Paper
15 September 2005 Hough transform based corner detection for laser beam positioning
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Abstract
In laser beam alignment in addition to detecting position, one must also determine the rotation of the beam. This is essential when a commissioning new laser beam for National Ignition Facility located at the Lawrence Livermore National Laboratory. When the beam is square, the positions of the corners with respect to one another provides an estimate of the rotation of the beam. This work demonstrates corner detection in the presence or absence of a second order non-uniform illumination caused by a spatial mask. The Hough transform coupled with illumination dependent pre-processing is used to determine the corner points. We show examples from simulated and real NIF images.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Abdul A. S. Awwal "Hough transform based corner detection for laser beam positioning", Proc. SPIE 5907, Photonic Devices and Algorithms for Computing VII, 59070I (15 September 2005); https://doi.org/10.1117/12.621315
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Cited by 1 scholarly publication.
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KEYWORDS
Hough transforms

Image processing

Corner detection

National Ignition Facility

Fusion energy

Image filtering

Image quality

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