Is it possible to automatic find threshold value?

I'm using this code to segment the leaf, which use fixed thresholds that work very well for the first image, but it don't work for the second one.

Is it possible to analyse the image and find out the best thresholds to use?

Thank you!

Answer 1

[Stephen Devlin]

Hi Tarcisio,

Maybe this helps?

https://uk.mathworks.com/matlabcentral/answers/73864-histogram-thresholding-to-get-the-threshold-point