30 March 1995 Design and application of binary differencing filters
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For given binary image and degradation processes, an optimal mean-absolute-error translation- invariant filter can be designed via the representation of such filters as a union of morphological hit-or-miss transforms. The present paper investigates a different optimization methodology by representing translation-invariant filters as differencing filters. Rather than employing structuring templates to build the entire output image, as is done with direct hit-or- miss representation, differencing filters only employ templates that locate value flips (black-to- white or white-to-black). Differencing filters play a central role in several digital document processing tasks. It is shown how differencing filters are statistically designed and applied for image restoration and resolution conversion.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert P. Loce, Edward R. Dougherty, "Design and application of binary differencing filters", Proc. SPIE 2422, Document Recognition II, (30 March 1995); doi: 10.1117/12.205835; https://doi.org/10.1117/12.205835

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