We will be adding confidence in metadata on DS 5.0 recently.
If you cannot wait the new DS version, you need to modify the source code to achieve you goal.
- refer nvinfer is not populating 'confidence' field in NvDsObjectMeta (DS 4.0) - #20 by CJR to set the confidence value in meta data.
2.if you want to display confidence using OSD, U can modify gstnvinfer_meta_utils.cpp and modify the label that we set in function attach_metadata_detector , you can append confidence value as string along with the class string.