Posted by
Sami Badawi-2 on
Jun 26, 2009; 2:39am
URL: http://imagej.273.s1.nabble.com/How-to-recognize-tp3691836p3691839.html
Hi Clair,
I had a similar problem and added a utility: ColorReplacer to the
ShapeLogic plugin.
Select ColorReplacer and in the dialog enter the target color value
and the color distance. It will turn all pixels that are close than
the color distance into black and the rest into white if you select
the mask option. Then you can use the histogram to see how many black
pixels you have.
There is probably a simpler way to do this. Say use DeluxePaint on the Amiga.
-Sami Badawi
http://www.shapelogic.orgOn Thu, Jun 25, 2009 at 3:22 PM, Clair Dubon<
[hidden email]> wrote:
> Hello, I am new on Image J, and I need to measure the color areas on my interest on a given picture, to compare treated vs control images.
> After clicking “List” on a RGB histogram, I get the whole surface values for each color of the photo, from 0 to 255. It happens that it is hard to determine which ones are the values matching the interest areas, and which ones aren´t. Several years ago, with the Commodore Amiga there was a software that, when clicking on a given value of the histogram, it blinked in red in the picture, showing there the matched areas. Is there any possible way to do something like this with Image J, by clicking on values of the Histogram? I don´t like to use gray scale pictures, since the values might be mixed, and I am unable to recognize which ones belong to interest areas and which ones doesn´t.
> It would be very important in order to determine the surface area of interest values, since I could change the similar color to the noninterest areas, thus permitting me to measure only those ones I need.
> Thanking you in advance, sincerely
> Naly
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