5 ms·

Maybe in the US and other select regions, certainly not globally though.

by dualogy 13y ago

sp332 13y ago
Moscow, Russia: https://maps.google.com/maps?q=moscow&hl=en&ll=55.750666,37.627788&spn=0.021472,0.055747&geocode=+&hnear=Moscow,+gorod+Moskva,+Russia&t=k&z=15 https://maps.google.com/maps?q=moscow&hl=en&ll=55.75... Tokyo, Japan: https://www.google.com/maps?q=tokyo&ll=35.689143,139.695239&spn=0.015493,0.027874&sll=43.2308015,-71.547514&sspn=0.24667465403978758,0.5769903376016519&t=k&hnear=Tokyo,+Japan&z=16 https://www.google.com/maps?q=tokyo&ll=35.689143,139.695... Tunis, Tunisia: https://www.google.com/maps?q=Tunis,+Tunisia&ie=UTF8&ll=36.818621,10.167267&spn=0.00791,0.013937&sll=55.75204360000007,37.618829999999974&sspn=0.018709412056083227,0.05664722281290087&t=k&hnear=Tunis,+M%C3%A9dina+de+Tunis,+Tunis,+Tunisia&z=17 https://www.google.com/maps?q=Tunis,+Tunisia&ie=UTF8&#38... Monrovia, Liberia: https://www.google.com/maps?q=monrovia,+liberia&hl=en&ll=6.300028,-10.796809&spn=0.00474,0.006968&sll=35.689143,139.695239&sspn=0.015493,0.027874&t=k&hnear=Monrovia,+Greater+Monrovia,+Montserrado,+Liberia&z=18 https://www.google.com/maps?q=monrovia,+liberia&hl=en&#3... Niue (a tiny island nation 1,500 miles off the coast of New Zealand): https://www.google.com/maps?q=niue&hl=en&ll=-19.010302,-169.805245&spn=0.002254,0.003484&sll=6.300028,-10.796809&sspn=0.00474,0.006968&t=k&hnear=Niue&z=19 https://www.google.com/maps?q=niue&hl=en&ll=-19.0103... So yeah, I think it's pretty global.
- jpdus 13y ago
  everything you posted (except Tokyo) is satellite imagery only as far as i can see - so where is your point?
  - sp332 13y ago
    Really? In Niue you can see the lines on the basketball court. The best commercial satellite imagery I know if is about .5 meters (20 inches). Now that I look at it though, the Moscow one is pretty fuzzy...
    - jofer 13y ago
      "Detect" and "resolve" are two different things when it comes to imaging. You can detect the lines on the court because they're bright white on dark background. However, you can't tell if it's one line or two parallel white lines less than ~1m apart. In other words, you can't accurately measure the width of an object less than the resolution of the imagery, even if you can tell that it's present. The Niue imagery is ~1m resolution. If you hunt around a bit, you can find a few cars. Note that you can measure their width, but it's difficult to do.
- dualogy 13y ago
  So 5 cities must mean the same as 200 countries now? Also except Tokyo these are all extremely low-res at my high-speed end, hinting towards Satellite imagery.

Maybe in the US and other select regions, certainly not globally though.

by dualogy 13y ago

Maybe in the US and other select regions, certainly not globally though.

sp332 13y ago

Moscow, Russia: https://maps.google.com/maps?q=moscow&hl=en&ll=55.750666,37.627788&spn=0.021472,0.055747&geocode=+&hnear=Moscow,+gorod+Moskva,+Russia&t=k&z=15 https://maps.google.com/maps?q=moscow&hl=en&ll=55.75... Tokyo, Japan: https://www.google.com/maps?q=tokyo&ll=35.689143,139.695239&spn=0.015493,0.027874&sll=43.2308015,-71.547514&sspn=0.24667465403978758,0.5769903376016519&t=k&hnear=Tokyo,+Japan&z=16 https://www.google.com/maps?q=tokyo&ll=35.689143,139.695... Tunis, Tunisia: https://www.google.com/maps?q=Tunis,+Tunisia&ie=UTF8&ll=36.818621,10.167267&spn=0.00791,0.013937&sll=55.75204360000007,37.618829999999974&sspn=0.018709412056083227,0.05664722281290087&t=k&hnear=Tunis,+M%C3%A9dina+de+Tunis,+Tunis,+Tunisia&z=17 https://www.google.com/maps?q=Tunis,+Tunisia&ie=UTF8&#38... Monrovia, Liberia: https://www.google.com/maps?q=monrovia,+liberia&hl=en&ll=6.300028,-10.796809&spn=0.00474,0.006968&sll=35.689143,139.695239&sspn=0.015493,0.027874&t=k&hnear=Monrovia,+Greater+Monrovia,+Montserrado,+Liberia&z=18 https://www.google.com/maps?q=monrovia,+liberia&hl=en&#3... Niue (a tiny island nation 1,500 miles off the coast of New Zealand): https://www.google.com/maps?q=niue&hl=en&ll=-19.010302,-169.805245&spn=0.002254,0.003484&sll=6.300028,-10.796809&sspn=0.00474,0.006968&t=k&hnear=Niue&z=19 https://www.google.com/maps?q=niue&hl=en&ll=-19.0103... So yeah, I think it's pretty global.

jpdus 13y ago
everything you posted (except Tokyo) is satellite imagery only as far as i can see - so where is your point?
- sp332 13y ago
  Really? In Niue you can see the lines on the basketball court. The best commercial satellite imagery I know if is about .5 meters (20 inches). Now that I look at it though, the Moscow one is pretty fuzzy...
  - jofer 13y ago
    "Detect" and "resolve" are two different things when it comes to imaging. You can detect the lines on the court because they're bright white on dark background. However, you can't tell if it's one line or two parallel white lines less than ~1m apart. In other words, you can't accurately measure the width of an object less than the resolution of the imagery, even if you can tell that it's present. The Niue imagery is ~1m resolution. If you hunt around a bit, you can find a few cars. Note that you can measure their width, but it's difficult to do.
dualogy 13y ago
So 5 cities must mean the same as 200 countries now? Also except Tokyo these are all extremely low-res at my high-speed end, hinting towards Satellite imagery.