how to make a light color features to become bright?
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good day i have an image with extracted blood vessels and with no noise and a complete figure with all vessels in it..but some of my vessels are light in color..is there a way to make it dark.my image is..
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/153708/image.jpeg)
expected output image is (this is image is a manualy drawn image form DRIVE data set
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/153709/image.jpeg)
original vessels are
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/153710/image.jpeg)
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Image Analyst
2013 年 12 月 16 日
grayImage(binaryImage) = 0; % Set white pixels to black.
grayImage(binaryImage) = 0.5 * grayImage(binaryImage); % Set white pixels to half intensity.
8 件のコメント
Image Analyst
2013 年 12 月 24 日
I don't have any way of making the super faint vessels get detected, but I'm pretty sure it has been done before. If you go to section 20.5 here http://iris.usc.edu/Vision-Notes/bibliography/contentsmedical.html#Medical%20Applications,%20CAT,%20MRI,%20Ultrasound,%20Heart%20Models,%20Brain%20Models you will find lots of papers on that. There are plenty of spatial filters and ridge/valley detectors that could work, and I'm sure some of the papers have algorithm specialized for fundus images.
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