Hi @mo_t1, it looks like your model has two classes it has trouble differentiating between.
I recommend implementing Active Learning and taking more examples of the PKS and RPG classes, as well as this example image, and from there:
- upload them to Roboflow
- Annotate the images
- Generate a new version of your dataset
- Retrain your model
- Retest your model on a similar image, and more images, and repeat the process to root out errors and raise the confidence level on all detections