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Proceedings Paper

Precision of subpixel measurements in videometry
Author(s): Ivar Maalen-Johansen
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Paper Abstract

Investigations have been carried out on the precision of target location in digital images to determine the influence of spatial and intensity quantization and threshold levels. Circular targets and centroiding methods are used in the study, and deviations from ideal images of the targets cause considerable loss of precision. Under favorable conditions, the precision of location was found to be better than 0.02 pixel size in both the x and y directions. The precision varies with several hundred percent according to the choice of the quantization parameters.

Paper Details

Date Published: 1 March 1994
PDF: 10 pages
Proc. SPIE 2252, Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics, (1 March 1994); doi: 10.1117/12.169833
Show Author Affiliations
Ivar Maalen-Johansen, Agricultural Univ. of Norway (Norway)


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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