Subscript indices must either be real positive integers or logicals.

Question

Kiruba Raji.I 2016-8-19

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/300226-subscript-indices-must-either-be-real-positive-integers-or-logicals

编辑： Image Analyst 2016-8-20

Error in imcut NewIm = Image( (cr - 63):(cr + 64),(cc - 63):(cc + 64) );
Error in pcn1 xo = imcut(xr); subplot(6, 3, 3*rt+9*(sc-1)-2), imshow(xo)

pcn1.m

clear,close all,
addpath('functions\');
addpath('images\') 
x = imread('d:\segleaf\i1.jpg');
figure, 
for sc =1:2 
    xs = imresize(x,0.2*sc+0.6);
    for rt = 1:3 
        xr = imrotate(xs,rt*30-30,'bilinear','crop');
        xo = imcut(xr);
        subplot(6, 3, 3*rt+9*(sc-1)-2), 
        imshow(xo) 
        h = imhist(xo);
        subplot(6, 3, 3*rt+9*(sc-1)-1), 
        plot(h), xlim([0, 256]) 
        set(gca,'xtick',[],'xticklabel',[]);
        set(gca,'ytick',[],'yticklabel',[]);
        ts = SCM(xo);
        subplot(6, 3, 3*rt+9*(sc-1)), 
        plot(ts), 
        ylim([0, 5000]) 
        set(gca,'xtick',[],'xticklabel',[]);
        set(gca,'ytick',[],'yticklabel',[]);
    end
end

imcut.m

[r,c] = size(Image);
cc = floor(c/2);
cr = floor(r/2);
NewIm = Image( (cr - 63):(cr + 64),(cc - 63):(cc + 64) );
NewIm=logical(NewIm);

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James Tursa 2016-8-19

This is difficult to read. Can you please format it with the { } Code button to make it readable?

per isakson 2016-8-20

I cannot reproduce the problem you report. See Debug a MATLAB Program

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Answer 1

Walter Roberson 2016-8-20

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/300226-subscript-indices-must-either-be-real-positive-integers-or-logicals#answer_232302

在 MATLAB Online 中打开

You are reading a JPEG. That is highly likely an RGB image rather than a grayscale image. Using

[r,c] = size(Image);

for an RGB image is almost always a mistake.

http://www.mathworks.com/help/matlab/ref/size.html

[d1,d2,d3,...,dn] = size(X), for n > 1, returns the sizes of the dimensions of the array X in the variables d1,d2,d3,...,dn, provided the number of output arguments n equals ndims(X). If n does not equal ndims(X), the following exceptions hold:

n < ndims(X)

di equals the size of the ith dimension of X for 0<i<n, but dn equals the product of the sizes of the remaining dimensions of X, that is, dimensions n through ndims(X).