Discontinuous phase segmentation and unwrapping method based on least square direction estimator

The invention provides a discontinuous phase segmentation method based on a least square direction estimator, and the method comprises the following steps: 1, calculating a gradient vector wrapping a phase and a direction vector of a stripe, when there is no noise, enabling the gradient vector and the direction vector of the stripe to be parallel, and when there is noise, forming a certain included angle between the gradient vector of the pixel point and the direction vector, and carrying out projection on the direction vector. According to the method, the fringe structuring characteristic of the wrapped phase diagram is utilized, the direction of fringes damaged by discontinuity and noise can change, and the least square direction estimator is utilized to enable the direction deviation, caused by the noise, of adjacent phase points to be minimum. 本发明提供了一种基于最小二乘方向估计器的不连续相位分割方法，包括以下步骤：步骤一：先计算包裹相位的梯度向量和条纹的方向向量，在没有噪声存在时，梯度向量和条纹的方向向量是平行的，当有噪声存在时，该像素点的梯度向量将会和方向向量有一定的夹角，此时在方向向量上进行投影。本发明利用了包裹相位图的条纹结构化特性，被不连续和噪声所破坏的条