Results 1 to 10 of about 224,858 (315)

HIGH DYNAMIC RANGE IMAGE COMPRESSION ON COMMODITY HARDWARE FOR REAL-TIME MAPPING APPLICATIONS [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
This paper describes a lossy compression scheme for high dynamic range graylevel and color imagery for data transmission purposes in real-time mapping scenarios.
D. Frommholz, D. Hein, M. Bock
doaj   +1 more source

ON THE ACCURACY OF YOLOV8-CNN REGARDING DETECTION OF HUMANS IN NADIR AERIAL IMAGES FOR SEARCH AND RESCUE APPLICATIONS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
The use of deep learning techniques especially in conjunction with convolutional neural networks (CNN) has attracted major attention of the remote sensing community. Main use cases are object detection, image classification and image segmentation.
J. Berndt, H. Meißner, T. Kraft
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Roadmap on optical sensors

Journal of Optics, 2023
Abstract Optical sensors and sensing technologies are playing a more and more important role in our modern world. From micro-probes to large devices used in such diverse areas like medical diagnosis, defence, monitoring of industrial and environmental conditions, optics can be used in a variety of ways to achieve compact, low cost, stand-
Mário F S Ferreira, Gilberto Brambilla, Luc Thévenaz, Xian Feng, Lei Zhang, Misha Sumetsky, Callum Jones, Srikanth Pedireddy, Frank Vollmer, Peter D Dragic, Ori Henderson-Sapir, David J Ottaway, Elodie Strupiechonski, Goretti G Hernandez-Cardoso, Arturo I Hernandez-Serrano, Francisco J González, Enrique Castro Camus, Alexis Méndez, Paola Saccomandi, Qimin Quan, Zhongcong Xie, Björn M Reinhard, Max Diem   +22 more
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SURVEY ACCURACY AND SPATIAL RESOLUTION BENCHMARK OF A CAMERA SYSTEM MOUNTED ON A FAST FLYING DRONE [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Many drones are used to obtain high resolution imagery. Subsequent 3D object point derivation from images of these systems is an established technique.
H. Meißner, K. Stebner, T. Kraft, M. Geßner, R. Berger   +4 more
doaj   +1 more source

Sensor-Guided Optical Flow [PDF]

2021 IEEE/CVF International Conference on Computer Vision (ICCV), 2021
This paper proposes a framework to guide an optical flow network with external cues to achieve superior accuracy either on known or unseen domains. Given the availability of sparse yet accurate optical flow hints from an external source, these are injected to modulate the correlation scores computed by a state-of-the-art optical flow network and guide ...
M. Poggi, F. Aleotti, S. Mattoccia
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EXTRACTING SEMANTICALLY ANNOTATED 3D BUILDING MODELS WITH TEXTURES FROM OBLIQUE AERIAL IMAGERY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
This paper proposes a method for the reconstruction of city buildings with automatically derived textures that can be directly used for façade element classification.
D. Frommholz, M. Linkiewicz, H. Meissner, D. Dahlke, A. Poznanska   +4 more
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RECONSTRUCTING BUILDINGS WITH DISCONTINUITIES AND ROOF OVERHANGS FROM OBLIQUE AERIAL IMAGERY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
This paper proposes a two-stage method for the reconstruction of city buildings with discontinuities and roof overhangs from oriented nadir and oblique aerial images.
D. Frommholz, M. Linkiewicz, H. Meissner, D. Dahlke   +3 more
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CALIBRATING PHOTOGRAMMETRIC AIRBORNE CAMERA SYSTEMS WITH DIFFRACTIVE OPTICAL ELEMENTS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
This paper presents a laboratory approach for geometric calibration of airborne camera systems. The setup uses an incoming laser beam, which is split by Diffractive Optical Elements (DOE) into a number of beams with precisely-known propagation directions.
D. Dahlke, M. Geßner, H. Meißner, K. Stebner, D. Grießbach, R. Berger, A. Börner   +6 more
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Roadmap on optical sensors [PDF]

Journal of Optics, 2017
Sensors are devices or systems able to detect, measure and convert magnitudes from any domain to an electrical one. Using light as a probe for optical sensing is one of the most efficient approaches for this purpose. The history of optical sensing using some methods based on absorbance, emissive and florescence properties date back to the 16th century.
Ferreira, M.F.S., Castro-Camus, E., Ottaway, D.J., López-Higuera, J.M., Feng, X., Jin, W., Jeong, Y., Picqué, N., Tong, L., Reinhard, B.M., Pellegrino, P.M., Méndez, A., Diem, M., Vollmer, F., Quan, Q.   +14 more
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Seamless Navigation, 3D Reconstruction, Thermographic and Semantic Mapping for Building Inspection

Sensors, 2022
We present a workflow for seamless real-time navigation and 3D thermal mapping in combined indoor and outdoor environments in a global reference frame. The automated workflow and partly real-time capabilities are of special interest for inspection tasks ...
Adrian Schischmanow, Dennis Dahlke, Dirk Baumbach, Ines Ernst, Magdalena Linkiewicz   +4 more
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