Speckle time evolution characterization by the co-occurrence matrix analysis

被引：167

作者：

Arizaga, R

Trivi, M

Rabal, H

机构：

[1] Natl Univ La Plata, Fac Ingn, Ctr Invest Opt, RA-1900 La Plata, Argentina

[2] Natl Univ La Plata, Fac Ingn, OPTIMO, RA-1900 La Plata, Argentina

来源：

OPTICS AND LASER TECHNOLOGY | 1999年 / 31卷 / 02期

关键词：

speckle; dynamic speckle patterns activity; co-occurrence matrix;

D O I：

10.1016/S0030-3992(99)00033-X

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe some aspects of the measurement of dynamic speckle activity. We propose the use of the co-occurrence matrix of the time history of the intensity of a speckle pattern. Then we suggest a measure of the activity based on the use of one of its second order moments. Some numerical simulations were performed for testing purposes. The method was applied to the study of the drying of paint and was compared with gravimetric measurements. Experimental results obtained are shown and a good correlation is obtained. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：163 / 169

页数：7

共 10 条

[1] BIO-SPECKLE PHENOMENA AND THEIR APPLICATION TO THE EVALUATION OF BLOOD-FLOW [J].