• In typical face anonymization use cases, the camera typically is stably mounted to view a scene.
• Minimizing false negatives is more important than false positives since anonymization takes higher preference. Therefore, selection of lower --thresh value is preferable.
• Variable lighting conditions also generate false positives which are unrealistic to the scene.

Solution

• Implement --scorethresh that can be tuned to throw out masks with lower scores.
• Implement --scalelim that can be tuned to throw out masks unrealistically large for the scene in consideration.