Program for practical studying of graphs

This paper describes a program that was written to help students better learn the material on the graph theory. The article also contains a summary of the graphs, some algorithms and graph theory

Payment receipts image processing for data input automation with mobile devices

In this paper we propose an approach for payment receipts image processing obtained from the camera mobile devices. The main steps of the algorithm and the experimental results are presented

Precision and Recall Without Ground Truth

International audienceIn this paper we present a way to use precision and recall measures in total absence of ground truth

An MRF Model for Binarization of Natural Scene Text

International audienceInspired by the success of MRF models for solving object segmentation problems, we formulate the binarization problem in this framework. We represent the pixels in a document image as random variables in an MRF, and introduce a new energy (or cost) function on these variables. Each variable takes a foreground or background label, and the quality of the binarization (or labelling) is determined by the value of the energy function. We minimize the energy function, i.e. find the optimal binarization, using an iterative graph cut scheme. Our model is robust to variations in foreground and background colours as we use a Gaussian Mixture Model in the energy function. In addition, our algorithm is efficient to compute, and adapts to a variety of document images. We show results on word images from the challenging ICDAR 2003 dataset, and compare our performance with previously reported methods. Our approach shows significant improvement in pixel level accuracy as well as OCR accuracy

Advances in Character Recognition

This book presents advances in character recognition, and it consists of 12 chapters that cover wide range of topics on different aspects of character recognition. Hopefully, this book will serve as a reference source for academic research, for professionals working in the character recognition field and for all interested in the subject

Extraction of Text from Images and Videos

Ph.DDOCTOR OF PHILOSOPH