Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Gerd Häusler"'
Autor:
Gerd Häusler, Florian Willomitzer
Publikováno v:
Light: Advanced Manufacturing. 3:1
Publikováno v:
Advanced Optical Technologies. 5:433-438
Phase-measuring deflectometry (PMD) has become a standard tool to measure the topography of specular surfaces. We implemented PMD for the measurement of the human cornea topography, exploiting an earlier idea of Lingelbach et al. Two problems occur:
Autor:
Gerd Häusler
Publikováno v:
Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP).
Nature's limits are precious: they often reveal uncertainty products connecting coherence, resolution, precision, channel capacity... So we can bargain with nature for "optimal" 3D sensors with novel features or just better precision, resolution, spe
Publikováno v:
Speckle 2018: VII International Conference on Speckle Metrology.
We are motivated by the question if scanning laser projection with low speckle noise is possible. Scanning laser projection requires “instantaneous” speckle reduction, within a few nanoseconds – meaning that no moving diffusors can be used. We
Autor:
Florian Willomitzer, Gerd Häusler
Publikováno v:
Imaging and Applied Optics 2018 (3D, AO, AIO, COSI, DH, IS, LACSEA, LS&C, MATH, pcAOP).
We introduce a novel sensor for the 3D acquisition of macroscopic live scenes. The sensor combines single-shot acquisition with a precision and point cloud density close to the theoretical maximum.
Autor:
Gerd Häusler, Pavel Pavliček
Publikováno v:
International Journal of Optomechatronics. 8:292-303
There is a wide spectrum of optical 3-D sensors based on only a few basic principles. We calculate the measurement uncertainty for several “paradigm” methods, by means of the Cramer-Rao lower bound. It turns out that when all other sources of noi
Publikováno v:
Advanced Optical Technologies. 3:335-343
We discuss the inspection of large-sized, spherical mirror tiles by ‘Phase Measuring Deflectometry’ (PMD). About 10 000 of such mirror tiles, each satisfying strict requirements regarding the spatial extent of the point-spread-function (PSF), are
Autor:
Gerd Häusler, Florian Willomitzer
We introduce a method and a 3D-camera for single-shot 3D shape measurement, with unprecedented features: The 3D-camera does not rely on pattern codification and acquires object surfaces at the theoretical limit of the information efficiency: Up to 30
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::060d552d6d9862c6354fed1332b38968
http://arxiv.org/abs/1605.02119
http://arxiv.org/abs/1605.02119
Publikováno v:
ICCP
This talk will discuss (from the viewpoint of a physicist with background in optical engineering and information) how much imaging and how much computing is (or should be) in computational imaging, aiming for high information efficiency. For an optic
Publikováno v:
Applied optics. 55(7)
Three-dimensional (3D) inspection in the factory requires precision and speed. While customers can select from a wide spectrum of high-precision sensors, the real challenge today is "speed." We discuss the speed of 3D sensors in a general context to