Welcome Guest ( Log In | Register )

Best-Yet Look of Valles Marineris, Great video and fantastic stills
post Mar 14 2006, 12:17 PM
Post #1


Group: Members
Posts: 530
Joined: 24-August 05
Member No.: 471

- http://www.jpl.nasa.gov/news/news.cfm?release=2006-035 - Years of Observing Combined Into Best-Yet Look at Mars Canyon

- http://themis.asu.edu/vallesspecial - Valles Marineris Special Feature Directory

- http://www.nasa.gov/mission_pages/mars/mis...y/20060313.html - More Images


- blue_scape / Nico -
Go to the top of the page
+Quote Post
Start new topic
post Jun 12 2006, 07:57 PM
Post #2


Group: Members
Posts: 192
Joined: 8-February 04
Member No.: 10

Melas Chasma in color:


I thought I would post the steps from the original image to my truer colour version.
Left: the original data as initially presented here

Middle: the results of laborious hand retouching on each colour channel to remove the light leaks which mar the performance of this otherwise excellent color camera. The violet channel in particular is horribly lightstruck to varying degrees in nearly all such images. Constant comparison with the original was done to minimize subjective retouching effects. The result attempts to emphasize the colour subtlties of the subject the camera is seeing and minimize the ideosynchrosies of the camera itself.

Right, the results of rebalancing the colour to resemble known ranges of Martian hues. This image was widely distributed. More image releases using this technique are forthcoming.

Attached thumbnail(s)
Attached Image
Go to the top of the page
+Quote Post
post Jun 12 2006, 09:21 PM
Post #3

Senior Member

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

Amazing work, Don.
I hope you appreciate this further processing of last image, on the right (essentially a simple sharpening - I removed your intermadiate result)...
Attached thumbnail(s)
Attached Image

I always think before posting! - Marco -
Go to the top of the page
+Quote Post

Posts in this topic

Reply to this topicStart new topic


RSS Lo-Fi Version Time is now: 6th October 2015 - 08:17 PM
Please read the Forum Rules and Guidelines before posting.

Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

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.
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.