计算光流场 optical flow 源码 MATLAB

function [UV] = OpticalFlow（Img1Img2iter_numalpha）
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% This MATLAB codes calculate optical flow of two consecutive frames（images）
% using Horn & Schunck‘s method.
% Input:
%        Img1Img2  :  image data
%        iter_num   :  the time of iteration
%          alpha    :  wighting coefficient
% Author:
%        Huazhong University of Science and Technology
%           Institute of Pattern Recognition and Artificial Intelligence
%               Lee Chi
% Contact me: leechi1010@163.com
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Pre_process
[height_1width_1dim_1] = size（Img1）;
if dim_1 == 3
    Img1 = rgb2gray（Img1）;
end
[height_2width_2dim_2] = size（Img2