Greg Anderson

Western Michigan University | WMU · Department of Geography

Graphic display of an Authoritative U.S. Topo shown alone, an NAIP image of Fline, and the Authoritative U.S. GeoChange image with the topo seamlessly overlain on the NAIP image.

First Place Overall Best Map Product and First Place Digital Map Competition, International Map Industry Association, North Americas Region, 2013 Authoritative US Topos and GeoChange maps offer complete US coverage in high-accuracy digital raster form for desktop (geoTIFF) and mobile (tiled geoPDFs) environments. Details on the processing and a va...

Aaron Arrowsmith Atlas of South India, survey season ca 1880. This presentation shows the original scans from Library of Congress as compared to the post-processed images wherein the gutter has been removed via color correction and rubber-sheeting of the pages. The ink bleed has also been removed, and the sheets were color enhanced to match each ot...

This presentation highlights examples of geographic change that can be seen when using the Authoritative US Topos dataset in conjunction with aerial imagery.

Historical GeoDatabases: Creating GIS Data from Historical Maps in any Medium. This presentation showcases the original Library of Congress scans before the step gutters were removed though image enhancement and rubber-sheeting (digitally stretching the paper to conform to geometric standards). Color control between sheets was produced, and much of...

Historical GeoDatabases: Creating GIS Data from Historical Maps in any Medium. This presentation shows the original Library of Congress scans, and then the same images following the removal of the gutter through image enhancement and rubber-sheeting (geometric correction). Efforts were also made to remove the ink bleed between pages and to match th...

The digital maps described in this short paper allow exploring all South Asia -- Pakistan, India, Nepal, Bhutan, and Bangladesh -- (excluding Baluchistan and Sri Lanka) in maps and satellite images. Packaged here are more than 300 map sheets, decollared and seamlessly viewable bundled with Bing Maps satellite and map information. All are rendered i...

The two images used in this study were created with hyper-accurate map imaging equipment at the W.E. Upjohn Center for the Study of Geographical Change. The first is an 1860s survey season map of Kashmir, India at a scale of 1 inch to 4 miles. This depiction of the Kashmir Himalayas is based on triangulated surveys for the Indian Atlas, Sheet 28 pu...