Goldstein解缠算法基于二维Goldstein枝切相位进行解缠，输入为.mat格式的复数据，输出为解缠相位图像(GoldsteinUnwrap2D implements 2D Goldstein branch cut phase unwrapping algorithm. Inputs: 1. Complex image in .mat double format 2. Binary mask (optional) Outputs: 1. Unwrapped