Hi Nicolas, I made an attempt with Advanced Weka Segmentation plugin:
-find attached the segmentation after manual classification of the animal "Probability_maps-1";
-the second picture is an attempt of simulating different animals "PICT0746-mod";
-the third picture shows the application of the same classifier to the modified picture, as you can see, the identical copies of animal are found, but if brightness changes (like I guess for other photos under different illumination conditions), things become difficult...
You should try to segment several pictures, let me know if it works.
Best regards,
Rocco
Senior Microscopist
Crick Advanced Light Microscopy facility (CALM)
The Francis Crick Institute
1 Midland Road, NW1 1AT, London (UK)
https://roccodant.github.io/