Re: How should I apply mathematical correction of the gray levels consisting of subtracting the 2nd degree polynomial that best fits (least square method) the homogeneous (low variance) areas of the gray-level image

Posted by Gabriel Landini on
URL: http://imagej.273.s1.nabble.com/How-should-I-apply-mathematical-correction-of-the-gray-levels-consisting-of-subtracting-the-2nd-degre-tp5020659p5020660.html

On Monday, 14 May 2018 07:53:29 BST you wrote:

> applying mathematical correction of the gray levels. This
> type of image processing consists of
> subtracting the 2nd degree polynomial
> that best fits (least square method) the
> homogeneous (low variance) areas of
> the gray-level image. In the corrected
> image, each color represents a different
> mineral phase that can yield a quantitative
> volume fraction.
>
> How can I do this in ImageJ, I would like to do this work in black and
> white Scanning Electron Microscope Images. Thanks, with regards,

Have a look here. There are some links to polynomial fittings too:

http://imagejdocu.tudor.lu/doku.php?
id=howto:working:how_to_correct_background_illumination_in_brightfield_microscopy

Cheers

Gabriel

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