Re: erase microstructure part based on color

Posted by Michael Schmid on Nov 12, 2009; 9:26am
URL: http://imagej.273.s1.nabble.com/erase-microstructure-part-based-on-color-tp3690487p3690488.html

Hi Richard,

use Image>Color>Split Channels to separate the colors.

Then use Process>Image Calculator to find a combination of the color  
channels (e.g. with "Average") that looks like you want.
Instead of the built-in Image Calculator you can also use the  
"Calculator Plus" or "Blend Images" Plugin from the ImageJ Web site  
(the latter has preview).

Michael
________________________________________________________________

On 11 Nov 2009, at 19:54, Richard Basary wrote:

> Hi All,
>
> I have images with three different colors, I want to get rid a  
> black color since it not represent part of microstructure and keep  
> the orange (for copper) and grey (for graphite). When I change to 8-
> bit and threshold, the Image J counts holes (black) as a part of  
> microstructure/graphite. Does any one know how to get rid of the  
> holes image and left with grey and orange do that?
>
> Thanks
>
> -Richard-
>
> Richard M. Basary
> [hidden email]