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Journal of Electronic Imaging

Determination of short-term sequential scan variability in a scanner-based machine vision system for grain grading
Author(s): Muhammad A. Shahin; Annie Meng; Stephen J. Symons; Elinor Dorrian; Ujwala Manivannan
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Paper Abstract

During routine use of flatbed scanners for grading lentils, unexpected short-term variability in scanner performance was noticed. This variability was detected as scan-to-scan differences, or repeatability. This study aims at developing an objective measure of scanner repeatability to facilitate the selection of scanners by establishing performance criteria for a scanner-based vision system. Four measures of scanner repeatability were compared, using seven scanners for two types of target objects. Scanner selection for grain grading applications is discussed. For grain grading, scanner repeatability is best characterized by color variations as measured by Eq. (4), which performed better than the other three measures of repeatability. The selection of the method of determining scanner repeatability, and the tolerance thereof, are dependent upon the constraints of the imaging targets.

Paper Details

Date Published: 1 October 2004
PDF: 7 pages
J. Electron. Imaging. 13(4) doi: 10.1117/1.1792649
Published in: Journal of Electronic Imaging Volume 13, Issue 4
Show Author Affiliations
Muhammad A. Shahin, Canadian Grain Commission (Canada)
Annie Meng, Canadian Grain Commission (Canada)
Stephen J. Symons, Canadian Grain Commission (Canada)
Elinor Dorrian, Canadian Grain Commission (Canada)
Ujwala Manivannan, Canadian Grain Commission (Canada)

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