How to remove the found image from the original image?

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ZWY 2022-6-3

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https://ww2.mathworks.cn/matlabcentral/answers/1732840-how-to-remove-the-found-image-from-the-original-image

评论： ZWY 2022-6-5

Hi, I am a beginner to MATLAB image processing.

I have an original fundus image as shown. And i have found the vessel tree as attached which I need to remove from the fundus image.

My question is how can I remove the vessel tree from the original image?

Thank you.

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采纳的回答

Image Analyst 2022-6-3

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https://ww2.mathworks.cn/matlabcentral/answers/1732840-how-to-remove-the-found-image-from-the-original-image#answer_977985

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You can invert the mask to get everything except the vessels, then mask:

% Get fundus mask, which is the opposite of the vessel mask
mask = ~vesselMask;
% Mask image by multiplying each channel by the mask.
maskedRgbImage = rgbImage .* cast(mask, 'like', rgbImage); % R2016b or later. Works for gray scale as well as RGB Color images.
% For R2016a or earlier, mask the image using bsxfun() function to multiply the mask by each channel individually.  Works for gray scale as well as RGB Color images.
% maskedRgbImage = bsxfun(@times, rgbImage, cast(mask, 'like', rgbImage)); % R2016a or earlier.