Results 251 to 260 of about 178,867 (298)
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Radiological Laser Film Scanner Sampling Artifact
SPIE Proceedings, 1988Artifacts seen on laser digitized radiographs are analyzed and mathematically explained based on the concept of image contrast. Our investigation considered the following determinants: (a) laser spot size, (b) signal processing components, (c) image characteristics, and (d) observer performance.
Y, Ishimitsu +3 more
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2017
The presented book chapter provides an overview and detailed description about actual used laser scanner systems. It explains and compares the mainly used coordinate measurement methods, like Time-of-flight, Phasing and Triangulation and Imaging.
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The presented book chapter provides an overview and detailed description about actual used laser scanner systems. It explains and compares the mainly used coordinate measurement methods, like Time-of-flight, Phasing and Triangulation and Imaging.
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SPIE Proceedings, 2013
Laser scanners are essential for scientific research, manufacturing, defense, and medical practice. Unfortunately, often times the speed of conventional laser scanners (e.g., galvanometric mirrors and acousto-optic deflectors) falls short for many applications, resulting in motion blur and failure to capture fast transient information. Here, we present
A. Mahjoubfar +14 more
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Laser scanners are essential for scientific research, manufacturing, defense, and medical practice. Unfortunately, often times the speed of conventional laser scanners (e.g., galvanometric mirrors and acousto-optic deflectors) falls short for many applications, resulting in motion blur and failure to capture fast transient information. Here, we present
A. Mahjoubfar +14 more
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2009
The aim of this dissertation is the remote assembly of a coloured 3d point cloud, derived from the Laser Scanner s measurements. The methodology included data collection, by taking measurements (four point clouds) with the Laser Scanner. Point cloud alignment, colour matching and modeling followed the above procedure.
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The aim of this dissertation is the remote assembly of a coloured 3d point cloud, derived from the Laser Scanner s measurements. The methodology included data collection, by taking measurements (four point clouds) with the Laser Scanner. Point cloud alignment, colour matching and modeling followed the above procedure.
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OSA Annual Meeting, 1993
The emphasis of this tutorial is on high performance continuous and half-tone writers. Issues such as design tradeoffs, deflector limitations, and print artifacts sources are discussed.
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The emphasis of this tutorial is on high performance continuous and half-tone writers. Issues such as design tradeoffs, deflector limitations, and print artifacts sources are discussed.
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Laser Interior Profile Scanner
SAE Technical Paper Series, 1988<div class="htmlview paragraph">An interior layout plan in the development of a new car is indispensable for investigation of safety, operability and comfortableness of a car. For efficiently carrying out the interior layout plan, it is essential to keep as data base and use analytically information on profiles of a large number of cars.
Satoshi Sugiyarna +3 more
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Handheld Laser Scanner Research
Geodesy and Cartography, 2019The authors consider hand-held laser scanners, as a new photogrammetric tool for obtaining three-dimensional models of objects. The principle of their work and the newest optical systems based on various sensors measuring the depth of space are described in detail.
A.V. Komissarov +3 more
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2011
The use of 3D scanning systems for acquiring and analyzing the external shape features of arbitrary objects has different applications in different cultural, scientific, and technological fields. In this work, 3D laser scanning techniques are used, for the first time, to our knowledge, as a novel and non-destructive application for the morphological ...
Mercedes Farjas +2 more
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The use of 3D scanning systems for acquiring and analyzing the external shape features of arbitrary objects has different applications in different cultural, scientific, and technological fields. In this work, 3D laser scanning techniques are used, for the first time, to our knowledge, as a novel and non-destructive application for the morphological ...
Mercedes Farjas +2 more
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SPIE Proceedings, 1986
A tutorial is given on the development of spinning polygon laser scanners. A new approach is introduced, eliminating both wobble and bow without cylinder optics.
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A tutorial is given on the development of spinning polygon laser scanners. A new approach is introduced, eliminating both wobble and bow without cylinder optics.
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