Rover visualization and other apps, For discussions of ways to view and understand the mission |
Rover visualization and other apps, For discussions of ways to view and understand the mission |
Apr 8 2021, 06:25 AM
Post
#1
|
|
Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
Hi Everyone. I am starting a thread for discussions of the many ways people are interacting with Perseverance (and potentially other missions). These subjects are getting spread around other threads and maybe getting in the way of basic mission updates etc., so this is a place to bring this together. Feel free to contribute to it.
I am going to start by asking about panoramas - what's the best way to do this with Perseverance images, especially Navcam images from every end of drive? Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
|
|
Apr 12 2021, 09:33 AM
Post
#2
|
|
Senior Member Group: Members Posts: 1619 Joined: 12-February 06 From: Bergerac - FR Member No.: 678 |
Many people I know, including myself, encounter problems mosaicking Perseverance's NavCam images using regular softwares : AutoPano, PTGuy, Hugin, ICE, etc. (*). When it comes to include the lowest part of the images, those are so much distorted that the results are ugly (sometimes the softwares show no result at all). (*) After devignetting and color correction For me it's not really about that. For me, it's about those colours. I mean seriously, Curiosity color pictures are very homogeneous, there is little to correct between them (maybe sometime a little bit of R/B balance, exposure) but THAT'S ALL. Why Perserverance imagery is so off ? All of it, both Nav/HazCams, Mastcam or WATSON. Because, stitching pictures, remove vignetting, I can do that. But when it comes to color weirdness like this, I can't. Even with a "single" picture like those full res Navcam cut in many pieces, there is this difference between the frames. I don't why we have that but it's annoying. And I think it's not encouraging, because I read people about the "real colors" of Mars saying that Percy imagery is deceiving, too yellow, or too blue, or too something, and why so different than Curiosity ? -------------------- |
|
|
Apr 12 2021, 11:50 PM
Post
#3
|
|
Junior Member Group: Members Posts: 95 Joined: 11-January 07 From: Amsterdam Member No.: 1584 |
Why Perserverance imagery is so off ? All of it, both Nav/HazCams, Mastcam or WATSON. Because, stitching pictures, remove vignetting, I can do that. But when it comes to color weirdness like this, I can't. Even with a "single" picture like those full res Navcam cut in many pieces, there is this difference between the frames. I don't why we have that but it's annoying. And I think it's not encouraging, because I read people about the "real colors" of Mars saying that Percy imagery is deceiving, too yellow, or too blue, or too something, and why so different than Curiosity ? Yes, they are pretty hard to work with, especially the ECAM's. And way off when it comes to 'real' colors. I guess that leaves them open for any artists interpretation... In Marslife I also try to make the panorama's match, which is a breeze to do with the B&W Navcams from Curiosity. The MSL Mastcam images look pretty good by themselves so I haven't made a color correction attempt yet. But to make a presentable panorama with Percy's navcam images, that is indeed quite the challenge. I wonder, is it possible that the color quality will improve during the mission? For now I have settled to crank up the blue channel a bit, which looks, well, agreeable. Other hints how get the colors more like they should be are most welcome. -------------------- |
|
|
Lo-Fi Version | Time is now: 21st September 2024 - 03:56 PM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |