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.
采纳的回答
% - 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?
更多回答（1 个）
Image Analyst
2013-10-10
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 个评论
Cedric
2013-10-10
I didn't know IMCLEARBORDER, thank you for the update!
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