Image processing and GIS for hydrothermal alteration mapping, Baguio district, Philippines

  • Carranza E
  • Hale M
  • 6


    Mendeley users who have this article in their library.
  • 0


    Citations of this article.


A technique to map hydrothermally altered zones that involves processing of Landsat TM images and integration of ground data is tested in the Baguio district of the Philippines. Two band ratio images are input into principal components (PC) analysis to map each alteration mineral into separate PC 'mineral images'. Digitized ground data are used for training pixels for the known alteration zones, urban and water areas. The PC mineral images, a digital elevation model (DEM) of the test area and the training pixels are used in a supervised classification to map hydrothermally altered zones. The known hydrothermally altered zones are clearly mapped in the classified image.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Emmanuel John M Carranza

  • Martin Hale

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free