May 4, 2007

Visit Blue Marble at the 2007 ASPRS Conference and learn about georeferencing historical map data

Gardiner, Maine — May 4, 2007 – Blue Marble Geographics ( will be offering software demonstrations of the Geographic Transformer application during the upcoming 2007 American Society of Photogrammetry and Remote Sensing (ASPRS) Conference in Tampa, FL. Georeferencing and reprojecting historical maps can effectively demonstrate how the Geographic Transformer can be used in practical research and educational situations. Come and visit booth 305 to learn why Blue Marble’s coordinate conversion technology is used worldwide by thousands of GIS analysts at software companies, universities, oil and gas companies, civil engineering, surveying, technology, enterprise GIS groups, government and military organizations.

The demo will utilize a scanned map from the 1890’s, reference it to known control points, and reproject it to a known coordinate system. The coordinate information on the map requires referencing and the application of higher order polynomial equations to straighten the curves and distortions of paper stretch. Using modern map data containing known boundaries and natural landmarks, the map can be georeferenced and transformed to a valid projection, allowing the use of digitizing tools to resurrect lost location information.

About ASPRS: Founded in 1934, ASPRS is an international professional organization of 6,000 geospatial data professionals. ASPRS is devoted to advancing knowledge and improving understanding of the mapping sciences to promote responsible application of photogrammetry, remote sensing, geographic information systems and supporting technologies.

Blue Marble Geographics of Gardiner, Maine is a leading developer and provider of geographic software products that provide sensible solutions for users and developers of geographic data. Blue Marble has been writing GIS software tools and solutions for nearly 15 years and currently serves hundreds of thousands of users worldwide. Learn more at

Contact Information:

Blue Marble Geographics

Gardiner, ME, USA

800-616-2725 / 207-582-6747
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