65dBnoise

#Ingenuity captured this sequence while ascending to 20m above the ground in its latest "popup" #Flight59.

5 quickly processed, undistorted HELI_RTE images played at 2 fps
Sol: 915, RMC: 59.0001, LMST: 11:06:39
One of the originals: https://mars.nasa.gov/mars2020-raw-images/pub/ods/surface/sol/00915/ids/edr/browse/heli/HSF_0915_0748163972_664ECM_N0590001HELI00004_000085J01.png
Credit: #NASA/JPL-Caltech/65dBnoise

#MarsHelicopter #Perseverance #Mars2020 #Solarocks #Space

Sep 22, 2023 at 10:23amWeb
Show threadSimeon SchmaußSep 22, 2023
@65dBnoise I quickly made a orthophoto of the area, roughly oriented with north up.
Show thread65dBnoiseSep 22, 2023

@stim3on
Very cool!
Here is your orthophoto georeferenced on my @QGIS map and showing the increased local resolution, along with a zoomed in image:

#Ingenuity #MarsHelicopter #QGIS #Mars2020 #NASA #Solarocks #Space

Show threadSimeon SchmaußSep 22, 2023
@65dBnoise nice! Considering I didn't do any georeferencing for my reconstruction, I'm happy to see it lining up rather well 😃
Unfortunately the 3D reconstruction itself isn't very good because the RTE images aren't very well suited for 3D reconstructions. They are just too noisy and have little clarity. I hope the MSR Helis will include some higher quality cameras!
Show thread65dBnoiseSep 22, 2023

@stim3on
The QGIS georeferencer does a very good job stretching the image; here I used 7 control points and projective transformation.

This is a version without any blending, for even higher resolution (also showing the control points in red):

Show threadSimeon SchmaußSep 22, 2023

@65dBnoise Great to see that it works with projective transformation! I mean that's basically just a perspective adjustment, which is to be expected with me only roughly aligning the reconstruction horizontally.

For images with stronger local distortions I'd recommend the Thin Plate Splines projection. I used that to roughly orthocorrect unprojected HiRISE images before with sufficient control points.

Show threadNyall DawsonSep 22, 2023
@65dBnoise @stim3on how's qgis working these days with non earth projections? Any glaring issues?
Show thread65dBnoiseSep 22, 2023
@nyalld @stim3on
Thanks to you guys (and USGS), QGIS makes one feel like Eratosthenes and Strabo of the #Solarocks. Setting projection seems a no-brainer these days. No issues that I can think of. 👍 !
Show threadNyall DawsonSep 22, 2023
@65dBnoise @stim3on awesome! Do reach out if you encounter any, I'd love to make these use cases a first class experience!
Show thread65dBnoiseSep 22, 2023
@nyalld @stim3on
Will do, thanks!