Spot the error in this press page (pm me your answer)

http://marsrovers.jpl.nasa.gov/gallery/pre.../20040813a.html

Those that get it right get upgraded to the mighty accolade of Rover Driver

On this theme - would anyone like something like a Rover quiz at some point?

Doug

Slowing working out the acronyms.

MRL is Pancam images that are Radiometric and Geometricly adjusted. They will all be the proper brightness, but the left hand side of all the image is slightly skewed to compensate for the geometry of cameras and can almost be stitched straight together in photoshop etc.

From what I can tell - EDN files are the same - but not geometrically shifted. They're the full frame, but corrected colourifically, not geometrically. These would be best for use in some
thing like PTGui etc.

Doug

I'm not quite that technical

I just go

"Wrong

Wrong

Wrong

Wrong

Nearly there

OOO - OOO - Look - PRETY COLOURS "

Thing with these is that that are radiance calibrated - but also - geometrically adjust so they simply stitch one to the other all on their own. No PTGUI -just stitch-and-save

Pity that of the first 30 sols, Spirit lost about 10 to the flash crash. Opportunity will have a much better first 30 sols- but also - the 30-90 sol section for Spirit will be fab. The images from sols 38 - 42 are excellent, with nice look-backs to the lander which have been adjusted very badly for brightness on the JPL Raw pages.

What is the Navcam equiv of these pancam adjusted file (the MRL's )- with radiometric and geometric ajustments all taken out?

Doug

Doug

Bingo.

Doug

RIGHT - think I've found it

http://anserver1.eprsl.wustl.edu/mera/mera_search.htm

When using that ( probably the best search tool - and using I.E. , one can get netnats to download the complete list on the left ) I search for MPL file types - Results to be posted shortly

Doug

Alrighty then - got me some Rad files

BUT

Still the same issue. I'm converting to tif, tga, gif, or even raw using Thumbs Plus 4 - and the three image-sets that make a slice from horizon to midground to right infront of you change in colour

I'm going to try agian using img2png with 16 bit pleasure before REALLY going bonkers

Doug

I cant seem to find these RAD's - any pointers?

When I search for Radiance files - I get nothing.

Doug

(me=spaz - found them in the analysts notebook)

Well - Spirit saw Bonneville as something a LITTLE like that- but not quite so obvious.

Doug

There's an ENORMOUS number of Opportunity pancam images as well. WAY too many for me

I think I'll stick to spirit.

Last night - one or two of those had missing sections, but I'll put them together now.


(Hmm - still seems to be missing bits - how do you generate those two colour frames on the left?)

EDIT - found them - at the JPL Raw section, not the Exploratorium

Doug

I made this place so we could chat about the rovers and share a few pictures with one another and share ideas and techniques.

I didnt make it to be a file repository for images to be posted elsewhere. Believe it or not, it costs money to run this place - and frankly - and when it's the active and entertaining forum that we've all enjoyed - I dont begrudge the cost one iota. But when people take advantage and use it like some sort of storage to link to elsewhere, then I begrudge it quite a bit. Get your own webspace.

I've spoted quite a few direct links to images, instead of to a thread.

I'll be monitoring bandwidth very carefully and if it gets out of hand, members-only will be turned on and all those links will simply vanish unless you're signed in.

You have been warned.

Doug

I've always said with piccies I do - go and do what you want with them, but link to a thread, not an attachment, because then I see the bandwidth go up, but not the visitors

Doug

Got a good thread about 'looking back' - but this ones for stitched work done from these images.

First up -



Doug

New images up - and some colour pancam work of over the edge of the hills. Im on the case and will put something up shortly.

Doug

Possible V1 and MPF observation - http://www.msss.com/mars_images/moc/2004/01/04/

I think the answer is 'barely'

Full version of the pathfinder image here - http://www.msss.com/moc_gallery/r03_r09/im...5/R0501414.html


Other Pathfinder views...

http://www.msss.com/moc_gallery/e19_r02/im...1/R0101099.html
http://www.msss.com/moc_gallery/e01_e06/im...4/E0402227.html
http://www.msss.com/moc_gallery/e07_e12/im...2/E1201890.html



Doug

Yup - I belive that's the plan - and at least one observation per week will be from a public suggestion - but before we all subit them - I'd imagine all the landing sites are high priority already

Lots of info here -

http://hirise.lpl.arizona.edu/HiRISE/papers/

Doug

I feel another forum coming on

Doug

I'd say - looking at http://qt.exploratorium.edu/mars/spirit/na...00P1741L0M1.JPG

Bonneville is probably centre of view - maybe 20% down from the horizon.

The Lander is probably right on the left edge of that field of view at about the same range as bonnie - with backshell and parachute, a few hundred metres further away in about the same direction.

check the orbital imagery at www.msss.com to see the orientation of things.

Doug

Yeah - I think Bonneville is essentially lost in the jpg-noise of that Navcam image. If they're camping here for a while - a full pancam pan is probably in order. They tend to do that when they're IDD'ing as thats low-data-volume work.

Doug

Hadnt spotted that one before - another beauty

I now pronounce you IMG god!



All thats left now really is a way to un-adjust the 'auto levels' type affair that's been done on-board

Doug

I think the PNG's have had a little auto-levelling type treatment - as they are specifically a browsing format - not a scientific format

HOWEVER

I still have problems using the IMGS from the PDS

See these two - first from the old JPL Raw JPG's, the second from the IMG's.

http://mer.rlproject.com/raw_test_tall.jpg

http://mer.rlproject.com/img_test_tall.jpg

I'm asusming its on-board auto-exposure treatment that's leading to this - the sky, and the airbags giving a tendancy to underexpose compared to the middle section. Somehow - I need to know a way ( or have some highly clever individual write a wonderfull program to...) elimiate this and essentially equalize the images w.r.t. one another.

The difference between the two data sets s fairly obvious. The JPG's are all auto-levels ( a photoshop term) - or 'stretched' on an individual basis so that they are all different to one another. Three images at the same time of the same thing thru different filters will end up being stretched differently.

However - the IMGS are clearly not. They are, on a target-by-target basis, treated the same. i.e. Same time, same target, same filters, same stretch. I assume this was done to basically take the best of the 12bit data from the CCD, and squish it into 8bit data for transmission. Trouble his - where is the informationt hat shows this - and how does one go back to data that's all on a level playing field. Using the IMG's is the way to go, I'm sure - the top image is so much better in the IMG than the JPG version - it's just no comparison!


Doug

Right - done some side by side comparisons of different image sources and formats. Sorry about the slightly morbid subject matter - but it's probably the best target to see dynamic range being best demonstrated. There's no doubt in my mind which offers the most realistic format. (the top one -downloaded IMG's converted with NASA View) What I need now is a batch img processor to shove them into a 12 bit format I can use in photoshop. Remember of course - I look at all this with an Artistic Eye, not a scientific eye. I want to do the best job I can of making things appear as they would if you were there. You'd never see a white surface on mars - the tint of the sky colour would render them all salmon-pink / brown / reddish / call it what you will. It's for that reason that I prefer the first image. I just hope that sequential sets of images taken 'down' from horizon to surface dont change in brightness as have done before. Netants is working overtime downloading a LOT of IMG's as we speak

I was I was a programmer - I'm just an artist Give me a folder of images I can load in Photoshop, and I'll go away and make you some stunning images.

Give me something else - and I go "huh - yer what?"

Doug

Notice the difference between the Notebook image PNG



And the 'Raw Images' JPG



A much better image is now available - I am SUCH a happy boy

Doug