Re: Autothreshold B&W displays inverse

Posted by Wayne Rasband on Oct 10, 2009; 11:16am
URL: http://imagej.273.s1.nabble.com/Autothreshold-B-W-displays-inverse-tp3690826p3690828.html

On Oct 7, 2009, at 8:06 PM, Mike Cowperthwaite wrote:

> (Using 1.43g)
> When using Adjust|Threshold with "B&W" display mode, the thresholded
> image shown is the inverse of what you get when you click "Apply."  
> This
> is true regardless of the setting of "Dark background" checkbox.
>
> It is very confusing!  I can't believe it's intentional.  Could this  
> be
> fixed, please?

"Apply" in the Threshold window converts the image to binary using the  
Process>Binary>Convert to Mask command. The background (non-threshold)  
color used is determined by the "Black background" setting in the  
Process>Binary>Options dialog box. You can get an exact representation  
of the "B&W" mode window by using the Image>Flatten command in v1.43h,  
or Plugins>Utilities>Capture Image in earlier versions of ImageJ.

-wayne