Sub pixel accuracy of fiducial marks using least square estimator

David J. Coumou

doi:10.1117/12.617267

15 September 2005 Sub pixel accuracy of fiducial marks using least square estimator

David J. Coumou

Proceedings Volume 5913, Signal and Data Processing of Small Targets 2005; 59131Z (2005) https://doi.org/10.1117/12.617267
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

An image processing architecture has been developed that executes a concatenated algorithm to determine the presence of multiple fiducial marks on an image plane, locates the estimated position of the fiducial marks in the image, calculates subpixel accuracy of the fiducial mark, and translates the x and y coordinates of the fiducial marks to absolute distance and phase relationships between fiducial marks. The fiducial mark is an object with an outer circular boundary and two inner lines that intersect to provide an object with symmetry. This symmetry is crucial for the requirements of rotation and scaling invariant, specifically for the process of identifying the presence of the fiducial mark in the image plane. Video is used for imagery of the fiducial marks.

Citation Download Citation

David J. Coumou "Sub pixel accuracy of fiducial marks using least square estimator", Proc. SPIE 5913, Signal and Data Processing of Small Targets 2005, 59131Z (15 September 2005); https://doi.org/10.1117/12.617267

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