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Arbitrary-oriented objects exist widely in natural scenes, and thus the oriented object detection has received extensive attention in recent years. The mainstream rotation detectors use oriented bounding boxes (OBB) or quadrilateral…

Computer Vision and Pattern Recognition · Computer Science 2021-10-07 Qi Ming , Lingjuan Miao , Zhiqiang Zhou , Xue Yang , Yunpeng Dong

Dense object detectors rely on the sliding-window paradigm that predicts the object over a regular grid of image. Meanwhile, the feature maps on the point of the grid are adopted to generate the bounding box predictions. The point feature…

Computer Vision and Pattern Recognition · Computer Science 2021-04-12 Han Qiu , Yuchen Ma , Zeming Li , Songtao Liu , Jian Sun

Existing oriented object detection methods commonly use metric AP$_{50}$ to measure the performance of the model. We argue that AP$_{50}$ is inherently unsuitable for oriented object detection due to its large tolerance in angle deviation.…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Ying Zeng , Yushi Chen , Xue Yang , Qingyun Li , Junchi Yan

Accurate and fast 3D object detection from point clouds is a key task in autonomous driving. Existing one-stage 3D object detection methods can achieve real-time performance, however, they are dominated by anchor-based detectors which are…

Computer Vision and Pattern Recognition · Computer Science 2021-10-26 Guojun Wang , Jian Wu , Bin Tian , Siyu Teng , Long Chen , Dongpu Cao

In remote sensing rotated object detection, mainstream methods suffer from two bottlenecks, directional incoherence at detector neck and task conflict at detecting head. Ulitising fourier rotation equivariance, we introduce Fourier Angle…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Changyu Gu , Linwei Chen , Lin Gu , Ying Fu

Detecting rotated objects accurately and efficiently is a significant challenge in computer vision, particularly in applications such as aerial imagery, remote sensing, and autonomous driving. Although traditional object detection…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Chien Thai , Mai Xuan Trang , Huong Ninh , Hoang Hiep Ly , Anh Son Le

In this paper, we propose an efficient frontier detector method based on adaptive Rapidly-exploring Random Tree (RRT) for autonomous robot exploration. Robots can achieve real-time incremental frontier detection when they are exploring…

Robotics · Computer Science 2022-04-14 Zezhou Sun , Banghe Wu , Chengzhong Xu , Hui Kong

Existing rotated object detectors are mostly inherited from the horizontal detection paradigm, as the latter has evolved into a well-developed area. However, these detectors are difficult to perform prominently in high-precision detection…

Computer Vision and Pattern Recognition · Computer Science 2022-04-19 Xue Yang , Xiaojiang Yang , Jirui Yang , Qi Ming , Wentao Wang , Qi Tian , Junchi Yan

Oriented object detection is a fundamental yet challenging task in remote sensing (RS), aiming to locate and classify objects with arbitrary orientations. Recent advancements in deep learning have significantly enhanced the capabilities of…

Computer Vision and Pattern Recognition · Computer Science 2025-08-25 Kun Wang , Zi Wang , Zhang Li , Ang Su , Xichao Teng , Erting Pan , Minhao Liu , Qifeng Yu

Rotated object detection aims to identify and locate objects in images with arbitrary orientation. In this scenario, the oriented directions of objects vary considerably across different images, while multiple orientations of objects exist…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Yifan Pu , Yiru Wang , Zhuofan Xia , Yizeng Han , Yulin Wang , Weihao Gan , Zidong Wang , Shiji Song , Gao Huang

Unmanned Aerial Vehicle (UAV) applications have become increasingly prevalent in aerial photography and object recognition. However, there are major challenges to accurately capturing small targets in object detection due to the imbalanced…

Computer Vision and Pattern Recognition · Computer Science 2026-01-26 Rongxin Huang , Guangfeng Lin , Wenbo Zhou , Zhirong Li , Wenhuan Wu

Bounding box regression plays a crucial role in the field of object detection, and the positioning accuracy of object detection largely depends on the loss function of bounding box regression. Existing researchs improve regression…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Hao Zhang , Shuaijie Zhang

The past few years have seen an increased interest in aerial image object detection due to its critical value to large-scale geo-scientific research like environmental studies, urban planning, and intelligence monitoring. However, the task…

Computer Vision and Pattern Recognition · Computer Science 2023-02-03 Liya Wang , Alex Tien

We present DAFNe, a Dense one-stage Anchor-Free deep Network for oriented object detection. As a one-stage model, it performs bounding box predictions on a dense grid over the input image, being architecturally simpler in design, as well as…

Computer Vision and Pattern Recognition · Computer Science 2022-05-31 Steven Lang , Fabrizio Ventola , Kristian Kersting

Recently, significant progress has been made in the research of 3D object detection. However, most prior studies have focused on the utilization of center-based or anchor-based label assignment schemes. Alternative label assignment…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Shuai Liu , Boyang Li , Zhiyu Fang , Kai Huang

Oriented object detection has been developed rapidly in the past few years, where rotation equivariance is crucial for detectors to predict rotated boxes. It is expected that the prediction can maintain the corresponding rotation when…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Hang Xu , Xinyuan Liu , Haonan Xu , Yike Ma , Zunjie Zhu , Chenggang Yan , Feng Dai

Ship detection in remote sensing images plays a crucial role in various applications and has drawn increasing attention in recent years. However, existing arbitrary-oriented ship detection methods are generally developed on a set of…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Feng Zhang , Xueying Wang , Shilin Zhou , Yingqian Wang , Yi Hou

Boundary discontinuity and its inconsistency to the final detection metric have been the bottleneck for rotating detection regression loss design. In this paper, we propose a novel regression loss based on Gaussian Wasserstein distance as a…

Computer Vision and Pattern Recognition · Computer Science 2022-04-19 Xue Yang , Junchi Yan , Qi Ming , Wentao Wang , Xiaopeng Zhang , Qi Tian

Rotation augmentations generally improve a model's invariance/equivariance to rotation - except in object detection. In object detection the shape is not known, therefore rotation creates a label ambiguity. We show that the de-facto method…

Computer Vision and Pattern Recognition · Computer Science 2021-10-04 Agastya Kalra , Guy Stoppi , Bradley Brown , Rishav Agarwal , Achuta Kadambi

Fast and precise object detection for high-resolution aerial images has been a challenging task over the years. Due to the sharp variations on object scale, rotation, and aspect ratio, most existing methods are inefficient and imprecise. In…

Computer Vision and Pattern Recognition · Computer Science 2021-07-07 Pengbo Zhao , Zhenshen Qu , Yingjia Bu , Wenming Tan , Ye Ren , Shiliang Pu