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This article is concerned with the numerical solution of subspace optimization problems, consisting of minimizing a smooth functional over the set of orthogonal projectors of fixed rank. Such problems are encountered in particular in…

数值分析 · 数学 2022-10-17 Eric Cancès , Gaspard Kemlin , Antoine Levitt

Landmark detection algorithms trained on high resolution images perform poorly on datasets containing low resolution images. This deters the performance of algorithms relying on quality landmarks, for example, face recognition. To the best…

计算机视觉与模式识别 · 计算机科学 2019-08-01 Amit Kumar , Rama Chellappa

Local feature extraction is a standard approach in computer vision for tackling important tasks such as image matching and retrieval. The core assumption of most methods is that images undergo affine transformations, disregarding more…

计算机视觉与模式识别 · 计算机科学 2023-04-04 Guilherme Potje , Felipe Cadar , Andre Araujo , Renato Martins , Erickson R. Nascimento

Salient object detection has achieved great improvement by using the Fully Convolution Network (FCN). However, the FCN-based U-shape architecture may cause the dilution problem in the high-level semantic information during the up-sample…

计算机视觉与模式识别 · 计算机科学 2020-05-01 Guangyu Ren , Tianhong Dai , Panagiotis Barmpoutis , Tania Stathaki

Multi-object tracking (MOT) is a fundamental task in computer vision that requires continuously tracking multiple targets while maintaining consistent identities across frames. However, most existing approaches primarily rely on…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Yanchao Wang , Dawei Zhang , Chengzhuan Yang , Wei Liu , Minglu Li , Hua Wang , Zhonglong Zheng , Ming-Hsuan Yang

Synthetic aperture sonar (SAS) requires precise positional and environmental information to produce well-focused output during the image reconstruction step. However, errors in these measurements are commonly present resulting in defocused…

图像与视频处理 · 电气工程与系统科学 2021-08-02 Isaac Gerg , Vishal Monga

Digital fringe projection (DFP) enables micrometer-level 3D reconstruction, yet extending it to large-scale mapping remains challenging because six-degree-of-freedom pose estimation often cannot match the reconstruction's precision.…

计算机视觉与模式识别 · 计算机科学 2026-03-13 Sehoon Tak , Keunhee Cho , Sangpil Kim , Jae-Sang Hyun

In this work, we introduce a deep-learning framework designed for estimating dense image correspondences. Our fully convolutional model generates dense feature maps for images, where each pixel is associated with a descriptor that can be…

计算机视觉与模式识别 · 计算机科学 2024-08-07 Monika Kwiatkowski , Simon Matern , Olaf Hellwich

The success of large language models has inspired the computer vision community to explore image segmentation foundation model that is able to zero/few-shot generalize through prompt engineering. Segment-Anything(SAM), among others, is the…

计算机视觉与模式识别 · 计算机科学 2024-04-11 Haojie Zhang , Yongyi Su , Xun Xu , Kui Jia

Air access networks have been recognized as a significant driver of various Internet of Things (IoT) services and applications. In particular, the aerial computing network infrastructure centered on the Internet of Drones has set off a new…

机器学习 · 计算机科学 2022-01-05 Zhe Zhang , Shiyao Ma , Zhaohui Yang , Zehui Xiong , Jiawen Kang , Yi Wu , Kejia Zhang , Dusit Niyato

Neural signed distance functions (SDFs) have been a vital representation to represent 3D shapes or scenes with neural networks. An SDF is an implicit function that can query signed distances at specific coordinates for recovering a 3D…

计算机视觉与模式识别 · 计算机科学 2025-11-19 Qiang Bai , Bojian Wu , Xi Yang , Zhizhong Han

As one of the automotive sensors that have emerged in recent years, 4D millimeter-wave radar has a higher resolution than conventional 3D radar and provides precise elevation measurements. But its point clouds are still sparse and noisy,…

计算机视觉与模式识别 · 计算机科学 2026-01-14 Hongsi Liu , Jun Liu , Guangfeng Jiang , Xin Jin

A critical obstacle preventing NeRF models from being deployed broadly in the wild is their reliance on accurate camera poses. Consequently, there is growing interest in extending NeRF models to jointly optimize camera poses and scene…

计算机视觉与模式识别 · 计算机科学 2023-06-09 Zezhou Cheng , Carlos Esteves , Varun Jampani , Abhishek Kar , Subhransu Maji , Ameesh Makadia

Recent works on implicit neural representations have shown promising results for multi-view surface reconstruction. However, most approaches are limited to relatively simple geometries and usually require clean object masks for…

计算机视觉与模式识别 · 计算机科学 2021-08-24 Jingyang Zhang , Yao Yao , Long Quan

We tackle the efficiency problem of learning local feature matching. Recent advancements have given rise to purely CNN-based and transformer-based approaches, each augmented with deep learning techniques. While CNN-based methods often excel…

计算机视觉与模式识别 · 计算机科学 2025-01-14 Junjie Ni , Guofeng Zhang , Guanglin Li , Yijin Li , Xinyang Liu , Zhaoyang Huang , Hujun Bao

Kohn-Sham density functional theory (DFT) has long struggled with the accurate description of strongly correlated and open shell systems and improvements have been minor even in the newest hybrid functionals. In this Letter we treat the…

化学物理 · 物理学 2021-04-01 Danny Gibney , Jan-Niklas Boyn , David A. Mazziotti

We present a real-time approach for image-based localization within large scenes that have been reconstructed offline using structure from motion (Sfm). From monocular video, our method continuously computes a precise 6-DOF camera pose, by…

计算机视觉与模式识别 · 计算机科学 2015-03-20 Hyon Lim , Sudipta Sinha , Michael Cohen , Matt Uyttendaele

It is possible to associate a highly constrained subset of relative 6 DoF poses between two 3D shapes, as long as the local surface orientation, the normal vector, is available at every surface point. Local shape features can be used to…

计算机视觉与模式识别 · 计算机科学 2018-08-29 Anders Glent Buch , Lilita Kiforenko , Dirk Kraft

The rapid advancements in computer vision have stimulated remarkable progress in face forgery techniques, capturing the dedicated attention of researchers committed to detecting forgeries and precisely localizing manipulated areas.…

计算机视觉与模式识别 · 计算机科学 2023-06-30 Yingxin Lai , Zhiming Luo , Zitong Yu

The accurate segmentation of medical images is crucial for diagnosing and treating diseases. Recent studies demonstrate that vision transformer-based methods have significantly improved performance in medical image segmentation, primarily…

计算机视觉与模式识别 · 计算机科学 2024-05-22 Wentao Wang , Xi Xiao , Mingjie Liu , Qing Tian , Xuanyao Huang , Qizhen Lan , Swalpa Kumar Roy , Tianyang Wang