imagej MER basics - Page 9

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hortonheardawho


Posts: 3465

Reply: 161



PostPosted: May 28, 2012 8:58 AM 

dx, the processing I did to produce the image of reply 76 is all in the filename: p-2P176177088EFFAD80P2356L257sqtv-3ca-HD

First, the L257sqtv suffix says I used the color map ( R, G, B ) = ( L2, L5, L7 ) after a square root brightness correction ( sqt ) and a vignette ( v ) correction for each individual image.

I then assembled 3 images into a panorama ( p-...3 ). I then did an white balance color correction ( c ) followed by a brightness adjustment ( a ) for the finished panorama.

As a final step I cropped the panorama as an HD format ( -HD ) to make a pretty picture suitable for display on an HD TV ( or background image on a 9:16 ratio computer screen ).

The image data used was all downloaded from Analysts Notebook as .img files and imported into imagej.

I used lots of very specific parameters for the creation of the panorama using the program autostitch ( free! )that only come from almost daily experience using the program.

The white balance and final exposures used a half-century of experience in darkroom photography - first film and then digital. ( 50+ years ago I was a photographic lab technician in a company that did a lot of custom color work for the Federal government. )

Once you have done 10,000+ MER images you will appreciate the imagej macros.

dx


Posts: 1661

Reply: 162



PostPosted: May 28, 2012 4:32 PM 

h>>>

WOW on the imageJ SR transform...got an almost white-out image on the multiply then the SR transform brought a beautiful B/W pic. It happens so fast-its scary. I didn't know what to expect out of imageJ and don't know how you figured that out but it presents 3 nice L2 L5 L7-RGB's! [thought it was supposed to be 16-bit images]...anyway I tried both and will post later.

Thanks for your insight and the quick rundown. Very much appreciated. Feeling stronger at every attempt.

Yeah, more over 12000+,tremendous output man, but I do have 46 on flickr...LOLOL

yt
dx

dx


Posts: 1661

Reply: 163



PostPosted: May 28, 2012 10:10 PM 

h>>>

Spirit Sol 561. Lots of work here.

yt
dx

dx


Posts: 1661

Reply: 164



PostPosted: May 30, 2012 2:41 PM 

h>>>

Spirit Sil 477
Is there a method of reducing the blue, or is this color inherent in all the RGB's?

yt
dx

John Henry Dough


Posts: xxx

Reply: 165



PostPosted: May 30, 2012 3:15 PM 

The Dust on the camera Lens on the Rover is in BAD shape.

dx


Posts: 1661

Reply: 166



PostPosted: May 30, 2012 3:17 PM 

h>>>

Have you tried some of the Viking Lander pics? I had to crop 2 to get the same size in RGB for the color merge using both imageJ and PSP. What a hoot!!!! Never thought it would work out.

yt
dx

dx


Posts: 1661

Reply: 167



PostPosted: May 30, 2012 3:24 PM 

JHD>>>

How can you tell?

yt
dx

John Henry Dough


Posts: xxx

Reply: 168



PostPosted: May 30, 2012 11:50 PM 

I was mistaken now that is see your reference to Viking,,,it seemed to me at magnification that 163 appeared very Viken-ish,,,,is it or am I wrong,?

dx


Posts: 1661

Reply: 169



PostPosted: May 31, 2012 7:54 AM 

JHD>>>

Post 163 is Spirit Sol 561 and Post 166 is from the Viking Lander 1 in 1975 and that's its pad...and its still there on the Martian surface all covered with 37 years of red dust!!!!

yt
dx

hortonheardawho


Posts: 3465

Reply: 170



PostPosted: May 31, 2012 10:04 AM 

How to white balance an imagej image:

See the Flickr comments for the procedure details.

Really, dx, you can make any area any color you want...

Like the old 2+2 accountant joke goes "what do you want it to be"?

hortonheardawho


Posts: 3465

Reply: 171



PostPosted: May 31, 2012 6:04 PM 

More sol 477 image processing - from the original data:

see Flickr comments for descriptions.

BTW, the Analyst's Notebook is now current to sol 2790. Anyone have any favorites up to that sol that might benefit from original data processing?

dx


Posts: 1661

Reply: 172



PostPosted: June 1, 2012 12:59 PM 

h>>>

Spirit Sol 1013
Removing much of the blue sky into a foggy mix of orange/off-white without causing too much damage to the landscape.

yt
dx

dx


Posts: 1661

Reply: 173



PostPosted: June 1, 2012 1:03 PM 

h>>>

flickr'ed your account and saw your images of Spirit Sol 1013.

Thanks
yt
dx

Ben


Posts: 2270

Reply: 174



PostPosted: June 1, 2012 1:11 PM 

DX; Your 172 is the best image of Mars that I have seen. I can definitely relate to that. Everything fits. Very Happy

dx


Posts: 1661

Reply: 175



PostPosted: June 1, 2012 2:19 PM 

Ben>>>
Thank you...lets go rock hunting, got to be some good stuff just over that ridge!!! LOL
yt
dx

hortonheardawho


Posts: 3465

Reply: 176



PostPosted: June 1, 2012 3:09 PM 

dx, let me also offer my kudos for your Spirit sol 1013 photo.

Did you use the original data from Analyst's Notebook?

Ben


Posts: 2270

Reply: 177



PostPosted: June 1, 2012 3:45 PM 

DX; Don't need to go over the ridge. That chunk of a vesicular basalt flowin front of us shows the chilled boundary at the bottom of the flow.
Now we need to find the source of this remnant from the flow which appears to have covered a fairly large area on an undulating surface.

Should be a vent around here and I suspect it is at the top of one of the higher nobs. Cool Cool

dx


Posts: 1661

Reply: 178



PostPosted: June 1, 2012 4:50 PM 

h>>>

I do not lie, cheat or steal, and I have to say No sir, I did not use the ANbook.[please don't sigh] I looked at the images and working on that site scare me because of its size and complexity. I have tried several times-but I know I'd have to spend a great deal of time analyzing it to understand what can be done with the data and how to get it. But I will keep returning to its pages and try to grasp its complexity-maybe I can turn it around. If someone was beside me on my comp guiding me into the depth of the site,Step by step, I'd feel bold enough to attempt other searches, I'm overwhelmed and probably need a few stiff ones to get over that anxiety.

h>>>you have taught me quit a bit about using imageJ-macros, white balance, z-project, stacks etc...and I'm happy you liked the image in 172. Thank you for your patience.

Ben>>>
Be great to just walk around a site like the one in 172 and kick a few rocks down...got to be a hoot.

yt
dx

Mizar


Posts: 692

Reply: 179



PostPosted: June 1, 2012 6:57 PM 

dx, good to see your progress on your work! I'm also doing some experiments with images from Mars, but not worth posting here, as the experts doing! Kudos to you and our Master Horton!

John Henry Dough


Posts: xxx

Reply: 180



PostPosted: June 1, 2012 11:20 PM 

I was quickly caught up many sol's ago by dx's use of bright colors in his early on attempts,,,theses were quite good it seemed to me yes and also,kept them on my desktop for a week or so,for their difference,the Re: 172,,,
is Very natural I easily see where others are coming from,

Although I think for the average joe it a LOT about how many times can I magnify this and get detail of this and that rock/ripple/crack/etc.?

One thing seems to be written in stone::::dx is on his way!
JD

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