[X] My Assistant

[Bjorn Jonsson]

I'm curious to know how people have been dealing with badly smeared images to reduce or eliminate the smear. I'm making 20000x10000 pixel global maps of Ganymede and Callisto. Lots of the highest resolution Voyager 1 images are badly smeared but I really want to use them in the maps if possible - and use them without smear (otherwise the maps get too ugly). I've been experimenting with the Smart Sharpen filter in Photoshop. I'm rather happy with the results I've had but before I start reprojecting these images and adding them to the maps I'm curious to know if anyone knows of something even better.

Here are two examples from Voyager 1 where I attempted to desmear smeared images using the PS Smart Sharpen filter. The original is shown together with a desmeared image. One is from a moderately smeared partial image of Callisto and another one is a badly smeared image of Ganymede. As indicated above I'm rather happy with the results but if something better is possible I'd like to know.

Callisto:



Ganymede:

[machi]

I'm using mostly Parallel Iterative Deconvolution plugin made by Piotr Wendykier (method WPL- Wiener Filter Preconditioned Landweber).
Here is PSF which I used for the Ganymede image. It was quick derivation from one of the small bright craters with some fiddling with brightness and eraser
(so results could be even better with more effort).

Attached image(s)