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Fig. 12 | Heritage Science

Fig. 12

From: Extracting chain lines and laid lines from digital images of medieval paper using spectral total variation decomposition

Fig. 12

Comparison of the performance with (blue lines) and without (red lines) spectral TV decomposition on the images. In a, the chain line detection is shown. Patch taken from The Parker Library, Cambridge, Corpus Christi College, MS 81: Homer, Iliad, Odyssey. Quintus of Smyrna, Posthomerica, p. 55. In b, the laid line detection is shown. The image on the left displays laid lines detected with the spectral TV decomposition in the algorithm, the middle image shows the lines detected without the spectral TV decomposition and the image on the right has both versions overlaid. The patch is taken from Cambridge University Library, MS Ii.5.41, fol. 336r. Reproduced by kind permission of the Syndics of Cambridge University Library

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