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我有以下函数计算 GLCM，然后计算给定的统计参数。我想将此函数传递给 NLFILTER 来计算整个图像（在小窗口中，例如卷积）。我已经将 NLFILTER 设置为使用并行计算工具箱运行，所以我真的很想转换下面的函数：

function [s]=glcm(img,meth)
%GLCM calculates a Gray Level Co-occurence matrix & stats for a given sub
% image.
% Input: Sub Image (subI) and a method (meth)...
%        'Contrast','Correlation','Energy','Homogeneity'
%

subI=uint8(img);
m=graycomatrix(img,'Offset',[0 1],'NumLevels',8,'Symmetric',true);

if meth(1:3)=='con'
    s=graycoprops(m,'Contrast');
    s=s.Contrast;
elseif meth(1:3)=='cor'
    s=graycoprops(m,'Correlation');
    s=s.Correlation;
elseif meth(1:3)=='ene'
    s=graycoprops(m,'Energy');
    s=s.Energy;        
elseif meth(1:3)=='hom'
    s=graycoprops(m,'Homogeneity');
    s=s.Homogeneity;
else
    error('No method selected.')
end

我真的很困惑如何将其转换为适合与 NLFILTER 一起使用的函数句柄。有任何想法吗？谢谢。

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1 回答 1

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创建匿名函数时，可以在函数定义中传递额外的静态参数：

%# define the method
method = 'ene';

%# create an anonymous function that takes one input argument
%# and that passes the `method` defined above
%# as an argument to glcm
anonFcn = @(x)glcm(x,method);

%# apply to your image with whatever window size you're interested in
out = nlfilter(yourImage,windowSize,anonFcn)
于 2011-11-07T12:38:01.107 回答