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Neural Radiance Fields (NeRFs) have shown remarkable success in synthesizing photorealistic views from multi-view images of static scenes, but face challenges in dynamic, real-world environments with distractors like moving objects,…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Weining Ren , Zihan Zhu , Boyang Sun , Jiaqi Chen , Marc Pollefeys , Songyou Peng

Neural Radiance Fields (NeRFs) typically struggle to reconstruct and render highly specular objects, whose appearance varies quickly with changes in viewpoint. Recent works have improved NeRF's ability to render detailed specular appearance…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Dor Verbin , Pratul P. Srinivasan , Peter Hedman , Ben Mildenhall , Benjamin Attal , Richard Szeliski , Jonathan T. Barron

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

3D facial avatar reconstruction has been a significant research topic in computer graphics and computer vision, where photo-realistic rendering and flexible controls over poses and expressions are necessary for many related applications.…

Computer Vision and Pattern Recognition · Computer Science 2023-07-10 Wangbo Yu , Yanbo Fan , Yong Zhang , Xuan Wang , Fei Yin , Yunpeng Bai , Yan-Pei Cao , Ying Shan , Yang Wu , Zhongqian Sun , Baoyuan Wu

Neural Radiance Fields (NeRFs) have proven to be powerful 3D representations, capable of high quality novel view synthesis of complex scenes. While NeRFs have been applied to graphics, vision, and robotics, problems with slow rendering…

Computer Vision and Pattern Recognition · Computer Science 2023-10-30 Tristan Aumentado-Armstrong , Ashkan Mirzaei , Marcus A. Brubaker , Jonathan Kelly , Alex Levinshtein , Konstantinos G. Derpanis , Igor Gilitschenski

We study the problem of novel view synthesis of objects from a single image. Existing methods have demonstrated the potential in single-view view synthesis. However, they still fail to recover the fine appearance details, especially in…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Xingyi Li , Chaoyi Hong , Yiran Wang , Zhiguo Cao , Ke Xian , Guosheng Lin

As a powerful representation of 3D scenes, the neural radiance field (NeRF) enables high-quality novel view synthesis from multi-view images. Stylizing NeRF, however, remains challenging, especially on simulating a text-guided style with…

Computer Vision and Pattern Recognition · Computer Science 2022-12-16 Can Wang , Ruixiang Jiang , Menglei Chai , Mingming He , Dongdong Chen , Jing Liao

Recent advances in diffusion models such as ControlNet have enabled geometrically controllable, high-fidelity text-to-image generation. However, none of them addresses the question of adding such controllability to text-to-3D generation. In…

Computer Vision and Pattern Recognition · Computer Science 2023-09-08 Sungwon Hwang , Junha Hyung , Jaegul Choo

This paper presents a novel grid-based NeRF called F2-NeRF (Fast-Free-NeRF) for novel view synthesis, which enables arbitrary input camera trajectories and only costs a few minutes for training. Existing fast grid-based NeRF training…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Peng Wang , Yuan Liu , Zhaoxi Chen , Lingjie Liu , Ziwei Liu , Taku Komura , Christian Theobalt , Wenping Wang

Neural random fields (NRFs), referring to a class of generative models that use neural networks to implement potential functions in random fields (a.k.a. energy-based models), are not new but receive less attention with slow progress.…

Machine Learning · Statistics 2020-07-23 Yunfu Song , Zhijian Ou

Recent breakthroughs in text-guided image generation have led to remarkable progress in the field of 3D synthesis from text. By optimizing neural radiance fields (NeRF) directly from text, recent methods are able to produce remarkable…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Dana Cohen-Bar , Elad Richardson , Gal Metzer , Raja Giryes , Daniel Cohen-Or

Image translation and manipulation have gain increasing attention along with the rapid development of deep generative models. Although existing approaches have brought impressive results, they mainly operated in 2D space. In light of recent…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Yuedong Chen , Qianyi Wu , Chuanxia Zheng , Tat-Jen Cham , Jianfei Cai

Neural radiance fields (NeRFs) enable novel view synthesis with unprecedented visual quality. However, to render photorealistic images, NeRFs require hundreds of deep multilayer perceptron (MLP) evaluations - for each pixel. This is…

Computer Vision and Pattern Recognition · Computer Science 2023-04-21 Ziyu Wan , Christian Richardt , Aljaž Božič , Chao Li , Vijay Rengarajan , Seonghyeon Nam , Xiaoyu Xiang , Tuotuo Li , Bo Zhu , Rakesh Ranjan , Jing Liao

We propose pix2pix3D, a 3D-aware conditional generative model for controllable photorealistic image synthesis. Given a 2D label map, such as a segmentation or edge map, our model learns to synthesize a corresponding image from different…

Computer Vision and Pattern Recognition · Computer Science 2023-05-02 Kangle Deng , Gengshan Yang , Deva Ramanan , Jun-Yan Zhu

Neural Radiance Field (NeRF) approaches learn the underlying 3D representation of a scene and generate photo-realistic novel views with high fidelity. However, most proposed settings concentrate on modelling a single object or a single…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Ankit Dhiman , Srinath R , Harsh Rangwani , Rishubh Parihar , Lokesh R Boregowda , Srinath Sridhar , R Venkatesh Babu

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

We introduce AutoRF - a new approach for learning neural 3D object representations where each object in the training set is observed by only a single view. This setting is in stark contrast to the majority of existing works that leverage…

Computer Vision and Pattern Recognition · Computer Science 2022-04-08 Norman Müller , Andrea Simonelli , Lorenzo Porzi , Samuel Rota Bulò , Matthias Nießner , Peter Kontschieder

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

This paper aims to tackle the challenge of efficiently producing interactive free-viewpoint videos. Some recent works equip neural radiance fields with image encoders, enabling them to generalize across scenes. When processing dynamic…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Haotong Lin , Sida Peng , Zhen Xu , Yunzhi Yan , Qing Shuai , Hujun Bao , Xiaowei Zhou

Recently, Neural Radiance Fields (NeRF) has shown promising performances on reconstructing 3D scenes and synthesizing novel views from a sparse set of 2D images. Albeit effective, the performance of NeRF is highly influenced by the quality…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Xuran Pan , Zihang Lai , Shiji Song , Gao Huang
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