032_FaceMesh Score Normalization

[cogency]

Issue Type

Bug

OS

Windows

OS architecture

x86_64

Programming Language

Python

Framework

ONNX

Model name and Weights/Checkpoints URL

face_mesh_192x192_post.onnx

Description

I noticed the score output from FaceMesh is coming out as a logit, but the example video processing code referred to in:
https://github.com/PINTO0309/facemesh_onnx_tensorrt/blob/main/demo_video.py
uses it like a probability. This means that the threshold being applied will almost always pass since the positive logit will generally be larger than 1.0.

Solution: score needs to be converted to probability before being compared to threshold, i.e.
scoreProb = exp(score)/(1+exp(score))

It might be worth adding a note to the README.

Relevant Log Output

No response

URL or source code for simple inference testing code

No response