PROBABILISTIC ESTIMATION OF BRAILLE DOCUMENT PARAMETERS

被引：2

作者：

Babadi, Majid Yoosefi ^{[1
]}

Nasihatkon, Behrooz ^{[1
]}

Azimifar, Zohreh ^{[1
]}

Fieguth, Paul ^{[2
]}

机构：

[1] Shiraz Univ, Dept Comp Sci & Engn, Shiraz, Iran

[2] Univ Waterloo, Syst Design Engn, Waterloo, ON N2L 3G1, Canada

来源：

2009 16TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOLS 1-6 | 2009年

关键词：

Braille; Expectation-Maximization; Line-spacing; Maximum-Likelihood; Skewness;

D O I：

10.1109/ICIP.2009.5413816

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

Braille is the most common means of reading and study for visually handicapped people. The need for converting Braille documents into a computer-readable format has motivated research into the implementation of Braille recognition systems. The most fundamental steps in such recognition are estimating the scaling, spacing, and skewness properties of a given Braille document. In this paper we propose a statistical method for estimating these parameters, where we model an entire Braille image using a parameterized probability density function and find the maximum-likelihood (ML) estimates using Expectation-Maximization (EM) algorithm. The proposed method is robust against noise and other image artifacts, and has a modest computational complexity for straightforward execution on ordinary personal computers.

引用

页码：2001 / +

页数：2

共 50 条

[41] DOCUMENT RETRIEVAL USING A PROBABILISTIC KNOWLEDGE MODEL
Wang, Shuguang
Visweswaran, Shyam
Hauskrecht, Milos
KDIR 2009: PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON KNOWLEDGE DISCOVERY AND INFORMATION RETRIEVAL, 2009, : 26 - +
[42] The organisation and visualisation of document corpora:: A probabilistic approach
Girolami, M
Vinokourov, A
Kabán, A
11TH INTERNATIONAL WORKSHOP ON DATABASE AND EXPERT SYSTEMS APPLICATION, PROCEEDINGS, 2000, : 558 - 564
[43] PROBABILISTIC APPROACHES TO THE DOCUMENT-RETRIEVAL PROBLEM
MARON, ME
LECTURE NOTES IN COMPUTER SCIENCE, 1983, 146 : 98 - 107
[44] Probabilistic document length priors for language models
Blanco, Roi
Barreiro, Alvaro
ADVANCES IN INFORMATION RETRIEVAL, 2008, 4956 : 394 - 405
[45] A probabilistic relational approach for web document clustering
Fersini, E.
Messina, E.
Archetti, F.
INFORMATION PROCESSING & MANAGEMENT, 2010, 46 (02) : 117 - 130
[46] A Probabilistic model for compact document topic representation
Berenyi, Zsolt
Vajk, Istvan
PROCEEDINGS OF THE 9TH WSEAS INTERNATIONAL CONFERENCE ON SIMULATION, MODELLING AND OPTIMIZATION, 2009, : 322 - +
[47] Probabilistic data fusion on a large document collection
Lillis, David
Toolan, Fergus
Collier, Rem
Dunnion, John
ARTIFICIAL INTELLIGENCE REVIEW, 2006, 26 (1-2) : 23 - 34
[48] Probabilistic data fusion on a large document collection
David Lillis
Fergus Toolan
Rem Collier
John Dunnion
Artificial Intelligence Review, 2006, 26 : 23 - 34
[49] PROBABILISTIC AND GENETIC ALGORITHMS FOR DOCUMENT-RETRIEVAL
GORDON, M
COMMUNICATIONS OF THE ACM, 1988, 31 (10) : 1208 - 1218
[50] ESTIMATION OF THE PARAMETERS OF HIDDEN MARKOV-MODELS OF NOISE-LIKE SIGNALS WITH ABRUPTLY CHANGING PROBABILISTIC PROPERTIES .2. ESTIMATION OF THE STRUCTURAL PARAMETERS OF THE MODEL
IVANOVA, TO
MOTTL, VV
MUCHNIK, IB
AUTOMATION AND REMOTE CONTROL, 1994, 55 (10) : 1428 - 1445

← 1 2 3 4 5 →