资源简介
经典的光流计算,用matlab编写的程序,希望对学习者有所帮助
代码片段和文件信息
function [usvs] = HSoptflow(Xrgbn)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Author: Gregory Power gregory.power@wpafb.af.mil
% This MATLAB code shows a Motion Estimation map created by
% using a Horn and Schunck motion estimation technique on two
% consecutive frames. Input requires.
% Xrgb(hwdN) where X is a frame sequence of a certain
% height(h) width (w) depth (d=3 for color)
% and number of frames (N).
% n= is the starting frame number which is less than N
% V= the output variable which is a 2D velocity array
%
% Sample Call: V=HSoptflow(X3);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
[hwdN]=size(Xrgb)
if n>N-1
error(1‘requested file greater than frame number required‘);
end;
%get two image frames
if d==1
Xn=double(Xrgb(::1n));
Xnp1=double(Xrgb(::1n+1));
elseif d==3
Xn=double(Xrgb(::1n)*0.299+Xrgb(::2n)*0.587+Xrgb(::3n)*0.114);
Xnp1=double(Xrgb(::1n+1)*0.299+Xrgb(::2n+1)*0.587+Xrgb(::3n+1)*0.114);
else
error(2‘not an RGB or Monochrome image file‘);
end;
%get image size and adjust for border
size(Xn)
hm5=h-5; wm5=w-5;
z=zeros(hw); v1=z; v2=z;
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