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Optica Sensing Congress 2023, AIS, FTS, HISE, Sensors, ES 2023 - Part of Optical Sensors and Sensing Congress 2023

作者： Walter, Dominik Pitsch, Carsten Bürsing, Helge Fraunhofer Institute of Optronics System Technologies and Image Exploitation IOSB Gutleuthausstr. 1 Ettlingen76275 Germany

An advanced setup for quantum ghost imaging that features asynchronous detection enables low-noise 3D imaging of distant objects. Recent experimental results show the potential of the setup to outperform classical sys... 详细信息

ISBN: (纸本)9781957171241

关键词： Remote sensing

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Semantic Neural Radiance Fields for Multi-Date Satellite Data

Semantic Neural Radiance Fields for Multi-Date Satellite Dat...

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IEEE Winter Applications and Computer Vision Workshops (WACVW)

作者： Valentin Wagner Sebastian Bullinger Christoph Bodensteiner Michael Arens Fraunhofer Institute of Optronics System Technologies and Image Exploitation

ISBN: (数字)9798331536626

ISBN: (纸本)9798331536633

In this work we propose a satellite specific Neural Radiance Fields (NeRF) model capable to obtain a three-dimensional semantic representation (neural semantic field) of the scene. The model derives the output from a set of multi-date satellite images with corresponding pixel-wise semantic labels. We demonstrate the robustness of our approach and its capability to improve noisy input labels. We enhance the color prediction by utilizing the semantic information to address temporal image inconsistencies caused by non-stationary categories such as vehicles. To facilitate further research in this domain, we present a dataset comprising manually generated labels for popular multi-view satellite images. Our code and dataset are available at https://***/wagnva/semantic-nerf-for-satellite-data.

关键词： Training Satellites Codes image color analysis Computational modeling Semantics Neural radiance field Satellite images Noise measurement Transient analysis

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Hybrid Unsupervised Learning Strategy for Monitoring Industrial Batch Processes

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IFAC-PapersOnLine 2024年第4期58卷 634-639页

作者： Christian W. Frey Fraunhofer Institute of Optronics System Technologies and Image Exploitation IOSB Karlsruhe Germany

Industrial production processes, especially in the pharmaceutical industry, are complex systems that require continuous monitoring to ensure efficiency, product quality, and safety. This paper presents a hybrid unsupervised learning strategy (HULS) for monitoring complex industrial processes. Addressing the limitations of traditional Self-Organizing Maps (SOMs), especially in scenarios with unbalanced data sets and highly correlated process variables, HULS combines existing unsupervised learning techniques to address these challenges. To evaluate the performance of the HULS concept, comparative experiments are performed based on a laboratory batch process.

关键词： AI methods for FDI condition monitoring neural network data-driven unsupervised machine learning self-organizing maps industrial manufacturing process

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Towards a Stateless Cloud Native and Cloud Agnostic Digital Twin Platform for the Digital Product Passport: Out-of-the-box, Reliable, and Scaling 29

Towards a Stateless Cloud Native and Cloud Agnostic Digital ...

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29th IEEE International Conference on Emerging technologies and Factory Automation, ETFA 2024

作者： Redeker, Magnus Simikin, Sven Marek, Frank Fraunhofer Iosb IOSB-INA Lemgo Fraunhofer Institute of Optronics System Technologies and Image Exploitation Germany New York University Shanghai China Novatio-Solutions GmbH Germany

ISBN: (纸本)9798350361230

Interoperable digital twins (DT) simplify and automate the implementation of Industry 4.0 (I4.0) use cases like Collaborative Condition Monitoring (CCM), Product and Corporate Carbon Footprint (PCF, CCF) and the Digital Product Passport (DPP) - aiming at adaptivity, resource-efficiency, user-friendliness, compliance with legal requirements and value-creation. Platforms accelerate the development and deployment of DTs and services and ensure their resilient operation in order to capture especially all relevant shop-floor information, for example to aggregate PCFs, CCFs, and DPPs or to report on sustainability - automatically. However, platform operators should in particular avoid cloud provider lock-ins to be able to react flexibly to use case requirements at any time. The technology must be manageable and costs must be controllable. The aim is to achieve a break-even point between security, costs, future viability and controllability, short implementation time and motivated use. Such requirements can currently only be met with cloud infrastructures. An agnostic design ensures that switching infrastructures is possible and can be done both securely and quickly. To this end, this paper develops an out-of-the-box cloud native and cloud agnostic DT platform providing specialized, stateless, loosely coupled DT services interacting within a service mesh. The developed platform meets the requirements, can easily be executed in any public, private and hybrid cloud, and can be scaled horizontally without any further ado. © 2024 IEEE.

关键词： Cloud platforms

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Concept and Design of a Prototype Autonomous, Modular Subsea Bottom Station

Concept and Design of a Prototype Autonomous, Modular Subsea...

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2023 MTS/IEEE U.S. Gulf Coast, OCEANS 2023

作者： Rautmann, Louis Leon Witte, Jan Emter, Thomas Ahmed, Minhaz Rieck, Burkhard Renkewitz, Helge Kosleck, Sascha University of Rostock Dept. of Ocean Engineering Rostock Germany Fraunhofer Institute of Optronics System Technologies and Image Exploitation Iosb Karlsruhe Germany Fraunhofer Institute for Silicon Technology Isit Itzehoe Germany Evologics GmbH Berlin Germany Fraunhofer Institute of Optronics System Technologies and Image Exploitation IOSB-AST Ilmenau Germany

ISBN: (纸本)9798218142186

This paper deals with the introduction of a novel concept of a customisable, modular and autonomous subsea bottom station (BASE). The subsea station will be supported by a floating surface unit ensuring cloud data connection as well as including MEMS-based energy harvesting and spaces for additional sensors. The concept not only serves as a long-term survey station or lander in the classical sense. It shall also operate as the main hub for a future underwater communications network and as a service station for underwater vehicles, such as AUVs, operating in the area. This paper aims to introduce the overall system and to showcase concepts of selected subsystems. © 2023 The Marine Technology Society (MTS).

关键词： Data acquisition

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Semantic Neural Radiance Fields for Multi-Date Satellite Data

Semantic Neural Radiance Fields for Multi-Date Satellite Dat...

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2025 IEEE/CVF Winter Conference on Applications of Computer Vision Workshops, WACVW 2025

作者： Wagner, Valentin Bullinger, Sebastian Bodensteiner, Christoph Arens, Michael Fraunhofer Institute of Optronics System Technologies and Image Exploitation Germany

ISBN: (纸本)9798331536626

关键词： image enhancement

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Semantic Neural Radiance Fields for Multi-Date Satellite Data

arXiv

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arXiv 2025年

作者： Wagner, Valentin Bullinger, Sebastian Bodensteiner, Christoph Arens, Michael Fraunhofer Institute of Optronics System Technologies and Image Exploitation Germany

关键词： Satellite imagery

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Spectral and spatial filtering for daytime deep-space optical communications

Spectral and spatial filtering for daytime deep-space optica...

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2022 International Conference on Space Optics, ICSO 2022

作者： Gladysz, Szymon Bellossi, Raphael Zepp, Andreas McDonald, Douglas Segel, Max Mackey, Ruth Fitzgerald, Niamh Stein, Karin Fraunhofer IOSB Ettlingen Fraunhofer Institute of Optronics System Technologies and Image Exploitation Gutleuthausstr. 1 Ettlingen76275 Germany mBryonics Ltd Galway Ireland

ISBN: (纸本)9781510668034

In deep-space optical communications, one particular challenge encountered at the ground receiver side are the wavefront deformations caused by atmospheric turbulence. This gives rise to reduced signal-to-background ratios and signal fades, especially during daytime. Background rejection is therefore a fundamental requirement for optical links operating in the low-photon-count regime with a strong solar background. Both, spectral and spatial filtering subsystems are essential for this application. To this end, we have analyzed several spectral filters and wavefront sensing approaches. In laboratory experiments, a combination of a bandpass filter and a Fabry-Pérot etalon delivered the required bandwidth of 0.17 nm and transmission of 90%, while a SWIR Shack-Hartmann sensor, combined with custom-built wavefront reconstruction software, directed the adaptive optics loop. We have obtained improvements in the Strehl ratio for signal-to-background ratios down to 0.2. © 2023 SPIE. All rights reserved.

关键词： Adaptive optics

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Impact of highly varying incidence angle on the feature space of polsar images 14

Impact of highly varying incidence angle on the feature spac...

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14th European Conference on Synthetic Aperture Radar, EUSAR 2022

作者： Schmitz, Sylvia Thiele, Antje Hammer, Horst Hinz, Stefan Germany Fraunhofer IOSB Ettlingen Fraunhofer Institute of Optronics System Technologies and Image Exploitation IOSB Germany

ISBN: (纸本)9783800758234

The high variation of the incidence angle in airborne SAR data poses challenges for the development of classification, clustering or parameter retrieval approaches, due to its influence on the measurable radar response. This paper presents an analysis of the influence of varying incidence angle on features derived from fully polarimetric airborne SAR data. The considered features include backscattering coefficients in each polarization and features derived from model-based and eigenvalue decomposition, whose behavior is investigated with respect to dominant scattering mechanisms and land cover class. The analysis reveals that the impact of the incidence angle on the radar response differs between features and the type of observed scatterers. Comparing surface, double-bounce and volume scattering, it is demonstrated that radar responses dominated by surface scattering are most affected. To visualize the influence of the incidence angle on the entire feature set, the dimensionality reduction method Uniform Manifold Approximation and Projection (UMAP) is applied. The representation in the reduced feature space allows capturing in which way the appearance as well as the separability of different land cover classes change with varying incidence angle. © 2022 institute of Electrical and Electronics Engineers Inc.. All rights reserved.

关键词： Surface scattering

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Gaze-Enhanced User Interface for Real-Time Video Surveillance 24th

Gaze-Enhanced User Interface for Real-Time Video Surveillanc...

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24th International Conference on Human-Computer Interaction, HCII 2022

作者： Hild, Jutta Holzbach, Gerrit Maier, Sebastian van de Camp, Florian Voit, Michael Peinsipp-Byma, Elisabeth Fraunhofer Institute of Optronics System Technologies and Image Exploitation IOSB Karlsruhe76131 Germany

ISBN: (纸本)9783031196782

image analysis is a demanding task, particularly, if real-time analysis of motion imagery is required. Hence, the human image analysts needs assistance by a customized software system. In this contribution, a user interface for real-time video surveillance is proposed. The objective is to provide a concept that enables a single user to perform sensor operation and basic observation and detection tasks at the same time. In order to provide efficient and comfortable support, our approach enhances the typical joystick input with gaze input and automated image exploitation algorithms;an alternative concept uses a gamepad instead of the joystick. First qualitative assessment by expert video analysts identified different advantages of the different concepts. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： User interfaces

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