A few questions about image display

[Alasdair McAndrew]

I've just started investigating octave as a possible open-source alternative
to Matlab for image processing, and my first impressions of it are very good
indeed.  However, I have some problems with regard to image display, using
gnuplot.  A grayscale image is displayed correctly, but an RGB image is
not.  If "im" is an m x n x 3 matrix representing the RGB image, then
"imshow(im)" shows the image far too bright - it has to be scaled with
"imshow(im/3)".  Why?

Also, is it possible to have gnuplot display an image with one screen pixel
= one image pixel?

Thanks,
Alasdair

-- 
Blog: http://amca01.wordpress.com
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