Masters Theses
Abstract
"The use of paper sheet counters is widespread in the printing industry. These counters range from very exact to an approximate means of counting the number of sheets in a stack. The development of a page counter that used optical methods could benefit the printing industry due to its non-invasive nature. This thesis focuses on using direct imaging techniques to produce a waveform whose peaks represent individual sheets in a stack..
A preliminary investigation of paper edges was conducted in order to determine what characteristics might impede the capture of a reliable waveform. It will be shown that a number of surface features are capable of interfering with the detection of the barriers between sheets. It will also be shown that these features are not restricted to specific categories of paper. Specifically, the effect of compression on a paper stack will be emphasized.
It was considered that the effects of compression might be minimized if a sufficient magnification were used. However, the depth of field required to maintain a recognizable image makes the use of microscope objectives impractical. The use of a thin lens to increase the depth of field will be explored. Experiments will show that while the depth of field is increased, a resulting reduction in image quality is observed. This reduction contributes to a lack of contrast required to produce a reliable signal. While this imaging technique may not be sufficient on it own, it might be used in conjunction with image processing to compensate for the effects of compression"--Abstract, page iii.
Advisor(s)
Watkins, Steve Eugene, 1960-
Committee Member(s)
Wu, Cheng-Hsiao
Story, J. Greg
Department(s)
Electrical and Computer Engineering
Degree Name
M.S. in Electrical Engineering
Publisher
University of Missouri--Rolla
Publication Date
Spring 2004
Pagination
ix, 51 pages
Note about bibliography
Includes bibliographical references (page 50).
Rights
© 2004 Jason Michael Young, All rights reserved.
Document Type
Thesis - Restricted Access
File Type
text
Language
English
Subject Headings
Optical detectorsPaper -- Analysis
Thesis Number
T 8430
Print OCLC #
55223398
Recommended Citation
Young, Jason Michael, "A page counter using non-invasive optical techniques" (2004). Masters Theses. 4426.
https://scholarsmine.mst.edu/masters_theses/4426
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