Re: manipulating ROI

Posted by Michael Schmid on Mar 25, 2015; 3:05pm
URL: http://imagej.273.s1.nabble.com/manipulating-ROI-tp5012164p5012166.html

On Mar 25, 2015, at 15:46, rabih assaf wrote:

> HOw to extract a ROI withoud the surrounding regions? (the duplicate don't do the work)
> thanks in advance

Hi Rabih,

if you want extract only the contents of a non-rectangular selection, you can use

(1) Duplicate and Clear Outside; then the outside becomes the background color. You can define the beckground color when you double-cklick the Eyedropper tool, click the "Reverse Foreground&Background" double arrow, select the color and reverse foreground&background again. Also the small symbol with black&white rectangles at bottom right can be of use.

(2) Duplicate, Edit>Selection>Make Inverse and Process>Math>Set to the desired backgorund value, or

(3) Copy and Paste into an new window.

Michael

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