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Efficient Word Segmentation and Baseline Localization in Handwritten Documents Using Isothetic Covers
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Author(s): Mousumi Dutt (Bengal Engineering and Science University, India), Aisharjya Sarkar (Bengal Engineering and Science University, India), Arindam Biswas (Bengal Engineering and Science University, India), Partha Bhowmick (Indian Institute of Technology, Kharagpur, India)and Bhargab B. Bhattacharya (Indian Statistical Institute, India)
Copyright: 2013
Pages: 12
Source title:
Modern Library Technologies for Data Storage, Retrieval, and Use
Source Author(s)/Editor(s): Chia-Hung Wei (Ching Yun University, Taiwan)
DOI: 10.4018/978-1-4666-2928-8.ch002
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Abstract
Analysis of handwritten documents is a challenging task in the modern era of document digitization. It requires efficient preprocessing which includes word segmentation and baseline detection. This paper proposes a novel approach toward word segmentation and baseline detection in a handwritten document. It is based on certain structural properties of isothetic covers tightly enclosing the words in a handwritten document. For an appropriate grid size, the isothetic covers successfully segregate the words so that each cover corresponds to a particular word. The grid size is selected by an adaptive technique that classifies the inter-cover distances into two classes in an unsupervised manner. Finally, by using a geometric heuristic with the horizontal chords of these covers, the corresponding baselines are extracted. Owing to its traversal strategy along the word boundaries in a combinatorial manner and usage of limited operations strictly in the integer domain, the method is found to be quite fast, efficient, and robust, as demonstrated by experimental results with datasets of both Bengali and English handwritings.
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