Wednesday, March 12, 2008

GRCA now offers online downloads of SWOOP 30cm orthoimagery

The Grand River Conservation Authority (GRCA) is now offering the most recent orthoimagery available for our local area - the SWOOP colour 30cm collection which is available for download from their website : http://grims.grandriver.ca/imf/imf.jsp?site=grca_datadis&ddsid=6479e

Orthoimagery is available for the entire GRCA boundary and the user can define their own geographical extent of interest (within the boundary) and download the image as a jpeg 2000 image format.

For distribution purposes, GRCA applied a 40:1 compression to the original data and mosaiced to create 2km x 2km tiles.

SWOOP imagery is becoming freely available on the internet, but until now has only been available for viewing from sites such as The Region of Waterloo Locator. Having public access to the actual images is exciting news for both scholars and the community at large.

For those interested in crisper resolution, the University Map Library has 12 cm resolution for areas within the Region of Waterloo.

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