Spatial sampling effects in Optical Character Recognition

Daniel Lopresti, Jiangying Zhou, George Nagy, Prateek Sarkar

Abstract

In this paper we shall examine the effects of random phase spatial sampling on the optical character recognition process. We start by presenting a detailed analysis in the case of 1-dimensional patterns. Empirical data demonstrate that our model is accurate. We then give experimental results for more complex, 2-dimensional patterns (i.e., printed, scanned characters). Spatial sampling seems to account for a significant amount of the variability seen in practice.

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