Very Bad Bounding Boxes After Quantization of Model

[hx89]

Seems it’s the same topic as another thread where we are helping on debugging:

Quantization Error During Concat -- RuntimeError: Didn't find kernel to dispatch to for operator 'aten::_cat'

thanks @hx89 , if you could post that example for compare module level quantization error - It would be great In the meantime, I tried the histogram observer and the result is still pretty bad [image] any other suggestions ?