Ink bleed-through removal of historical manuscripts based on hyperspectral imaging
Journal article, Peer reviewed
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OriginalversjonLecture Notes in Computer Science. 2018, 10884 LNCS 473-480. 10.1007/978-3-319-94211-7_51
Old manuscripts can be degraded by different reasons over time. The ink bleed-through from the back side of the page is a common problem which compromises the readability and the aesthetics of the document. Unsupervised bleed-through removal is a challenging task as pixel intensity of bleed-through areas can be very similar to fine-details of the writing. This paper provides a brief review about state-of-the-art methods for bleed-through removal. Moreover, we propose an algorithm for the segmentation of the bleed-through areas from a manuscript collected from the National Library of Oslo using hyperspectral imaging. This work also presents the restoration of the collected manuscript applying inpainting algorithms based on our segmentation approach.