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HST Albedo Map Processing
ZLD
post Jul 27 2015, 01:16 AM
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I've almost made this post several times today but I had to go back and redo my work multiple times because I really just couldn't believe it.

Going into this, I was absolutely sure I wouldn't get anything from it. It just seemed so incredibly unlikely to work.

Heres the original HST 2002/2003 maps of Pluto to refresh you.


Below is the 2002/2003 combined observations of Pluto, run through my experimental image processing to bring out albedo variations.



Here is an animation fading between the above and scalbers latest high resolution map (downscaled of course). (13MB gif)

(ctrl + scroll wheel to zoom - maximum possible encouraged)

Finally, heres the single frame from the fade.



I've also taken this process further with a different map and it appears to continue bringing out small increments of detail each time, to what limit, I have no idea. One especially important note about all of this, its somewhat like finding Waldo without knowing what Waldo looks like. Without knowing what to look for, it would have been increasingly difficult to know how to set the parameters in each iteration, to avoid corrupting the details.

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I should also note, just in case it wasn't clear, the HST combined map was directly processed. Zero data from NH was involved in pulling out the details. The map from scalbers is just to compare.


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Posts in this topic
- ZLD   HST Albedo Map Processing   Jul 27 2015, 01:16 AM
- - Gladstoner   QUOTE (ZLD @ Jul 26 2015, 08:16 PM) Here ...   Jul 27 2015, 02:27 AM
- - ZLD   It looks pretty close to me as well. I started wo...   Jul 27 2015, 02:37 AM
- - nprev   Very cool work. It'd be interesting to see t...   Jul 27 2015, 03:20 AM
|- - JRehling   It seems like test data is not scarce: You could p...   Jul 28 2015, 12:09 AM
- - ZLD   It definitely works best with high contrast terrai...   Jul 27 2015, 04:07 AM
- - fredk   QUOTE (ZLD @ Jul 27 2015, 02:16 AM) I rea...   Jul 27 2015, 04:19 AM
- - ZLD   There is much more agreement between the images I ...   Jul 27 2015, 04:28 AM
- - nprev   That probably points to the way your process is ta...   Jul 27 2015, 04:50 AM
- - ZLD   To clarify again, all processing was performed on ...   Jul 27 2015, 05:07 AM
|- - wildespace   QUOTE (ZLD @ Jul 27 2015, 06:07 AM) I hav...   Jul 27 2015, 08:53 AM
- - Phil Stooke   OK... ZLD, let's be absolutely clear about wha...   Jul 27 2015, 05:24 AM
- - ZLD   Here are several highlighted features, that in my ...   Jul 27 2015, 05:38 AM
- - Phil Stooke   Yes,... but in the same image, 100 other points th...   Jul 27 2015, 05:55 AM
- - 4throck   Left: generated noise Right: wild processing of th...   Jul 27 2015, 04:03 PM
- - ZLD   Thats the type of correspondence I was looking for...   Jul 28 2015, 02:07 AM
- - alex_k   Hi ZLD, It's interesting, can you algorithm ex...   Jul 28 2015, 09:56 AM
- - ZLD   I only worked on a small crop due to the strange s...   Jul 28 2015, 03:51 PM
|- - alex_k   Thanks ZLD, a nice processing. It was interesting ...   Jul 28 2015, 04:14 PM
- - ZLD   Sure thing, Alex. I'd be very interested. This...   Jul 28 2015, 04:32 PM
|- - alex_k   QUOTE (ZLD @ Jul 28 2015, 09:32 PM) Sure ...   Jul 28 2015, 04:45 PM
|- - alex_k   QUOTE (ZLD @ Jul 28 2015, 09:32 PM) Sure ...   Jul 29 2015, 01:41 PM
- - ZLD   It looked computer generated from the set out so I...   Jul 29 2015, 03:05 PM
|- - alex_k   QUOTE (ZLD @ Jul 29 2015, 08:05 PM) It lo...   Jul 29 2015, 03:22 PM
- - ZLD   Well a wrong assumption will certainly wreck every...   Jul 29 2015, 03:23 PM
|- - alex_k   QUOTE (ZLD @ Jul 29 2015, 08:23 PM) Would...   Jul 29 2015, 04:58 PM
- - PDP8E   when I saw that 'test image' I fed it to a...   Jul 29 2015, 04:45 PM
- - ZLD   Haha PDP8E. Also, finally got around to looking ...   Jul 29 2015, 05:20 PM
|- - JRehling   An old chestnut from the technology of image file ...   Jul 29 2015, 06:18 PM
|- - alex_k   QUOTE (ZLD @ Jul 29 2015, 10:20 PM) Also,...   Jul 30 2015, 11:56 AM
- - ZLD   I absolutely do agree that at a measured 'imag...   Jul 29 2015, 08:08 PM
- - JRehling   That's all fair and well; making the process m...   Jul 29 2015, 11:11 PM


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