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Re:Mars images rendered in 4K [video] by nobrains on Monday July 20, 2020 @11:44AM (#23898937)
Interesting facts that I didn't know before seeing this video:

- The opportunity rover captured a barren scene which was named Rub Al Khali (Yes! On Mars!), named after the Rub Al Khali desert area which touches UAE, Saudi, Oman and Yemen. (1) (2)

- The video says that Mars rovers send back images (not videos) and then those images are stitched together to create videos, because "nothing ever moves on Mars". But I wonder how a Mars video will look. Maybe it will surprise us (movements due to winds).

- Mars has a lot of clay (i.e. it was once a watery planet)

- Some videos took 1,000 images to make

- There is a beautiful selfie at timestamp 6:41

- There is dune named "Namib" on Mars, shown at timestamp 9:10, named after Namib desert in Africa. (3) (4)

Re:Mars images rendered in 4K [video] by cryptoz on Monday July 20, 2020 @01:47PM (#23900182)
Mars is constantly moving. There are wind storms, dust devils, ice melting, all kinds of things.

Here's a dust devil https://www.youtube.com/watch?v=k8lfJ0c7WQ8 (again, it's still images to make a video) but not because "nothing ever moves on Mars"!

Mars is constantly shifting and changing with its weather and seasons. Ice caps freeze more, and ice caps melt more, water or other liquid flows down hills when it gets warm.

More often than dust storms, a new robot comes down to land on Mars in firey rocket-landing-fueled or bouncing-ball style. Movement.

Mars is constantly hit by rocks from space that create craters and push dust up into the atmosphere.

I've never heard someone say "Nothing ever moves on Mars" because it's really not true and a total lack of imagination. Maybe people think nothing moves because we haven't sent video cameras yet? But...Mars is constantly in motion.

Re:Mars images rendered in 4K [video] by astroflask on Monday July 20, 2020 @02:27PM (#23900505)
Earlier this year I made a video[0] where I took two images which are frequently posted on reddit that show the movement of martian sand over a day and interpolated (with python and opencv) the movement into a smooth video. I'm currently working on restoring some Apollo footage, but one of the pending projects is taking the Curiosity descent sequence (at 4 frames per second) and give it a shot at some nice quality, XXI century interpolation (we have some very good algorithms now, or at least better workarounds the artifacts).

[0] https://youtu.be/k7pfdFMVj-o

Re:Mars images rendered in 4K [video] by garaetjjte on Monday July 20, 2020 @05:41PM (#23902207)
>give it a shot at some nice quality, XXI century interpolation

I think it has been done? https://www.youtube.com/watch?v=tMntZ6_R78Q

Re:Mars images rendered in 4K [video] by astroflask on Monday July 20, 2020 @10:03PM (#23903723)
The creator on that channel simply uses a DAIN application without pre or post processing the images (either the base images or the optical flow maps).

I take a different approach and I can't say I haven't found issues (I have, many, I'm working on them).

My goal is to reach a level where there are almost none artifacts (there are a couple in that video at the start, when the shield is released and when there are many large movements of the camera due to Curiosity dangling off the parachute). As I said, I'm still working on it, and in between my other side projects, work and quarantine I've been on a less-than-ideal situation.

In time, if I pull it off, I'll post it and I guess you'll see it.

Re:Mars images rendered in 4K [video] by dmix on Monday July 20, 2020 @02:04PM (#23900322)
When something is quoted like that it usually means it's a reference to something, not a literal statement. In this case I'm guessing it's a play on "Nothing ever happens on Mars" by the Spinal Tap guy.
Re:Mars images rendered in 4K [video] by jerf on Monday July 20, 2020 @12:36PM (#23899465)
"There is a beautiful selfie at timestamp 6:41"

Where's the camera in that selfie? Perhaps edited out of the mosiac?

Re:Mars images rendered in 4K [video] by salgernon on Monday July 20, 2020 @02:58PM (#23900802)
There's an explanation and video[1]; I remember thinking the same a few years ago.

[1] https://www.nasa.gov/feature/jpl/nasas-curiosity-mars-rover-...

Re:Mars images rendered in 4K [video] by jerf on Monday July 20, 2020 @10:19PM (#23903787)
Thank you.

That's probably a great example of one of the benefits of these rovers running for so long. They'd never have scheduled something so non-science-oriented if they only got the few weeks they expected, but when your mission exceeds expectations by several thousand percent, you have time for such things.

Re:Mars images rendered in 4K [video] by TravHatesMe on Monday July 20, 2020 @05:54PM (#23902302)
> named after the Rub Al Khali desert area

> named after Namib desert in Africa

In a few hundred years, maybe these won't be deserts anymore. It will make for an interesting fact!