IPB

Welcome Guest ( Log In | Register )

5 Pages V   1 2 3 > »   
Reply to this topicStart new topic
Third HSRC Release!, Includes map-projected calibrated images
jaywee
post Apr 26 2006, 04:21 AM
Post #1


Newbie
*

Group: Members
Posts: 17
Joined: 25-April 05
From: Pilsen, CZ, EU
Member No.: 363



ESA released new set of HRSC images from orbits 1225 and 1863, which are map projected and radiometrically calibrated. At this moment you have to get them through the PSA interface

A color composite of a stripe of Meridiani Planum (includes Victoria) can be found here (2MB)
Go to the top of the page
 
+Quote Post
dilo
post Apr 26 2006, 07:21 AM
Post #2


Senior Member
****

Group: Members
Posts: 2492
Joined: 15-January 05
From: center Italy
Member No.: 150



QUOTE (jaywee @ Apr 26 2006, 04:21 AM) *
A color composite of a stripe of Meridiani Planum (includes Victoria) can be found here (2MB)

In fact, this is a 90deg rotated analglyph ( huh.gif )... I'm not able to identify Victoria, even though there are many simil-Victoria crates... could you kindly show me where should be?


--------------------
I always think before posting! - Marco -
Go to the top of the page
 
+Quote Post
jaywee
post Apr 26 2006, 07:37 AM
Post #3


Newbie
*

Group: Members
Posts: 17
Joined: 25-April 05
From: Pilsen, CZ, EU
Member No.: 363



Actually, it's just simple color composite - exactly same as in Oppy subforum. I know the color doesn't feel right somehow but it's not rotated. Look for the 3 big lined craters on the right about 3/4 down the image. Then in the lighter "rectangle" left of the topmost crater, is Victoria. Pixelwise it's [1180;15588] Or look at the Victoria crop for context smile.gif
Go to the top of the page
 
+Quote Post
dilo
post Apr 26 2006, 08:55 AM
Post #4


Senior Member
****

Group: Members
Posts: 2492
Joined: 15-January 05
From: center Italy
Member No.: 150



Perhaps not intentional, but channel shift around this crater (located at 1/5th of image height) is really 3D if rotated 90deg clockwise and seen through 3D glasses cool.gif
Attached thumbnail(s)
Attached Image
 


--------------------
I always think before posting! - Marco -
Go to the top of the page
 
+Quote Post
dilo
post Apr 26 2006, 09:28 AM
Post #5


Senior Member
****

Group: Members
Posts: 2492
Joined: 15-January 05
From: center Italy
Member No.: 150



...and this crater is even more intriguing:
Attached Image

(3D too)


--------------------
I always think before posting! - Marco -
Go to the top of the page
 
+Quote Post
slinted
post Apr 26 2006, 03:27 PM
Post #6


Member
***

Group: Admin
Posts: 468
Joined: 11-February 04
From: USA
Member No.: 21



As with the calibrated MER images, there are radiance offsets and factors that need to be applied to get each image into absolute units. They are in the PDS tags. Hilariously, in the map projected images, there are two tags for offset and two tags for scaling, labeled identically. They are significantly different in value, and there's no mention of which is actually supposed to be used...but by trial and error, I think it's the second of each that is appropriate to the map projected images (could be COMPLETELY wrong about this.)

Here's a couple simple image->RGB channel color versions, but with the scaling factors applied (not even close to true color, but a step in the right direction)

The Meridiani image, thumbnail is rotated (left is south), full size has an arrow pointing at Victoria:


And a crop of the full swath containing the water-ice crater on Vastitas Borealis


I'm surprised they didn't mention the larger ice sheet north of the crater in their original releases. It is quite a sight.
Go to the top of the page
 
+Quote Post
Nix
post Apr 26 2006, 05:54 PM
Post #7


Chief Assistant
****

Group: Admin
Posts: 1389
Joined: 5-January 05
From: Ghent, Belgium
Member No.: 136



Great work -as always, Daniel ohmy.gif

The larger ice sheet is indeed very impressive.

Nico


--------------------
photographer, space imagery enthusiast, proud father and partner, and geek.


http://500px.com/sacred-photons & http://www.awalkonmars.net

Go to the top of the page
 
+Quote Post
djellison
post Apr 26 2006, 06:32 PM
Post #8


Administrator
****

Group: Chairman
Posts: 13803
Joined: 8-February 04
Member No.: 1



BJORN - img2png has another 'requriement' smile.gif

Dan - did you get those via the map interface or elsewhere? The bottom image is superb.

Doug
Go to the top of the page
 
+Quote Post
slinted
post Apr 26 2006, 06:39 PM
Post #9


Member
***

Group: Admin
Posts: 468
Joined: 11-February 04
From: USA
Member No.: 21



Thanks Nix, Doug!

Doug: classical interface, searching by orbit number, which works like a charm.
Having just discovered these radiometric map projected images (thank you jaywee!!!), well, I'm in 'little kid meets candy store' land to say the least smile.gif

Here's another from much earlier in the mission.

In the Water at Martian South Pole image release, we saw an OMEGA false color image, and a b/w closeup of the South polar cap.

Here's that same area, in color (cropped, and at half res):

Go to the top of the page
 
+Quote Post
Nix
post Apr 26 2006, 08:41 PM
Post #10


Chief Assistant
****

Group: Admin
Posts: 1389
Joined: 5-January 05
From: Ghent, Belgium
Member No.: 136



Man I'm enjoying these.. Keep the candy coming tongue.gif

Nico


--------------------
photographer, space imagery enthusiast, proud father and partner, and geek.


http://500px.com/sacred-photons & http://www.awalkonmars.net

Go to the top of the page
 
+Quote Post
djellison
post Apr 27 2006, 06:12 PM
Post #11


Administrator
****

Group: Chairman
Posts: 13803
Joined: 8-February 04
Member No.: 1



Just getting stuff via the RSSD and I can see your folders on the server Dan smile.gif
Go to the top of the page
 
+Quote Post
djellison
post Apr 27 2006, 06:36 PM
Post #12


Administrator
****

Group: Chairman
Posts: 13803
Joined: 8-February 04
Member No.: 1



You know how some MER mosaics are large....

The Gusev obs from Jan 16th '04....oh my...

4295 x 75,543 ohmy.gif - call it 325 Megapixels.

Doug
Go to the top of the page
 
+Quote Post
Nix
post Apr 27 2006, 06:49 PM
Post #13


Chief Assistant
****

Group: Admin
Posts: 1389
Joined: 5-January 05
From: Ghent, Belgium
Member No.: 136



mad.gif I'm getting that interface too now, yet where do you get info on orbit numbers and such?

Nico


--------------------
photographer, space imagery enthusiast, proud father and partner, and geek.


http://500px.com/sacred-photons & http://www.awalkonmars.net

Go to the top of the page
 
+Quote Post
babakm
post Apr 27 2006, 07:48 PM
Post #14


Junior Member
**

Group: Members
Posts: 91
Joined: 27-January 05
From: Arlington, Virginia
Member No.: 159



QUOTE (djellison @ Apr 27 2006, 06:36 PM) *
You know how some MER mosaics are large....


I was playing with these a few months back and they made (what I thought was) a tidy computer setup slow to a crawl. I got bogged down in, what slinted calls "hilarious", tag hell and eventually gave up.
Go to the top of the page
 
+Quote Post
djellison
post Apr 27 2006, 07:50 PM
Post #15


Administrator
****

Group: Chairman
Posts: 13803
Joined: 8-February 04
Member No.: 1



oooo- pretty

Orbit 648, nIR, G and B, not calibrated, but just adjust to look 'nice' smile.gif

Doug
Attached thumbnail(s)
Attached Image
 
Go to the top of the page
 
+Quote Post

5 Pages V   1 2 3 > » 
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 23rd October 2014 - 08:44 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and 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 a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here.