On hidden Markov models and cyclic strings for shape recognition

被引：7

作者：

Palazon-Gonzalez, Vicente ^{[1
]}

Marzal, Andres ^{[1
]}

Vilar, Juan M. ^{[1
]}

机构：

[1] Univ Jaume 1, Dept Llenguatges & Sistemes Informat, Castellon De La Plana, Spain

来源：

PATTERN RECOGNITION | 2014年 / 47卷 / 07期

关键词：

Hidden Markov models; Cyclic strings; Shape recognition; PROBABILISTIC FUNCTIONS; FOURIER DESCRIPTORS; NONRIGID SHAPES; CLASSIFICATION; REPRESENTATION; LIKELIHOOD; RETRIEVAL; SEQUENCES;

D O I：

10.1016/j.patcog.2014.01.018

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

Shape descriptions and the corresponding matching techniques must be robust to noise and invariant to transformations for their use in recognition tasks. Most transformations are relatively easy to handle when contours are represented by strings. However, starting point invariance is difficult to achieve. One interesting possibility is the use of cyclic strings, which are strings that have no starting and final points. We propose new methodologies to use Hidden Markov Models to classify contours represented by cyclic strings. Experimental results show that our proposals outperform other methods in the literature. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：2490 / 2504

页数：15

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