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The real-world deployment of fully autonomous mobile robots depends on a robust SLAM (Simultaneous Localization and Mapping) system, capable of handling dynamic environments, where objects are moving in front of the robot, and changing…

Lack of interpretability of deep convolutional neural networks (DCNN) is a well-known problem particularly in the medical domain as clinicians want trustworthy automated decisions. One way to improve trust is to demonstrate the localisation…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Junwen Wang , Katayoun Farrahi

An important challenge for autonomous agents such as robots is to maintain a spatially and temporally consistent model of the world. It must be maintained through occlusions, previously-unseen views, and long time horizons (e.g., loop…

Computer Vision and Pattern Recognition · Computer Science 2023-10-03 Dominik A. Kloepfer , Dylan Campbell , João F. Henriques

Advanced visual localization techniques encompass image retrieval challenges and 6 Degree-of-Freedom (DoF) camera pose estimation, such as hierarchical localization. Thus, they must extract global and local features from input images.…

Computer Vision and Pattern Recognition · Computer Science 2022-12-27 Wenzheng Song , Ran Yan , Boshu Lei , Takayuki Okatani

Visual localization is a useful alternative to standard localization techniques. It works by utilizing cameras. In a typical scenario, features are extracted from captured images and compared with geo-referenced databases. Location…

Computer Vision and Pattern Recognition · Computer Science 2020-06-28 Li Weng , Valerie Gouet-Brunet , Bahman Soheilian

We study the problem of learning to assign a characteristic pose, i.e., scale and orientation, for an image region of interest. Despite its apparent simplicity, the problem is non-trivial; it is hard to obtain a large-scale set of image…

Computer Vision and Pattern Recognition · Computer Science 2022-06-16 Jongmin Lee , Yoonwoo Jeong , Minsu Cho

Visual navigation tasks in real-world environments often require both self-motion and place recognition feedback. While deep reinforcement learning has shown success in solving these perception and decision-making problems in an end-to-end…

Robotics · Computer Science 2020-03-03 Marvin Chancán , Michael Milford

Global localization is an important and widely studied problem for many robotic applications. Place recognition approaches can be exploited to solve this task, e.g., in the autonomous driving field. While most vision-based approaches match…

Computer Vision and Pattern Recognition · Computer Science 2020-03-11 Daniele Cattaneo , Matteo Vaghi , Simone Fontana , Augusto Luis Ballardini , Domenico Giorgio Sorrenti

Camera localization is a classical computer vision task that serves various Artificial Intelligence and Robotics applications. With the rapid developments of Deep Neural Networks (DNNs), end-to-end visual localization methods are prosperous…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Xudong Zhang , Shuang Gao , Xiaohu Nan , Haikuan Ning , Yuchen Yang , Yishan Ping , Jixiang Wan , Shuzhou Dong , Jijunnan Li , Yandong Guo

Learning is an inherently continuous phenomenon. When humans learn a new task there is no explicit distinction between training and inference. As we learn a task, we keep learning about it while performing the task. What we learn and how we…

Computer Vision and Pattern Recognition · Computer Science 2019-03-28 Mitchell Wortsman , Kiana Ehsani , Mohammad Rastegari , Ali Farhadi , Roozbeh Mottaghi

Camera equipped drones are nowadays being used to explore large scenes and reconstruct detailed 3D maps. When free space in the scene is approximately known, an offline planner can generate optimal plans to efficiently explore the scene.…

Computer Vision and Pattern Recognition · Computer Science 2018-08-01 Benjamin Hepp , Debadeepta Dey , Sudipta N. Sinha , Ashish Kapoor , Neel Joshi , Otmar Hilliges

We propose a new method for realistic real-time novel-view synthesis (NVS) of large scenes. Existing neural rendering methods generate realistic results, but primarily work for small scale scenes (<50 square meters) and have difficulty at…

Computer Vision and Pattern Recognition · Computer Science 2023-11-10 Jeffrey Yunfan Liu , Yun Chen , Ze Yang , Jingkang Wang , Sivabalan Manivasagam , Raquel Urtasun

High-fidelity 3D scene reconstruction has been substantially advanced by recent progress in neural fields. However, most existing methods train a separate network from scratch for each individual scene. This is not scalable, inefficient,…

Computer Vision and Pattern Recognition · Computer Science 2023-10-02 Yang Fu , Shalini De Mello , Xueting Li , Amey Kulkarni , Jan Kautz , Xiaolong Wang , Sifei Liu

Localization in challenging, natural environments such as forests or woodlands is an important capability for many applications from guiding a robot navigating along a forest trail to monitoring vegetation growth with handheld sensors. In…

Robotics · Computer Science 2019-02-28 Georgi Tinchev , Adrian Penate-Sanchez , Maurice Fallon

Vision-based localization of an agent in a map is an important problem in robotics and computer vision. In that context, localization by learning matchable image features is gaining popularity due to recent advances in machine learning.…

Computer Vision and Pattern Recognition · Computer Science 2020-03-24 Janine Thoma , Danda Pani Paudel , Ajad Chhatkuli , Luc Van Gool

Accurate localization is a fundamental requirement for autonomous robots operating in indoor environments. Scene graphs encode the spatial structure of an environment as a hierarchy of semantic entities and their relationships, and can be…

This work proposes a new method for place recognition based on the scene architecture. From depth video, we compute the 3D model and we derive and describe geometrically the 2D map from which the scene descriptor is deduced to constitute…

Computer Vision and Pattern Recognition · Computer Science 2022-05-11 Farah Ibelaiden , Slimane Larabi

We demonstrate that deep learning methods can determine the best focus position from 1-2 image samples, enabling 5-10x faster focus than traditional search-based methods. In contrast with phase detection methods, deep autofocus does not…

Image and Video Processing · Electrical Eng. & Systems 2020-03-02 Chengyu Wang , Qian Huang , Ming Cheng , Zhan Ma , David J. Brady

It is common to implicitly assume access to intelligently captured inputs (e.g., photos from a human photographer), yet autonomously capturing good observations is itself a major challenge. We address the problem of learning to look around:…

Computer Vision and Pattern Recognition · Computer Science 2017-12-22 Dinesh Jayaraman , Kristen Grauman

A major focus of current research on place recognition is visual localization for autonomous driving. In this scenario, as cameras will be operating continuously, it is realistic to expect videos as an input to visual localization…

Computer Vision and Pattern Recognition · Computer Science 2020-11-05 Anh-Dzung Doan , Yasir Latif , Tat-Jun Chin , Yu Liu , Shin-Fang Ch'ng , Thanh-Toan Do , Ian Reid