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This paper presents a unified surface reconstruction and rendering framework for LiDAR-visual systems, integrating Neural Radiance Fields (NeRF) and Neural Distance Fields (NDF) to recover both appearance and structural information from…

Robotics · Computer Science 2024-09-10 Jianheng Liu , Chunran Zheng , Yunfei Wan , Bowen Wang , Yixi Cai , Fu Zhang

We present a novel method to learn temporally consistent 3D reconstruction of clothed people from a monocular video. Recent methods for 3D human reconstruction from monocular video using volumetric, implicit or parametric human shape…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Akin Caliskan , Armin Mustafa , Adrian Hilton

Video-based human motion transfer creates video animations of humans following a source motion. Current methods show remarkable results for tightly-clad subjects. However, the lack of temporally consistent handling of plausible clothing…

Computer Vision and Pattern Recognition · Computer Science 2020-12-22 Moritz Kappel , Vladislav Golyanik , Mohamed Elgharib , Jann-Ole Henningson , Hans-Peter Seidel , Susana Castillo , Christian Theobalt , Marcus Magnor

Reconstructing 3D human pose and shape from monocular videos is a well-studied but challenging problem. Common challenges include occlusions, the inherent ambiguities in the 2D to 3D mapping and the computational complexity of video…

Computer Vision and Pattern Recognition · Computer Science 2023-05-02 Nikolaos Vasilikopoulos , Nikos Kolotouros , Aggeliki Tsoli , Antonis Argyros

Large-scale text-to-image models enable a wide range of image editing techniques, using text prompts or even spatial controls. However, applying these editing methods to multi-view images depicting a single scene leads to 3D-inconsistent…

Computer Vision and Pattern Recognition · Computer Science 2024-02-23 Or Patashnik , Rinon Gal , Daniel Cohen-Or , Jun-Yan Zhu , Fernando De la Torre

Neural Radiance Fields (NeRF) coupled with GANs represent a promising direction in the area of 3D reconstruction from a single view, owing to their ability to efficiently model arbitrary topologies. Recent work in this area, however, has…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Dario Pavllo , David Joseph Tan , Marie-Julie Rakotosaona , Federico Tombari

Reconstruction of deformable scenes from endoscopic videos is important for many applications such as intraoperative navigation, surgical visual perception, and robotic surgery. It is a foundational requirement for realizing autonomous…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Shreya Saha , Zekai Liang , Shan Lin , Jingpei Lu , Michael Yip , Sainan Liu

We present an approach to generate a 360-degree view of a person with a consistent, high-resolution appearance from a single input image. NeRF and its variants typically require videos or images from different viewpoints. Most existing…

Computer Vision and Pattern Recognition · Computer Science 2023-11-16 Badour AlBahar , Shunsuke Saito , Hung-Yu Tseng , Changil Kim , Johannes Kopf , Jia-Bin Huang

Spatio-Temporal video grounding (STVG) focuses on retrieving the spatio-temporal tube of a specific object depicted by a free-form textual expression. Existing approaches mainly treat this complicated task as a parallel frame-grounding…

Computer Vision and Pattern Recognition · Computer Science 2022-12-02 Yang Jin , Yongzhi Li , Zehuan Yuan , Yadong Mu

Video anomaly detection is an essential but challenging task. The prevalent methods mainly investigate the reconstruction difference between normal and abnormal patterns but ignore the semantics consistency between appearance and motion…

Computer Vision and Pattern Recognition · Computer Science 2023-03-10 Xiangyu Huang , Caidan Zhao , Zhiqiang Wu

In 3D human shape and pose estimation from a monocular video, models trained with limited labeled data cannot generalize well to videos with occlusion, which is common in the wild videos. The recent human neural rendering approaches…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Yu Cheng , Bo Wang , Robby T. Tan

Neural Radiance Fields (NeRF) have demonstrated impressive performance in novel view synthesis. However, NeRF and most of its variants still rely on traditional complex pipelines to provide extrinsic and intrinsic camera parameters, such as…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Qingsong Yan , Qiang Wang , Kaiyong Zhao , Jie Chen , Bo Li , Xiaowen Chu , Fei Deng

We extend neural 3D representations to allow for intuitive and interpretable user control beyond novel view rendering (i.e. camera control). We allow the user to annotate which part of the scene one wishes to control with just a small…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Kacper Kania , Kwang Moo Yi , Marek Kowalski , Tomasz Trzciński , Andrea Tagliasacchi

We present Non-Rigid Neural Radiance Fields (NR-NeRF), a reconstruction and novel view synthesis approach for general non-rigid dynamic scenes. Our approach takes RGB images of a dynamic scene as input (e.g., from a monocular video…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Edgar Tretschk , Ayush Tewari , Vladislav Golyanik , Michael Zollhöfer , Christoph Lassner , Christian Theobalt

Neural Representations for Videos (NeRV) has emerged as a promising implicit neural representation (INR) approach for video analysis, which represents videos as neural networks with frame indexes as inputs. However, NeRV-based methods are…

Computer Vision and Pattern Recognition · Computer Science 2025-01-20 Jialong Guo , Ke liu , Jiangchao Yao , Zhihua Wang , Jiajun Bu , Haishuai Wang

Neural radiance fields (NeRFs) have emerged as an effective method for novel-view synthesis and 3D scene reconstruction. However, conventional training methods require access to all training views during scene optimization. This assumption…

Computer Vision and Pattern Recognition · Computer Science 2023-09-07 Ryan Po , Zhengyang Dong , Alexander W. Bergman , Gordon Wetzstein

Recognizing human activities in videos is challenging due to the spatio-temporal complexity and context-dependence of human interactions. Prior studies often rely on single input modalities, such as RGB or skeletal data, limiting their…

Computer Vision and Pattern Recognition · Computer Science 2024-09-05 Tuyen Tran , Thao Minh Le , Hung Tran , Truyen Tran

Style transfer for human face has been widely researched in recent years. Majority of the existing approaches work in 2D image domain and have 3D inconsistency issue when applied on different viewpoints of the same face. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2023-11-23 Jianwei Feng , Prateek Singhal

NeRF aims to learn a continuous neural scene representation by using a finite set of input images taken from various viewpoints. A well-known limitation of NeRF methods is their reliance on data: the fewer the viewpoints, the higher the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-17 Matteo Bortolon , Alessio Del Bue , Fabio Poiesi

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