Results 1 to 10 of about 15,252,222 (312)

Single-shot 3D endoscopic imaging exploiting a diffuser and neural networks [PDF]

open access: yesEPJ Web of Conferences, 2022
Lens-based endoscopes offer high lateral resolution, but suffer from rigid imaging properties, such as a fixed focal plane. We present a miniaturized 0.5 mm diameter endoscope in which the objective lens is replaced by an optical diffuser.
Lich Julian   +3 more
doaj   +1 more source

Low-cost resonant cavity Raman gas probe for multi-gas detection [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2014
Raman based gas sensing can be attractive in several industrial applications, due to its multi-gas sensing capabilities and its ability to detect O2 and N2.
Thorstensen J.   +4 more
doaj   +1 more source

A novel high accuracy 3D scanning device for rock-art sites [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
We are currently developing a novel 3D scanning device for rock-art. Within the European project 3D-Pitoti, this scanner shall be used to acquire 3D structure and radiometric surface properties of ancient rock-art sites in Valcamonica.
T. Höll, G. Holler, A. Pinz
doaj   +1 more source

Study on Noise Source Analysis and Control Method of Gas Station [PDF]

open access: yesE3S Web of Conferences, 2023
With the rapid development of economy, environmental issues have attracted more and more attention from all walks of life. As a new type of efficient energy, urban gas plays a vital role in promoting the healthy development of cities and mitigating urban
Yan Xiaowei   +4 more
doaj   +1 more source

Slime-Groove Drag Reduction Characteristics and Mechanism of Marine Biomimetic Surface

open access: yesApplied Bionics and Biomechanics, 2022
With the development of science and technology, energy consumption and demand continue to increase, and energy conservation and consumption reduction have become the primary issue facing the world.
Muhan Yan   +6 more
doaj   +1 more source

Effect of V-Shaped Groove Microstructure on Blood Flow Resistance in Bionic Artificial Blood Vessels

open access: yesApplied Bionics and Biomechanics, 2023
This study aims to investigate the blood flow in bionic artificial blood vessels and to reduce the resistance to blood flow, the drag reduction characteristics of V-shaped groove drag reduction microstructures in artificial blood vessel structures were ...
Zhou Li   +7 more
doaj   +1 more source

Effect of Bionic Nonsmooth Surface Vane on the Antiwear Characteristics of Double-Vane Pump

open access: yesApplied Bionics and Biomechanics, 2022
In order to improve the antiwear characteristics of the double-vane self-priming pump, the surface structure of the Scapharca subcrenata was extracted and reconstructed according to bionic principles.
Longbiao Ma   +5 more
doaj   +1 more source

Diffuser-based fiber endoscopy for single-shot 3D fluorescence imaging [PDF]

open access: yesEPJ Web of Conferences, 2023
Minimally invasive endoscopy using coherent fiber bundles shows great potential for numerous applications in biomedical imaging. With a diffuser on the distal side of the fiber bundle and computational image recovery, single-shot 3D imaging is possible ...
Glosemeyer Tom   +3 more
doaj   +1 more source

Efficient knowledge-aided target relocation algorithm for airborne radar

open access: yesThe Journal of Engineering, 2019
This letter addresses the problem of target relocation in wide-area ground moving target indication system. The antenna pattern information is exploited as prior knowledge to enhance the performance of airborne radar. Firstly, the ideal target relocation
Hongmeng Chen   +7 more
doaj   +1 more source

Airborne Millimeter-Wave InSAR Terrain Mapping Experiments Based on Automatic Extraction and Interferometric Calibration of Tie-Points

open access: yesRemote Sensing, 2023
Limited by meteorological conditions, airspace, complex terrain and other factors, airborne millimeter-wave InSAR will inevitably face the situation of no control point layout when acquiring terrain data in the difficult mapping areas in Southwest China,
Bin Zhang   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy