From: rkornilo@nyx.cs.du.edu (Ryan Korniloff)
Subject: Re: Nssd CD-ROM
Organization: University of Denver, Dept. of Math & Comp. Sci.
Date: Mon, 14 Dec 92 04:08:52 GMT

>Newsgroups: sci.space
>Path: mnemosyne.cs.du.edu!nyx!rkornilo
>From: rkornilo@nyx.cs.du.edu (Ryan Korniloff)
>Subject: Re: NSSDC Datata on CD-ROM
>Message-ID: <1992Dec6.223615.25128@mnemosyne.cs.du.edu>
>Sender: usenet@mnemosyne.cs.du.edu (netnews admin account)
>Organization: University of Denver, Dept. of Math & Comp. Sci.
>Date: Sun, 6 Dec 92 22:36:15 GMT
>
>>Path: mnemosyne.cs.du.edu!mercury.cair.du.edu!copper!vexcel!ncar!elroy.j
>l.nasa.gov!kelvin.jpl.nasa.gov!baalke
>>From: baalke@kelvin.jpl.nasa.gov (Ron Baalke)
>>Newsgroups: sci.space
>>Subject: Re: NSSDC Data on CD-ROM
>>Message-ID: <1992Dec6.001514.1634@elroy.jpl.nasa.gov>
>>Date: 6 Dec 92 07:49:21 GMT
>>References: <1992Dec5.033643.16554@mnemosyne.cs.du.edu>
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>>Organization: Jet Propulsion Laboratory
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>>
>>In article <1992Dec5.033643.16554@mnemosyne.cs.du.edu>, rkornilo@nyx.cs.
>u.edu (Ryan Korniloff) writes...
>>>>Xref: mnemosyne.cs.du.edu sci.space:27435 alt.sci.planetary:363 alt.cd
>r
>>>m:6194
>>>>Path: mnemosyne.cs.du.edu!mercury.cair.du.edu!copper!vexcel!ncar!ames!
>l
>>
>>>>>Has anyone looked at these images?  Are the pictures very detailed an
>
>>>>>diverse?  
>>>>
>>>>Yes.  Keep in mind the images are the raw unprocessed data from Voyage
>.
>>>>The images are black and white.
>>>>
>>>Black and white!? Well, I understand that Voyager's camras took 3 pictu
>es
>>>to make a complete color image - in a green, then red, then blue (was i
>
>>>yellow??) filter. Then, on the ground, the images were processed to mak
>
>>>the color image. 
>>
>>This is true, except the color filters normally used by Voyager are oran
>e,
>>green and blue.  From a scientific viewpoint, the raw data is more impor
>ant.
>>As new image processing techniques are developed, you can always go back
>>to the original data and squeeze out more information.
>>
>>>Can this be done with IMDISP or any other image
>>>displaying software? 
>>
>>With IMDISP, no.  I have looked into it, and it is not a trivial process
>
>>First, the three images have to lined up properly. Second, you have to a
>count
>>for differences between the images due to spacecraft movement and planet
>moon 
>>rotation.  Third, you have to adjust for the orange filter (Voyager didn
>t
>>have a red filter).  The only software I know of that does all of this
>>is VICAR, which was developed by the Image Processing Lab at JPL.
>>
>>>I was relly excited with the prospect of purchasing
>>>CD-ROMs of the images. Now I'm not so sure it would be worth it for me.
>>>Is it the same for Magellan?? 
>>
>>The Magellan images are different.  Its images were derived from radar
>>bounced off the surface of Venus.  You cannot get a true color image fro
>
>>the Magellan data.  Magellan did not have a camera - it would
>>of been useless on a cloud shrouded planet like Venus.  So yes, the Mage
>lan
>>images are black and white, too.  However, in some of the press released
>>photographs, a yellow-orange color palette was applied to the image.
>>This color palette came from a Venera lander image from the surface of
>>Venus.
>>
>>>And what about the Mars Observer in the
>>>future? Are thoes images going to be in B/W?
>>
>>Yes, and this is true for Galileo, too.  In fact, all of the cameras 
>>carried by  planetary spacecraft were black and white cameras.
>>     ___    _____     ___
>>    /_ /|  /____/ \  /_ /|     Ron Baalke         | baalke@kelvin.jpl.na
>a.gov
>>    | | | |  __ \ /| | | |     Jet Propulsion Lab |
>> ___| | | | |__) |/  | | |__   M/S 525-3684 Telos | The 3 things that ch
>ldren 
>>/___| | | |  ___/    | |/__ /| Pasadena, CA 91109 | find the most fascin
>ting:
>>|_____|/  |_|/       |_____|/                     | space, dinosaurs and
>ghosts.
>
>Ok, then I will there be any way of obtaining VICAR?? I guess that it
>would be hands off to ordinary people like myself.
>
>Also, there is a program for the IBM PC called Vista Pro. To be as short
>as possible in explaining this, it is a 3D landscaping gernerator that
>accepts the U.S. Geological Survey's Digital Elivation Model images. You
>can also creat liniar flybys with it. Can I do this with the Magellan
>images or any other that are available? And if so, what other images are
>available??? And, where can I get them?
>
>
>        -- Ryan Korniloff
>        -- rkornilo@nyx.cs.du.edu
>

I posted the above message last week.^^^ I'm hoping this time somone will
answer my questions...

        -- Ryan Korniloff
        -- rkornilo@nyx.cs.du.edu