TL;DR
This paper improves handwritten form recognition by incorporating field typing into LSTM models and generating synthetic training data, addressing real-world heterogeneity and ambiguity.
Contribution
It introduces a field typing method within an LSTM architecture and a synthetic data generation procedure for better recognition of heterogeneous handwritten forms.
Findings
Enhanced recognition accuracy on real-world forms
Effective use of synthetic data for training
Improved generalization to diverse handwriting styles
Abstract
Offline handwriting recognition has undergone continuous progress over the past decades. However, existing methods are typically benchmarked on free-form text datasets that are biased towards good-quality images and handwriting styles, and homogeneous content. In this paper, we show that state-of-the-art algorithms, employing long short-term memory (LSTM) layers, do not readily generalize to real-world structured documents, such as forms, due to their highly heterogeneous and out-of-vocabulary content, and to the inherent ambiguities of this content. To address this, we propose to leverage the content type within an LSTM-based architecture. Furthermore, we introduce a procedure to generate synthetic data to train this architecture without requiring expensive manual annotations. We demonstrate the effectiveness of our approach at transcribing text on a challenging, real-world dataset of…
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