Re: White particles

Posted by Simon Roussel on May 21, 2008; 2:28pm
URL: http://imagej.273.s1.nabble.com/White-particles-tp3696155p3696158.html

Dear Gabriel,
Your answer suggest that the particle analyser does take into account the
black background option in Process/Binary, which is not the case.
Analyse Particles always considers objects as black(=0).
Otherwise, I would not have given this suggestion.

Or, did I miss something ? (I just verified again ...)

Thanks
simon

PS: of course I can continue to invert my objects before analysing ...


On Wed, 21 May 2008 14:51:46 +0100, Gabriel Landini <[hidden email]>
wrote:

>On Wednesday 21 May 2008 11:57:46 Simon Roussel wrote:
>> Dear Wayne,
>> In binary images, ImageJ can deal with both white or black particles,
>> thanks to some black background chexboxes in Binary/Options, after
>> thresholding etc. However, I would find also convenient to have a black
>> background option in Analyse Particles, to analyse white (255) particles.
>> Simon
>
>I do not think that this is a good idea. It would be very confusing.
>
>Which will take precedence? The Binary Options or the particle analyser?
>One could end up doing erosion/dilation on one setting and particle analysis
>with another.
>
>G.
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