Parameter calibration for synthesizing realistic-looking variability in offline handwriting

Wen Cheng; Dan Lopresti

doi:10.1117/12.873431

24 January 2011 Parameter calibration for synthesizing realistic-looking variability in offline handwriting

Wen Cheng, Dan Lopresti

Proceedings Volume 7874, Document Recognition and Retrieval XVIII; 78740Y (2011) https://doi.org/10.1117/12.873431
Event: IS&T/SPIE Electronic Imaging, 2011, San Francisco Airport, California, United States

Abstract

Motivated by the widely accepted principle that the more training data, the better a recognition system performs, we conducted experiments asking human subjects to do evaluate a mixture of real English handwritten text lines and text lines altered from existing handwriting with various distortion degrees. The idea of generating synthetic handwriting is based on a perturbation method by T. Varga and H. Bunke that distorts an entire text line. There are two purposes of our experiments. First, we want to calibrate distortion parameter settings for Varga and Bunke's perturbation model. Second, we intend to compare the effects of parameter settings on different writing styles: block, cursive and mixed. From the preliminary experimental results, we determined appropriate ranges for parameter amplitude, and found that parameter settings should be altered for different handwriting styles. With the proper parameter settings, it should be possible to generate large amount of training and testing data for building better off-line handwriting recognition systems.

Citation Download Citation

Wen Cheng and Dan Lopresti "Parameter calibration for synthesizing realistic-looking variability in offline handwriting", Proc. SPIE 7874, Document Recognition and Retrieval XVIII, 78740Y (24 January 2011); https://doi.org/10.1117/12.873431

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