Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Planet: Imaging the entire Earth every day

nbremer.github.io

Post reply on HN
Print view View original

141–144 of 144 posts

Re: Planet: Imaging the entire Earth every day

#141

Post by kleer001 »

schoen wrote: post #120
kleer001 wrote: post #116

Earlier quoted context omitted.

I imagine it should still slightly alter the appearance of the water. Check out "Eulerian Video Magnification" for more.

That work is awesome, but don't they need changes over time in order to achieve the magnification? How would you get changes over time with the plastic pollution in order to view it this way?

Use frames from the same area over a span of time....

What's confusing? There's a picture taken every day.

If you're worried about the time span between the frames, I'm certain that shouldn't matter to the algorithm, it's just more noise and maybe the result takes longer to get..

Re: Planet: Imaging the entire Earth every day

#142

Post by winrid »

TekMol wrote: post #38
winrid wrote: post #33

Earlier quoted context omitted.

Chromium doesn't have all that tracking stuff right. What's wrong with it?

Not true. Chromium talks a lot to Googles servers. Additionally, "websites" that are made for chrome drive even more people into this monoculture which is bad for the web.

Did not know that.

Re: Planet: Imaging the entire Earth every day

#143

Post by RosanaAnaDana »

jofer wrote: post #121
RosanaAnaDana wrote: post #107

Earlier quoted context omitted.

Google imagery is a wide range of 10-100cm imagery. I believe (top of my head) that the planet data is natively 25 centimeters (7-8 band?).

Planet global imagery is 4 band sampled at ~4m (oversampled to 3.0m). Skysats (Planet's high-res satellites) are 0.8m, but image only small areas. (Numbers are based on https://assets.planet.com/docs/combined-imagery-product-spec... ) Nothing is global at high resolution for anyone. Google's imagery is only high res at locations people are likely to look at. High resolution satellites have a very narrow field of view…

Yeah, I got my satellite companies confused. I was thinking of digital globe and their 31 cm offering (got a quote from them fairly recently).

Re: Planet: Imaging the entire Earth every day

#144

Post by joushx »

dougmwne wrote: post #64

You can access their monthly imagery for free by creating an account at planet.com. I use it to track the progress of infrastructure and other land development projects near me. You can also create time lapse animations of a particular area, which is a super fun way to watch a road or a highway being built.

They looked me up on LinkedIn using my email address and called by boss to ask me about the service.
Post reply on HN