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Robust 3D perception under corruption has become an essential task for the realm of 3D vision. While current data augmentation techniques usually perform random transformations on all point cloud objects in an offline way and ignore the…

计算机视觉与模式识别 · 计算机科学 2023-09-20 Jie Wang , Lihe Ding , Tingfa Xu , Shaocong Dong , Xinli Xu , Long Bai , Jianan Li

We present a progressive image decomposition method based on a novel non-linear filter named Sub-window Variance filter. Our method is specifically designed for image detail enhancement purpose; this application requires extraction of image…

计算机视觉与模式识别 · 计算机科学 2021-07-23 Kin-Ming Wong

While supervised object detection and segmentation methods achieve impressive accuracy, they generalize poorly to images whose appearance significantly differs from the data they have been trained on. To address this when annotating data is…

计算机视觉与模式识别 · 计算机科学 2020-11-12 Isinsu Katircioglu , Helge Rhodin , Victor Constantin , Jörg Spörri , Mathieu Salzmann , Pascal Fua

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

Despite the impressive results achieved by many existing Structure from Motion (SfM) approaches, there is still a need to improve the robustness, accuracy, and efficiency on large-scale scenes with many outlier matches and sparse view…

计算机视觉与模式识别 · 计算机科学 2023-01-31 Yu Chen , Zihao Yu , Shu Song , Tianning Yu , Jianming Li , Gim Hee Lee

Video super-resolution aims at generating a high-resolution video from its low-resolution counterpart. With the rapid rise of deep learning, many recently proposed video super-resolution methods use convolutional neural networks in…

计算机视觉与模式识别 · 计算机科学 2020-01-07 Xiaohong Liu , Lingshi Kong , Yang Zhou , Jiying Zhao , Jun Chen

With the recently massive development in convolution neural networks, numerous lightweight CNN-based image super-resolution methods have been proposed for practical deployments on edge devices. However, most existing methods focus on one…

计算机视觉与模式识别 · 计算机科学 2022-06-23 Yan Wang

Depth estimation plays a crucial role in various tasks within endoscopic surgery, including navigation, surface reconstruction, and augmented reality visualization. Despite the significant achievements of foundation models in vision tasks,…

图像与视频处理 · 电气工程与系统科学 2024-05-15 Beilei Cui , Mobarakol Islam , Long Bai , An Wang , Hongliang Ren

Structure-from-motion (SfM) is a long-standing problem in the computer vision community, which aims to reconstruct the camera poses and 3D structure of a scene from a set of unconstrained 2D images. Classical frameworks solve this problem…

计算机视觉与模式识别 · 计算机科学 2023-12-08 Jianyuan Wang , Nikita Karaev , Christian Rupprecht , David Novotny

We propose unsupervised embedding adaptation for the downstream few-shot classification task. Based on findings that deep neural networks learn to generalize before memorizing, we develop Early-Stage Feature Reconstruction (ESFR) -- a novel…

计算机视觉与模式识别 · 计算机科学 2021-06-23 Dong Hoon Lee , Sae-Young Chung

We introduce a novel superpoint-based transformer architecture for efficient semantic segmentation of large-scale 3D scenes. Our method incorporates a fast algorithm to partition point clouds into a hierarchical superpoint structure, which…

计算机视觉与模式识别 · 计算机科学 2023-08-15 Damien Robert , Hugo Raguet , Loic Landrieu

Achieving 3D reconstruction from images captured under optimal conditions has been extensively studied in the vision and imaging fields. However, in real-world scenarios, challenges such as motion blur and insufficient illumination often…

计算机视觉与模式识别 · 计算机科学 2025-04-14 Xiaoting Yin , Hao Shi , Yuhan Bao , Zhenshan Bing , Yiyi Liao , Kailun Yang , Kaiwei Wang

Esophageal adenocarcinoma arises from Barrett's esophagus, which is the most serious complication of gastroesophageal reflux disease. Strategies for screening involve periodic surveillance and tissue biopsies. A major challenge in such…

计算机视觉与模式识别 · 计算机科学 2016-10-14 Anant S. Vemuri , Stephane A. Nicolau , Jacques Marescaux , Luc Soler , Nicholas Ayache

Image matching is still challenging in such scenes with large viewpoints or illumination changes or with low textures. In this paper, we propose a Transformer-based pseudo 3D image matching method. It upgrades the 2D features extracted from…

计算机视觉与模式识别 · 计算机科学 2024-08-13 Liming Han , Zhaoxiang Liu , Shiguo Lian

We propose a novel deep-learning framework for super-resolution ultrasound images and videos in terms of spatial resolution and line reconstruction. We up-sample the acquired low-resolution image through a vision-based interpolation method;…

计算机视觉与模式识别 · 计算机科学 2023-05-03 Simone Cammarasana , Paolo Nicolardi , Giuseppe Patanè

Supervised fine-tuning methods (SFT) perform great efficiency on artificial intelligence interpretation in SAR images, leveraging the powerful representation knowledge from pre-training models. Due to the lack of domain-specific pre-trained…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Xinyang Pu , Feng Xu

We propose a novel approach to feature point matching, suitable for robust and accurate outdoor visual localization in long-term scenarios. Given a query image, we first match it against a database of registered reference images, using…

计算机视觉与模式识别 · 计算机科学 2019-08-22 Hugo Germain , Guillaume Bourmaud , Vincent Lepetit

While traditional self-supervised learning methods improve performance and robustness across various medical tasks, they rely on single-vector embeddings that may not capture fine-grained concepts such as anatomical structures or organs.…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Costin F. Ciusdel , Alex Serban , Tiziano Passerini

Person re-identification (re-id) aims to match pedestrians observed by disjoint camera views. It attracts increasing attention in computer vision due to its importance to surveillance system. To combat the major challenge of cross-view…

计算机视觉与模式识别 · 计算机科学 2017-09-08 Lin Wu , Yang Wang , Junbin Gao , Xue Li

We propose an end-to-end attribute compression method for dense point clouds. The proposed method combines a frequency sampling module, an adaptive scale feature extraction module with geometry assistance, and a global hyperprior entropy…

图像与视频处理 · 电气工程与系统科学 2024-09-17 Xiaolong Mao , Hui Yuan , Tian Guo , Shiqi Jiang , Raouf Hamzaoui , Sam Kwong