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Existing approaches to system identification (estimating the physical parameters of an object) from videos assume known object geometries. This precludes their applicability in a vast majority of scenes where object geometries are complex…

Computer Vision and Pattern Recognition · Computer Science 2023-03-10 Xuan Li , Yi-Ling Qiao , Peter Yichen Chen , Krishna Murthy Jatavallabhula , Ming Lin , Chenfanfu Jiang , Chuang Gan

We introduce a technique for pairwise registration of neural fields that extends classical optimization-based local registration (i.e. ICP) to operate on Neural Radiance Fields (NeRF) -- neural 3D scene representations trained from…

Computer Vision and Pattern Recognition · Computer Science 2022-11-04 Lily Goli , Daniel Rebain , Sara Sabour , Animesh Garg , Andrea Tagliasacchi

We present Block-NeRF, a variant of Neural Radiance Fields that can represent large-scale environments. Specifically, we demonstrate that when scaling NeRF to render city-scale scenes spanning multiple blocks, it is vital to decompose the…

Computer Vision and Pattern Recognition · Computer Science 2022-02-11 Matthew Tancik , Vincent Casser , Xinchen Yan , Sabeek Pradhan , Ben Mildenhall , Pratul P. Srinivasan , Jonathan T. Barron , Henrik Kretzschmar

Recent research explosion on Neural Radiance Field (NeRF) shows the encouraging potential to represent complex scenes with neural networks. One major drawback of NeRF is its prohibitive inference time: Rendering a single pixel requires…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Huan Wang , Jian Ren , Zeng Huang , Kyle Olszewski , Menglei Chai , Yun Fu , Sergey Tulyakov

Physically-based rendering (PBR) is key for immersive rendering effects used widely in the industry to showcase detailed realistic scenes from computer graphics assets. A well-known caveat is that producing the same is computationally heavy…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Jing Yang , Hanyuan Xiao , Wenbin Teng , Yunxuan Cai , Yajie Zhao

Applying NeRF to downstream perception tasks for scene understanding and representation is becoming increasingly popular. Most existing methods treat semantic prediction as an additional rendering task, \textit{i.e.}, the "label rendering"…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Hao Li , Dingwen Zhang , Yalun Dai , Nian Liu , Lechao Cheng , Jingfeng Li , Jingdong Wang , Junwei Han

Since the advent of Neural Radiance Fields, novel view synthesis has received tremendous attention. The existing approach for the generalization of radiance field reconstruction primarily constructs an encoding volume from nearby source…

Computer Vision and Pattern Recognition · Computer Science 2023-08-09 Jingliang Li , Qiang Zhou , Chaohui Yu , Zhengda Lu , Jun Xiao , Zhibin Wang , Fan Wang

We propose Multi-spectral Neural Radiance Fields(Spec-NeRF) for jointly reconstructing a multispectral radiance field and spectral sensitivity functions(SSFs) of the camera from a set of color images filtered by different filters. The…

Image and Video Processing · Electrical Eng. & Systems 2023-10-23 Jiabao Li , Yuqi Li , Ciliang Sun , Chong Wang , Jinhui Xiang

In this paper, we propose SpectralNeRF, an end-to-end Neural Radiance Field (NeRF)-based architecture for high-quality physically based rendering from a novel spectral perspective. We modify the classical spectral rendering into two main…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Ru Li , Jia Liu , Guanghui Liu , Shengping Zhang , Bing Zeng , Shuaicheng Liu

Neural Radiance Field (NeRF) has emerged as a compelling method to represent 3D objects and scenes for photo-realistic rendering. However, its implicit representation causes difficulty in manipulating the models like the explicit mesh…

Computer Vision and Pattern Recognition · Computer Science 2022-10-14 Jiaxiang Tang , Xiaokang Chen , Jingbo Wang , Gang Zeng

The recent popular radiance field models, exemplified by Neural Radiance Fields (NeRF), Instant-NGP and 3D Gaussian Splatting, are designed to represent 3D content by that training models for each individual scene. This unique…

Computer Vision and Pattern Recognition · Computer Science 2024-10-31 Weihang Liu , Xue Xian Zheng , Jingyi Yu , Xin Lou

We present DietNeRF, a 3D neural scene representation estimated from a few images. Neural Radiance Fields (NeRF) learn a continuous volumetric representation of a scene through multi-view consistency, and can be rendered from novel…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Ajay Jain , Matthew Tancik , Pieter Abbeel

In rapidly-evolving domains such as autonomous driving, the use of multiple sensors with different modalities is crucial to ensure high operational precision and stability. To correctly exploit the provided information by each sensor in a…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Quentin Herau , Nathan Piasco , Moussab Bennehar , Luis Roldão , Dzmitry Tsishkou , Cyrille Migniot , Pascal Vasseur , Cédric Demonceaux

In the field of monocular 3D detection, it is common practice to utilize scene geometric clues to enhance the detector's performance. However, many existing works adopt these clues explicitly such as estimating a depth map and…

Computer Vision and Pattern Recognition · Computer Science 2023-09-27 Junkai Xu , Liang Peng , Haoran Cheng , Hao Li , Wei Qian , Ke Li , Wenxiao Wang , Deng Cai

Despite remarkable progress in image translation, the complex scene with multiple discrepant objects remains a challenging problem. The translated images have low fidelity and tiny objects in fewer details causing unsatisfactory performance…

Computer Vision and Pattern Recognition · Computer Science 2022-12-26 Liyun Zhang , Photchara Ratsamee , Bowen Wang , Zhaojie Luo , Yuki Uranishi , Manabu Higashida , Haruo Takemura

Neural Radiance Field (NeRF) is a popular method in representing 3D scenes by optimising a continuous volumetric scene function. Its large success which lies in applying volumetric rendering (VR) is also its Achilles' heel in producing…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Zhe Jun Tang , Tat-Jen Cham , Haiyu Zhao

We address the problem of photorealistic 3D face avatar synthesis from sparse images. Existing Parametric models for face avatar reconstruction struggle to generate details that originate from inputs. Meanwhile, although current NeRF-based…

Computer Vision and Pattern Recognition · Computer Science 2023-06-27 Weichen Zhang , Xiang Zhou , Yukang Cao , Wensen Feng , Chun Yuan

We propose the NeRF-LEBM, a likelihood-based top-down 3D-aware 2D image generative model that incorporates 3D representation via Neural Radiance Fields (NeRF) and 2D imaging process via differentiable volume rendering. The model represents…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Yaxuan Zhu , Jianwen Xie , Ping Li

The neural rendering of humans is a topic of great research significance. However, previous works mostly focus on achieving photorealistic details, neglecting the exploration of human parsing. Additionally, classical semantic work are all…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Jie Zhang , Pengcheng Shi , Zaiwang Gu , Yiyang Zhou , Zhi Wang

Photo-realistic free-viewpoint rendering of real-world scenes using classical computer graphics techniques is challenging, because it requires the difficult step of capturing detailed appearance and geometry models. Recent studies have…

Computer Vision and Pattern Recognition · Computer Science 2021-01-08 Lingjie Liu , Jiatao Gu , Kyaw Zaw Lin , Tat-Seng Chua , Christian Theobalt
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