Application of Fourier descriptors to the unconstrained handwritten digit recognition

Yi Lu; Steven G. Schlosser; Michael Janeczko

doi:10.1117/12.58062

1 April 1992 Application of Fourier descriptors to the unconstrained handwritten digit recognition

Yi Lu, Steven G. Schlosser, Michael Janeczko

Proceedings Volume 1623, The 20th AIPR Workshop: Computer Vision Applications: Meeting the Challenges; (1992) https://doi.org/10.1117/12.58062
Event: The 20th AIPR Workshop, 1991, McLean, VA, United States

Abstract

This paper presents the results of a comparative study of various Fourier descriptor representations and their use in the recognition of unconstrained handwritten digits. Certain characteristics of five Fourier descriptor representations of handwritten digits are discussed, and illustrations of ambiguous digit classes introduced by use of these Fourier descriptor representations are presented. It is concluded that Fourier descriptors are practically effective only within the framework of an intelligent system capable of reasoning about digit hypotheses. We describe a hypothesis-generating algorithm based on Fourier descriptors which allows the classifier to associate more than one possible digit class with each input. Such hypothesis-generating schemes can be very effective in systems employing multiple classifiers. We compare the performance of the five Fourier descriptor representations based on experiment results produced by the hypothesis-generating classifier for a test set of 14,000 handwritten digits. It is found that some Fourier descriptor formulations are more successful than others for handwritten digit recognition.

Citation Download Citation

Yi Lu, Steven G. Schlosser, and Michael Janeczko "Application of Fourier descriptors to the unconstrained handwritten digit recognition", Proc. SPIE 1623, The 20th AIPR Workshop: Computer Vision Applications: Meeting the Challenges, (1 April 1992); https://doi.org/10.1117/12.58062

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KEYWORDS

Transform theory

Optical coherence tomography

Classification systems

Intelligence systems

Reliability

Associative arrays

Distance measurement

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