Search Results for author: Fangcheng Zhong

Found 8 papers, 2 papers with code

Differentiable Visual Computing for Inverse Problems and Machine Learning

no code implementations21 Nov 2023 Andrew Spielberg, Fangcheng Zhong, Konstantinos Rematas, Krishna Murthy Jatavallabhula, Cengiz Oztireli, Tzu-Mao Li, Derek Nowrouzezahrai

This approach is predicated by neural network differentiability, the requirement that analytic derivatives of a given problem's task metric can be computed with respect to neural network's parameters.

FrePolad: Frequency-Rectified Point Latent Diffusion for Point Cloud Generation

no code implementations20 Nov 2023 Chenliang Zhou, Fangcheng Zhong, Param Hanji, Zhilin Guo, Kyle Fogarty, Alejandro Sztrajman, Hongyun Gao, Cengiz Oztireli

We propose FrePolad: frequency-rectified point latent diffusion, a point cloud generation pipeline integrating a variational autoencoder (VAE) with a denoising diffusion probabilistic model (DDPM) for the latent distribution.

Computational Efficiency Denoising +1

ARF-Plus: Controlling Perceptual Factors in Artistic Radiance Fields for 3D Scene Stylization

no code implementations23 Aug 2023 Wenzhao Li, Tianhao Wu, Fangcheng Zhong, Cengiz Oztireli

We highlight a research gap in radiance fields style transfer, the lack of sufficient perceptual controllability, motivated by the existing concept in the 2D image style transfer.

3D Reconstruction Style Transfer

$α$Surf: Implicit Surface Reconstruction for Semi-Transparent and Thin Objects with Decoupled Geometry and Opacity

no code implementations17 Mar 2023 Tianhao Wu, Hanxue Liang, Fangcheng Zhong, Gernot Riegler, Shimon Vainer, Cengiz Oztireli

While neural radiance field (NeRF) based methods can model semi-transparency and achieve photo-realistic quality in synthesized novel views, their volumetric geometry representation tightly couples geometry and opacity, and therefore cannot be easily converted into surfaces without introducing artifacts.

Surface Reconstruction

D$^2$NeRF: Self-Supervised Decoupling of Dynamic and Static Objects from a Monocular Video

no code implementations31 May 2022 Tianhao Wu, Fangcheng Zhong, Andrea Tagliasacchi, Forrester Cole, Cengiz Oztireli

We introduce Decoupled Dynamic Neural Radiance Field (D$^2$NeRF), a self-supervised approach that takes a monocular video and learns a 3D scene representation which decouples moving objects, including their shadows, from the static background.

Image Segmentation Semantic Segmentation +1

Noise-Aware Merging of High Dynamic Range Image Stacks without Camera Calibration

1 code implementation16 Sep 2020 Param Hanji, Fangcheng Zhong, Rafal K. Mantiuk

A near-optimal reconstruction of the radiance of a High Dynamic Range scene from an exposure stack can be obtained by modeling the camera noise distribution.

Camera Calibration

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