MATLAB: Index exceeds matrix dimensions.

image cropimage processingrgb image

Dear All,
Good Day to you.I am trying to crop an image using the following method.I want to subdivide an image into components.My code is as follows.| |
a=imread('E:\a1.jpg'); [col row]=size(a); col
col =
   119
row
row =
   345
croped=a(1:119,1:116,:);
  • _??? Index exceeds matrix dimensions.
I get an error message shown above, when try to crop using the above values.And error message is not there for certain values. Please help me to solve this.
Thanks in advance.

Best Answer

Rows is the first index, columns is the second. You had them swapped when you did this:
croped=a(1:119,1:116,:); % col, row instead of row, col like it should be
In addition, you can read about the size function in Steve's blog http://blogs.mathworks.com/steve/2011/03/22/too-much-information-about-the-size-function/, which essentially say what Jan said.
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