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Reprocessing Historical Images - II, Restoring images from antiquated and/or poor quality sources
tedstryk
post Aug 29 2008, 03:34 PM
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I figure that it is time for another thread like this. I still find it astonishing to see the versions of a lot of images that are reproduced over and over again. For example, this is the last mosaic of Triton taken before the close encounter began. The version on the Planetary Photojournal is on the left, my version on the right. Clearly, this image was produced as part of the "instant science" campaign. They did a superb job getting images to the public in a speedy manner, but they are extremely rough, since the team was busy running the spacecraft. However, it is this version that keeps being recycled. Worse, the version on the photojournal is clearly scanned from a printed copy, causing further degradation.

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Here is a similar comparison, this time using Proteus (still 1989N-1 on the Planetary Photojournal!).

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This discussion started in the thread about Viking crescents but was getting off topic, so I thought I would start a new thread here.


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PDP8E
post Sep 18 2008, 01:53 AM
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Well....it has been about 2 weeks...two weddings, one funeral, one tropical storm, and the start of school again...but I did promise I would take a swing at the Proteus image.


First, my congrats go to Ted and the NASA people who have tried to work with this image. There are only a half dozen or so of actual DNs in the image. I took each DN level and processed it and then merged them. The eastern limb is a WAG ( wild a** guess) but there are faint impressions of a crater in the northwest and an elongated crater, centered in the due west bright area.

Warning: for obvious reasons, this is a highly processed image.....your mileage may vary...

(thanks to Emily for teaching an old angler to fish, and Ted for someone to aspire too!)


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Posts in this topic
- tedstryk   Reprocessing Historical Images - II   Aug 29 2008, 03:34 PM
- - Decepticon   WOW! Love it. More!   Aug 30 2008, 01:17 AM
- - Juramike   Got any tips or tutorials with before and after pi...   Aug 30 2008, 02:21 AM
- - ElkGroveDan   I can't get enough of this kind of thing. Tha...   Aug 30 2008, 02:23 AM
- - CAP-Team   Wow that Proteus result is stunning! So much s...   Aug 30 2008, 07:16 AM
- - Stefan   QUOTE (tedstryk @ Aug 29 2008, 05:34 PM) ...   Aug 30 2008, 02:34 PM
|- - tedstryk   QUOTE (Stefan @ Aug 30 2008, 02:34 PM) Te...   Aug 31 2008, 10:56 PM
|- - chiron   Hi Ted I have to agree what Stefan says. I think ...   Sep 1 2008, 05:39 PM
|- - tedstryk   Here is an example of the sequence.. Chirin, th...   Sep 1 2008, 06:57 PM
|- - Stefan   QUOTE (chiron @ Sep 1 2008, 07:39 PM) Its...   Sep 1 2008, 08:38 PM
|- - tedstryk   If you notice, there aren't interpretable feat...   Sep 1 2008, 09:28 PM
|- - tedstryk   Here is an example of a mosaic that combines a lot...   Sep 1 2008, 09:40 PM
||- - tedstryk   More related to my original post, here is the Trit...   Sep 1 2008, 10:14 PM
||- - ugordan   Great work, Ted! I especially like the Triton ...   Sep 2 2008, 08:07 AM
||- - tedstryk   Thanks. I eventually hope to do more of the image...   Sep 2 2008, 09:51 AM
|- - Stefan   QUOTE (tedstryk @ Sep 1 2008, 11:28 PM) I...   Sep 2 2008, 09:53 AM
|- - tedstryk   It is there, and I have brightened it in this vers...   Sep 2 2008, 11:11 AM
- - tasp   Would another means of validating the image be to ...   Sep 1 2008, 07:37 PM
- - djellison   I would agree - Stefan, you're not reading wha...   Sep 2 2008, 11:27 AM
|- - tedstryk   This is another image that I find interesting. I ...   Sep 2 2008, 12:02 PM
|- - Stefan   This discussion is obviously going in the wrong di...   Sep 2 2008, 02:28 PM
|- - tedstryk   Stefan, I discussed this earlier in the thread, bu...   Sep 2 2008, 05:11 PM
- - Tayfun Íner   I must agree with Stefan's skepticism. Ted...   Sep 2 2008, 02:48 PM
- - Tayfun Íner   Ted, let's take your Proteus image as an examp...   Sep 2 2008, 06:10 PM
|- - tedstryk   Are you referring to the smallscale 'features...   Sep 2 2008, 06:21 PM
- - Tayfun Íner   Yes I am, I have no problem with the features that...   Sep 2 2008, 06:47 PM
|- - tedstryk   This is an alternate take in which I tried to wipe...   Sep 2 2008, 07:58 PM
|- - tedstryk   Here is my Borrelly image at its original size. T...   Sep 2 2008, 09:53 PM
- - 4th rock from the sun   Hi, Just my small contribution to this topic. Her...   Sep 2 2008, 10:08 PM
|- - tedstryk   QUOTE (4th rock from the sun @ Sep 2 2008, 10...   Sep 3 2008, 12:04 AM
|- - tedstryk   Here is my calibrated base. Keep in mind that in ...   Sep 3 2008, 01:05 AM
|- - tedstryk   Here is another image that is shown in a very odd ...   Sep 6 2008, 09:53 PM
- - elakdawalla   I think it's fascinating to see a comparison o...   Sep 2 2008, 10:29 PM
- - PDP8E   Emily, I'll give it a shot !! (and t...   Sep 2 2008, 10:46 PM
|- - tedstryk   QUOTE (PDP8E @ Sep 2 2008, 10:46 PM) Emil...   Sep 3 2008, 12:01 AM
- - elakdawalla   In the spirit of teaching a man to fish... Voyage...   Sep 2 2008, 11:18 PM
- - tasp   If this suggestion involves much work, my apologie...   Sep 7 2008, 01:15 AM
|- - tedstryk   The data issues with those are totally different. ...   Sep 7 2008, 02:34 AM
- - tasp   I have no way of knowing how much effort is involv...   Sep 7 2008, 03:37 PM
- - PDP8E   Well....it has been about 2 weeks...two weddings, ...   Sep 18 2008, 01:53 AM
|- - tedstryk   One thing that I wanted to emphasize. The thing th...   Sep 18 2008, 03:13 AM
- - jekbradbury   I decided to take a look at the Proteus image as w...   Sep 19 2008, 12:39 AM
- - 4th rock from the sun   Hi all, I wrote a small program in Actionscript 3...   Feb 3 2009, 06:13 PM
|- - tedstryk   That looks like a good result, but could you expla...   Feb 4 2009, 02:46 AM
|- - 4th rock from the sun   "I am assuming this is used to reduce the ...   Feb 4 2009, 11:13 AM
|- - ugordan   QUOTE (4th rock from the sun @ Feb 4 2009, 12...   Feb 4 2009, 11:48 AM
|- - tedstryk   I have completed the Mariner-7 Meridiani mosaic. ...   Feb 17 2009, 09:53 PM
- - dvandorn   Ted -- is it true that Endeavour Crater is resolve...   Feb 18 2009, 01:37 AM
|- - mhoward   I can see a slight darkening where Endeavour is, I...   Feb 18 2009, 01:51 AM
|- - tedstryk   Yes, it is a barely detectable smudge. However, w...   Feb 18 2009, 02:36 AM
- - Phil Stooke   Yes, the trio of craters, with Endeavour at the no...   Feb 18 2009, 07:58 PM
|- - tedstryk   Yes, it does, especially in color. The image on t...   Feb 18 2009, 09:29 PM
- - vk3ukf   Hi, thanks for these pics, love them. I had to ha...   May 23 2009, 11:16 PM
|- - tedstryk   What did you use as your data source?   May 24 2009, 02:45 AM
- - vk3ukf   The sources were all from the net from various pla...   May 24 2009, 09:35 AM
|- - tedstryk   I think they come from http://nssdc.gsfc.nasa.gov/...   May 24 2009, 12:17 PM
- - vk3ukf   Yes, that's the d version alright, the h versi...   May 24 2009, 12:36 PM
- - peter59   Picture #1 Image source: NSSDC - 35 mm microfilm...   May 24 2009, 03:56 PM
- - vk3ukf   Hi Peter59, nice images. A 35mm film archive. Ca...   May 27 2009, 06:42 PM
- - jasedm   Not strictly reprocessing, more updating... I rece...   Jun 30 2009, 08:12 PM
- - Stu   QUOTE (jasedm @ Jun 30 2009, 09:12 PM) .....   Jun 30 2009, 10:03 PM
- - lyford   Very cool!   Jul 1 2009, 12:58 AM
|- - tedstryk   I've been fooling around with some really conv...   Aug 13 2009, 05:22 PM
|- - Stu   QUOTE (tedstryk @ Aug 13 2009, 06:22 PM) ...   Aug 13 2009, 05:41 PM
- - Phil Stooke   Fantastic, as usual, Ted. The Tempel 1 departure ...   Aug 13 2009, 06:59 PM
|- - tedstryk   I would have to look more carefully...I am tempted...   Aug 13 2009, 10:07 PM
- - Stu   He'll be far too modest to plug it himself, so...   Sep 10 2009, 09:17 PM
|- - tedstryk   I have added some updated versions of Galileo...   Sep 12 2009, 03:34 AM
- - machi   Hello I send some mosaics from Mariner 9. And so i...   Nov 8 2009, 08:04 PM
|- - 4th rock from the sun   Nice Mariner 9 images, really smooth. Good work.   Nov 9 2009, 10:34 AM
|- - tedstryk   Nice work!   Nov 9 2009, 05:02 PM
- - machi   Thanks! Now for something completely differen...   Nov 10 2009, 08:30 PM
|- - ugordan   QUOTE (machi @ Nov 10 2009, 09:30 PM) Now...   Nov 11 2009, 11:54 AM
- - cbcnasa   Machi very excellent work   Nov 11 2009, 12:32 AM
- - machi   Global mosaic from Mariner 9. Recent work.   Nov 11 2009, 11:14 AM
- - machi   I send one original image from Mariner 9 (mosaic i...   Nov 11 2009, 01:02 PM
- - ElkGroveDan   What is your source for the raw data? The one abo...   Nov 11 2009, 02:09 PM
- - machi   My personal archive is converted from http://pds-i...   Nov 11 2009, 02:21 PM
- - ElkGroveDan   I didn't realize that the data that old was av...   Nov 11 2009, 02:49 PM
- - machi   I think that these images are oldest electronicall...   Nov 11 2009, 03:04 PM
|- - john_s   I remember that mosaic well! I think it was ...   Nov 11 2009, 09:10 PM
- - Phil Stooke   "I think that these images are oldest electro...   Nov 12 2009, 02:47 PM
- - machi   Fantastic! Thank you very much. I didn't k...   Nov 12 2009, 03:46 PM
|- - tedstryk   The Mariner 6-7 images on that site have a few iss...   Nov 13 2009, 03:26 AM
|- - peter59   QUOTE (tedstryk @ Nov 13 2009, 04:26 AM) ...   Dec 25 2009, 02:00 PM
- - machi   Another variant of Miranda mosaic.   Nov 13 2009, 04:09 PM
|- - tedstryk   Excellent work!   Nov 14 2009, 04:02 AM
- - machi   Thanks! Especially in this case, I have strong...   Nov 14 2009, 08:32 PM
- - peter59   6N03 .. and bonus IMAGE 6N3 CAMERA A GRN2 FI...   Dec 25 2009, 02:03 PM
|- - tedstryk   Peter, I strongly agree.   Dec 25 2009, 04:07 PM
- - machi   "New" images from Mariner 9.   Jan 7 2010, 07:40 AM
- - Bjorn Jonsson   That first image is great - one of the best images...   Jan 12 2010, 12:39 AM


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