Detect edge and remove it
1 view (last 30 days)
Show older comments
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.
0 Comments
Accepted Answer
Cedric
on 10 Oct 2013
Edited: Cedric
on 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?
More Answers (1)
Image Analyst
on 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);
2 Comments
See Also
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!