Comment by skybrian

2 months ago

When you zoom out far enough in ACME mapper, the factory disappears. (I'm guessing that's an older image.)

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skybrian

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ImaCake  2 months ago

Yep, pretty common for different zoom levels to be different time points. ACME is using plane photography for its high zoom images. You could try zoom.earth for hourly/12hourly satellite imagery.

  • zokier  2 months ago

    Although it is generally true that aerial photography is used to supplant satellite imagery in these sorts of public map services, I'm pretty confident that the image of BYD factory here is actual satellite imagery.

    • mapt  2 months ago

      Yeah, China tends to classify aerial survey photos as strategic intelligence assets.

      Did a scientific project there. It was a whole thing. The local/city/regional CCP branch was not cooperative with even the most innocuous low altitude drone data gathering from foreigners for ecology studies, despite sponsorship by local & national universities.

      There is even a random-geometric-distortion obfuscation layer that you have to apply to maps you're allowed to serve up publicly while doing business in China, like one of those distorted mesh grid paintings. Takes in WGS84 and spits out a nonsense projection a hundred meters away.

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