Document image decoding using Markov source models

1993 ◽  
Author(s):  
Gary E. Kopec ◽  
Philip A. Chou
Keyword(s):  
Document Image ◽  
Markov Source ◽  
Source Models ◽  
Image Decoding

N-gram language models for document image decoding

2001 ◽  
Author(s):  
Gary E. Kopec ◽  
Maya R. Said ◽  
Kris Popat
Keyword(s):  
Document Image ◽  
Language Models ◽  
N Gram ◽  
Image Decoding

scholarly journals Domain Adaptation for Document Image Binarization via Domain Classification

2021 ◽  
Author(s):  
Carlos Garrido-Munoz ◽  
Adrián Sánchez-Hernández ◽  
Francisco J. Castellanos ◽  
Jorge Calvo-Zaragoza
Keyword(s):  
Domain Adaptation ◽  
Adaptation Strategy ◽  
Document Image ◽  
Target Domain ◽  
Current State ◽  
Document Image Binarization ◽  
Initial Hypothesis ◽  
Source Models ◽  
Target Set ◽  
Multiple Domains

Binarization represents a key role in many document image analysis workflows. The current state of the art considers the use of supervised learning, and specifically deep neural networks. However, it is very difficult for the same model to work successfully in a number of document styles, since the set of potential domains is very heterogeneous. We study a multi-source domain adaptation strategy for binarization. Within this scenario, we look into a novel hypothesis where a specialized binarization model must be selected to be used over a target domain, instead of a single model that tries to generalize across multiple domains. The problem then boils down to, given several specialized models and a new target set, deciding which model to use. We propose here a simple way to address this question by using a domain classifier, that estimates which of the source models must be considered to binarize the new target domain. Our experiments on several datasets, including different text styles and music scores, show that our initial hypothesis is quite promising, yet the way to deal with the decision of which model to use still shows great room for improvement.

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