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Surface wave tomography is essential for investigating the shear-wave velocity structure of the crust and upper mantle. The direct surface wave tomography method, DSurfTomo, has become one of the most widely adopted packages due to its…

Geophysics · Physics 2026-04-15 Shaohang Zhu , Junlun Li , Guoyi Chen , Hongjian Fang , Huajian Yao

Diffusion models produce high-quality synthetic data but suffer from slow inference. We propose 3D Variable-Step Denoising Diffusion Probabilistic Model (VS-DDPM) a framework engineered to maintain generative quality while accelerating…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Nikoo Moradi , Gijs Luijten , Behrus Hinrichs-Puladi , Jens Kleesiek , Victor Alves , Jan Egger , André Ferreira

Burst image processing is becoming increasingly popular in recent years. However, it is a challenging task since individual burst images undergo multiple degradations and often have mutual misalignments resulting in ghosting and zipper…

Computer Vision and Pattern Recognition · Computer Science 2023-04-14 Nancy Mehta , Akshay Dudhane , Subrahmanyam Murala , Syed Waqas Zamir , Salman Khan , Fahad Shahbaz Khan

Multishot Magnetic Resonance Imaging (MRI) is a promising imaging modality that can produce a high-resolution image with relatively less data acquisition time. The downside of multishot MRI is that it is very sensitive to subject motion and…

Computer Vision and Pattern Recognition · Computer Science 2020-03-13 Muhammad Usman , Muhammad Umar Farooq , Siddique Latif , Muhammad Asim , Junaid Qadir

Semantic segmentation is a fundamental task in computer vision with wide-ranging applications, including autonomous driving and robotics. While RGB-based methods have achieved strong performance with CNNs and Transformers, their…

Computer Vision and Pattern Recognition · Computer Science 2026-01-01 Fuqiang Gu , Yuanke Li , Xianlei Long , Kangping Ji , Chao Chen , Qingyi Gu , Zhenliang Ni

Recent 3D reconstruction methods achieve impressive results with dense multi-view imagery but struggle when only a few views are available. Various approaches, including regularization techniques, semantic priors, and geometric constraints,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Yi-Chuan Huang , Hao-Jen Chien , Chin-Yang Lin , Ying-Huan Chen , Yu-Lun Liu

Multispectral object detection, utilizing both visible (RGB) and thermal infrared (T) modals, has garnered significant attention for its robust performance across diverse weather and lighting conditions. However, effectively exploiting the…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 Jinzhong Wang , Xuetao Tian , Shun Dai , Tao Zhuo , Haorui Zeng , Hongjuan Liu , Jiaqi Liu , Xiuwei Zhang , Yanning Zhang

Robust GNSS positioning in urban environments is still plagued by multipath effects, particularly due to the complex signal propagation induced by ubiquitous surfaces with varied radio frequency reflectivities. Current 3D Mapping Aided…

Signal Processing · Electrical Eng. & Systems 2025-04-24 Shiyao Lv , Xin Zhang , Xingqun Zhan

Video Anomaly Detection (VAD) is an essential yet challenging task in signal processing. Since certain anomalies cannot be detected by isolated analysis of either temporal or spatial information, the interaction between these two types of…

Computer Vision and Pattern Recognition · Computer Science 2023-07-07 Zhiyuan Ning , Zhangxun Li , Zhengliang Guo , Zile Wang , Liang Song

Estimating accurate, view-consistent geometry and camera poses from uncalibrated multi-view/video inputs remains challenging - especially at high spatial resolutions and over long sequences. We present DAGE, a dual-stream transformer whose…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Tuan Duc Ngo , Jiahui Huang , Seoung Wug Oh , Kevin Blackburn-Matzen , Evangelos Kalogerakis , Chuang Gan , Joon-Young Lee

Existing portrait matting methods either require auxiliary inputs that are costly to obtain or involve multiple stages that are computationally expensive, making them less suitable for real-time applications. In this work, we present a…

Computer Vision and Pattern Recognition · Computer Science 2022-03-21 Zhanghan Ke , Jiayu Sun , Kaican Li , Qiong Yan , Rynson W. H. Lau

Photoacoustic tomography (PAT) offers optical contrast, whereas magnetic resonance imaging (MRI) excels in imaging soft tissue and organ anatomy. The fusion of PAT with MRI holds promising application prospects due to their complementary…

Image and Video Processing · Electrical Eng. & Systems 2025-03-20 Yutian Zhong , Jinchuan He , Zhichao Liang , Shuangyang Zhang , Qianjin Feng , Lijun Lu , Li Qi

Reliable segmentation of road lines and markings is critical to autonomous driving. Our work is motivated by the observations that road lines and markings are (1) frequently occluded in the presence of moving vehicles, shadow, and glare and…

Computer Vision and Pattern Recognition · Computer Science 2024-04-12 Shan Wang , Chuong Nguyen , Jiawei Liu , Kaihao Zhang , Wenhan Luo , Yanhao Zhang , Sundaram Muthu , Fahira Afzal Maken , Hongdong Li

Achieving pixel-level registration between SAR and optical images remains a challenging task due to their fundamentally different imaging mechanisms and visual characteristics. Although deep learning has achieved great success in many…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Haodong Wang , Tao Zhuo , Xiuwei Zhang , Hanlin Yin , Wencong Wu , Yanning Zhang

Domain Generalization Semantic Segmentation (DGSS) in spectral remote sensing is severely challenged by spectral shifts across diverse acquisition conditions, which cause significant performance degradation for models deployed in unseen…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Xi Chen , Maojun Zhang , Yu Liu , Shen Yan

3D reconstruction and simulation, although interrelated, have distinct objectives: reconstruction requires a flexible 3D representation that can adapt to diverse scenes, while simulation needs a structured representation to model motion…

Computer Vision and Pattern Recognition · Computer Science 2024-11-25 Shaojie Ma , Yawei Luo , Wei Yang , Yi Yang

Although Digital Subtraction Angiography (DSA) is the most important imaging for visualizing cerebrovascular anatomy, its interpretation by clinicians remains difficult. This is particularly true when treating arteriovenous malformations…

Image and Video Processing · Electrical Eng. & Systems 2024-02-16 Kathleen Baur , Xin Xiong , Erickson Torio , Rose Du , Parikshit Juvekar , Reuben Dorent , Alexandra Golby , Sarah Frisken , Nazim Haouchine

Video frame interpolation (VFI) in scenarios with large motion remains challenging due to motion ambiguity between frames. While event cameras can capture high temporal resolution motion information, existing event-based VFI methods…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Ziran Zhang , Xiaohui Li , Yihao Liu , Yujin Wang , Yueting Chen , Tianfan Xue , Shi Guo

This paper proposes a mode multigrid (MMG) method, and applies it to accelerate the convergence of the steady state flow on unstructured grids. The dynamic mode decomposition (DMD) technique is used to analyze the convergence process of…

Computational Physics · Physics 2018-02-27 Yilang Liu , Weiwei Zhang , Jiaqing Kou

Motion estimation approaches typically employ sensor fusion techniques, such as the Kalman Filter, to handle individual sensor failures. More recently, deep learning-based fusion approaches have been proposed, increasing the performance and…

Computer Vision and Pattern Recognition · Computer Science 2022-09-19 Nimet Kaygusuz , Oscar Mendez , Richard Bowden