Can I extract brown lines from one image?
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Kwanghun Choi
il 18 Ott 2017
Risposto: Image Analyst
il 19 Ott 2017
Hello! :)
I have to extract brown lines from one image(=topographic map). Line are curved and RGB information is like
Red : 187 Green : 172 Blue : 158 .
How can I input that color value into matlab? And how can I extract the line?
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Cam Salzberger
il 18 Ott 2017
What format do you want the line to be "extracted" in? Do you want a binary mask indicating the position of the line? Do you want the indices of the line pixels? Do you want the start and endpoints of the line?
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Image Analyst
il 19 Ott 2017
Try this:
% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1);
greenChannel = rgbImage(:, :, 2);
blueChannel = rgbImage(:, :, 3);
% Find brown pixels.
mask = redChannel == 187 & greenChannel == 172 & blueChannel == 158;
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