Add octave setup steps

README.md

@@ -37,5 +37,29 @@ and then install `mlpy` from GitLab:
 pip install git+https://gitlab.fbk.eu/MPBA/mlpy.git
 ```
 
+#### OCTAVE
+`octave` is needed as some first order features are extracted using functions not yet implemented in Python.
+
+To install `octave` run in a Terminal:
+```bash
+apt install octave
+apt install liboctave-dev
+```
+
+Open the `octave` prompt:
+```bash
+octave
+```
+
+and run:
+```octave
+pkg install --forge image
+```
+
+and then in a Terminal:
+```bash
+conda install -c conda-forge oct2py
+```
+
 ## Pretrained models
 We share the weights of the models, as described in the manuscript. See folder [pretrained_weights](pretrained_weights).
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