getting-started(7) Numm Tutorials getting-started(7)
NAME
getting started - numm installation and usage
SYNOPSIS
numm-run FILE
import numm
DESCRIPTION
numm is a python library -- the bastard child of Processing.org and MATLAB, if you will -- that fuses python, numpy, and gstreamer together
to create a numerical-computing environment for multimedia generation, analysis, and interaction.
Installation
A Debian package is provided for ease of installation on Debian and derivative operating systems, such as Ubuntu; we recommend you abandon
alternative systems and install Debian, but in the interim direct your attention to virtualization software such as VirtualBox.
The following command downloads and installs numm:
% wget http://numm.org/numm/releases/python-numm_0.1-1_all.deb
% sudo dpkg -i python-numm_0.1-1_all.deb
Usage
At its simplest, numm provides three pairs of invertable functions that connect common media formats with numpy:
Images represented as (height, width, color) numpy.uint8 arrays.
o image2np(path) -> np
o np2image(np, path)
Sounds as (frames, channels) numpy.int16s
o sound2np(path) -> np
o np2sound(np, path) # XXX: must be .wav
Videos as (frames, height, width, color) numpy.uint8s
o video2np(path) -> np
o np2video(np, path) # XXX: must be .mkv
For rapid-prototyping of interactive numpy-based audio-visual experiments, the numm package has a real-time mode. The numm package
installs a program named numm-run, which launches (and reloads on modification) python scripts that may implement any subset of the follow-
ing functions, which are asynchronously called as needed:
o video_in(a) # webcam
o video_out(a) # mutate a in-place to set video
o audio_in(a) # mic
o audio_out(a) # mutate a for audio output
o mouse_in(type, px, py, button)
o keyboard_in(type, key)
SEE ALSO
numm-run(1), numm.one-bit-instrument(7), numm.spectral-analysis(7)
numm February 2012 getting-started(7)
