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Super-resolution challenge, Help requested by the science team
john_s
post Nov 1 2008, 12:16 AM
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Greetings:

Here's another chance to maybe help out the New Horizons science team! We are planning the Pluto imaging sequence, and are considering the best strategy for squeezing the maximum resolution out of our images, including "super resolution" techniques, particularly for the side of Pluto that faces away from us at close approach, which we will see with a disk diameter of only about 120 pixels in our high-resolution camera LORRI. As some members of this forum have done impressive work with super-resolution processing of MER images, maybe you can try your hand with some synthetic "Pluto" images to see what the potential is? This may be more challenging than for MER, because our PSF is relatively broad, about 2 pixels wide.

We want to know how many images to take of a given face of Pluto to get maximum benefit from super resolution techniques, if indeed they are useful at all.

I plan to generate a bunch of synthetic images with slightly different pixel positioning and smear, and with realistic noise levels, and then make them available for experiments to see how well they can be combined and sharpened to improve the resolution.

If you are interested in giving this a shot, let me know. Also let me know if you can work with 12-bit or 16-bit images, and if so what format is most convenient. I can easily make 16-bit FITS files, for instance. It may be that 8-bit PNGs will be adequate, too.

Thanks,
John.
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S_Walker
post Oct 16 2009, 04:51 PM
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My final version upsamples all 12 images, align then sum combined in Maxim. I then deconvolved the image twice; the first used a PSF of 1.6, 20 iterations, then a PSF of 1.2, 4 iterations.
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- john_s   Super-resolution challenge   Nov 1 2008, 12:16 AM
- - tedstryk   I am definitely interested. I will say this. Alt...   Nov 1 2008, 02:33 AM
|- - john_s   Cool! Tell me your preferred image format. J...   Nov 1 2008, 03:25 AM
|- - tedstryk   QUOTE (john_s @ Nov 1 2008, 04:25 AM) Coo...   Nov 1 2008, 12:47 PM
|- - john_s   So do you prefer TIFF files? If so, I have to fig...   Nov 1 2008, 03:00 PM
|- - tedstryk   QUOTE (john_s @ Nov 1 2008, 03:00 PM) So ...   Nov 1 2008, 03:04 PM
|- - john_s   Great, here's a file with 6 simulated images o...   Nov 1 2008, 04:19 PM
|- - john_s   And here's the other six... John.   Nov 1 2008, 04:27 PM
||- - john_s   Oops, there's a bug in those image sets- they ...   Nov 1 2008, 06:46 PM
||- - tedstryk   As far as stacking goes, these might be interestin...   Nov 1 2008, 06:58 PM
|- - siravan   QUOTE (john_s @ Nov 1 2008, 11:19 AM) Gre...   Nov 2 2008, 10:07 PM
|- - john_s   OK, here's a new and improved set of six FITS ...   Nov 3 2008, 09:10 PM
|- - john_s   Not sure why those two ZIP files ended up in the s...   Nov 3 2008, 09:15 PM
|- - john_s   And the rest of the images in PNG format...   Nov 3 2008, 09:19 PM
|- - john_s   By the way, the PSF in these simulations (not coun...   Nov 3 2008, 09:24 PM
|- - ugordan   Here's a flicker gif between a single frame an...   Nov 3 2008, 11:11 PM
|- - john_s   Nice! It looks like you did some sharpening- ...   Nov 4 2008, 12:14 AM
|- - ugordan   I used the Smart Sharpen filter in Photoshop, usin...   Nov 4 2008, 08:40 AM
- - siravan   Here is the effect of subpixel shift-and-add on th...   Nov 8 2008, 09:59 PM
|- - john_s   Thanks to both ugordan and siravan for those image...   Nov 10 2008, 08:41 PM
- - Fran Ontanaya   I had to try. 2x I used 5 images plus one to ...   Nov 13 2008, 09:54 AM
|- - tedstryk   Here is my take. I have versions with 4 frames, 6...   Nov 13 2008, 01:07 PM
|- - tedstryk   Here is a view of Triton when it was 120 pixels ac...   Nov 14 2008, 05:00 AM
- - john_s   This is a synthetic image using a Galileo photomos...   Nov 15 2008, 04:22 PM
|- - tedstryk   QUOTE (john_s @ Nov 15 2008, 04:22 PM) Th...   Nov 20 2008, 01:34 PM
- - Andrei   I'll take the challenge...I only hope that I...   Nov 19 2008, 01:23 PM
- - S_Walker   Sorry I'm late to this test, just joined the s...   Oct 16 2009, 04:43 PM
- - S_Walker   Next is all 12 images resized 2x, aligned and driz...   Oct 16 2009, 04:45 PM
- - S_Walker   My final version upsamples all 12 images, align th...   Oct 16 2009, 04:51 PM


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