
Proceedings Paper
Video text localization using wavelet and shearlet transformsFormat | Member Price | Non-Member Price |
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Paper Abstract
Text in video is useful and important in indexing and retrieving the video documents efficiently and accurately. In this
paper, we present a new method of text detection using a combined dictionary consisting of wavelets and a recently
introduced transform called shearlets. Wavelets provide optimally sparse expansion for point-like structures and
shearlets provide optimally sparse expansions for curve-like structures. By combining these two features we have
computed a high frequency sub-band to brighten the text part. Then K-means clustering is used for obtaining text pixels
from the Standard Deviation (SD) of combined coefficient of wavelets and shearlets as well as the union of wavelets and
shearlets features. Text parts are obtained by grouping neighboring regions based on geometric properties of the
classified output frame of unsupervised K-means classification. The proposed method tested on a standard as well as
newly collected database shows to be superior to some of the existing methods.
Paper Details
Date Published: 24 March 2014
PDF: 10 pages
Proc. SPIE 9021, Document Recognition and Retrieval XXI, 90210B (24 March 2014); doi: 10.1117/12.2036077
Published in SPIE Proceedings Vol. 9021:
Document Recognition and Retrieval XXI
Bertrand Coüasnon; Eric K. Ringger, Editor(s)
PDF: 10 pages
Proc. SPIE 9021, Document Recognition and Retrieval XXI, 90210B (24 March 2014); doi: 10.1117/12.2036077
Show Author Affiliations
Purnendu Banerjee, Society for Natural Language Technology Research (India)
B. B. Chaudhuri, Indian Statistical Institute (India)
Published in SPIE Proceedings Vol. 9021:
Document Recognition and Retrieval XXI
Bertrand Coüasnon; Eric K. Ringger, Editor(s)
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