http://imagej.273.s1.nabble.com/Method-to-plot-RGB-pixel-values-tp3699004p3699013.html
Here's a possiblity. Use the Image>Colors>RGB split to generate
separate images of each channel. You can then use the Image
> Hi Michael,
>
> I tried this, and it certainly shows different color/intensity zones within
> my images. By rotating the image, it is easy to visualize fields of CL
> luminescence by mineral grains. Is there any way to extract data from the 3D
> plot as an XY field (something like an XY plot of just the RG data)?
>
> Henry
>
> Henry Barwood
> Associate Professor of Science, Earth Sciences
> Department of Math and Physics
> MSCX 312G
> Troy University
> Troy, Alabama
>
[hidden email]
>
> -----Original Message-----
> From: ImageJ Interest Group [mailto:
[hidden email]] On Behalf Of
> Michael Schmid
> Sent: Friday, June 22, 2007 9:48 AM
> To:
[hidden email]
> Subject: Re: Method to plot RGB pixel values?
>
> Hi Henry,
>
> you may have a look at the 3D Color Inspector/Color Histogram
>
>
http://rsb.info.nih.gov/ij/plugins/color-inspector.html>
> It plots the occurrence of pixels in three-dimensional R-G-B
> space.
>
> If you also want to do segmentation, you will need some type
> of principal component analysis (PCA) plugin, just google up
> "PCA" and "ImageJ". PCA plugins may require that you split the
> RGB channels and create a stack.
>
> Michael
> ________________________________________________________________
>
> On 22 Jun 2007, at 16:08, Henry Barwood wrote:
>
> > While reviewing an article on cathodoluminesce, I found an interesting
> > technique where the 0-255 values for RGB pixels were plotted to obtain
> > information about the provenance of some mineral grains. Is it
> > possible to
> > do something like this in ImageJ ? The plots were basically red
> > pixel value
> > plotted on blue pixel value because the green value did not vary a
> > great
> > deal (for this specific investigation). If there is a technique or
> > plug-in
> > for this sort of plotting, please let me know. Thanks.
> >
> >
> >
> > Henry Barwood
> >
> > Associate Professor of Science, Earth Sciences
> >
> > Department of Math and Physics
> >
> > MSCX 312G
> >
> > Troy University
> >
> > Troy, Alabama
> >
> >
[hidden email]
> >
> >
Joel B. Sheffield, Ph.D.