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arXiv · 1912.12168

Intra-Variable Handwriting Inspection Reinforced with Idiosyncrasy Analysis

Chandranath Adak·Bidyut B. Chaudhuri·Chin-Teng Lin·Michael Blumenstein
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Abstract

In this paper, we work on intra-variable handwriting, where the writing samples of an individual can vary significantly. Such within-writer variation throws a challenge for automatic writer inspection, where the state-of-the-art methods do not perform well. To deal with intra-variability, we analyze the idiosyncrasy in individual handwriting. We identify/verify the writer from highly idiosyncratic text-patches. Such patches are detected using a deep recurrent reinforcement learning-based architecture. An idiosyncratic score is assigned to every patch, which is predicted by employing deep regression analysis. For writer identification, we propose a deep neural architecture, which makes the final decision by the idiosyncratic score-induced weighted average of patch-based decisions. For writer verification, we propose two algorithms for patch-fed deep feature aggregation, which assist in authentication using a triplet network. The experiments were performed on two databases, where we obtained encouraging results.

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Chandranath Adak, Bidyut B. Chaudhuri, Chin-Teng Lin, Michael Blumenstein. 2019-12-19. Intra-Variable Handwriting Inspection Reinforced with Idiosyncrasy Analysis. https://doi.org/10.1109/tifs.2020.2991833

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