5 ms·
The Musaicum EU-plus 10M resolution image of Europe
- defrost 3y agoGood article, good end result dataset. Worth it for the discussion regarding optimal scales for aggregating pixel stats.
- _2z1p 3y ago[flagged]
- deleted 3y ago[deleted]
- Almondsetat 3y agoI would suggest lower casing the "M" as it stands for "meters" . By reading the submission title (the article one is correct, I don't know why you changed it) I couldn't figure out which mega units it was referencing (pixels, bytes,?)
- asicsp 3y agoLowercase to uppercase might have been an automatic change by HN too.
- heikkilevanto 3y agoThen spell it out as "10-meter". Having a clear and understandable headline is better than saving a few characters.
- marginalia_nu 3y agoEh, this is something HN does automatically after submission. It also sometimes drops words.
- layer8 3y agoHN titles can be edited by the submitter after submission. The automatic normalization only happens on the initial submit. It would be nice if HN would display a message after submitting that the submitter should check the changed title.
- kleiba 3y agoI still don't quite understand what 10m means in this context. Sorry, I'm slow.
- abwizz 3y ago1 pixel = 10 meters i'm slow too
- deleted 3y ago[deleted]
- 7373737373 3y agoWhat is the total file size of this?
- layer8 3y agoIt’s roughly 5000 x 5000 km, so 250 gigapixels. With 24-bit color, that would be about 700 GB uncompressed. Lossless compression can probably reduce that by a factor of ten or more.
- zigzag312 3y agoWhich lossless compression would compress images like this by a factor of ten or more? Isn't lossless image compression ratio more like around 2:1?
- layer8 3y agoIt’s just a rough guess based on the redundancy in that image (limited range of colors, no hard edges). Lossless compression ratios can vary wildly depending on image contents.
- dingdingdang 3y agoWhat we are really getting at here is: where's the jpg!?
- Culonavirus 3y agoThis may be a little off topic, but does anyone know of high resolution public domain datasets that can be used as basis for the rendering of the Earth's surface? Normal, albedo, etc.? Do they even exist? I know Nasa has some but what I found was tiny (100k res images and such are really low res when we're talking about the entire planet).
- noman-land 3y agoOpenStreetMap tiles maybe?
- habi 3y agoOpenStretMap does not have aerial imagery per se, several imagery layers are available only for tracing features off them: https://wiki.openstreetmap.org/wiki/Using_aerial_imagery#Imagery_and_OSM https://wiki.openstreetmap.org/wiki/Using_aerial_imagery#Ima...
- arlort 3y agohttps://scihub.copernicus.eu/ https://scihub.copernicus.eu/ No clue if it's enough for your purposes, but I think this is the basis for the article
- enriquto 3y agoSentinel 2 images are freely accessible, paid by european citizens through the copernicus program. There's also landsat 8 images, of similar resolution (10m/pixel for visible, lower in infrared bands). The revisit time depends on the latitude, but roughly you have a new image of the whole earth every week. Maybe that's too high res for your application?
- blamazon 3y agoUSA only and with caveats but the US Department of Agriculture operates the National Agricultural Imagery Program: https://naip-usdaonline.hub.arcgis.com/ https://naip-usdaonline.hub.arcgis.com/
- deleted 3y ago[deleted]
- fleischhauf 3y agowhat's the highest resolution satelite data that is commercially available actually?
- enriquto 3y agoworldview3 and pléiades neo have about 30cm per pixel (the images are sold by third-party vendors such as maxar, airbus)
- zokier 3y agoHow are Airbus and Maxar 3rd party vendors here? They own and operate the satellites themselves
- wongarsu 3y ago10cm, available from e.g. https://nearspacelabs.com/ https://nearspacelabs.com/ (using stratospheric balloons), or in 2025 from https://albedo.com/ https://albedo.com/ (using satellites).