How to use recon

[angelabr]

Hi, I don't understand what is the purpose of recon of the liveness image, is it possible or can it be used to obtain kind of a numerical output that states whether an image is live or spoof?

[CHELSEA234]

@angelabr
I am sorry for the late response. We want to obtain the trace by subtracting a spoof image and its corresponding live image. However, we do not have the corresponding live image, so we use recon to micmic the corresponding live image. This imitation is the purpose to have recon.

[tangwudu]

Then how can we use the recon and d_total_loss for live and spoof classification?

[tangwudu]

I think I have found it. Can refer to source_SiW_Mv2/inference.py for final score and decision.

[tangwudu]

But may need some adjustment with the hyper parameters.