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Indoor positioning and navigation inside an area with no GPS-data availability is a challenging problem. There are applications such as augmented reality, autonomous driving, navigation of drones inside tunnels, in which indoor positioning…

Computer Vision and Pattern Recognition · Computer Science 2019-10-15 Ali Ghofrani , Rahil Mahdian Toroghi , Sayed Mojtaba Tabatabaie

Inferring the 6DoF pose of an object from a single RGB image is an important but challenging task, especially under heavy occlusion. While recent approaches improve upon the two stage approaches by training an end-to-end pipeline, they do…

Computer Vision and Pattern Recognition · Computer Science 2020-11-24 Anshul Gupta , Joydeep Medhi , Aratrik Chattopadhyay , Vikram Gupta

We present a learning-based method for 6 DoF pose estimation of rigid objects in point cloud data. Many recent learning-based approaches use primarily RGB information for detecting objects, in some cases with an added refinement step using…

Computer Vision and Pattern Recognition · Computer Science 2020-06-18 Frederik Hagelskjær , Anders Glent Buch

Recent works on 6D object pose estimation focus on learning keypoint correspondences between images and object models, and then determine the object pose through RANSAC-based algorithms or by directly regressing the pose with end-to-end…

Computer Vision and Pattern Recognition · Computer Science 2023-10-04 Jaime Corsetti , Davide Boscaini , Fabio Poiesi

Monocular 6D pose estimation is a fundamental task in computer vision. Existing works often adopt a two-stage pipeline by establishing correspondences and utilizing a RANSAC algorithm to calculate 6 degrees-of-freedom (6DoF) pose. Recent…

Computer Vision and Pattern Recognition · Computer Science 2022-04-22 Tuo Cao , Fei Luo , Yanping Fu , Wenxiao Zhang , Shengjie Zheng , Chunxia Xiao

Camera localization is a fundamental and key component of autonomous driving vehicles and mobile robots to localize themselves globally for further environment perception, path planning and motion control. Recently end-to-end approaches…

Computer Vision and Pattern Recognition · Computer Science 2020-05-14 Mi Tian , Qiong Nie , Hao Shen

We seek to predict the 6 degree-of-freedom (6DoF) pose of a query photograph with respect to a large indoor 3D map. The contributions of this work are three-fold. First, we develop a new large-scale visual localization method targeted for…

Computer Vision and Pattern Recognition · Computer Science 2018-04-10 Hajime Taira , Masatoshi Okutomi , Torsten Sattler , Mircea Cimpoi , Marc Pollefeys , Josef Sivic , Tomas Pajdla , Akihiko Torii

Despite recent advances on the topic of direct camera pose regression using neural networks, accurately estimating the camera pose of a single RGB image still remains a challenging task. To address this problem, we introduce a novel…

Computer Vision and Pattern Recognition · Computer Science 2019-10-29 Mai Bui , Christoph Baur , Nassir Navab , Slobodan Ilic , Shadi Albarqouni

Compared to 2D object bounding-box labeling, it is very difficult for humans to annotate 3D object poses, especially when depth images of scenes are unavailable. This paper investigates whether we can estimate the object poses effectively…

Computer Vision and Pattern Recognition · Computer Science 2021-04-09 Zongxin Yang , Xin Yu , Yi Yang

We address the problem of keypoint selection, and find that the performance of 6DoF pose estimation methods can be improved when pre-defined keypoint locations are learned, rather than being heuristically selected as has been the standard…

Computer Vision and Pattern Recognition · Computer Science 2023-11-13 Yangzheng Wu , Michael Greenspan

Rectifying the orientation of images represents a daily task for every photographer. This task may be complicated even for the human eye, especially when the horizon or other horizontal and vertical lines in the image are missing. In this…

Computer Vision and Pattern Recognition · Computer Science 2021-05-13 Ionut Mironica , Andrei Zugravu

Camera pose estimation or camera relocalization is the centerpiece in numerous computer vision tasks such as visual odometry, structure from motion (SfM) and SLAM. In this paper we propose a neural network approach with a graph transformer…

Computer Vision and Pattern Recognition · Computer Science 2021-06-01 Xinyi Li , Haibin Ling

Deep learning has been applied to camera relocalization, in particular, PoseNet and its extended work are the convolutional neural networks which regress the camera pose from a single image. However there are many problems, one of them is…

Robotics · Computer Science 2018-02-27 Qiang Fang , Tianjiang Hu

We present a new method to relocalize the 6DOF pose of an event camera solely based on the event stream. Our method first creates the event image from a list of events that occurs in a very short time interval, then a Stacked Spatial LSTM…

Computer Vision and Pattern Recognition · Computer Science 2019-07-10 Anh Nguyen , Thanh-Toan Do , Darwin G. Caldwell , Nikos G. Tsagarakis

Visual (re)localization addresses the problem of estimating the 6-DoF (Degree of Freedom) camera pose of a query image captured in a known scene, which is a key building block of many computer vision and robotics applications. Recent…

Computer Vision and Pattern Recognition · Computer Science 2022-08-16 Siyan Dong , Shuzhe Wang , Yixin Zhuang , Juho Kannala , Marc Pollefeys , Baoquan Chen

We present RePOSE, a fast iterative refinement method for 6D object pose estimation. Prior methods perform refinement by feeding zoomed-in input and rendered RGB images into a CNN and directly regressing an update of a refined pose. Their…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Shun Iwase , Xingyu Liu , Rawal Khirodkar , Rio Yokota , Kris M. Kitani

Camera relocalization involving a prior 3D reconstruction plays a crucial role in many mixed reality and robotics applications. Estimating the camera pose directly with respect to pre-built 3D models can be prohibitively expensive for…

Computer Vision and Pattern Recognition · Computer Science 2022-12-06 Thuan B. Bui , Dinh-Tuan Tran , Joo-Ho Lee

In this paper, we propose an encoder-decoder convolutional neural network (CNN) architecture for estimating camera pose (orientation and location) from a single RGB-image. The architecture has a hourglass shape consisting of a chain of…

Computer Vision and Pattern Recognition · Computer Science 2017-08-25 Iaroslav Melekhov , Juha Ylioinas , Juho Kannala , Esa Rahtu

We propose a new flexible deep convolutional neural network (convnet) to perform fast visual style transfer. In contrast to existing convnets that address the same task, our architecture derives directly from the structure of the gradient…

Computer Vision and Pattern Recognition · Computer Science 2018-06-15 Gilles Puy , Patrick Pérez

Absolute camera pose regressors estimate the position and orientation of a camera given the captured image alone. Typically, a convolutional backbone with a multi-layer perceptron (MLP) head is trained using images and pose labels to embed…

Computer Vision and Pattern Recognition · Computer Science 2023-08-24 Yoli Shavit , Ron Ferens , Yosi Keller
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