Details: Image
Analysis Toolbox (IAT): The IAT was
originally delivered by Cal Data Ltd.
as a BC and Yukon Chamber of Mines’
Rocks to Riches project January
2004 and January 2005. The IAT was enhanced and ASTER images added
through funding from
Geoscience BC (ASTER
Imagery Project) in June
2005. The IAT is a framework to add, process and display a variety
of multi and hyperspectral imagery. The IAT includes Enhanced Satellite
Imagery delivered by McElhanney Consulting Services Ltd. A description of
these projects and use of the IAT are available in Fieldwork 2003,
p. 209-215: Kilby, W.E., Kliparchuk, K. and
McIntosh, A.: Image
Analysis Toolbox and Enhanced Satellite Imagery Integrated into The MapPlace
(PDF document, 5.7 Mb).
The site hosts 68 Landsat and 139 Aster images. Enhancements to the IAT are described below.
To use
the IAT, open the
Exploration Assistant and select Image Analysis Toolbox,
an image, then Analyze Image.
Image Analysis Links...
References...
Updates:
July 25, 2006: Added
Video
Tutorials to
GeoFile 2006-8 IAT
Tutorial Manual and Exploring the MapPlace
- Workshop Notes.
June 5, 2006: Added
GeoFile 2006-8:
Examining ASTER Imagery with the MapPlace Image Analysis Toolbox - A
Tutorial Manual, by W.E. Kilby and C.E. Kilby, Cal Data Ltd.
Geoscience BC Report 2006-3 Contribution #GBC 015.
March 29,
2006: Added a new interactive masking feature
to ASTER image tools (ASTER MASKER).
February 14,
2006: ASTER
Download layer, with labels, and toggle button
added to IAT. Added a table of
ASTER Images
Available for Download; see
Index Map.
February 8,
2006: Added Alteration-Mineral Images
to the ASTER Image Download page in the Image Analysis Tool. Four
alteration-mineral images are available in PNG format with PGW world files.
These images were produced using standard combinations of the ASTER bands.
The four images can be used to map the relative abundance of siliceous
rocks, iron oxides, sericite and illite, and alunite and/or kaolinite. See
the Fieldwork 2005
article for processing information on these images. The images are in UTM
projection. As the colour scaling is unique to each image, the colours
should not be compared between images.
January
23, 2006:
In Phase 3, the IAT was enhanced with the addition of 100 new ASTER images.
A new "Rocks Only" tool for identifying Iron-oxides, Silica, Sericite-Illite,
and Alunite-Kaolinite was added. The imagery is also available with
accompanying 3D anaglyph
maps, Digital Elevation Models, stereo image pairs, and virtual worlds
(VRML) user controlled fly-throughs. See
Fieldwork 2005,
p. 287-294 for details. Phase 3 was
available through funding from a
Geoscience BC project -
ASTER
Imagery.
January 24, 2005:
In Phase 2, the IAT was completed with the
addition of more analysis tools, imagery and imagery types. Near-complete
coverage of the province with Landsat 7 (ETM+) imagery and 40 ASTER images
are now available. Two new tools, the Tasseled Cap Transformation and the
Spectral Angle Mapper (SAM) were added. Program enhancements were also made
to the existing IAT programs to increase their efficiency and capability.
See Fieldwork 2004,
p. 231-235 for details.
July 15, 2004: Added
48 new Landsat images (L21 –
L68), covering most of BC. These images are
available for processing using the IAT. They are not yet available as enhanced downloads.
Image Analysis Links:
View
Exploration Assistant and select Image Analysis Toolbox (IAT)
![](/web/20061229010238im_/http://www.em.gov.bc.ca/Mining/Geolsurv/MapPlace/images/IAT600.jpg)
References:
Google (2005): Google Earth, Global Internet
viewer of imagery and vector information;
earth.google.com
ImSpec LLC (2006): ACORN5, Atmospheric
correction software;
www.imspec.com
ITT (2006): ENVI, Image analysis software
package. Ver 4.3;
www.ittvis.com
Kilby, W.E., Kliparchuk, K., and McIntosh, A.
(2004): Image
Analysis Toolbox and Enhanced Satellite Imagery Integrated into the MapPlace;
British Columbia Ministry of Energy and Mines, Geological Fieldwork 2003,
Paper 2004-1, p.209-215
Kilby, W.E. (2005):
MapPlace.ca Image Analysis
Toolbox – Phase 2; British Columbia Ministry of Energy and Mines,
Geological Fieldwork 2004, Paper 2005-1, p.231-235
Kilby, W.E. and Kilby, C.E. (2006):
ASTER Imagery for BC – An
Online Exploration Resource; British Columbia Ministry of Energy, Mines
and Petroleum Resources, Geological Fieldwork 2005, Paper 2006-1, p.287-294
Kilby, W.E. and Kilby, C.E. (2006):
Examining ASTER
Imagery with the MapPlace Image Analysis Toolbox - A Tutorial Manual;
British Columbia Ministry of Energy, Mines and Petroleum Resources, GeoFile
2006-8 / Geoscience BC Report 2006-3, 41 p.
SulSoft (2005): AsterDTM, ASTER
orthorectification software. Ver 2.2;
www.envi.com.br/asterdtm/english/index.htm