code for horizontal projection profile of an image
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hello friends, to perform skew detection and correction, iam using horizontal projection profile. so i need the code for horizontal projection profile to segment lines and i need the code for horizontal projection profile of each word, for image containing handwritten characters.
1 Comment
Oleg Komarov
on 6 Aug 2012
Please review these guidelines and ask a specific question: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer
Answers (4)
Image Analyst
on 6 Aug 2012
First pick an algorithm from section 23 of the Vision Bibliography: http://iris.usc.edu/Vision-Notes/bibliography/contents.html. Then come back here with your MATLAB coding questions.
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luong v
on 2 Dec 2015
Edited: luong v
on 2 Dec 2015
Hi every one, I have a license plate, now I want to use horizontal projection to segment the license plate into two lines. Please help me, Thanks you
1 Comment
Image Analyst
on 2 Dec 2015
verticalProjection = mean(grayImage, 2);
horizontalProjection = mean(grayImage, 1);
Rujal
on 22 Jan 2016
how to plot horizontal projection horizontally ? I didn't get idea.
5 Comments
Image Analyst
on 23 Jan 2016
But what if, in handwriting, descenders in one row dip below some risers in the row below? Those two rows would not be detected as two rows with any(). And with sum() and mean(), the descenders would get clipped. So to be really robust, you'd need something more sophisticated than these simple functions. But I can't spend the time to develop a robust OCR program for anyone.
Walter Roberson
on 23 Jan 2016
You need the ascenders and descenders for proper classification of the characters. Horizontal projection is simply not sufficient for the case where you do not have clean separation between the lines.
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