Undocumented Parameter th_weight in --vpp-knn

[quamt]

Hello @rigaya,

I’ve been using the --vpp-knn filter for noise reduction and I’ve noticed something potentially missing from the documentation.

While adjusting various settings and observing the output, I came across the th_weight parameter appearing in the output logs, like so:

denoise(knn): radius 5, strength 0.30, lerp 0.50, th_weight 0.01, th_lerp 0.80

However, I couldn’t find any mention of th_weight in the existing documentation.
It appears alongside other parameters which are documented, such as radius, strength, lerp, and th_lerp.

Could you help clarify what th_weight does?
Also, is it something that should be included in the documentation for clarity?

Thank you.

[rigaya]

th_weight is sub paramater of th_lerp, which is a cut-off threshold which weight is taken into accout for th_lerp. Larger th_weight is effectively same as larger th_lerp. Default value has minimum effect.

I don't think it is worth changing it, changing th_lerp shall be enough, but is left for my test purpose.

[quamt]

Thank you for explaining. I will close this issue.