A multiresolutional algorithm for halftone detection

Onur G. Guleryuz

doi:10.1117/12.596999

14 March 2005 A multiresolutional algorithm for halftone detection

Onur G. Guleryuz

Proceedings Volume 5685, Image and Video Communications and Processing 2005; (2005) https://doi.org/10.1117/12.596999
Event: Electronic Imaging 2005, 2005, San Jose, California, United States

Abstract

In this paper we present an algorithm that segments a scanned, compound document into halftone and non-halftone areas. Our work is intended as a precursor to sophisticated document processing applications (descreening, compression, document content analysis, etc.) for which undetected halftones may cause serious adverse affects. Our method is of very low computational and memory complexity and performs only a single pass on the scanned document. Halftone regions of arbitrary size and shape are detected on compound multilingual documents in a completely automated fashion without any prior knowledge on the type and resolution of the halftones to be detected. The proposed technique can be adjusted to determine halftones of particular dpi resolution or decompose detected halftones to constituent resolutions. We obtain high detection probabilities on compound multilingual documents containing halftones and fine text.

Citation Download Citation

Onur G. Guleryuz "A multiresolutional algorithm for halftone detection", Proc. SPIE 5685, Image and Video Communications and Processing 2005, (14 March 2005); https://doi.org/10.1117/12.596999

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