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We address the problem of joint optical flow and camera motion estimation in rigid scenes by incorporating geometric constraints into an unsupervised deep learning framework. Unlike existing approaches which rely on brightness constancy and…

计算机视觉与模式识别 · 计算机科学 2020-02-28 Shihao Jiang , Dylan Campbell , Miaomiao Liu , Stephen Gould , Richard Hartley

We propose MFT -- Multi-Flow dense Tracker -- a novel method for dense, pixel-level, long-term tracking. The approach exploits optical flows estimated not only between consecutive frames, but also for pairs of frames at logarithmically…

计算机视觉与模式识别 · 计算机科学 2023-11-13 Michal Neoral , Jonáš Šerých , Jiří Matas

Recently, neural network for scene flow estimation show impressive results on automotive data such as the KITTI benchmark. However, despite of using sophisticated rigidity assumptions and parametrizations, such networks are typically…

计算机视觉与模式识别 · 计算机科学 2022-10-31 Lukas Mehl , Azin Jahedi , Jenny Schmalfuss , Andrés Bruhn

Neural Radiance Fields (NeRF) have achieved great success in the task of synthesizing novel views that preserve the same resolution as the training views. However, it is challenging for NeRF to synthesize high-quality high-resolution novel…

计算机视觉与模式识别 · 计算机科学 2026-02-11 Xiang Feng , Yongbo He , Yubo Wang , Chengkai Wang , Zhenzhong Kuang , Jiajun Ding , Feiwei Qin , Jun Yu , Jianping Fan

Learning with neural networks from a continuous stream of visual information presents several challenges due to the non-i.i.d. nature of the data. However, it also offers novel opportunities to develop representations that are consistent…

计算机视觉与模式识别 · 计算机科学 2024-09-19 Simone Marullo , Matteo Tiezzi , Marco Gori , Stefano Melacci

Neural Scene Flow Prior (NSFP) is of significant interest to the vision community due to its inherent robustness to out-of-distribution (OOD) effects and its ability to deal with dense lidar points. The approach utilizes a coordinate neural…

计算机视觉与模式识别 · 计算机科学 2023-08-30 Xueqian Li , Jianqiao Zheng , Francesco Ferroni , Jhony Kaesemodel Pontes , Simon Lucey

We introduce InFusionSurf, an innovative enhancement for neural radiance field (NeRF) frameworks in 3D surface reconstruction using RGB-D video frames. Building upon previous methods that have employed feature encoding to improve…

计算机视觉与模式识别 · 计算机科学 2024-10-08 Seunghwan Lee , Gwanmo Park , Hyewon Son , Jiwon Ryu , Han Joo Chae

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…

计算机视觉与模式识别 · 计算机科学 2023-08-17 Matteo Bortolon , Alessio Del Bue , Fabio Poiesi

Modeling the mechanics of fluid in complex scenes is vital to applications in design, graphics, and robotics. Learning-based methods provide fast and differentiable fluid simulators, however most prior work is unable to accurately model how…

机器学习 · 计算机科学 2023-09-12 Arjun Mani , Ishaan Preetam Chandratreya , Elliot Creager , Carl Vondrick , Richard Zemel

3D-aware image synthesis encompasses a variety of tasks, such as scene generation and novel view synthesis from images. Despite numerous task-specific methods, developing a comprehensive model remains challenging. In this paper, we present…

计算机视觉与模式识别 · 计算机科学 2023-08-28 Hansheng Chen , Jiatao Gu , Anpei Chen , Wei Tian , Zhuowen Tu , Lingjie Liu , Hao Su

The 4D Millimeter wave (mmWave) radar is a promising technology for vehicle sensing due to its cost-effectiveness and operability in adverse weather conditions. However, the adoption of this technology has been hindered by sparsity and…

计算机视觉与模式识别 · 计算机科学 2023-10-06 Jianan Liu , Qiuchi Zhao , Weiyi Xiong , Tao Huang , Qing-Long Han , Bing Zhu

The increasing ubiquity of video content and the corresponding demand for efficient access to meaningful information have elevated video summarization and video highlights as a vital research area. However, many state-of-the-art methods…

计算机视觉与模式识别 · 计算机科学 2026-05-05 Pritam Mishra , Coloma Ballester , Dimosthenis Karatzas

We introduce ViewNeRF, a Neural Radiance Field-based viewpoint estimation method that learns to predict category-level viewpoints directly from images during training. While NeRF is usually trained with ground-truth camera poses, multiple…

计算机视觉与模式识别 · 计算机科学 2022-12-02 Octave Mariotti , Oisin Mac Aodha , Hakan Bilen

Sparse view NeRF is challenging because limited input images lead to an under constrained optimization problem for volume rendering. Existing methods address this issue by relying on supplementary information, such as depth maps. However,…

计算机视觉与模式识别 · 计算机科学 2024-08-20 Xiao Cao , Beibei Lin , Bo Wang , Zhiyong Huang , Robby T. Tan

How important are training details and datasets to recent optical flow models like RAFT? And do they generalize? To explore these questions, rather than develop a new model, we revisit three prominent models, PWC-Net, IRR-PWC and RAFT, with…

计算机视觉与模式识别 · 计算机科学 2022-09-21 Deqing Sun , Charles Herrmann , Fitsum Reda , Michael Rubinstein , David Fleet , William T. Freeman

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…

计算机视觉与模式识别 · 计算机科学 2023-12-15 Qingsong Yan , Qiang Wang , Kaiyong Zhao , Jie Chen , Bo Li , Xiaowen Chu , Fei Deng

Recent techniques for real-time view synthesis have rapidly advanced in fidelity and speed, and modern methods are capable of rendering near-photorealistic scenes at interactive frame rates. At the same time, a tension has arisen between…

计算机视觉与模式识别 · 计算机科学 2024-07-03 Daniel Duckworth , Peter Hedman , Christian Reiser , Peter Zhizhin , Jean-François Thibert , Mario Lučić , Richard Szeliski , Jonathan T. Barron

Recent advances in Neural Radiance Fields (NeRFs) treat the problem of novel view synthesis as Sparse Radiance Field (SRF) optimization using sparse voxels for efficient and fast rendering (plenoxels,InstantNGP). In order to leverage…

计算机视觉与模式识别 · 计算机科学 2024-02-26 Abdullah Hamdi , Bernard Ghanem , Matthias Nießner

The success of deep neural networks generally requires a vast amount of training data to be labeled, which is expensive and unfeasible in scale, especially for video collections. To alleviate this problem, in this paper, we propose…

计算机视觉与模式识别 · 计算机科学 2019-04-05 Longlong Jing , Xiaodong Yang , Jingen Liu , Yingli Tian

In a scenario where multi-modal cameras are operating together, the problem of working with non-aligned images cannot be avoided. Yet, existing image fusion algorithms rely heavily on strictly registered input image pairs to produce more…

计算机视觉与模式识别 · 计算机科学 2024-01-02 Zeyang Zhang , Hui Li , Tianyang Xu , Xiaojun Wu , Josef Kittler