IPB

Welcome Guest ( Log In | Register )

36 Pages V  « < 15 16 17 18 19 > »   
Reply to this topicStart new topic
MSL Images & Cameras, technical discussions of images, image processing and cameras
walfy
post Nov 3 2012, 08:59 PM
Post #241


Member
***

Group: Members
Posts: 404
Joined: 5-January 10
Member No.: 5161



QUOTE (EdTruthan @ Nov 3 2012, 11:06 AM) *
...I created a Photoshop automation for myself...


ohmy.gif Oh, my, that is brilliant! Of course, the specs are in the exact same place! Easy to create an Action to remove them. Thank you for providing this.

Edit: Just tested it in CS5, works perfect.
Go to the top of the page
 
+Quote Post
Astro0
post Nov 4 2012, 06:34 AM
Post #242


Senior Member
****

Group: Admin
Posts: 3108
Joined: 21-December 05
From: Canberra, Australia
Member No.: 615



Ed, that's great. Took about 3-4 seconds on my computer for each file. Nice smile.gif

Had to make one small change to the 'save' section of the Action as it was coming up with the error because it was trying to save it to the folder on your desktop. Simple edit.

I'm placing your tool in the MSL FAQs.

Go to the top of the page
 
+Quote Post
Zelenyikot
post Nov 6 2012, 10:48 PM
Post #243


Member
***

Group: Members
Posts: 215
Joined: 23-October 12
From: Russia
Member No.: 6725



I noticed that the "schmutz" on the Mast cameras came after "The contamination test".
http://www.msss.com/news/index.php?id=14

My guess is it true? I wonder, what was the "The contamination test"?

before


after


--------------------
My blog on Patreon
Go to the top of the page
 
+Quote Post
mcaplinger
post Nov 6 2012, 11:23 PM
Post #244


Senior Member
****

Group: Members
Posts: 2511
Joined: 13-September 05
Member No.: 497



QUOTE (Zelenyikot @ Nov 6 2012, 03:48 PM) *
My guess is it true? I wonder, what was the "The contamination test"?

Is what true? The contamination test referred to was a very sensitive survey for outgassing products, having nothing to do with the crud on the focal plane. I've talked about the crud on the focal plane several times already.


--------------------
Disclaimer: This post is based on public information only. Any opinions are my own.
Go to the top of the page
 
+Quote Post
ronald
post Nov 9 2012, 09:04 PM
Post #245


Member
***

Group: Members
Posts: 154
Joined: 19-September 12
Member No.: 6658



Puzzled by Greenishs post I did compare MSL with MER filter images:
Attached Image
Attached Image
Attached Image

MER 257 vs. MSL 412

The MER images used above are the common exploratorium ones (compressed histogram). Compressing the MSLs before combining gives you more familiar looking false color images then (right).


Go to the top of the page
 
+Quote Post
Greenish
post Nov 9 2012, 09:38 PM
Post #246


Member
***

Group: Members
Posts: 219
Joined: 14-November 11
From: Washington, DC
Member No.: 6237



ronald, I did initially make them as straight composites of the JPGs. But they seemed very flat compared to the MER ones, and therefore I think less immediately informative. So since they are uncalibrated, variously exposed [I assume], lossy compressed images (and since I don't know enough to perform any particularly accurate processing) I figured I would aim for aesthetics more than a high level of precision. I tried not to lose much off of the ends of the histograms but did adjust the channels individually, but about the same amount each.

I sent a PM or two but if anyone has suggestions on a somewhat consistent way to make these filter composites I'd be interested. If it means lower contrast results, so be it. I looked back at the MER discussions but there's a whole lot there and it seems to assume a certain base level understanding that I may not have since this isn't the kind of engineering I do for work. I'm using ImageJ with the RGB Composer plugin, which seems almost too easy.
Go to the top of the page
 
+Quote Post
Zelenyikot
post Nov 17 2012, 03:05 AM
Post #247


Member
***

Group: Members
Posts: 215
Joined: 23-October 12
From: Russia
Member No.: 6725



Somebody can explain to me for what purpose photographing via three filters is made: green, dark blue and orange? To me it is not clear why orange instead of red. unsure.gif
Thanks



--------------------
My blog on Patreon
Go to the top of the page
 
+Quote Post
mcaplinger
post Nov 17 2012, 06:24 AM
Post #248


Senior Member
****

Group: Members
Posts: 2511
Joined: 13-September 05
Member No.: 497



QUOTE (Zelenyikot @ Nov 16 2012, 08:05 PM) *
To me it is not clear why orange instead of red.

http://www.lpi.usra.edu/meetings/lpsc2012/pdf/2541.pdf

I think L4 thumbnails end up looking orange because of some leaks from the green and blue bayer positions.


--------------------
Disclaimer: This post is based on public information only. Any opinions are my own.
Go to the top of the page
 
+Quote Post
Zelenyikot
post Nov 18 2012, 12:32 AM
Post #249


Member
***

Group: Members
Posts: 215
Joined: 23-October 12
From: Russia
Member No.: 6725



It seems to me this orange it is L3 L4 is red

Unfortunately in the name of images it is impossible to see filter number therefore I determine only by sequence of shooting: the orange goes the third, and red the fourth. Thanks for the answer and url


--------------------
My blog on Patreon
Go to the top of the page
 
+Quote Post
mcaplinger
post Nov 18 2012, 01:14 AM
Post #250


Senior Member
****

Group: Members
Posts: 2511
Joined: 13-September 05
Member No.: 497



QUOTE (Zelenyikot @ Nov 17 2012, 05:32 PM) *
It seems to me this orange it is L3...

Right, yes, L3. If you look at the QE of the Mastcam CCD http://www.truesenseimaging.com/all/download/file?fid=8.31 you can see that at the L3 bandpass of 750 nm the Bayer filters haven't become completely transparent but the green is getting leaky, so you get this orangish color.


--------------------
Disclaimer: This post is based on public information only. Any opinions are my own.
Go to the top of the page
 
+Quote Post
Zelenyikot
post Nov 18 2012, 01:43 AM
Post #251


Member
***

Group: Members
Posts: 215
Joined: 23-October 12
From: Russia
Member No.: 6725



Thanks for an explanation.


--------------------
My blog on Patreon
Go to the top of the page
 
+Quote Post
Airbag
post Nov 26 2012, 08:02 PM
Post #252


Member
***

Group: Members
Posts: 408
Joined: 3-August 05
Member No.: 453



Argh, so many beautiful panoramas yet still I see that MR "schmutz" (Emily's words) on just about every one of them. For those who can't run the Photoshop automation mentioned above, there is an alternate automated way of doing so using Linux/Unix/Solaris. It requires jpegpixi-1.1.1 (which in turn requires jpeglib). See "Remove bad pixels..." for more info.

For Mastcam right 1200x1200, the deadpixels.txt contents is:
CODE
597,315,3,5
509,362,2,4


I created this by desaturating one of the images that had obvious defects, then inverting and thresholding it to leave the "bad" pixels as white against a black background, so that jpeghotp could create deadpixels.txt. Some hand-tweaking of the exact size of the now white spots was necessary for the best corrective effect. It then becomes a simple matter of looping through all your MR 1200x1200 image source files and running jpegpixi on them, e.g.:
CODE
for i in *.jpg
do
  jpegpixi -f deadpixels.txt $i fixed.jpg
  mv fixed.jpg $i
done


Fast, and lossless (other than the corrected pixels, obviously!). Adjust contents of deadpixels.txt as necessary for other image sizes etc.

Airbag
Go to the top of the page
 
+Quote Post
ronald
post Nov 26 2012, 09:20 PM
Post #253


Member
***

Group: Members
Posts: 154
Joined: 19-September 12
Member No.: 6658



Great Airbag - Thankyou! Its allways nice if you can do things quickly on the command line smile.gif
Go to the top of the page
 
+Quote Post
RoverDriver
post Nov 26 2012, 10:20 PM
Post #254


Member
***

Group: Admin
Posts: 976
Joined: 29-September 06
From: Pasadena, CA - USA
Member No.: 1200



QUOTE (Airbag @ Nov 26 2012, 12:02 PM) *
Argh, so many beautiful panoramas yet still I see that MR "schmutz" (Emily's words) on just about every one of them. For those who can't run the Photoshop automation mentioned above, there is an alternate automated way of doing so using Linux/Unix/Solaris. It requires jpegpixi-1.1.1 (which in turn requires jpeglib). See "Remove bad pixels..." for more info.
....


Airbag, thanks for this pointer. Just wanted to let people know that this package is also available in Mac OSX as a Mac Ports.

Paolo


--------------------
Disclaimer: all opinions, ideas and information included here are my own,and should not be intended to represent opinion or policy of my employer.
Go to the top of the page
 
+Quote Post
ronald
post Nov 29 2012, 11:56 AM
Post #255


Member
***

Group: Members
Posts: 154
Joined: 19-September 12
Member No.: 6658



How goes this and this (or this) together?

This still puzzles me - below you see

The Bright - The Aligned - The Dark.
Attached Image


rolleyes.gif
Go to the top of the page
 
+Quote Post

36 Pages V  « < 15 16 17 18 19 > » 
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 29th April 2024 - 01:04 PM
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 funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member.