Question on "proj_scale" Parameter for Generating Physical Adversarial Patches

[kyrie-louy]

In the process of generating physical adversarial patches that are pasted on the ground, proj_scale is utilized to map a specified location and shape to their counterparts in the scene image. However, in my_config.py, the proj_scale is set to 50, accompanied by the explanation that "50 pixels corresponding to 1m."

How is the value of 50 determined? From my understanding, it should be related to various parameters, such as camera intrinsics/extrinsics, depth, etc.

Thank you for your excellent work, and I would greatly appreciate any information related to this.