Earlier quoted context omitted.
I have no idea but I think you might be onto something. So you're saying that, if I can calculate from the picture the position (height, inclination and such), and I can render the model (should be doable) for that height and angle, my best course of action could be to combine original + render and only at the end use a visual model? That could be interesting.
More-less, yes. I was actually thinking about taking a high-resolution rendering of an awning directly facing the camera, and transforming that quad onto the user image - which requires computing the transformation matrix that would right the user image so the building is level and directly facing the camera, and then applying the inverse of that to the quad with your rendering - but I now realize I assumed user phot…
By the way I have a tried a handful of NB2 queries providing a reference image of the awning and of a user uploaded garden-facing building and I was very impressed by the results, I think that combining a 3d render at the right angle of the awning + NB 2 should do great.
Thanks a lot for your help, your feedback has been crucial! Dziekuje!