ERIN Dual-processed Landsat TM tiles in Western Australia - Summary

Researchers: Environmental Resources Information Network (ERIN) Point of Contact (Originator of) ,  Ken Dawbin (Point of contact) ,  Sarfraz Khokhar (Processor of)

Brief description Landsat TM images from Onslow southwards in Western Australia were cut using NATMAP Geoscience Australia 1:250 000 scale maps and were geometrically rectified to GDA94 (Datum) and MGA (Projection). A dual enhancement technique was conducted to Landsat TM satellite data where land was enhanced using bands 741 (RGB) and water was enhanced using bands 321 (RGB). Images were saved in GeoTIFF format with a 25m pixel size

Lineage Statement: (1) First the raw Landsat images were geometrically rectified to GDA94 (Datum) and MGA (Projection) and were resampled using cubic convolution, (2) No attempt was made to radiometrically calibrate these images since images dates image dates were quite apart. Also, the calibration would not have worked over water due to different tide conditions, (3) Three bands composite Images were produced using dual enhancement technique where land was enhanced using bands 741 (RGB) and water was enhanced using bands 321 (RGB), (4) Images were cut using 250000 map extents and were saved in 24 GeoTIFF format.

126,-20 126,-36 112,-36 112,-20 126,-20

119,-28

text: westlimit=112; southlimit=-36; eastlimit=126; northlimit=-20; projection=EPSG: 28349, 28350, 28351