Digitalisation of Warped Documents Supported by 3D-Surface Reconstruction

Authors

  • Erik Lilienblum
  • Bernd Michaelis

DOI:

https://doi.org/10.2390/biecoll-icvs2007-69

Keywords:

surface reconstruction, light sectioning, document dewarping, cultural heritage digitalisation, DDC: 004 (Data processing, computer science, computer systems)

Abstract

The high quality digitalisation of warped documents is still a big problem for most scanner technologies. The presented work is a contribution to develop a new technique handling this problem. Basic principle of the proposed method is a special kind of light section, that works with a comparatively very broad stripe lighting by using one additional matrix camera. We can reconstruct the 3d-surface of the document by simple capturing an image sequence of the stripe lighting of a common book scanner during the scanning process. Based on a surface model we transform the warped document in a plane. Result is the two-dimensional output being a nearly distortion-free digital copy of the original warped document.

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Published

2007-12-31

Issue

Section

The 5th International Conference on Computer Vision Systems