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To address the challenges in UAV object detection, such as complex backgrounds, severe occlusion, dense small objects, and varying lighting conditions,this paper proposes PT-DETR based on RT-DETR, a novel detection algorithm specifically…

Computer Vision and Pattern Recognition · Computer Science 2025-10-31 Bingcong Huo , Zhiming Wang

Tiny object detection plays a vital role in drone surveillance, remote sensing, and autonomous systems, enabling the identification of small targets across vast landscapes. However, existing methods suffer from inefficient feature leverage…

Computer Vision and Pattern Recognition · Computer Science 2025-08-11 Zhangchi Hu , Peixi Wu , Jie Chen , Huyue Zhu , Yijun Wang , Yansong Peng , Hebei Li , Xiaoyan Sun

Long-term complex activity recognition and localisation can be crucial for decision making in autonomous systems such as smart cars and surgical robots. Here we address the problem via a novel deformable, spatiotemporal scene graph…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Salman Khan , Fabio Cuzzolin

Various models have been proposed to perform object detection. However, most require many handdesigned components such as anchors and non-maximum-suppression(NMS) to demonstrate good performance. To mitigate these issues, Transformer-based…

Computer Vision and Pattern Recognition · Computer Science 2022-06-16 Sang Yon Lee

Fetal heart rate (FHR) monitoring, before and during labor, is a very important medical practice in the detection of fetuses in danger. We clustered FHR tracings by compression in order to identify abnormal ones. We use a recently…

Tissues and Organs · Quantitative Biology 2007-05-23 C. Costa Santos , J. Bernardes , P. Vitanyi , L. Antunes

Target tracking represents a state estimation problem recurrent in many practical scenarios like air traffic control, autonomous vehicles, marine radar surveillance and so on. In a Bayesian perspective, when phenomena like clutter are…

Applications · Statistics 2022-11-28 Alessandro D'Ortenzio , Costanzo Manes , Umut Orguner

The paper presents a deep learning-aided iterative detection algorithm for massive overloaded MIMO systems. Since the proposed algorithm is based on the projected gradient descent method with trainable parameters, it is named as trainable…

Information Theory · Computer Science 2018-12-27 Satoshi Takabe , Masayuki Imanishi , Tadashi Wadayama , Kazunori Hayashi

Small and cluttered objects are common in real-world which are challenging for detection. The difficulty is further pronounced when the objects are rotated, as traditional detectors often routinely locate the objects in horizontal bounding…

Computer Vision and Pattern Recognition · Computer Science 2022-04-29 Xue Yang , Junchi Yan , Wenlong Liao , Xiaokang Yang , Jin Tang , Tao He

Pedestrian detection in a crowd is a very challenging issue. This paper addresses this problem by a novel Non-Maximum Suppression (NMS) algorithm to better refine the bounding boxes given by detectors. The contributions are threefold: (1)…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Songtao Liu , Di Huang , Yunhong Wang

Clustering is crucial for many computer vision applications such as robust tracking, object detection and segmentation. This work presents a real-time clustering technique that takes advantage of the unique properties of event-based vision…

Robotics · Computer Science 2018-07-11 Francisco Barranco , Cornelia Fermuller , Eduardo Ros

Pedestrian detection in crowded scenes is a challenging problem, because occlusion happens frequently among different pedestrians. In this paper, we propose an effective and efficient detection network to hunt pedestrians in crowd scenes.…

Computer Vision and Pattern Recognition · Computer Science 2019-09-17 Cheng Chi , Shifeng Zhang , Junliang Xing , Zhen Lei , Stan Z. Li , Xudong Zou

Automatic estimation of the number of people in unconstrained crowded scenes is a challenging task and one major difficulty stems from the huge scale variation of people. In this paper, we propose a novel Deep Structured Scale Integration…

Computer Vision and Pattern Recognition · Computer Science 2019-08-26 Lingbo Liu , Zhilin Qiu , Guanbin Li , Shufan Liu , Wanli Ouyang , Liang Lin

The recently developed DEtection TRansformer (DETR) establishes a new object detection paradigm by eliminating a series of hand-crafted components. However, DETR suffers from extremely slow convergence, which increases the training cost…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Gongjie Zhang , Zhipeng Luo , Yingchen Yu , Kaiwen Cui , Shijian Lu

Drone detection is pivotal in numerous security and counter-UAV applications. However, existing deep learning-based methods typically struggle to balance robust feature representation with computational efficiency. This challenge is…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Jun Yang , Dong Wang , Hongxu Yin , Hongpeng Li , Jianxiong Yu

Optical Character Recognition (OCR) systems have been widely used in various applications for extracting semantic information from images. To give the user more control over their privacy, an on-device solution is needed. The current…

Computer Vision and Pattern Recognition · Computer Science 2022-01-03 Rachit S Munjal , Arun D Prabhu , Nikhil Arora , Sukumar Moharana , Gopi Ramena

Visual-based 3D semantic occupancy perception is a key technology for robotics, including autonomous vehicles, offering an enhanced understanding of the environment by 3D. This approach, however, typically requires more computational…

Robotics · Computer Science 2024-05-21 Yupeng Jia , Jie He , Runze Chen , Fang Zhao , Haiyong Luo

The recently proposed Detection Transformer (DETR) model successfully applies Transformer to objects detection and achieves comparable performance with two-stage object detection frameworks, such as Faster-RCNN. However, DETR suffers from…

Computer Vision and Pattern Recognition · Computer Science 2021-08-21 Peng Gao , Minghang Zheng , Xiaogang Wang , Jifeng Dai , Hongsheng Li

Transformer-based detection and segmentation methods use a list of learned detection queries to retrieve information from the transformer network and learn to predict the location and category of one specific object from each query. We…

Computer Vision and Pattern Recognition · Computer Science 2023-07-31 Yiming Cui , Linjie Yang , Haichao Yu

This paper addresses the aggregated monitoring problem for large-scale network systems with a few dedicated sensors. Full state estimation of such systems is often infeasible due to unobservability and/or computational infeasibility.…

Optimization and Control · Mathematics 2022-05-30 Muhammad Umar B. Niazi , Xiaodong Cheng , Carlos Canudas-de-Wit , Jacquelien M. A. Scherpen

Crowding at the entrances of large events may lead to critical and life-threatening situations, particularly when people start pushing each other to reach the event faster. Automatic and timely identification of pushing behavior would help…

Machine Learning · Computer Science 2023-06-13 Ahmed Alia , Mohammed Maree , Mohcine Chraibi , Anas Toma , Armin Seyfried