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In this work we review the coarse-to-fine spatial feature pyramid concept, which is used in state-of-the-art optical flow estimation networks to make exploration of the pixel flow search space computationally tractable and efficient. Within…

计算机视觉与模式识别 · 计算机科学 2020-07-21 Markus Hofinger , Samuel Rota Bulò , Lorenzo Porzi , Arno Knapitsch , Thomas Pock , Peter Kontschieder

We propose FlowReg, a deep learning-based framework for unsupervised image registration for neuroimaging applications. The system is composed of two architectures that are trained sequentially: FlowReg-A which affinely corrects for gross…

计算机视觉与模式识别 · 计算机科学 2021-09-02 Sergiu Mocanu , Alan R. Moody , April Khademi

Finding a suitable layout represents a crucial task for diverse applications in graphic design. Motivated by simpler and smoother sampling trajectories, we explore the use of Flow Matching as an alternative to current diffusion-based layout…

计算机视觉与模式识别 · 计算机科学 2024-07-16 Julian Jorge Andrade Guerreiro , Naoto Inoue , Kento Masui , Mayu Otani , Hideki Nakayama

Bridging different modalities lies at the heart of cross-modality generation. While conventional approaches treat the text modality as a conditioning signal that gradually guides the denoising process from Gaussian noise to the target image…

计算机视觉与模式识别 · 计算机科学 2025-11-27 Ju He , Qihang Yu , Qihao Liu , Liang-Chieh Chen

Simulating fluid flow around arbitrary shapes is key to solving various engineering problems. However, simulating flow physics across complex geometries remains numerically challenging and computationally resource-intensive, particularly…

Existing optical flow methods are erroneous in challenging scenes, such as fog, rain, and night because the basic optical flow assumptions such as brightness and gradient constancy are broken. To address this problem, we present an…

计算机视觉与模式识别 · 计算机科学 2023-06-13 Haipeng Li , Kunming Luo , Shuaicheng Liu

Existing optical flow estimators usually employ the network architectures typically designed for image classification as the encoder to extract per-pixel features. However, due to the natural difference between the tasks, the architectures…

计算机视觉与模式识别 · 计算机科学 2022-07-05 Zhiwei Lin , Tingting Liang , Taihong Xiao , Yongtao Wang , Zhi Tang , Ming-Hsuan Yang

This paper studies optical flow estimation, a critical task in motion analysis with applications in autonomous navigation, action recognition, and film production. Traditional optical flow methods require consecutive frames, which are often…

计算机视觉与模式识别 · 计算机科学 2025-06-12 Mo Zhou , Jianwei Wang , Xuanmeng Zhang , Dylan Campbell , Kai Wang , Long Yuan , Wenjie Zhang , Xuemin Lin

Generative models have excelled in audio tasks using approaches such as language models, diffusion, and flow matching. However, existing generative approaches for speech enhancement (SE) face notable challenges: language model-based methods…

音频与语音处理 · 电气工程与系统科学 2025-05-28 Ziqian Wang , Zikai Liu , Xinfa Zhu , Yike Zhu , Mingshuai Liu , Jun Chen , Longshuai Xiao , Chao Weng , Lei Xie

Optical flow estimation in omnidirectional videos faces two significant issues: the lack of benchmark datasets and the challenge of adapting perspective video-based methods to accommodate the omnidirectional nature. This paper proposes the…

计算机视觉与模式识别 · 计算机科学 2022-08-09 Keshav Bhandari , Bin Duan , Gaowen Liu , Hugo Latapie , Ziliang Zong , Yan Yan

Optical flow computation with frame-based cameras provides high accuracy but the speed is limited either by the model size of the algorithm or by the frame rate of the camera. This makes it inadequate for high-speed applications. Event…

计算机视觉与模式识别 · 计算机科学 2022-07-25 Ashwin Sanjay Lele , Arijit Raychowdhury

Optical flow provides information on relative motion that is an important component in many computer vision pipelines. Neural networks provide high accuracy optical flow, yet their complexity is often prohibitive for application at the edge…

计算机视觉与模式识别 · 计算机科学 2023-07-13 Yannick Schnider , Stanislaw Wozniak , Mathias Gehrig , Jules Lecomte , Axel von Arnim , Luca Benini , Davide Scaramuzza , Angeliki Pantazi

Underwater environments impose severe constraints on conventional imaging systems and demand solutions that balance high-quality sensing with strict resource efficiency. While emerging event cameras offer a promising alternative, their…

计算机视觉与模式识别 · 计算机科学 2026-05-14 Pei Zhang , Yunkai Liang , Kaiqiang Wang

Key-point-based scene understanding is fundamental for autonomous driving applications. At the same time, optical flow plays an important role in many vision tasks. However, due to the implicit bias of equal attention on all points, classic…

计算机视觉与模式识别 · 计算机科学 2023-09-25 Zhonghua Yi , Hao Shi , Kailun Yang , Qi Jiang , Yaozu Ye , Ze Wang , Huajian Ni , Kaiwei Wang

We systematically compare and analyze a set of key components in unsupervised optical flow to identify which photometric loss, occlusion handling, and smoothness regularization is most effective. Alongside this investigation we construct a…

计算机视觉与模式识别 · 计算机科学 2020-08-17 Rico Jonschkowski , Austin Stone , Jonathan T. Barron , Ariel Gordon , Kurt Konolige , Anelia Angelova

Traditional unsupervised optical flow methods are vulnerable to occlusions and motion boundaries due to lack of object-level information. Therefore, we propose UnSAMFlow, an unsupervised flow network that also leverages object information…

计算机视觉与模式识别 · 计算机科学 2024-05-07 Shuai Yuan , Lei Luo , Zhuo Hui , Can Pu , Xiaoyu Xiang , Rakesh Ranjan , Denis Demandolx

Despite many advances in query optimization, indexing techniques, and data storage, modern data platforms still face difficulties in delivering robust query performance under high concurrency and computationally intensive queries. This…

数据库 · 计算机科学 2026-03-06 Adriano Vogel , Sören Henning , Otmar Ertl

Optical flow estimation has been a long-lasting and fundamental problem in the computer vision community. However, despite the advances of optical flow estimation in perspective videos, the 360$^\circ$ videos counterpart remains in its…

计算机视觉与模式识别 · 计算机科学 2023-01-30 Bin Duan , Keshav Bhandari , Gaowen Liu , Yan Yan

Despite the success of Large-Vision Language Models (LVLMs), general optimization objectives (e.g., standard MLE) fail to constrain visual trajectories, leading to language bias and hallucination. To mitigate this, current methods introduce…

计算机视觉与模式识别 · 计算机科学 2026-05-05 Yangfu Li , Yuning Gong , Hongjian Zhan , Teng Li , Yuanhuiyi Lyu , Tianyi Chen , Qi Liu , Ziyuan Huang , Zhihang Zhong , Dandan Zheng , Yue Lu

Optical flow is an indispensable building block for various important computer vision tasks, including motion estimation, object tracking, and disparity measurement. In this work, we propose TransFlow, a pure transformer architecture for…

计算机视觉与模式识别 · 计算机科学 2023-04-25 Yawen Lu , Qifan Wang , Siqi Ma , Tong Geng , Yingjie Victor Chen , Huaijin Chen , Dongfang Liu