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96a6fb43bcbbac98ad429a2334e84de6.ppt
- Количество слайдов: 21
Google Earth/Maps and Competitors By Vivian Velasquez DIS 19 Fall 2007
Image Resolution and Accuracies: Google Earth l l l At least 15 meters per pixel Up to 15 cm (6 in. ) in Las Vegas and Cambridge. Some incomplete updates: New Orleans Some land presented at sea level; Salton City (-200 ft), California and Death Valley (-286 ft)-though it is not, obviously. Arctic polar ice caps completely absent from Google Earth
False Color l An image depicted in colors that are different from “faithful fullcolored” photograph; “colors [that] represent measured intensities outside the visible portion of the electromagnetic spectrum” (Wikipedia)
True Color l “image of a subject is an image that appears to the human eye just like the original subject would: a green tree appears green in the image…” (Wikipedia).
Competing Services AOL Mapquest: Aerial Image
Ask, map directions: Aerial
Windows Live Local: hybrid, zoomed
Windows Live Local: Bird’s Eye
Windows Live Local: Bird’s eye
Windows Live Local: Bird’s eye
Yahoo Maps: Satellite
Rand Mc. Nally: Street map
Google Maps: Hybrid
Google Earth, zoomed
Google Earth: zoomed
Globe. Xplorer
Copyright l “Currently, every image created from Google Earth using satellite data provided by Google Earth is a copyrighted map. Any derivative from Google Earth is made from copyrighted data which, under United States Copyright Law, may not be used except under the licenses Google provides. Google allows non-commercial personal use of the images (e. g. on a personal website or blog) as long as copyrights and attributions are preserved. [29] By contrast, images created with NASA's globe software World Wind using Blue Marble, Landsat or USGS layer, each of which is a terrain layer in the public domain. Works created by an agency of the United States government are public domain at the moment of creation. This means that those images can be freely modified, re-distributed and used for commercial purposes” (Wikipedia).
Purpose of Google Earth? l l Educational purposes: K-8 classrooms? http: //www. google. com/educators/gaw. html “Geography Awareness Quiz” Entertainment Practicality: know where things are in the globe Suggestions? ….
The Privacy Question? l l l How many of you would be bothered by the fact that anyone using “G” Earth can possibly zoom in on you or your car’s license plate? Does it matter? Good for law enforcement? : FBI, CIA, local police… Is this Big Brother? Do we have reason to complain? Threat to National Security: “In October 2007, The Guardian reported that Arab terrorists are using Google Earth to plan their Qassam rocket attacks on Israel” (Wikipedia).
Google Blurrs Image… l Royal Stables in The Hague, Netherlands
96a6fb43bcbbac98ad429a2334e84de6.ppt