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8 September 2006 Best angle to orient two intersecting lines
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Fiducials in the form of intersecting straight lines are used to align the target in the final target chamber of the National Ignition Facility of Lawrence Livermore National Laboratory. One of the techniques used to locate these lines is the Hough transform. When two lines intersect at a 90 degree angle, it is tempting to orient the lines to horizontal and vertical directions. There are other possible angles at which the lines may be oriented. One question that arises while designing the fiducials is whether there is a preferred angle or range of angles that leads to higher accuracy. This work attempts to answer this question through detailed computer simulation.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Abdul A. S. Awwal, Walter S. Ferguson, and Pete B. Shull "Best angle to orient two intersecting lines", Proc. SPIE 6310, Photonic Devices and Algorithms for Computing VIII, 63100S (8 September 2006);

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