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Implicit Neural Representations (INRs) encoding continuous multi-media data via multi-layer perceptrons has shown undebatable promise in various computer vision tasks. Despite many successful applications, editing and processing an INR…

Computer Vision and Pattern Recognition · Computer Science 2022-12-16 Dejia Xu , Peihao Wang , Yifan Jiang , Zhiwen Fan , Zhangyang Wang

Although Neural Radiance Fields (NeRF) is popular in the computer vision community recently, registering multiple NeRFs has yet to gain much attention. Unlike the existing work, NeRF2NeRF, which is based on traditional optimization methods…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Yu Chen , Gim Hee Lee

In view synthesis, a neural radiance field approximates underlying density and radiance fields based on a sparse set of scene pictures. To generate a pixel of a novel view, it marches a ray through the pixel and computes a weighted sum of…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Nikita Morozov , Denis Rakitin , Oleg Desheulin , Dmitry Vetrov , Kirill Struminsky

A practical benefit of implicit visual representations like Neural Radiance Fields (NeRFs) is their memory efficiency: large scenes can be efficiently stored and shared as small neural nets instead of collections of images. However,…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Jiading Fang , Shengjie Lin , Igor Vasiljevic , Vitor Guizilini , Rares Ambrus , Adrien Gaidon , Gregory Shakhnarovich , Matthew R. Walter

NeRFs have achieved incredible success in novel view synthesis. However, the accuracy of the implicit geometry is unsatisfactory because the passive static environmental illumination has low spatial frequency and cannot provide enough…

Computer Vision and Pattern Recognition · Computer Science 2024-08-14 Jianyu Tao , Changping Hu , Edward Yang , Jing Xu , Rui Chen

In this work, we aim to address the 3D scene stylization problem - generating stylized images of the scene at arbitrary novel view angles. A straightforward solution is to combine existing novel view synthesis and image/video style transfer…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Pei-Ze Chiang , Meng-Shiun Tsai , Hung-Yu Tseng , Wei-sheng Lai , Wei-Chen Chiu

Volumetric neural rendering methods, such as neural radiance fields (NeRFs), have enabled photo-realistic novel view synthesis. However, in their standard form, NeRFs do not support the editing of objects, such as a human head, within a…

Computer Vision and Pattern Recognition · Computer Science 2022-06-15 ShahRukh Athar , Zexiang Xu , Kalyan Sunkavalli , Eli Shechtman , Zhixin Shu

Very recently neural implicit rendering techniques have been rapidly evolved and shown great advantages in novel view synthesis and 3D scene reconstruction. However, existing neural rendering methods for editing purposes offer limited…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Bangbang Yang , Chong Bao , Junyi Zeng , Hujun Bao , Yinda Zhang , Zhaopeng Cui , Guofeng Zhang

We present radiance field propagation (RFP), a novel approach to segmenting objects in 3D during reconstruction given only unlabeled multi-view images of a scene. RFP is derived from emerging neural radiance field-based techniques, which…

Computer Vision and Pattern Recognition · Computer Science 2022-10-20 Xinhang Liu , Jiaben Chen , Huai Yu , Yu-Wing Tai , Chi-Keung Tang

In recent years, Neural Radiance Fields (NeRFs) have demonstrated significant potential in encoding highly-detailed 3D geometry and environmental appearance, positioning themselves as a promising alternative to traditional explicit…

Computer Vision and Pattern Recognition · Computer Science 2024-03-18 Tianxiang Ye , Qi Wu , Junyuan Deng , Guoqing Liu , Liu Liu , Songpengcheng Xia , Liang Pang , Wenxian Yu , Ling Pei

We present a method for automatically modifying a NeRF representation based on a single observation of a non-rigid transformed version of the original scene. Our method defines the transformation as a 3D flow, specifically as a weighted…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Zhenggang Tang , Zhongzheng Ren , Xiaoming Zhao , Bowen Wen , Jonathan Tremblay , Stan Birchfield , Alexander Schwing

This paper proposes a novel approach for rendering a pre-trained Neural Radiance Field (NeRF) in real-time on resource-constrained devices. We introduce Re-ReND, a method enabling Real-time Rendering of NeRFs across Devices. Re-ReND is…

Computer Vision and Pattern Recognition · Computer Science 2023-03-16 Sara Rojas , Jesus Zarzar , Juan Camilo Perez , Artsiom Sanakoyeu , Ali Thabet , Albert Pumarola , Bernard Ghanem

Considering the problem of novel view synthesis (NVS) from only a set of 2D images, we simplify the training process of Neural Radiance Field (NeRF) on forward-facing scenes by removing the requirement of known or pre-computed camera…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Zirui Wang , Shangzhe Wu , Weidi Xie , Min Chen , Victor Adrian Prisacariu

In this work, we introduce a challenging image restoration task, referred to as SuperInpaint, which aims to reconstruct missing regions in low-resolution images and generate completed images with arbitrarily higher resolutions. We have…

Computer Vision and Pattern Recognition · Computer Science 2023-07-28 Canyu Zhang , Qing Guo , Xiaoguang Li , Renjie Wan , Hongkai Yu , Ivor Tsang , Song Wang

In this work, we present a new method for 3D face reconstruction from sparse-view RGB images. Unlike previous methods which are built upon 3D morphable models (3DMMs) with limited details, we leverage an implicit representation to encode…

Computer Vision and Pattern Recognition · Computer Science 2022-10-04 Moran Li , Haibin Huang , Yi Zheng , Mengtian Li , Nong Sang , Chongyang Ma

Neural Radiance Fields (NeRFs) have demonstrated remarkable effectiveness in novel view synthesis within 3D environments. However, extracting a radiance field of one specific object from multi-view images encounters substantial challenges…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Zhiyi Li , Lihe Ding , Tianfan Xue

While neural radiance fields (NeRF) led to a breakthrough in photorealistic novel view synthesis, handling mirroring surfaces still denotes a particular challenge as they introduce severe inconsistencies in the scene representation.…

Computer Vision and Pattern Recognition · Computer Science 2025-01-09 Leif Van Holland , Michael Weinmann , Jan U. Müller , Patrick Stotko , Reinhard Klein

Neural implicit fields have emerged as a powerful 3D representation for reconstructing and rendering photo-realistic views, yet they possess limited editability. Conversely, explicit 3D representations, such as polygonal meshes, offer ease…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Can Wang , Mingming He , Menglei Chai , Dongdong Chen , Jing Liao

Neural radiance field (NeRF) is an emerging view synthesis method that samples points in a three-dimensional (3D) space and estimates their existence and color probabilities. The disadvantage of NeRF is that it requires a long training time…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Hye Bin Yoo , Hyun Min Han , Sung Soo Hwang , Il Yong Chun

We aim to improve the Inverted Neural Radiance Fields (iNeRF) algorithm which defines the image pose estimation problem as a NeRF based iterative linear optimization. NeRFs are novel neural space representation models that can synthesize…

Computer Vision and Pattern Recognition · Computer Science 2023-10-06 Ágoston István Csehi , Csaba Máté Józsa