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Index exceeds matrix dimensions.

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Dani D
Dani D 2016-11-18
关闭： MATLAB Answer Bot 2021-8-20
Hello, I have an error :( Index exceeds matrix dimensions.
clc;
clear;
close all;
I = imread('C:\Users\Pictures\sgs.jpg');
I = rgb2gray(I);
[m , n ] = size(I);
MaxI = 0;
for i = 1:n
for j = 1:m
if (I(i,j) > MaxI)
MaxI = I(i,j);
end
end
end

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Adam
Adam 2016-11-18
[m , n ] = size(I);
gives you the number of rows and columns in m and n respectively.
You then loop i up to n and j up to m, but use
I(i,j)
which is switching round the rows with the columns so unless you have a square image you will see this error.

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