Precision of subpixel measurements in videometry

Ivar Maalen-Johansen

doi:10.1117/12.169833

1 March 1994 Precision of subpixel measurements in videometry

Ivar Maalen-Johansen

Proceedings Volume 2252, Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics; (1994) https://doi.org/10.1117/12.169833
Event: Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics, 1993, Zurich, Switzerland

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.

Citation Download Citation

Ivar Maalen-Johansen "Precision of subpixel measurements in videometry", Proc. SPIE 2252, Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics, (1 March 1994); https://doi.org/10.1117/12.169833

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