How to retrieval back the color in particular area from original image?
1 view (last 30 days)
Show older comments
13100.jpg
colorImage = imread('13100.jpg');
grayImage = rgb2gray(colorImage);
mserRegions = detectMSERFeatures(grayImage);
mserRegionsPixels = vertcat(cell2mat(mserRegions.PixelList));
mserMask = false(size(grayImage));
ind = sub2ind(size(mserMask), mserRegionsPixels(:,2), mserRegionsPixels(:,1));
mserMask(ind) = true;
figure;imshow(mserMask);
MSER mask
How to retrieve back the original color from 13100.jpg and paste into MSER mask (white area)?
0 Comments
Accepted Answer
Guillaume
on 17 Mar 2017
Much simpler:
maskedimage = immultiply(colorImage, repmat(mserMask, [1, 1, size(colorImage, 3)]));
imshow(maskedimage);
Note that if you just want to see if your mask is correct
imshowpair(colorImage, mserMask, 'blend');
may be more useful.
3 Comments
Guillaume
on 18 Mar 2017
That's because you're only setting the red plane to 255, leaving the green and blue plane.
whiteMaskedImage(repmat(~mserMask, 1, 1, 3)) = 255;
would fix this.
More Answers (1)
Image Analyst
on 17 Mar 2017
Try bsxfun():
% Mask the image using bsxfun() function
maskedRgbImage = bsxfun(@times, rgbImage, cast(mask, 'like', rgbImage));
See Also
Categories
Find more on Convert Image Type in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!