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Fr?chet Distance Based Approach for Searching Online Handwritten Documents
Curitiba, Parana, Brazil September 23-September 26
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/ICDAR.2007.121Ninth International Conference on Doc ...
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E. Sriraghavendra, Indian Institute of Science, Bangalore
Karthik K., Indian Institute of Science, Bangalore
C. Bhattacharyya, Indian Institute of Science, Bangalore
We propose a novel, language-neutral approach for searching online handwritten text using Fr?echet distance. Online handwritten data, which is available as a time series (x,y,t), is treated as representing a parameterized curve in two-dimensions and the problem of searching online hand- written text is posed as a problem of matching two curves in a two-dimensional Euclidean space. Fr?echet distance is a natural measure for matching curves. The main contribu- tion of this paper is the formulation of a variant of Fr?echet distance that can be used for retrieving words even when only a prefix of the word is given as query. Extensive ex- periments on UNIPEN dataset1 consisting of over 16,000 words written by 7 users show that our method outperforms the state-of-the-art DTW method. Experiments were also conducted on a multilingual dataset, generated on a PDA, with encouraging results. Our approach can be used to implement useful, exciting features like auto-completion of handwriting in PDAs.
Citation:
E. Sriraghavendra, Karthik K., C. Bhattacharyya, "Fr?chet Distance Based Approach for Searching Online Handwritten Documents," icdar, vol. 1, pp.461-465, Ninth International Conference on Document Analysis and Recognition (ICDAR 2007) Vol 1, 2007
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