Hi Mylene,
Thanks for provided data so i can replicate your problem.
I fixed your protocol :Convexify does not work on very small ROI (<= 4 pixels) so i just added filtering to remove them.
You'll find it attached to the message, now it should work :)
About the connected component, i think you don't need it anymore as Spot Detector is now directly outputting ROI objects.
And indeed there is a sale issue with the ROI generated from Convexify, we will investigate it and fix it asap (the plugin will be updated automatically when it will be done). Hopefully this is just visual, quantification made from these ROIs are still corrects.
Best,
- Stephane