frozenburning / relighting4d Goto Github PK

I directly download your code and run them. However, the process seems to stay at this line

Hello ! Thank you for your amazing work.

I see you are adding torch.ones to the light on the following light if "fix_light" is set to True.

Why is it there and isn't this going to make the new light brighter than it should ?

Hi Zhaoxi,
Thanks for the great work. I want to konw how to change the background with different HDR image, and the result like your video!

Hello again :)

I am looking into the BRDF you are using.

Why is alpha = roughness squared (gamma(x) ^2) in your work ?

The original paper https://www.graphics.cornell.edu/~bjw/microfacetbsdf.pdf
just takes alpha values without squaring them.

Is it just a way to remove negative roughness when training ?

Hi Zhaoxi,
Thanks for your great work!
It seems like zju-mocap and people-snapshot use different light settings. I'm confused about that, could you please explain that?

if 'xyzc' in cfg.exp_name or 'zju' in cfg.exp_name:
            print("zju-mocap:{}, using different lighting......".format(cfg.exp_name))
            lxyz[...,1] = -lxyz[...,1]
            lxyz[...,0] = -lxyz[...,0]
        else:
            lxyz = lxyz[..., [0, 2, 1]]
            lxyz[...,1] = -lxyz[...,1]

If I wanna train the model on my own dataset, which one should I choose?
Thanks in advance!

How to get the geometry and reflectance decomposition results on the Blender with self-build BlenderHuman dataset.

Hi, i downloaded some hdr from poly heaven. But i find some differences between the hdr downloaded and the hdr provided. The max value of the sunset i download is about 30000, but the provide hdr is about 80. Is there any pre-process while dealing with the new hdr map?

Thank you for your amazing work again! @FrozenBurning
I have another question regarding relighting the model from a novel camera view. I noticed that I can only relight the model from the camera used to train. If I want to relight the model from a novel camera view, what should I do? Could you please provide me with some advice? Thank you very much!

I met an trouble when rendering

Can you support to me?

We use blender and smpl-x self-built dataset and how to get, Normal, Occlusion, Diffuse, Specular informations.

Hi Zhaoxi,
Thanks for the great work.
It seem that the code and configuration files to handle multi-view data like ZJU Mocap are missing now, will they be released as well?

Thank you very much for your great work! @FrozenBurning
I am trying to train the model using the custom dataset provided in the SynthesisHuman Dataset. As shown in the README.md file in the custom folder, I can ' export the SMPL parameters and SMPL vertices to two directories: params and vertices'. I already have the 'model.npz' file containing the SMPL parameters, which contains the following keys: minimal_shape, betas, Jtr_posed, bone_transforms, trans, root_orient, pose_body, pose_hand. However, I do not know how to export the SMPL parameters or vertices from this file. Could you please give me some hints to export the corresponding parameters?
Thank you very much!

Hello, happy for your good job. I have a question if only training in single view video, the camera pose ωo is fixed. Therefore, I can only relight human in one camera pose ωo.