How to represent the value of X and Y Pixels in array of Two Dimensions using Matlab

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Lakshya
Lakshya on 15 Sep 2014
Commented: Lakshya on 17 Sep 2014
Hi , Suppose if this is my image
I need to find the x, y coordinates of white pixels in image. I am getting the value of x and y coordinates separately one after the other, i want to represent it in 2 dimensional array matrix like [x,y] ,how can i represent it in 2 D matrix?
Then i need to calculate the farthest distance in that box ? how to solve this?

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Accepted Answer

Youssef Khmou
Youssef Khmou on 15 Sep 2014
The provided answer is correct, you only need some processing steps, the image contains white borders , you need to crop it using some software, after that, you need to convert into grayscale and then to double instead of unit8 :
X=rgb2gray(X);
X=im2double(X);
% then the command provided above.
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Youssef Khmou
Youssef Khmou on 16 Sep 2014
x(1,:) means the x,y coordinates of the 1st point, but y(:,1) is the x coordinates of all points, that is where you get the error, the distance between the x and y points is sqrt((M(x,1)-M(y,1))^2-(M(x,2)-M(y,2))^2)

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