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Sensor selection is a useful method to help reduce data throughput, as well as computational, power, and hardware requirements, while still maintaining acceptable performance. Although minimizing the Cram\'er-Rao bound has been adopted…

Signal Processing · Electrical Eng. & Systems 2023-08-01 Costas A. Kokke , Mario Coutiño , Laura Anitori , Richard Heusdens , Geert Leus

Radiologists usually observe anatomical regions of chest X-ray images as well as the overall image before making a decision. However, most existing deep learning models only look at the entire X-ray image for classification, failing to…

Computer Vision and Pattern Recognition · Computer Science 2021-05-21 Nkechinyere N. Agu , Joy T. Wu , Hanqing Chao , Ismini Lourentzou , Arjun Sharma , Mehdi Moradi , Pingkun Yan , James Hendler

A common way to implement navigation in mobile robots is through the use of landmarks. In this case, the main goal of the controller is to make progress toward a goal location (stability), while avoiding the boundary of the environment…

Dynamical Systems · Mathematics 2022-09-16 Chenfei Wang , Roberto Tron

In this paper, we investigate visual-based camera re-localization with neural networks for robotics and autonomous vehicles applications. Our solution is a CNN-based algorithm which predicts camera pose (3D translation and 3D rotation)…

Computer Vision and Pattern Recognition · Computer Science 2021-10-08 Arthur Moreau , Nathan Piasco , Dzmitry Tsishkou , Bogdan Stanciulescu , Arnaud de La Fortelle

In sensor networks characterized by irregular layouts and poor connectivity, anisotropic properties can significantly reduce the accuracy of distance estimation between nodes, consequently impairing the localization precision of…

Signal Processing · Electrical Eng. & Systems 2024-11-15 Yong Jin , Junfang Leng , Lin Zhou , Yu Jiang , Qian Wei

Accurate lesion segmentation in ultrasound images is essential for preventive screening and clinical diagnosis, yet remains challenging due to low contrast, blurry boundaries, and significant scale variations. Although existing deep…

Computer Vision and Pattern Recognition · Computer Science 2026-04-16 Chen Wang , Yixin Zhu , Yongbin Zhu , Fengyuan Shi , Qi Li , Jun Wang , Zuozhu Liu , Keli Hu

The past decade has witnessed significant progress on detecting objects in aerial images that are often distributed with large scale variations and arbitrary orientations. However most of existing methods rely on heuristically defined…

Computer Vision and Pattern Recognition · Computer Science 2021-07-13 Jiaming Han , Jian Ding , Jie Li , Gui-Song Xia

Medical image segmentation is usually regarded as one of the most important intermediate steps in clinical situations and medical imaging research. Thus, accurately assessing the segmentation quality of the automatically generated…

Image and Video Processing · Electrical Eng. & Systems 2022-01-19 Zhenxi Zhang , Chunna Tian , Jie Li , Zhusi Zhong , Zhicheng Jiao , Xinbo Gao

Region anchors are the cornerstone of modern object detection techniques. State-of-the-art detectors mostly rely on a dense anchoring scheme, where anchors are sampled uniformly over the spatial domain with a predefined set of scales and…

Computer Vision and Pattern Recognition · Computer Science 2019-04-15 Jiaqi Wang , Kai Chen , Shuo Yang , Chen Change Loy , Dahua Lin

Deep learning-based edge detectors heavily rely on pixel-wise labels which are often provided by multiple annotators. Existing methods fuse multiple annotations using a simple voting process, ignoring the inherent ambiguity of edges and…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Caixia Zhou , Yaping Huang , Mengyang Pu , Qingji Guan , Li Huang , Haibin Ling

3D object detection based on LiDAR point cloud and prior anchor boxes is a critical technology for autonomous driving environment perception and understanding. Nevertheless, an overlooked practical issue in existing methods is the ambiguity…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Shitao Chen , Haolin Zhang , Nanning Zheng

In this work, we study angle-based localization and rigidity maintenance control for multi-robot networks. First, we establish the relationship between angle rigidity and bearing rigidity considering \textit{directed} sensing graphs and…

Systems and Control · Electrical Eng. & Systems 2026-04-20 J. Francisco Presenza , Leonardo J. Colombo , Juan I. Giribet , Ignacio Mas

This work proposes a safety-critical local reactive controller that enables the robot to navigate in unknown and cluttered environments. In particular, the trajectory tracking task is formulated as a constrained polynomial optimization…

Robotics · Computer Science 2023-10-10 Yulin Li , Xindong Tang , Kai Chen , Chunxin Zheng , Haichao Liu , Jun Ma

We consider the problem of multi-class classification, where a stream of adversarially chosen queries arrive and must be assigned a label online. Unlike traditional bounds which seek to minimize the misclassification rate, we minimize the…

Machine Learning · Computer Science 2021-11-17 Guru Guruganesh , Allen Liu , Jon Schneider , Joshua Wang

Most state-of-the-art object detection systems follow an anchor-based diagram. Anchor boxes are densely proposed over the images and the network is trained to predict the boxes position offset as well as the classification confidence.…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Wenshuo Ma , Tingzhong Tian , Hang Xu , Yimin Huang , Zhenguo Li

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

Approximate convex decomposition aims to decompose a 3D shape into a set of almost convex components, whose convex hulls can then be used to represent the input shape. It thus enables efficient geometry processing algorithms specifically…

Graphics · Computer Science 2022-05-09 Xinyue Wei , Minghua Liu , Zhan Ling , Hao Su

Human navigation is facilitated through the association of actions with landmarks, tapping into our ability to recognize salient features in our environment. Consequently, navigational instructions for humans can be extremely concise, such…

We reduce a broad class of machine learning problems, usually addressed by EM or sampling, to the problem of finding the $k$ extremal rays spanning the conical hull of a data point set. These $k$ "anchors" lead to a global solution and a…

Machine Learning · Statistics 2014-06-24 Tianyi Zhou , Jeff Bilmes , Carlos Guestrin

Anchor-based Siamese trackers have achieved remarkable advancements in accuracy, yet the further improvement is restricted by the lagged tracking robustness. We find the underlying reason is that the regression network in anchor-based…

Computer Vision and Pattern Recognition · Computer Science 2020-07-10 Zhipeng Zhang , Houwen Peng , Jianlong Fu , Bing Li , Weiming Hu