selecting/coloring all pixels of one value

[David Marshburn]

a collegue recalls seeing someone highlight all pixels of a given value in
a greyscale image with some specified color.  he does not remember how to
do this.  does this functionality ring a bell for anyone, please?  is
there a name or ImageJ function to do this, please?

thanks,
-david

[Harry Parker]

The answer to your question is: Use a LUT (a.k.a. LookUp Table).
1) Start with a LUT that performs a 1 to 1 mapping (i.e. value equals index) and change the one address you want to color to a contrasting color.  
2) Apply LUT to image.

That is all.



David Marshburn <[hidden email]> wrote: a collegue recalls seeing someone highlight all pixels of a given value in
a greyscale image with some specified color.  he does not remember how to
do this.  does this functionality ring a bell for anyone, please?  is
there a name or ImageJ function to do this, please?

thanks,
-david



--  
Harry Parker  
Systems Engineer  
Dialog Imaging Systems, Inc.
               
---------------------------------
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[Ekoputra A.B.]

Dear Harry,
Can you tell me how to performs a 1 to 1 mapping, as you say at point 1) ? Because i can't Find this function on my ImageJ. Is it need a plugins or else to do this ?
Thanks.

-Ekoputra A.B.-

Harry Parker wrote

The answer to your question is: Use a LUT (a.k.a. LookUp Table).
1) Start with a LUT that performs a 1 to 1 mapping (i.e. value equals index) and change the one address you want to color to a contrasting color.  
2) Apply LUT to image.

That is all.



David Marshburn <[e-mail]> wrote: a collegue recalls seeing someone highlight all pixels of a given value in
a greyscale image with some specified color.  he does not remember how to
do this.  does this functionality ring a bell for anyone, please?  is
there a name or ImageJ function to do this, please?

thanks,
-david



--  
Harry Parker  
Systems Engineer  
Dialog Imaging Systems, Inc.
               
---------------------------------
Get amazing travel prices for air and hotel in one click on Yahoo! FareChase