GeoSage Releases Enhanced Software Tools to Rapidly Analyse Popular Landsat-8 Imagery

Jan 5, 2016 -- GeoSage's software tool, Spectral Transformer for Landsat-8 Imagery, has recently been enhanced to include new functions towards automated image feature extraction. This is built upon the existing tool that with 2 simple button clicks, a user is able to rapidly perform  image band combinations, image stretching and image pan-sharpening, and produce colorful, detail-rich imagery composites at 30m and 15m resolutions.

New functions include:

  • 1 button click for automated NDVI calculation, with 3 types of outputs.
  • 1 button click for automated extraction of surface water areas, with 3 types of outputs.
  • Generic function to calculate 56 normalised difference image feature indices, with 3 types of outputs.
  • Generic function to calculate 56 band ratios, with 3 types of outputs.

The 3 types of outputs are automatically generated by the software. Each is a single-band GeoTIFF file, ready to be displayed in Windows Photo Viewer, GIS and remote sensing software, or Google Earth Pro.

  • First output: 32-bit Float data type, useful for further analyses.
  • Second output: 8-bit Byte data type, a unique colour palette is applied.
  • Third output: 8-bit Byte data type, a binary image to show classified features after a user-defined threshold is applied.

This Landsat-8 image analysis software tool targets geospatial professionals, K-12 students, as well as the general public. It is very easy to use, productive and saves time. To test the new functions, a trial version is available at Updated software user guide and new application demos are also provided.

About GeoSage

GeoSage ( is an enthusiastic leading developer in image fusion and spectral transformation analysis. It has developed a number of key technologies and software tools able to enhance imagery interpretation and visualisation, and produced some unique, large-sized, global satellite imagery and shaded-relief mosaics. GeoSage offers innovative, advanced and cost-effective image/spatial analysis products and solutions for the growing geospatial community as well as the general public.

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