> Jarek,
>
> I believe that Wayne sent this macro last week (4/7/2006). FYI, I found
> the macro handy myself and I modified it somewhat to also return log
> tranformed values for linear OD measurements (Beer-Lambert) as well as
> allowing thresholding to eliminate low value pixels. Here it is:
>
> requires("1.35g");
> //f = File.open(""); // prompt for file name
>
> ImageName=getTitle();
>
> Dialog.create("Pixel Values Params");
> Dialog.addNumber("Thresh:", 240);
> Dialog.show();
> Thresh = Dialog.getNumber();
>
> count=0;
> sumlogs=0;
> sumpix=0;
> avelogs=0;
> avepix=0;
> for (y=0; y<getheight; y++ {
> showProgress y, getHeight ;
> for x=0; x<getWidth; x++ {
> if
> getPixel x,y <Thresh
> {
> logpix=log getPixel x,y /255 *-1;
> sumlogs=sumlogs+logpix;
> sumpix=sumpix+getPixel x,y ;
> count++;
> print x+"\t"+y+"\t"+getPixel x,y +"\t\t"+logpix ;
> }
> }
> }
>
> avelogs=sumlogs/count;
> avepix=sumpix/count;
> logavepix=log avepix/255 *-1;
> print ImageName+"\n"+"Thresh:"+Thresh+"\n"+"Ave of
> logs:"+avelogs+"\n"+"Ave of pixels:"+avepix+"\n"+"Log of
> AvePix:"+logavepix+"\n\n" ;
>
> Jim Deeds
>
>
>
>
>
> Jarek Grodek <
[hidden email]>
> Sent by: ImageJ Interest Group <
[hidden email]>
> 04/13/2006 07:48 AM
> Please respond to ImageJ Interest Group
>
>
> To:
[hidden email]
> cc: (bcc: James Deeds/PH/Novartis)
> Subject: brightness value of every single pixel according to
> XY coordinates of the
> image
>
>
> Hello,
>
> I'm still looking for a plugin which returns the brightness value of each
> single pixel in the picture according to the XY coordinates. I'd like to
> extract this data to Excel and calculate later. Does anyone knows
> something about it? is it available as plugin or just a simple macro?
> thanks in advance.
>
> greetings,
>
> Jarek Grodek