Please use this identifier to cite or link to this item: doi:10.22028/D291-40350
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Title: Space-Filling Curve Indices as Acceleration Structure for Exemplar-Based Inpainting
Author(s): Dahmen, Tim
Trampert, Patrick
Peter, Pascal
Bheed, Pinak
Weickert, Joachim
Slusallek, Philipp
Language: English
Publisher/Platform: arXiv
Year of Publication: 2017
DDC notations: 004 Computer science, internet
Publikation type: Other
Abstract: Exemplar-based inpainting is the process of reconstructing missing parts of an image by searching the remaining data for patches that fit seamlessly. The image is completed to a plausible-looking solution by repeatedly inserting the patch that is the best match according to some cost function. We present an acceleration structure that uses a multi-index scheme to accelerate this search procedure drastically, particularly in the case of very large datasets. The index scheme uses ideas such as dimensionality reduction and k-nearest neighbor search on space-filling curves that are well known in the field of multimedia databases. Our method has a theoretic runtime of O(log2 n) per iteration and reaches a speedup factor of up to 660 over the original method. The approach has the advantage of being agnostic to most modelbased parts of exemplar-based inpainting such as the order in which patches are processed and the cost function used to determine patch similarity. Thus, the acceleration structure can be used in conjunction with most exemplar-based inpainting algorithms.
DOI of the first publication: 10.48550/arXiv.1712.06326
URL of the first publication:
Link to this record: urn:nbn:de:bsz:291--ds-403502
Date of registration: 21-Aug-2023
Notes: Preprint
Faculty: MI - Fakultät für Mathematik und Informatik
Department: MI - Informatik
Professorship: MI - Prof. Dr. Philipp Slusallek
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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