Tracing and Straightening the Baseline in Handwritten Persian/Arabic Text-line: A New Approach Based on Painting-technique
Journal Title: International Journal on Computer Science and Engineering - Year 2010, Vol 2, Issue 4
Abstract
In this research work, we propose to identify an imaginary line called baseline threading through the entire stretch of text-line, with reference to which the location of vertical extents of ersian characters could be accurately interpreted. Depending upon he curvedness of the handwritten Persian text-line the aseline also would be curved. In this research a novel piece-wise inting scheme is proposed to prepare patches of black and white blocks all along the textline, identify some candidate oints, regress a curve through these candidate points to trace the baseline which is subsequently stretched straight orizontally and subsequently we de-tilt the characters to align the text-line with the horizontal imaginary baseline properly. The proposed algorithm is valuated with 108 Persian ndwritten text-lines containing 3612 subwords. Experimental analysis showed that 91.2% of the subwords are accurately aligned. Further, the proposed cheme is tested with another dataset containing 600 text-lines [13] and more accurate esults are achieved when compared with the results reported in state of the art for the same dataset. The effectiveness of aligning text-lines linearly is demonstrated through OCRing for readability of tilted printed English ext-lines and corresponding transformed text-lines, which are obtained using the proposed procedure.
Authors and Affiliations
P. Nagabhushan , Alireza Alaei
Keywords
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