tirsdag den 9. juni 2009

Improving Google Earth Base Imagery

Må man ændre på data? Må man sminke på virkeligheden? Må man ensrette ... 

Should you alter the data? Should you beautify the real world? Should you standardize ...


[...] Lately, Google has been attempting to correct the view from above by fusing different colors of shading into the imagery and using color correction on the satellite imagery. For example, this was done with Australia in December, and this weekend the US has had some of the treatment. But, the problem with this approach is that the colorization sometimes messes up the quality of the imagery (painting not only vegetation green, but also buildings, roads, and everything else (see image to the right). See the example  in the screenshot here in Google Earth - turn on "Historical Imagery" option of GE 5 to see the two different shots. Not only that, but the colors are actually wrong in some places (like Arizona where they painted areas green that have no substantial green color in real life) - see the Tucson Mountains for example. However, I do approve of processing the base imagery for color saturation, brightness, and contrast consistency. [...]

Source: Free Geography Tools

Read more: http://www.gearthblog.com/blog/archives/2009/06/improving_google_earth_imagery.html

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