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Simeon Schmauß

The full landing sequence of #Chandrayaan3

I wrote a python script to undo the frame blending from the original video and then upscaled the images with AI.
The video is at 120x playback speed, in reality this took about 66 minutes.

Credit: #ISRO / Simeon Schmauß

12 comments
Simeon Schmauß

My goal was to extract clean images so I can interpolate the whole video with AI to get a very smooth video like @TJ_Cooney@twitter.com did for the rover deployment sequence.

Unfortunately there is too much movement in the video so the interpolation didn't produce good results. If anyone wants to give this video another try I'm happy to provide the extracted frames.
twitter.com/TJ_Cooney/status/1

Simeon Schmauß

The full video sequence was discovered by @Astro_Aure@twitter.com on the ISRO website: isro.gov.in/media_isro/video/H

You can see the original frame blending interpolation in that video.

Unfortunately @isro doesn't provide a high quality version of the images...

Simeon Schmauß

To find the original unblended frames my python script uses a high-pass filter to look for edges in the frame. Basically, the fewer edges it finds, the more likely it is to be an unblended frame.

Janet Logan (she/her) 🏳️‍⚧️

@stim3on

Equally unfortunately, that isro website "cannot be found" when I click on the link here in the US. 🤷‍♀️

Simeon Schmauß

@SubtleBlade @janetlogan It should work now. the "www" of the url was lost while copying the text from twitter and some websites don't work without it.
Sorry for the inconvenience.

Janet Logan (she/her) 🏳️‍⚧️

@stim3on

FWIW: that's a sysadmin error. It is entirely possible to auto redirect the DNS to resolve "www" when it's omitted from the request. So not on you really. 👍

@SubtleBlade

Simeon Schmauß

@SubtleBlade @janetlogan I should have known better though because I already encountered this earlier today with the same url 😅

Normally one wouldn't really encounter this because you just copy a complete url.
But this happens to me rather often when I copy my tweets over to Mastodon. Even though twitter often shows a shortened url, when you copy it it gets reassembled with "https://". Whats never added back though is the "www." even if the original url contained it...

Janet Logan (she/her) 🏳️‍⚧️

@stim3on

As we've all learned by now, the network formerly known as Twitter thinks rules and conventions are for everyone else. As does it's current owner, apparently.

@SubtleBlade

Scott Bronson

@stim3on beautiful!! Great job. Really shows how involved a landing like this is. … idle thought … How hard would it be to overlay an altitude and maybe a speed display on there? A realtime clock might be nice too.

Simeon Schmauß

@sb Thanks! Unfortunately ISRO is very slow to release stuff on the mission. We only have a few shots of the telemetry screen from the livestream, nothing really concrete.
What I can tell you is that the video starts at approximately 30km above the surface.

youtube.com/live/DLA_64yz8Ss?s

youtube.com/live/DLA_64yz8Ss?s

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