My Assistant
Site Message
Left Vs Right, different resolution/compression MER jpg |
 Aug 18 2005, 05:27 PM
Post
#1
|
||
 Senior Member  Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150  |
Left/right pairs from both rovers and both sources (JPL and Exploratoriun) shows a systematic difference of jpeg files dimension in favour of right version (tipically 5% on NavCam/PanCam pairs). See example.
Moreover, you If you look carefully to images, you will find, there is a clear difference in terms of fine details:
I do not know if this strange issue is due to different jpeg compression ratio on the server or is more serious (lens difference? extremely improbable!). Other explainations??? (Maybe people often dowloading .img uncompressed images can answer...  )I noticed this from the very first Sols, but apparently no one highlighted it here and most people continue to use left images to make stitch or other considerations... viceversa, I reccomend to use always right version, when possible!!! -------------------- I always think before posting! - Marco -
|
|
 |
 
|
|
 |
|
Aug 2 2006, 12:37 PM
Post
#2
|
|
|
Founder Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
I've emailed JB. Navcam's not his dept - but I'll ask anyway.
|
|
|
|
dilo Left Vs Right Aug 18 2005, 05:27 PM
helvick I never noticed it myself but you might find somet... Aug 18 2005, 08:51 PM
dilo Thanks, helvick, very interesting articles!
(... Aug 18 2005, 09:18 PM slinted The compression used onboard the rover might expla... Aug 18 2005, 09:31 PM dilo Based on reactions in another thread, I realized t... Aug 2 2006, 09:45 AM fredk QUOTE (dilo @ Aug 2 2006, 09:45 AM) The l... Aug 3 2006, 02:32 AM djellison Is the same true of the RAD's out of the PDS?
... Aug 2 2006, 11:55 AM Analyst I am no image expert, so take this a pure guess.
... Aug 2 2006, 12:31 PM dilo I think Analyst's explaination is very plausib... Aug 2 2006, 02:43 PM MahFL I have always noticed the right cam images are bet... Aug 2 2006, 02:02 PM Bill Harris I'm embarrassed. I've never noticed this,... Aug 2 2006, 02:25 PM mhoward I think there is a pretty simple reason why people... Aug 2 2006, 02:28 PM Analyst Thanks dilo. I always thought the empty "filt... Aug 2 2006, 05:47 PM dilo Analyst, in my knowdlege, the R1 is a narrow-ban b... Aug 2 2006, 07:52 PM djellison L7 and R1 are the deep blue / violet that has exce... Aug 2 2006, 08:30 PM fredk Well, even though I started this resurgence in the... Aug 3 2006, 02:56 AM dilo Excellent work, fredk. Really!
Looking to imag... Aug 3 2006, 07:53 AM Bill Harris QUOTE It appears that there's something about ... Aug 3 2006, 12:50 PM CosmicRocker I'm glad this left/right thing was mentioned. ... Aug 6 2006, 07:41 PM |
|
Lo-Fi Version | Time is now: 17th December 2024 - 07:28 AM |
|
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. |
|
