Mapping our land more clearly and colourfully
for better analysis and visualisation


What's New


Customising regional imagery mosaics: 15m-resolution Korean Peninsula imagery in 9 styles















Cloud-based Geospatial Processing Services

August 2020: Extract Features from High-resolution Imagery: An AI-based Processing Service

We use new AI and deep learning to extract features of the built environment (e.g. buildings, vegetation - trees or grass, water and roads) from high-resolution imagery for very large geographic regions.

You may provide your own high-resolution digital imagery for AI-based image analysis. Typically, inputs are in GeoTIFF format (for raster imagery) and outputs in Shapefile format (for vector data).

February 2020: Turn your High-quality Elevation Data into Feature Layers and High-resolution, Beautiful Tile Maps, ready for Web & Desktop GIS Mapping

High-resolution tile maps on terrain and hydrology include:

  • Contours
  • Modelled surface water flow directions
  • Shaded relief maps

API-enabled tile maps can be easily integrated with web mapping apps (those using Google Maps APIs, Leaflet APIs, OpenLayers APIs, Mapbox APIs, etc.) or desktop GIS, by simply updating related URLs or file paths. You'd be amazed by how much the usual DEM data can be transformed into and effectively visualised.


New & Unique Software Tools


January 2021: Spectral Discovery software developed to rapidly process near real-time JMA Himawari 8/9 and NOAA GOES 16/17 imagery, and tiled web maps available for web & mobile apps



March 2020: DOS- and GUI-based Spectral Discovery for Sentinel-2 imagery Version 3.1 updated - Rapid band combinations, image stretching, image pan-sharpening, and exploratory image feature extraction tools for analysing 10m-, 20m- and 60m-resolution Sentinel-2 imagery, with 3 simple button clicks

March 2020: DOS- and GUI-based Spectral Discovery for Landsat-8 imagery Version 3.1 updated - Rapid band combinations, image stretching, and image pan-sharpening tools for making beautiful and detail-rich 15m-resolution Landsat-8 imagery composites, with 3 simple button clicks




Excellent global base maps -
                                  imagery and shaded relief

1. Global Satellite Imagery Mosaics / Basemaps - Earth Land Surface 2000 Ver. 3
  • 14.25/15/30/60/90m-resolution, natural and/or false-colour
  • Complete six (6) data sets, multiple styles
  • Unique global mosaics at 30m-resolution (image size: 1,296,000 x 648,000 pixels; file size: 2.29 terabytes in raw binary; format: optimised JPEG2000), ready-to-use and cost-effective
  • Global mosaic - an overview (ocean area: bathymetric shaded relief)

Anyone even with little or no geospatial experience is able to use our large-sized, GIS-ready global mosaics; it can be as easy as opening files! We show you how. 

2. U.S. Unique state-level imagery mosaics at 1m-resolution for 48 contiguous U.S. states

  • One state, one imagery mosaic – extremely easy to use and manage in GIS mapping software
  • See the big picture and the detail
  • Consistent 1m-resolution with the popular WGS 84 Web Mercator projection
  • Complete public NAIP imagery series from latest seasons
  • Large-sizes (e.g. for the 2013-2015 imagery series, ~180 Terabytes of processed data in raw binary and ~9.0 Terabytes in compressed JPEG2000 format)
  • Complementary to the existing small-sized county-level mosaics
  • Natural color (RGB), color infrared (CIR), or NDVI color mosaics available


Disclaimer | Privacy Statement | ©2021 GeoSage