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Among current anchor-based detectors, a positive anchor box will be intuitively assigned to the object that overlaps it the most. The assigned label to each anchor will directly determine the optimization direction of the corresponding…

Computer Vision and Pattern Recognition · Computer Science 2022-11-14 Li Xiang , He Miao , Luo Haibo , Yang Huiyuan , Xiao Jiajie

Remote sensing image retrieval (RSIR) is the process of ranking database images depending on the degree of similarity compared to the query image. As the complexity of RSIR increases due to the diversity in shooting range, angle, and…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Hyunseung Chung , Woo-Jeoung Nam , Seong-Whan Lee

Detection of rare objects (e.g., traffic cones, traffic barrels and traffic warning triangles) is an important perception task to improve the safety of autonomous driving. Training of such models typically requires a large number of…

Computer Vision and Pattern Recognition · Computer Science 2022-07-05 Naifan Li , Fan Song , Ying Zhang , Pengpeng Liang , Erkang Cheng

Railway detection is critical for the automation of railway systems. Existing models often prioritize either speed or accuracy, but achieving both remains a challenge. To address the limitations of presetting anchor groups that struggle…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Hai Ni , Rui Wang , Scarlett Liu

Unmanned Aerial Vehicles (UAVs) are crucial in Search and Rescue (SAR) missions due to their ability to monitor vast maritime areas. However, small objects often remain difficult to detect from high altitudes due to low object-to-background…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Sakib Ahmed , Oscar Pizarro

Ship detection in aerial images remains an active yet challenging task due to arbitrary object orientation and complex background from a bird's-eye perspective. Most of the existing methods rely on angular prediction or predefined anchor…

Computer Vision and Pattern Recognition · Computer Science 2021-11-23 Feng Jie , Yuping Liang , Junpeng Zhang , Xiangrong Zhang , Quanhe Yao , Licheng Jiao

Automotive radar has increasingly attracted attention due to growing interest in autonomous driving technologies. Acquiring situational awareness using multimodal data collected at high sampling rates by various sensing devices including…

Computer Vision and Pattern Recognition · Computer Science 2023-02-22 Madhumitha Sakthi , Ahmed Tewfik , Marius Arvinte , Haris Vikalo

Recently, deep learning technology have been extensively used in the field of image recognition. However, its main application is the recognition and detection of ordinary pictures and common scenes. It is challenging to effectively and…

Computer Vision and Pattern Recognition · Computer Science 2022-06-09 Guangcun Shan , Hongyu Wang , Wei Liang , Congcong Liu , Qizi Ma , Quan Quan

Following the success of machine vision systems for on-line automated quality control and inspection processes, an object recognition solution is presented in this work for two different specific applications, i.e., the detection of quality…

Computer Vision and Pattern Recognition · Computer Science 2022-07-01 Kai Yao , Alberto Ortiz , Francisco Bonnin-Pascual

Drones or UAVs, equipped with different sensors, have been deployed in many places especially for urban traffic monitoring or last-mile delivery. It provides the ability to control the different aspects of traffic given real-time…

Computer Vision and Pattern Recognition · Computer Science 2020-09-17 George Adaimi , Sven Kreiss , Alexandre Alahi

Achieving a balance between computational efficiency and detection accuracy in the realm of rotated bounding box object detection within aerial imagery is a significant challenge. While prior research has aimed at creating lightweight…

Computer Vision and Pattern Recognition · Computer Science 2024-12-18 Zhifei Shi , Zongyao Yin , Sheng Chang , Xiao Yi , Xianchuan Yu

As a long-standing problem in computer vision, face detection has attracted much attention in recent decades for its practical applications. With the availability of face detection benchmark WIDER FACE dataset, much of the progresses have…

Computer Vision and Pattern Recognition · Computer Science 2019-01-31 Shifeng Zhang , Rui Zhu , Xiaobo Wang , Hailin Shi , Tianyu Fu , Shuo Wang , Tao Mei , Stan Z. Li

Object detection in aerial images is a challenging task due to the lack of visible features and variant orientation of objects. Significant progress has been made recently for predicting targets from aerial images with horizontal bounding…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Youtian Lin , Pengming Feng , Jian Guan , Wenwu Wang , Jonathon Chambers

In the realm of aerial imaging, the ability to detect small objects is pivotal for a myriad of applications, encompassing environmental surveillance, urban design, and crisis management. Leveraging RetinaNet, this work unveils DDR-Net: a…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Zhicheng Tang , Jinwen Tang , Yi Shang

Detecting small objects, such as drones, over long distances presents a significant challenge with broad implications for security, surveillance, environmental monitoring, and autonomous systems. Traditional imaging-based methods rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-04-30 Junran Guo , Tonglin Mu , Keyuan Li , Jianing Li , Ziyang Luo , Ye Chen , Xiaodong Fan , Jinquan Huang , Minjie Liu , Jinbei Zhang , Ruoyang Qi , Naiting Gu , Shihai Sun

A lot a research is focused on object detection and it has achieved significant advances with deep learning techniques in recent years. Inspite of the existing research, these algorithms are not usually optimal for dealing with sequences or…

Computer Vision and Pattern Recognition · Computer Science 2019-09-05 Ajit Jadhav , Prerana Mukherjee , Vinay Kaushik , Brejesh Lall

Small object detection via UAV (Unmanned Aerial Vehicle) images captured from drones and radar is a complex task with several formidable challenges. This domain encompasses numerous complexities that impede the accurate detection and…

Computer Vision and Pattern Recognition · Computer Science 2023-09-28 Vipin Gautam , Shitala Prasad , Sharad Sinha

Existing anchor-based and anchor-free object detectors in multi-stage or one-stage pipelines have achieved very promising detection performance. However, they still encounter the design difficulty in hand-crafted 2D anchor definition and…

Computer Vision and Pattern Recognition · Computer Science 2020-05-13 Geng Zhan , Dan Xu , Guo Lu , Wei Wu , Chunhua Shen , Wanli Ouyang

We present a novel method for extracting moving objects from TESS data using machine learning. Our approach uses two stacked 3D U-Nets with skip connections, which we call a W-Net, to filter background and identify pixels containing moving…

Earth and Planetary Astrophysics · Physics 2026-05-13 Brian P. Powell , Jorge Martinez-Palomera , Amy Tuson , Christina Hedges , Jessie Dotson , Jordan Caraballo-Vega

The emerging 4D millimeter-wave radar, measuring the range, azimuth, elevation, and Doppler velocity of objects, is recognized for its cost-effectiveness and robustness in autonomous driving. Nevertheless, its point clouds exhibit…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Yuzhi Wu , Li Xiao , Jun Liu , Guangfeng Jiang , XiangGen Xia