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Registration of Ancient Manuscript Images

Praktikumsvortrag (Markus Diem)

What
When May 06, 2008
from 04:15 pm to 04:45 pm
Where Sem 183/2
Contact Name Markus Diem
Contact Email
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One medieval Slavonic manuscript is recorded, investigated and analyzed by philologists in collaboration with computer scientists. The parchment partially contains two scripts, where the first script was erased. In addition, the script is degraded due to poor storage conditions. In order to enhance the degraded script, the manuscript pages are imaged in eleven bands between 330 and 1000 nm. A registration, aligning the individual spectral images, is necessary so that further image processing algorithms can combine the information gained by the different spectral bands. Therefore, the images are coarsely aligned using rotationally invariant features and an affine transformation. Afterwards, the similarity of the different images is computed by means of the normalized cross correlation. Finally, the images are accurately mapped to each other by the local weighted mean transformation. The algorithms used for the registration and their results are presented in this report.
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