what are the preprocessing steps to get a binary Image using OTSU?
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I am able to get a binary image for the attached example by defining threshold manually (trial and error). However, When I use Otsu thresholding, the result is not satisfactory. What pre-prosessing would be useful before I apply OTSU for the attached Image? I also present the result when I use OTSU AS below.
Any other methods to get a binary Image are welcome.
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Image Analyst il 23 Nov 2018
Modificato: Image Analyst il 23 Nov 2018
binaryImage = imbinarize(grayScaleImage);
You can also try my interactive method in my File Exchange.
Or you can try my triangle thresholding method, attached.
You should also do a background correction on the image before using a global threshold. See attached demo.