how to colored the edge detection result(binary image)?

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EvaUCL
EvaUCL 2016-1-4
回答： Keerthana Goud 2019-8-5
hello everyone, now i'm working with the edge detection of human lungs.i've successfully detected the edge by using 'canny' edge function in matlab. the lungs edge has been extracted too. in this case, the result is a binary image and i do binary inversion then. so the edge line will be black and the background will be white. the question is how to colored the edge line? the code snippet of mine below :
%code BWImage = edge(closeBW,'canny'); IbC = ~im2bw(BWImage, 0.25);
and the result image was attached.
thanks in advance!

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回答（2 个）

David Young
David Young 2016-1-4
You can set the colour map when you display the binary image. For example
img = imread('pout.tif');
imedge = edge(img, 'canny');
imshow(imedge, 'ColorMap', [1 1 1; 0 0 1]);
Displays blue (0,0,1) edges on a white (1,1,1) background. See this description.
Keerthana Goud
Keerthana Goud 2019-8-5
If imedge is the extracted boundary, it can be given color with the following code.
imshow(imedge, 'colormap', [0 0 1; 1 1 1]); Displays blue(0 0 1) edge on white background(1 1 1).

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