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A new model-based image adjustment for the enhancement of multi-resolution image fusion or pansharpening is proposed. Such image adjustment is needed for most pansharpening methods using panchromatic band and/or intensity image (calculated…

Image and Video Processing · Electrical Eng. & Systems 2021-03-05 Gintautas Palubinskas

Change detection is one of the most challenging issues when analyzing remotely sensed images. Comparing several multi-date images acquired through the same kind of sensor is the most common scenario. Conversely, designing robust, flexible…

Computer Vision and Pattern Recognition · Computer Science 2016-09-21 Vinicius Ferraris , Nicolas Dobigeon , Qi Wei , Marie Chabert

In this paper, a new variant of an algorithm for normalized cross-correlation (NCC) is proposed in the context of template matching in images. The proposed algorithm is based on the precomputation of a template image approximation, enabling…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Davor Marušić , Siniša Popović , Zoran Kalafatić

In this paper, we present a framework for computing dense keypoint correspondences between images under strong scene appearance changes. Traditional methods, based on nearest neighbour search in the feature descriptor space, perform poorly…

Computer Vision and Pattern Recognition · Computer Science 2019-12-11 Grzegorz Kurzejamski , Jacek Komorowski , Lukasz Dabala , Konrad Czarnota , Simon Lynen , Tomasz Trzcinski

In this work, we introduce a Denser Feature Network (DenserNet) for visual localization. Our work provides three principal contributions. First, we develop a convolutional neural network (CNN) architecture which aggregates feature maps at…

Computer Vision and Pattern Recognition · Computer Science 2021-03-15 Dongfang Liu , Yiming Cui , Liqi Yan , Christos Mousas , Baijian Yang , Yingjie Chen

A key recent advance in face recognition models a test face image as a sparse linear combination of a set of training face images. The resulting sparse representations have been shown to possess robustness against a variety of distortions…

Computer Vision and Pattern Recognition · Computer Science 2011-11-09 Yi Chen , Umamahesh Srinivas , Thong T. Do , Vishal Monga , Trac D. Tran

In this paper, we address the problem of global-scale image geolocation, proposing a mixed classification-retrieval scheme. Unlike other methods that strictly tackle the problem as a classification or retrieval task, we combine the two…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Giorgos Kordopatis-Zilos , Panagiotis Galopoulos , Symeon Papadopoulos , Ioannis Kompatsiaris

This paper addresses the problem of scale estimation in monocular SLAM by estimating absolute distances between camera centers of consecutive image frames. These estimates would improve the overall performance of classical (not deep) SLAM…

Computer Vision and Pattern Recognition · Computer Science 2019-09-04 Danila Rukhovich , Daniel Mouritzen , Ralf Kaestner , Martin Rufli , Alexander Velizhev

Feature matching is a crucial task in the field of computer vision, which involves finding correspondences between images. Previous studies achieve remarkable performance using learning-based feature comparison. However, the pervasive…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Yesheng Zhang , Xu Zhao

Building accurate and robust artificial intelligence systems for medical image assessment requires not only the research and design of advanced deep learning models but also the creation of large and curated sets of annotated training…

Computer Vision and Pattern Recognition · Computer Science 2022-01-05 Florin C. Ghesu , Bogdan Georgescu , Awais Mansoor , Youngjin Yoo , Dominik Neumann , Pragneshkumar Patel , R. S. Vishwanath , James M. Balter , Yue Cao , Sasa Grbic , Dorin Comaniciu

Cross-resolution image alignment is a key problem in multiscale gigapixel photography, which requires to estimate homography matrix using images with large resolution gap. Existing deep homography methods concatenate the input images or…

Computer Vision and Pattern Recognition · Computer Science 2021-06-15 Ruizhi Shao , Gaochang Wu , Yuemei Zhou , Ying Fu , Yebin Liu

In recent years, object detection has shown impressive results using supervised deep learning, but it remains challenging in a cross-domain environment. The variations of illumination, style, scale, and appearance in different domains can…

Computer Vision and Pattern Recognition · Computer Science 2019-08-12 Rongchang Xie , Fei Yu , Jiachao Wang , Yizhou Wang , Li Zhang

Cross-modal attention mechanisms have been widely applied to the image-text matching task and have achieved remarkable improvements thanks to its capability of learning fine-grained relevance across different modalities. However, the…

Computer Vision and Pattern Recognition · Computer Science 2022-10-05 Yuxiao Chen , Jianbo Yuan , Long Zhao , Tianlang Chen , Rui Luo , Larry Davis , Dimitris N. Metaxas

Even though convolutional neural networks (CNNs) are driving progress in medical image segmentation, standard models still have some drawbacks. First, the use of multi-scale approaches, i.e., encoder-decoder architectures, leads to a…

Computer Vision and Pattern Recognition · Computer Science 2020-02-18 Ashish Sinha , Jose Dolz

Camera localization aims to estimate 6 DoF camera poses from RGB images. Traditional methods detect and match interest points between a query image and a pre-built 3D model. Recent learning-based approaches encode scene structures into a…

Computer Vision and Pattern Recognition · Computer Science 2021-04-01 Shitao Tang , Chengzhou Tang , Rui Huang , Siyu Zhu , Ping Tan

Self-supervised representation learning for visual pre-training has achieved remarkable success with sample (instance or pixel) discrimination and semantics discovery of instance, whereas there still exists a non-negligible gap between…

Computer Vision and Pattern Recognition · Computer Science 2021-09-17 Xiaoni Li , Yu Zhou , Yifei Zhang , Aoting Zhang , Wei Wang , Ning Jiang , Haiying Wu , Weiping Wang

We propose a novel spatially-correlative loss that is simple, efficient and yet effective for preserving scene structure consistency while supporting large appearance changes during unpaired image-to-image (I2I) translation. Previous…

Computer Vision and Pattern Recognition · Computer Science 2021-04-05 Chuanxia Zheng , Tat-Jen Cham , Jianfei Cai

Clustering of hyperspectral images is a fundamental but challenging task. The recent development of hyperspectral image clustering has evolved from shallow models to deep and achieved promising results in many benchmark datasets. However,…

Computer Vision and Pattern Recognition · Computer Science 2021-11-16 Yaoming Cai , Zijia Zhang , Yan Liu , Pedram Ghamisi , Kun Li , Xiaobo Liu , Zhihua Cai

This paper introduces an astronomical image alignment algorithm. This algorithm uses the means of the rows and columns of the original image for alignment, and finds the optimal offset corresponding to the maximum similarity by comparing…

Instrumentation and Methods for Astrophysics · Physics 2024-04-16 Jie Zheng , Linqiao Jiang , Jianfeng Tian

In medical image analysis, multi-organ semi-supervised segmentation faces challenges such as insufficient labels and low contrast in soft tissues. To address these issues, existing studies typically employ semi-supervised segmentation…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Feilong Tang , Zhongxing Xu , Ming Hu , Wenxue Li , Peng Xia , Yiheng Zhong , Hanjun Wu , Jionglong Su , Zongyuan Ge