Computer aided restoration of handwritten character strokes

Barak Sober*, David Levin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

This work suggests a new variational approach to the task of computer aided segmentation and restoration of incomplete characters, residing in a highly noisy document image. We model character strokes as the movement of a pen with a varying radius. Following this model, in order to fit the digital image, a cubic spline representation is being utilized to perform gradient descent steps, while maintaining interpolation at some initial (manually sampled) points. The proposed algorithm was used in the process of restoring approximately 1000 ancient Hebrew characters (dating to ca. 8th–7th century BCE), some of which are presented herein and show that the algorithm yields plausible results when applied on deteriorated documents.

Original languageEnglish
Pages (from-to)12-24
Number of pages13
JournalCAD Computer Aided Design
Volume89
DOIs
StatePublished - 1 Aug 2017

Funding

FundersFunder number
Israel Science Foundation F.I.R.S.T.644/08
Seventh Framework Programme
European Research Council229418
Israel Science Foundation1457/13
Tel Aviv University
Seventh Framework Programme

    Keywords

    • Computer aided design
    • First temple period
    • Hebrew ostraca
    • Historical document analysis

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