From Bound Atlas to a Raster Layer in GIS

Aaron Arrowsmith Atlas of South India, survey season ca 1880.

Below are 10 sheets of the atlas covering the southeast portion of India, mapped by cartographer Aaron Arrowsmith. The original scan from Library of Congress is followed by its pair, the post-processed image version wherein the gutter has been removed through geometric correction (rubbersheeting) and visual gutter removal. The ink bleed was removed, and the sheets were color corrected to match each other as closely as possible. The ink bleed is a result of not using acid-free separation tissues in archiving old books and atlases. These sheets were then stitched together to create a mosaic of the region that has distinguishable features that line up with 2013 imagery as a KML on a Google Map Satellite Viewer.

NOTE: The bottom three sheets make it seem that the southern portion of India has its own peninsula, when in actuality those are the regions of the India that power was held by tribes and surveyors could not map because it was not colonized. Thus creating a peninsula of English occupancy, and not a peninsula of land as the map initially appears. The map from Wikipedia on the Fourth Anglo-Mysore War emulates this surveyed pattern:


WMA_Arrowsmith-seam-remoal-2 WMA_Arrowsmith-seam-remoal-3 WMA_Arrowsmith-seam-remoal-10 WMA_Arrowsmith-seam-remoal-11 WMA_Arrowsmith-seam-remoal-4 WMA_Arrowsmith-seam-remoal-5WMA_Arrowsmith-seam-remoal-6 WMA_Arrowsmith-seam-remoal-7 WMA_Arrowsmith-seam-remoal-8 WMA_Arrowsmith-seam-remoal-9   WMA_Arrowsmith-seam-remoal-12





















Margaret Spyker

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