): 241020, 网络出版: 2020-11-18
基于边缘检测及可靠性排序算法的三维曲面重构 下载: 1144次
Three-Dimensional Surface Reconstruction Based on Edge Detection and Reliability Sorting Algorithm
图像处理 相位展开 Canny边缘检测算法 二阶差分 区域展开 三维重建 image processing phase unwrapping Canny edge detection algorithm second-order difference area expansion three-dimensional reconstruction
摘要
为了克服噪声导致的相位展开不连续现象,用Canny边缘检测算法获取重建模型的真实边缘,结合二阶差分函数计算边缘可靠性,并根据可靠性的大小逐区域展开相位,以达到稳定展开模型全局相位的目的。提取传统算法和本算法相位展开后任意行(或列)的数据点,得到两种算法相对原始数据点的标准差分别为0.0562和0.0121。同时,本算法可以解决枝切法中因噪声过大导致的相位展开稳定性低以及最小二乘法在重建模型中断层的问题,能很好地克服噪声并进行三维重建。
Abstract
To overcome the discontinuity of phase unwrapping caused by noise, in this paper, Canny edge detection algorithm is used to get the real edge of the reconstructed model, a second-order difference function is combined to calculate the edge reliability, and the phase is expanded region by region according to the reliability, so as to achieve the purpose of stable global phase unwrapping. The data points of any row (or column) after phase unwrapping of traditional algorithm and this algorithm are unwrapped, the standard deviations of the two algorithms relative to the original data points are 0.0562 and 0.0121, respectively. At the same time, this algorithm can solve the problem of low stability of phase unwrapping caused by excessive noise in the branch cutting method and the problem of discontinuity layer in the reconstructing model by the least square method, which overcome the noise well and carry out three-dimensional reconstruction.
虞梓豪, 刘瑾, 杨海马, 张鹏程, 陈毅. 基于边缘检测及可靠性排序算法的三维曲面重构[J]. 激光与光电子学进展, 2020, 57(24): 241020. Zihao Yu, Jin Liu, Haima Yang, Pengcheng Zhang, Yi Chen. Three-Dimensional Surface Reconstruction Based on Edge Detection and Reliability Sorting Algorithm[J]. Laser & Optoelectronics Progress, 2020, 57(24): 241020.