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Neural radiance fields (NeRF) are a groundbreaking computer vision technology that enables the generation of high-quality, immersive visual content from multiple viewpoints. This capability has significant advantages for applications such…

Multimedia · Computer Science 2024-09-30 Pedro Martin , Antonio Rodrigues , Joao Ascenso , Maria Paula Queluz

Neural rendering has received tremendous attention since the advent of Neural Radiance Fields (NeRF), and has pushed the state-of-the-art on novel-view synthesis considerably. The recent focus has been on models that overfit to a single…

Computer Vision and Pattern Recognition · Computer Science 2022-07-29 Mohammed Suhail , Carlos Esteves , Leonid Sigal , Ameesh Makadia

Synthesizing realistic videos of humans using neural networks has been a popular alternative to the conventional graphics-based rendering pipeline due to its high efficiency. Existing works typically formulate this as an image-to-image…

Dynamic Neural Radiance Fields (NeRFs) achieve remarkable visual quality when synthesizing novel views of time-evolving 3D scenes. However, the common reliance on backward deformation fields makes reanimation of the captured object poses…

Computer Vision and Pattern Recognition · Computer Science 2024-02-12 Lukas Uzolas , Elmar Eisemann , Petr Kellnhofer

Neural Radiance Fields (NeRF) have emerged as a powerful representation for the task of novel view synthesis due to their simplicity and state-of-the-art performance. Though NeRF can produce photorealistic renderings of unseen viewpoints…

Computer Vision and Pattern Recognition · Computer Science 2021-12-02 Michael Niemeyer , Jonathan T. Barron , Ben Mildenhall , Mehdi S. M. Sajjadi , Andreas Geiger , Noha Radwan

Recent works on generalizable NeRFs have shown promising results on novel view synthesis from single or few images. However, such models have rarely been applied on other downstream tasks beyond synthesis such as semantic understanding and…

Computer Vision and Pattern Recognition · Computer Science 2024-04-10 Jianglong Ye , Naiyan Wang , Xiaolong Wang

Novel view synthesis is a long-standing problem. In this work, we consider a variant of the problem where we are given only a few context views sparsely covering a scene or an object. The goal is to predict novel viewpoints in the scene,…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Jonáš Kulhánek , Erik Derner , Torsten Sattler , Robert Babuška

3D scene segmentation based on neural implicit representation has emerged recently with the advantage of training only on 2D supervision. However, existing approaches still requires expensive per-scene optimization that prohibits…

Computer Vision and Pattern Recognition · Computer Science 2023-10-27 Hanlin Chen , Chen Li , Mengqi Guo , Zhiwen Yan , Gim Hee Lee

We propose a new method for learning a generalized animatable neural human representation from a sparse set of multi-view imagery of multiple persons. The learned representation can be used to synthesize novel view images of an arbitrary…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Yiming Wang , Qingzhe Gao , Libin Liu , Lingjie Liu , Christian Theobalt , Baoquan Chen

Representing and synthesizing novel views in real-world dynamic scenes from casual monocular videos is a long-standing problem. Existing solutions typically approach dynamic scenes by applying geometry techniques or utilizing temporal…

Computer Vision and Pattern Recognition · Computer Science 2023-01-12 Boyu Zhang , Wenbo Xu , Zheng Zhu , Guan Huang

Large scale 3D scene reconstruction is important for applications such as virtual reality and simulation. Existing neural rendering approaches (e.g., NeRF, 3DGS) have achieved realistic reconstructions on large scenes, but optimize per…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Yun Chen , Jingkang Wang , Ze Yang , Sivabalan Manivasagam , Raquel Urtasun

Existing works in single-image human reconstruction suffer from weak generalizability due to insufficient training data or 3D inconsistencies for a lack of comprehensive multi-view knowledge. In this paper, we introduce MagicMan, a…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Xu He , Xiaoyu Li , Di Kang , Jiangnan Ye , Chaopeng Zhang , Liyang Chen , Xiangjun Gao , Han Zhang , Zhiyong Wu , Haolin Zhuang

In this paper, we aim at synthesizing a free-viewpoint video of an arbitrary human performance using sparse multi-view cameras. Recently, several works have addressed this problem by learning person-specific neural radiance fields (NeRF) to…

Computer Vision and Pattern Recognition · Computer Science 2021-09-16 Youngjoong Kwon , Dahun Kim , Duygu Ceylan , Henry Fuchs

In this paper, we address the problem of simultaneous relighting and novel view synthesis of a complex scene from multi-view images with a limited number of light sources. We propose an analysis-synthesis approach called Relit-NeuLF.…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Zhong Li , Liangchen Song , Zhang Chen , Xiangyu Du , Lele Chen , Junsong Yuan , Yi Xu

Neural radiance fields (NeRF) have shown great success in novel view synthesis. However, recovering high-quality details from real-world scenes is still challenging for the existing NeRF-based approaches, due to the potential imperfect…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Kun Zhou , Wenbo Li , Nianjuan Jiang , Xiaoguang Han , Jiangbo Lu

Solving image-to-3D from a single view is an ill-posed problem, and current neural reconstruction methods addressing it through diffusion models still rely on scene-specific optimization, constraining their generalization capability. To…

Computer Vision and Pattern Recognition · Computer Science 2024-01-09 Christian Simon , Sen He , Juan-Manuel Perez-Rua , Mengmeng Xu , Amine Benhalloum , Tao Xiang

4D reconstruction and rendering of human activities is critical for immersive VR/AR experience.Recent advances still fail to recover fine geometry and texture results with the level of detail present in the input images from sparse…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Xin Suo , Yuheng Jiang , Pei Lin , Yingliang Zhang , Kaiwen Guo , Minye Wu , Lan Xu

Meeting online is becoming the new normal. Creating an immersive experience for online meetings is a necessity towards more diverse and seamless environments. Efficient photorealistic rendering of human 3D dynamics is the core of immersive…

Computer Vision and Pattern Recognition · Computer Science 2023-06-30 Chuanyue Shen , Letian Zhang , Zhangsihao Yang , Masood Mortazavi , Xiyun Song , Liang Peng , Heather Yu

Synthesizing photo-realistic images and videos is at the heart of computer graphics and has been the focus of decades of research. Traditionally, synthetic images of a scene are generated using rendering algorithms such as rasterization or…

Synthesizing a novel view from a single input image is a challenging task. Traditionally, this task was approached by estimating scene depth, warping, and inpainting, with machine learning models enabling parts of the pipeline. More…

Computer Vision and Pattern Recognition · Computer Science 2024-11-13 Noam Elata , Bahjat Kawar , Yaron Ostrovsky-Berman , Miriam Farber , Ron Sokolovsky