Image processing for a set of images but showing "Array indices must be positive integers or logical values" for another set of images?
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Yuhong Jin
le 24 Nov 2019
Commenté : Walter Roberson
le 25 Nov 2019
I made an image processing script which can work for a set of images, but when I try to process another set of images with the same script, it shows errors saying "Array indices must be positive integers or logical values".
Could anyone help me with this please?
Array indices must be positive integers or logical values.
Error in training (line 16)
mean5=mean(double(A3(:)<1500))
This is my code:
%read images
A=imread('r30jun97.giant.04--1---2.tif');
%increase intensity
A1 = A*1000;
%mask
mask = A1>=2000;
A2 = uint16(mask).*A1;
%median filter to remove noise
meanFilter = ones(3)/9;
A3 = imfilter(A2,meanFilter);
%statistics
mean5=mean(double(A3(:)<1500));
sd5=sqrt(var(double(A3(:)<1500)));
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Walter Roberson
le 24 Nov 2019
Guessing
mask = A3<1500;
mean5 = mean(A3(mask));
sd5 = std(A3(mask)) ;
However you should check whether you accidentally created a variable named mean
4 commentaires
Walter Roberson
le 25 Nov 2019
In that case the code I posted above would work. Or you might prefer to write it as
A3_5 = A3(A3<1500);
mean5 = mean(A3_5);
sd5 = std(A3_5);
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