LOCAL CORRELATION OF LASER SPECKLE APPLIED TO THE STUDY OF SALT EFFLORESCENCE ON STONE SURFACES

被引：10
|
作者：
ZANETTA, P
FACCHINI, M
机构：
[1] Commission of the European Communities, Joint Research Centre Institute for Systems Engineering and Informatics, Ispra
来源：
OPTICS COMMUNICATIONS | 1993年 / 104卷 / 1-3期
关键词：
D O I：
10.1016/0030-4018(93)90101-A
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A local modification of a rough profile of a scattering surface produces a change in the corresponding part of its speckle image. This effect is employed to monitor the micro structural changes during ageing of a stone specimen by salt crystallisation cycles. A measure of local correlation is derived from the digital difference of speckle patterns. The 2D map of speckle correlation reveals interesting aspects of the efflorescence mechanism.
引用
收藏
页码：35 / 38
页数：4
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