Geometry-Aware Keypoint Network: accurate prediction of point features in challenging scenario

• Autorzy: Nowak Tomasz , Skrzypczyński Piotr

Identyfikatory

DOI

10.15439/2022F145

• Konferencja: Federated Conference on Computer Science and Information Systems (17 ; 04-07.09.2022 ; Sofia, Bulgaria)
• Języki publikacji: EN

Abstrakty

EN

In this paper, we consider a challenging scenario of localising a camera with respect to a charging station for electric buses. In this application, we face a number of problems, including a substantial scale change as the bus approaches the station, and the need to detect keypoints on a weakly textured object in a wide range of lighting and weather conditions. Therefore, we use a deep convolutional neural network to detect the features, while retaining a conventional procedure for pose estimation with 2D-to-3D associations. We leverage here the backbone of HRNet, a state-of-the-art network used for detection of feature points in human pose recognition, and we further improve the solution adding constraints that stem from the known scene geometry. We incorporate the reprojection-based geometric priors in a novel loss function for HRNet training and use the object geometry to construct sanity checks in post-processing. Moreover, we demonstrate that our Geometry-Aware Keypoint Network yields feasible estimates of the geometric uncertainty of point features. The proposed architecture and solutions are tested on a large dataset of images and trajectories collected with a real city bus and charging station under varying environmental conditions.

Słowa kluczowe

EN

geometry; uncertainty; pose estimation; urban area; lighting; computer architecture; charging station

PL

geometria; niepewność; obszar miejski; oświetlenie; stacja ładowania

• Wydawca: Polskie Towarzystwo Informatyczne
• Czasopismo: Annals of Computer Science and Information Systems
• Rocznik: 2022
• Tom: Vol. 30
• Strony: 191--200
• Opis fizyczny: Bibliogr. 35 poz., il., tab., wykr.

Twórcy

autor

Nowak Tomasz

• Institute of Robotics and Machine Intelligence Poznań University of Technology ul. Piotrowo 3A, 60-965 Poznań, Poland

autor

Skrzypczyński Piotr

• Institute of Robotics and Machine Intelligence Poznań University of Technology ul. Piotrowo 3A, 60-965 Poznań, Poland

Bibliografia

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Uwagi

1. This work is partially under the project “Advanced driver assistance system (ADAS) for precision maneuvers with single-body and articulated urban buses”, co-financed within the Smart Growth Operational Programme 2014-2020 (POIR.04.01.02-00-0081/17-01). P. Skrzypczyński is supported by TAILOR, a project funded by EU Horizon 2020 under GA No. 952215. T. Nowak is supported by PUT internal grant 0214/SBAD/0235.

2. Track 3: 4th International Workshop on Artificial Intelligence in Machine Vision and Graphics

3. Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).