How to find out height of the charcter image where the pixel value not wqual to zero?

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Minu
Minu 2013-6-11
Hi
How to find the minimum and maximum position of pixel value that is not equal to zero? ie, I want to find out height of the character image when we segment the image into lines.How to solve this.Help me please...

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Matt J
Matt J 2013-6-11
编辑：Matt J 2013-6-11
[i,~]=find(image);
height = min(i)-max(i) + 1;

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