Since an image is basically a matrix, Octave is a very powerful environment for processing and analyzing 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 = imread ("myimage.jpg");
S = conv2 (I, ones (5, 5) / 25, "same");
[Dx, Dy] = gradient (S); In this example S contains the smoothed image, and Dx and Dy contains the partial spatial derivatives of the image.
| • Loading and Saving Images: |
| • Displaying Images: |
| • Representing Images: |
| • Plotting on top of Images: |
| • Color Conversion: |
© 1996–2018 John W. Eaton
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https://octave.org/doc/interpreter/Image-Processing.html