Active contours image segmentation
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using active contours i segmented a area in an image shown below
now how to extract the segmented area??
回答（1 个）
Image Analyst
2014-4-30
0 个投票
activecontour() returns a binary image that is the segmentation. Now describe very exactly what you mean by "extract". Does that mean measure with regionprops()? Does that mean cropping to a new, smaller image with imcrop()? "Extract" is not a very specific term. What does it mean to you?
4 个评论
scorpio 09
2014-5-1
for example below figure shows the active contour detected region..
now i want to extract that detected region as shown below
i used imcrop() but the result is not correct
Image Analyst
2014-5-1
Again, "activecontour() returns a binary image" so I don't understand why you're asking. It gives it to you!
Image Analyst
2021-2-2
If you want to mask the original image, no matter whether gray scale or RGB, you can use this code:
% Mask the image using bsxfun() function to multiply the mask by each channel individually.
% Works for gray scale as well as RGB Color images.
maskedImage = bsxfun(@times, rgbImage, cast(mask, 'like', rgbImage));
If you have a gray scale image, you can also multiply:
maskedImage = grayImage .* uint8(mask); % or uint16
or you can erase using logical coordinates:
maskedImage = grayImage; % Initialize
maskedImage(~mask) = 0; % Erase outside the mask.
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2014-4-30
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