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View Diary: Could search for Nigerian girls be crowdsourced on GoogleEarth? (22 comments)

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  •  The other issue... (3+ / 0-)

    ...besides the time lag, is that the imagery in remote areas tends to not only be old, but low-rez. The reason for this is that the majority of commercial imaging satellites don't simply take an image of everything beneath them: they're tasked to image given areas, and if no one has had a reason to task the satellite to image a particular area, it probably won't be.

    A good example is the Canadian Arctic. Generally speaking fairly low-rez imagery across the entire thing, and much of it years old, but if you search around you'll notice some areas, out in the middle of nowhere, not near a community, have high-rez, recent imagery. The reason for that is that organizations such as the one I work for paid to get an image done of that specific area for a reason, and that image gets added to GoogleEarth. Anything outside that image doesn't have the same quality.

    So if that area of Nigeria hasn't had any reason why satellite imagery would be needed/wanted of it (and I haven't looked one way or the other), there wouldn't be any recent, high-rez imagery.

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