how to mask the image and keep only one color "green channel"?
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Oman Wisni
le 25 Sep 2018
Commenté : Oman Wisni
le 27 Sep 2018
Hi, here I have one photo and the code, please anyone help me to fix my code, I want to mask the binary with the RGB.
% Extract the individual red, green and blue color channel
redChannel = hasilcontrast(:,:,1);
greenChannel = hasilcontrast(:,:,2);
blueChannel = hasilcontrast(:,:,3);
% Create the mask
mask = cast(green, class(hasilcontrast));
redmask = redChannel.*mask;
greenmask = greenChannel.*mask;
bluemask = blueChannel.*mask;
% segmentasi
maskRGBimage = cat(3,redmask, greenmask, bluemask);
I not get the result, how I do to show the image. please help me sir
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Image Analyst
le 26 Sep 2018
I've done this so many times I lost track, and some time back decided to make a demo of it. Leaf, fruit, money, handwriting, leaf, fruit, money, handwriting, everyone wants to segment a leaf, fruit, money, or handwriting. Click on the tag "leaf" on the right hand side of this page. See attached demo.
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Image Analyst
le 27 Sep 2018
If you get holes in your leaf, and don't want them, you can call
mask = imfill(mask, 'holes');
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Akira Agata
le 26 Sep 2018
Hi Oman-san,
Thank you for your prompt reply. The following is the code to generate the posted figure. I hope this will be some help for your research!
% Read the image
I = imread('base1.bmp');
% Create a mask based on a green channel of the image
BWmask = ~imbinarize(I(:,:,2));
BWmask = imfill(BWmask,'holes');
% Create a masked RGB image
Imasked = immultiply(I,repmat(BWmask,[1 1 3]));
% Show the results
figure
subplot(2,2,1)
imshow(I)
title('Original','FontSize',12)
subplot(2,2,2)
imshow(BWmask)
title('Mask','FontSize',12)
subplot(2,2,3)
imshow(Imasked)
title('Masked RGB','FontSize',12)
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