Detect edge and remove it
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I need to combine the black and white colour together and left this picture with only the words and number.. can anyone show me on the right approach to solve this problem.
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Cedric
le 10 Oct 2013
Modifié(e) : Cedric
le 10 Oct 2013
% - Read RGB image and convert to BW.
BW = im2bw( imread( 'TEST_7.jpg' )) ;
% - Build vectors of logicals targeting all-black rows/cols.
colId = ~sum( BW, 1 ) ;
rowId = ~sum( BW, 2 ) ;
% - Make them all white.
BW(:,colId) = 1 ;
BW(rowId,:) = 1 ;
% - Show result.
imshow(BW)
Is it what you are trying to achieve?
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Image Analyst
le 10 Oct 2013
You can simply do this:
binaryImage = imclearborder(~binaryImage);
This gives white letters on a black background (what is needed for most subsequent operations). Invert it if you want black letters on a white background.
binaryImage = ~imclearborder(~binaryImage);
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