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Proceedings Paper

Characterizing challenged Minnesota ballots
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Paper Abstract

Photocopies of the ballots challenged in the 2008 Minnesota elections, which constitute a public record, were scanned on a high-speed scanner and made available on a public radio website. The PDF files were downloaded, converted to TIF images, and posted on the PERFECT website. Based on a review of relevant image-processing aspects of paper-based election machinery and on additional statistics and observations on the posted sample data, robust tools were developed for determining the underlying grid of the targets on these ballots regardless of skew, clipping, and other degradations caused by high-speed copying and digitization. The accuracy and robustness of a method based on both index-marks and oval targets are demonstrated on 13,435 challenged ballot page images.

Paper Details

Date Published: 24 January 2011
PDF: 10 pages
Proc. SPIE 7874, Document Recognition and Retrieval XVIII, 787413 (24 January 2011); doi: 10.1117/12.876558
Show Author Affiliations
George Nagy, Rensselaer Polytechnic Institute (United States)
Daniel Lopresti, Lehigh Univ. (United States)
Elisa H. Barney Smith, Boise State Univ. (United States)
Ziyan Wu, Rensselaer Polytechnic Institute (United States)


Published in SPIE Proceedings Vol. 7874:
Document Recognition and Retrieval XVIII
Gady Agam; Christian Viard-Gaudin, Editor(s)

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