How does SMPL UV map turn into BF(boundry-free) UV map ？

[GuiZhaoyang]

Hi，

Thank you for such a great job. I am very interested in the new UV map you have proposed. I want to know how SMPL UV map can be converted to this BF UV map.

Thanks.

[zengwang430521]

Hi,
I'm sorry that I did not notice this issue in time.
Actually, we didn't write the code to convert the IUV image from SMPL UV map to BF UV map. When preparing the training data, we rendered two kinds of IUV images respectively.

[GuiZhaoyang]

Thanks,

Any suggestions for converting the IUV image from SMPL UV map to BF UV map?

[zengwang430521]

Hi, You may use the mesh as a intermediate representation. 1. Determine the correspondence between mesh faces in SMPL UV and BF UV. 2. For a point (u1, v1) in SMPL UV space, find which face it is inside and compute the interpolate weight in the triangle. 3. Use the texture face in BF UV and the interpolate weight to get coordinate in BF UV map. I recommend you to compute a look up table in advance and then use the table to realize such converting process. Could you please tell me why you need to convert the IUV images? Best, Wang ZhaoyangGui ***@***.***> 于2021年9月28日周二 上午10:13写道：

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