Differentiable Rendering of Neural SDFs through Reparameterization
Differentiable Rendering of Neural SDFs through Reparameterization
复制标题
通过重新参数化进行神经 SDF 的可微渲染
DOI:
10.1145/3550469.3555397
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发表时间:
2022
影响因子:
6.2
通讯作者:
Durand, Fredo
中科院分区:
文献类型:
--
作者:
Bangaru, Sai Praveen;Gharbi, Michael;Luan, Fujun;Li, Tzu-Mao;Sunkavalli, Kalyan;Hasan, Milos;Bi, Sai;Xu, Zexiang;Bernstein, Gilbert;Durand, Fredo
We present a method to automatically compute correct gradients with respect to geometric scene parameters in neural SDF renderers. Recent physically-based differentiable rendering techniques for meshes have used edge-sampling to handle discontinuities, particularly at object silhouettes, but SDFs do not have a simple parametric form amenable to sampling. Instead, our approach builds on area-sampling techniques and develops a continuous warping function for SDFs to account for these discontinuities. Our method leverages the distance to surface encoded in an SDF and uses quadrature on sphere tracer points to compute this warping function. We further show that this can be done by subsampling the points to make the method tractable for neural SDFs. Our differentiable renderer can be used to optimize neural shapes from multi-view images and produces comparable 3D reconstructions to recent SDF-based inverse rendering methods, without the need for 2D segmentation masks to guide the geometry optimization and no volumetric approximations to the geometry.
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DOI:
--
发表时间:
2021
期刊:
IEEE International Conference on Computer Vision
影响因子:
--
作者:
Forrester Cole;Kyle Genova;Avneesh Sud;Daniel Vlasic;Zhoutong Zhang
通讯作者:
Zhoutong Zhang
影响因子:
6.2
作者:
Lombardi, Stephen;Simon, Tomas;Sheikh, Yaser
通讯作者:
Sheikh, Yaser
DOI:
10.1145/192161.192250
发表时间:
1994-07
期刊:
Proceedings of the 21st annual conference on Computer graphics and interactive techniques
影响因子:
--
作者:
James Arvo
通讯作者:
James Arvo
DOI:
10.1109/cvpr46437.2021.00541
发表时间:
2021-04
期刊:
2021 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
影响因子:
--
作者:
Kai Zhang;Fujun Luan;Qianqian Wang;Kavita Bala;Noah Snavely
通讯作者:
Kai Zhang;Fujun Luan;Qianqian Wang;Kavita Bala;Noah Snavely
DOI:
10.1145/3476576.3476672
发表时间:
2021
期刊:
ACM Transactions on Graphics (TOG)
影响因子:
--
作者:
Delio Vicini;Sébastien Speierer;Wenzel Jakob
通讯作者:
Wenzel Jakob