Is c (text condition) needed in namely 'Regularized Forward DDIM'?

[HyeonHo99]

Thank you for great works!

I am thinking of extending your works further. But there's one thing I don't understand clearly from your paper and implementation.
In your paper Figure 3 (the main figure of the procedure), in the Forward part, why is c going to 'Regularized Forward DDIM' as input? Doesn't DDIM forward process usually only adds noise so text condition c is not needed in the process? Can you clarify this part?

Thank you.

[pix2pixzero]

Hi,

Thank you for your interest in this project!
The text conditioning c is going to the Regularized Forward DDIM as input because it is needed to compute how much noise needs to be added (as also shown in equation 1 in our paper).

-Authors