Best angle to orient two intersecting lines

Abdul A. S. Awwal; Walter S. Ferguson; Pete B. Shull

doi:10.1117/12.682656

8 September 2006 Best angle to orient two intersecting lines

Abdul A. S. Awwal, Walter S. Ferguson, Pete B. Shull

Proceedings Volume 6310, Photonic Devices and Algorithms for Computing VIII; 63100S (2006) https://doi.org/10.1117/12.682656
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

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.

Citation Download Citation

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); https://doi.org/10.1117/12.682656

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