32. Image Processing
Since an image basically is a matrix Octave is a very powerful
environment for processing and analysing images. To illustrate
how easy it is to do image processing in Octave, the following
example will load an image, smooth it by a 5-by-5 averaging filter,
and compute the gradient of the smoothed image.
I = loadimage ("default.img");
S = conv2 (I, ones (5, 5) / 25, "same");
[Dx, Dy] = gradient (S);
In this example
S contains the smoothed image, and
Dy contains the partial spatial derivatives of the image.
This document was generated on December, 26 2007 using texi2html 1.76.