Vignetting, discussion about methods of resolution Options

[Tman]

Hi Nirgal and all, I would like to discuss about vignetting and methods of resolution for it. I'm mainly interested in mathematical methods that could automatically calculate and adjust the right grey value for each pixel in a single picture.

My current method works with more or less transparent layers over the original picture that so roughly are able to balance the grey values. A perfect layer have to be the exact inverted brightness difference of each picture with this shadow effects. This method is very effective if you get the correct inverted values. These shots of the Mars sky come nearly at such a perfect mask, but not always. And of course the center of the pictures lose much of theirs original brightness/luminance sadly.

I have in mind a mathematical method that can adjust each grey value in a pic in order to obtain a completely balanced brightness over the entire picture. But I'm not in the position to reach that. I only know one have to start with the calculation of the grey values in the center of the picture. In the center are quasi the reference values of the whole picture, if I'm correct.
Is there a possibility (mathematical method) to get (roughly) the same brightness and luminance like in the center over the whole picture from the MERs?

Greetings, Peter

[MichaelT]

I dont mind it running in IDL, but I would really like a batch processing tool.

Doug

Ok, that is something that I had in mind, too. I will implement a button to do batch processing soon.

Michael, consider this as a letter to Santa Claus... 

"I want a standalone version without IDL dependency".

Unfortunately, I do not have the ability to convert the program into a stand-alone version. The necessary IDL packages are quite expensive and the uni institute that I am working at did not buy them for that reason
If there is anybody who could help me with that problem, please tell me.

Michael