how to segment form?

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lamghari
lamghari 2014-11-27
评论： lamghari 2014-11-29
I have a form table that contains characters. how to extract these characters?
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Thorsten
Thorsten 2014-11-28
编辑：Thorsten 2014-11-28
What do you mean by "extract these characters"? Select the images of the characters or do an OCR (optical character recognition) or something else?
lamghari
lamghari 2014-11-28
select the images of the characters

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Image Analyst
Image Analyst 2014-11-28
First I'd sum the image vertically and horizontally and look for the rows and columns where the grid lines are. Then call imcrop.
[rows, columns, numberOfColorChannels) = size(grayImage);
horizontalProfile = sum(grayImage, 1);
verticalProfile = sum(grayImage, 2);
binaryHoriz = horizontalProfile < someNumber;
and so on. Give it a try.
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Image Analyst
Image Analyst 2014-11-29
Plot the profiles and you'll be able to tell what the number is. It might be like half the max value or something.
lamghari
lamghari 2014-11-29
ok thank you very much

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