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Proceedings Paper

Estimator for the random error in subpixel target location and its use in the bundle adjustment
Author(s): Timothy A. Clarke; M. A. R. Cooper; John G. Fryer
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Paper Abstract

A CCD camera and frame store provide image data that are affected by a number of imperfect processes. However, most of these can be quantified or estimated. For instance, the quantization process of allocating integer values from 0 to 255 for the intensity level of each pixel has well-known statistical properties. This paper discusses how these can lead to an estimate of the precision of location of target image centroids. Two centroid algorithms are analyzed. The theory is tested against experimental and simulated data.

Paper Details

Date Published: 1 March 1994
PDF: 8 pages
Proc. SPIE 2252, Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics, (1 March 1994); doi: 10.1117/12.169832
Show Author Affiliations
Timothy A. Clarke, City Univ. London (United Kingdom)
M. A. R. Cooper, City Univ. London (United Kingdom)
John G. Fryer, Univ. of Newcastle (Australia)


Published in SPIE Proceedings Vol. 2252:
Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics
Armin Gruen; Heribert Kahmen, Editor(s)

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