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Physically-based digital restoration...

Lin, Yun.

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Physically-based digital restoration using volumetric scanning.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Physically-based digital restoration using volumetric scanning./
Author:	Lin, Yun.
Description:	126 p.
Notes:	Adviser: W. Brent Seales.
Contained By:	Dissertation Abstracts International69-01B.
Subject:	Computer Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3298842
ISBN:	9780549433316

Physically-based digital restoration using volumetric scanning.
Lin, Yun.

Physically-based digital restoration using volumetric scanning. - 126 p.

Adviser: W. Brent Seales.

Thesis (Ph.D.)--University of Kentucky, 2007.

Keywords. Computer Graphics, Computer Vision, Historic Preservation, Digital Restoration, Opaque Documents

ISBN: 9780549433316Subjects--Topical Terms:

626642
Computer Science.

Physically-based digital restoration using volumetric scanning.
LDR:03325nam 2200325 a 45 001 947973
005 20110524
008 110524s2007 ||||||||||||||||| ||eng d
020 $a 9780549433316
035 $a (UMI)AAI3298842
035 $a AAI3298842
040 $a UMI $c UMI
100 1 $a Lin, Yun. $3 1271436
245 1 0 $a Physically-based digital restoration using volumetric scanning.
300 $a 126 p.
500 $a Adviser: W. Brent Seales.
500 $a Source: Dissertation Abstracts International, Volume: 69-01, Section: B, page: 0424.
502 $a Thesis (Ph.D.)--University of Kentucky, 2007.
520 $a Keywords. Computer Graphics, Computer Vision, Historic Preservation, Digital Restoration, Opaque Documents
520 $a Digitization has become critical to preservation, dissemination and even restoration of damaged artifacts of cultural history. There are a number of priceless documents of cultural heritage that are preserved in museums and libraries with content that is still difficult for modern scholars to see. Their opaque surfaces in rolled or folded forms, such as scrolls and bound manuscripts, prevent their content from being accessed. Physical unwrapping is usually not considered as a solution due to its destructive nature, especially for the aged and damaged materials that are in fragile condition.
520 $a This thesis develops a general approach for building a readable image of an opaque, rolled or folded document from a non-destructive volumetric scan. We use a custom high-resolution Computed Tomography (CT) scan to solve the problem of opaque document acquisition, based on an extensive analysis of the important issues specifically related to this application.
520 $a The post-processing problem is framed by localizing, constructing and manipulating a texture image induced by a surface embedded in a 3D voxel space. Algorithms are developed to localize the surface present in a scan, construct a texture map that reproduces the ink on the surface, and parameterize the convoluted surface over a 2D domain that enables a complete reading. The "virtual unwrapping", based on simulation of mass-spring system dynamics that is found on classical mechanics, preserves geometric features, such as angles and lengths, thus minimizes the distortion of text.
520 $a For preliminary testing and empirical analysis of the restoration method, we conduct a series of simulation experiments based on a CT scanner simulator. Satisfactory experimental results on replica scrolls and a real 15th manuscript from the University of Michigan's Library promise feasibility of this method. The content of the ancient manuscript revealed by our method is confirmed by posterior physical manipulation, which permanently altered the object.
520 $a This research presents novel contributions that are expected to benefit the scholarship that studies human history and culture. The vision is to apply the proposed method ultimately to precious documents and allow complete analysis of them while enforcing continued physical preservation.
590 $a School code: 0102.
650 4 $a Computer Science. $3 626642
690 $a 0984
710 2 $a University of Kentucky. $3 1017485
773 0 $t Dissertation Abstracts International $g 69-01B.
790 $a 0102
790 1 0 $a Seales, W. Brent, $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3298842