Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item:

Authors: Tarquini, S.*
Favalli, M.*
Title: A Microscopic Information System (MIS) for petrographic analysis
Title of journal: Computer & Geoscience
Publisher: Elsevier
Issue Date: 2009
Keywords: Granitoid rocks
Geographic Information System
Image processing
Abstract: The database and visualization facilities of Geographic Information System (GIS) software are employed to support the analysis of rock texture from thin section by image processing. A Microscopic Information System (MIS) is hence obtained. The method is applied to transmitted light images of 137 samples obtained from 8 granitoid rocks. A slide scanner and a mount for crossed polarization are used to acquire the input images. For each thin section 5 collimated RGB images are scanned: 4 under different directions of crossed polarization and 1 without polarization. A grain segmentation procedure, based on two region growing functions is applied. The output is converted to vector format and refined using editing tools in the MIS environment, which enables a straightforward match between the input imagery and the final vectorized texture. GIS software provides optimal management of the MIS database, allowing the cumulative measurement of more than 87 000 grains.
Appears in Collections:04.04.11. Instruments and techniques
04.04.09. Structural geology
04.04.05. Mineralogy and petrology
Papers Published / Papers in press

Files in This Item:

File SizeFormatVisibility
ComGeo_PP_Tarquini et al_2009.pdf1.36 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Share this record




Stumble it!



Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA