Profile Plot of RGB Image
The profile tool works only
on gray level images.
To get three intensity plots
for an RGB image (all on the same plot and
in color):
1) Display the RGB image.
2) Convert to three separate
gray level images, one each for red, green
and blue:
a) 'TOOLS /
2 & 3 Variables / RGB!'. This selects the RGB image.
b) 'RGB overlay
/ rgb -> b'
'RGB overlay
/ rgb -> g'
'RGB overlay
/ rgb -> r'
Doing the colors in reverse
places the r image on top, for convenience.
3) Make plots for each of
the three images, with the appropriate color:
a) 'TOOLS /
Profiles / Image! This selects
the front image. Assume it is the red image.
b) 'Line on!'
Position line and set width as desired.
c) 'Plot!'
d) Choose color using
the Color menu item on the Menu
Bar.
e) Plots /
Change color (on the Menu Bar) This sets the color of
the plot to the color selected by step d.
f) Click on other two
images and repeat steps a-f to make colored
plots for them.
4) Combine the 3 color plots
into a single plot:
'Plots / combine
plots'. Select the three previous plots.
Make a shorter name for
this plot if desired