Hello Nifissa, Otsu's method assumes two classes and thus a bimodal histogram, and calculates the optimal threshold based on that assumption. You can find more information about the method here <https://en.wikipedia.org/wiki/Otsu%27s_method>. I have used it successfully for binary classification problems. If you are unsure of which method to use for binarizing the image you can try a python function <http://scikit-image.org/docs/dev/auto_examples/segmentation/plot_thresholding.html> that does exactly that. Hope that helps :-)
Liten On Mon, Apr 1, 2019 at 9:06 AM Nafissa Sfaksi <[email protected]> wrote: > Hello every body, > > I have several images taken under different conditions (incdence angle, > soil moisture, cloud cover... ) and I want to classify the images in 3 > classes using a threshold function. > > As my images are taken in different seasons, i want to use otsu Methode to > find the most adequate treshold. > > I saw that OTB software C++ used the itk library to process the > thresholding. but i dont find the function in the OTB application. > > Is it possible to help me finding the function or how to call it in a > python script (I do not use c++, I am not an advenced user!) > > Thank you for any help. > Best regards > > Nafissa > > -- > This mailing will be abandoned soon in favor of a more friendly forum: > https://forum.orfeo-toolbox.org > Thanks to visit it for any question related to Orfeo Toolbox (OTB) usage, > or to check the OTB FAQ: > http://www.orfeo-toolbox.org/FAQ.html > --- > You received this message because you are subscribed to the Google Groups > "otb-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- This mailing will be abandoned soon in favor of a more friendly forum: https://forum.orfeo-toolbox.org Thanks to visit it for any question related to Orfeo Toolbox (OTB) usage, or to check the OTB FAQ: http://www.orfeo-toolbox.org/FAQ.html --- You received this message because you are subscribed to the Google Groups "otb-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
