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The detection of clouds in satellite images is an essential preprocessing task for big data in remote sensing. Convolutional neural networks (CNNs) have greatly advanced the state-of-the-art in the detection of clouds in satellite images,…

Computer Vision and Pattern Recognition · Computer Science 2021-11-24 Joachim Nyborg , Ira Assent

Detecting and masking cloud and cloud shadow from satellite remote sensing images is a pervasive problem in the remote sensing community. Accurate and efficient detection of cloud and cloud shadow is an essential step to harness the value…

Computer Vision and Pattern Recognition · Computer Science 2019-11-12 Ke Xu , Kaiyu Guan , Jian Peng , Yunan Luo , Sibo Wang

Cloud detection in satellite images is an important first-step in many remote sensing applications. This problem is more challenging when only a limited number of spectral bands are available. To address this problem, a deep learning-based…

Computer Vision and Pattern Recognition · Computer Science 2019-01-30 Sorour Mohajerani , Parvaneh Saeedi

Existing face forgery detection usually follows the paradigm of training models in a single domain, which leads to limited generalization capacity when unseen scenarios and unknown attacks occur. In this paper, we elaborately investigate…

Computer Vision and Pattern Recognition · Computer Science 2024-07-01 Yingxin Lai , Zitong Yu , Jing Yang , Bin Li , Xiangui Kang , Linlin Shen

Lidars and cameras are critical sensors that provide complementary information for 3D detection in autonomous driving. While most prevalent methods progressively downscale the 3D point clouds and camera images and then fuse the high-level…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Zixuan Yin , Han Sun , Ningzhong Liu , Huiyu Zhou , Jiaquan Shen

This paper introduces a two-and multi-level phase mask design for improved depth of focus. A novel technique is proposed incorporating cubic and generalized cubic wavefront coding (WFC). The obtained system is optical-electronic requiring…

Optics · Physics 2017-07-26 Vladimir Katkovnik , Nicholas Hogasten , Karen Egiazarian

Small object detection in UAV imagery is crucial for applications such as search-and-rescue, traffic monitoring, and environmental surveillance, but it is hampered by tiny object size, low signal-to-noise ratios, and limited feature…

Computer Vision and Pattern Recognition · Computer Science 2025-08-14 Yuxiang Wang , Xuecheng Bai , Boyu Hu , Chuanzhi Xu , Haodong Chen , Vera Chung , Tingxue Li , Xiaoming Chen

4D millimeter-wave (MMW) radar, which provides both height information and dense point cloud data over 3D MMW radar, has become increasingly popular in 3D object detection. In recent years, radar-vision fusion models have demonstrated…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Haocheng Zhao , Runwei Guan , Taoyu Wu , Ka Lok Man , Limin Yu , Yutao Yue

Crowd counting presents enormous challenges in the form of large variation in scales within images and across the dataset. These issues are further exacerbated in highly congested scenes. Approaches based on straightforward fusion of…

Computer Vision and Pattern Recognition · Computer Science 2019-08-30 Vishwanath A Sindagi , Vishal M. Patel

Multi-Focus Image Fusion (MFIF) is a promising image enhancement technique to obtain all-in-focus images meeting visual needs and it is a precondition of other computer vision tasks. One of the research trends of MFIF is to avoid the…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Yicheng Wang , Shuang Xu , Junmin Liu , Zixiang Zhao , Chunxia Zhang , Jiangshe Zhang

Scale variance is one of the crucial challenges in multi-scale object detection. Early approaches address this problem by exploiting the image and feature pyramid, which raises suboptimal results with computation burden and constrains from…

Computer Vision and Pattern Recognition · Computer Science 2020-11-06 Yue Shi , Bo Jiang , Zhengping Che , Jian Tang

Multiview detection incorporates multiple camera views to deal with occlusions, and its central problem is multiview aggregation. Given feature map projections from multiple views onto a common ground plane, the state-of-the-art method…

Computer Vision and Pattern Recognition · Computer Science 2021-08-13 Yunzhong Hou , Liang Zheng

This paper presents the development and implementation of a cloud detection algorithm for Proba-V. Accurate and automatic detection of clouds in satellite scenes is a key issue for a wide range of remote sensing applications. With no…

Atmospheric and Oceanic Physics · Physics 2020-12-21 Luis Gómez-Chova , Gonzalo Mateo-García , Jordi Muñoz-Marí , Gustau Camps-Valls

Accurate and high-resolution precipitation nowcasting from radar echo sequences is crucial for disaster mitigation and economic planning, yet it remains a significant challenge. Key difficulties include modeling complex multi-scale…

Computer Vision and Pattern Recognition · Computer Science 2026-04-20 Wenjie Luo , Chuanhu Deng , Chaorong Li , Rongyao Deng , Qiang Yang

A point cloud enhancement method for 4D mmWave radar imagery is proposed in this paper. Based on the patch antenna and MIMO array theories, the MIMO array with small redundancy and high SNR is designed to provide the probability of high…

Image and Video Processing · Electrical Eng. & Systems 2024-01-31 Qingmian Wan , Hongli Peng , Xing Liao , Kuayue Liu , Junfa Mao

Remote sensing object detection is a critical technology for real-world applications such as natural resource monitoring, traffic management, and UAV-based rescue. Detecting tiny objects in high-resolution aerial imagery remains challenging…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Ben Liang , Hongguang Wei , Yuan Liu , Bingwen Qiu , Yihong Wang , Xiubao Sui , Qian Chen

Multi-focus image fusion (MFIF) addresses the depth-of-field (DOF) limitations of optical lenses, where only objects within a specific range appear sharp. Although traditional and deep learning methods have advanced the field, challenges…

Computer Vision and Pattern Recognition · Computer Science 2025-10-23 Luca Piano , Peng Huanwen , Radu Ciprian Bilcu

Cross-view geo-localization aims to determine the geographical location of a query image by matching it against a gallery of images. This task is challenging due to the significant appearance variations of objects observed from variable…

Computer Vision and Pattern Recognition · Computer Science 2025-09-17 YiTong Liu , TianZhu Liu , YanFeng GU

Multi-view face detection in open environment is a challenging task due to diverse variations of face appearances and shapes. Most multi-view face detectors depend on multiple models and organize them in parallel, pyramid or tree structure,…

Computer Vision and Pattern Recognition · Computer Science 2018-02-13 Shuzhe Wu , Meina Kan , Zhenliang He , Shiguang Shan , Xilin Chen

Few-shot learning (FSL) aims to address the data-scarce problem. A standard FSL framework is composed of two components: (1) Pre-train. Employ the base data to generate a CNN-based feature extraction model (FEM). (2) Meta-test. Apply the…

Computer Vision and Pattern Recognition · Computer Science 2021-11-09 Shuai Shao , Lei Xing , Yan Wang , Rui Xu , Chunyan Zhao , Yan-Jiang Wang , Bao-Di Liu