getBlue - use in jython to replace PIL?

Hello everyone,

Earlier, I used PIL in python to go through an image and "getpixel" -
getting the r, g, b, and alpha for pixel (x,y).  (Actually for a whole
line of (x,y)'s, but nevermind that).  The pixels in question are all
shades of grey, so r==g==b, and I only need one of these numbers for
each pixel.

So I'm looking through the image documentation for J2PSE, and saw
java's "getBlue" method under the ColorModel class.  It says that it
"Returns the blue color component for the specified pixel, scaled from
0 to 255 in the default RGB ColorSpace, sRGB."  Again, getting only
the blue value would be just fine for my current purposes, since
r==g==b.

But of course, since this documentation site is for java itself (and
not jython), it tells me all kinds of information I know nothing about
(public, private, etc), and doesnt tell me what I'd *most* like to
see: an example.

Does anyone have/know the location of a *simple* example/explanation
of how this method could be used in jython to determine the blue value
of a particular image?  I'm pretty new to the language, but like I
said I completely figured out how to do this in python/PIL earlier
today, I'm just trying to transfer it over (since I can't use PIL in
jython).

Any ideas/pointers would be appreciated!

Thanks,
Denise


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