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The Musical Gestures Toolbox for Max consists of a number of components and modules (with a GUI).

Components

• jcom.absdiff calculates the absolute difference between two numbers.
• jcom.autocrop% automatically crops an incoming video based on the colour difference in the frame. This component works well with motion images.
• jcom.autoscale automatically scales incoming values to a desired output range. Different modes allow for scaling based on a running window or general maximum and mininimum values.
• jcom.autosize% automatically resizes a jit.pwindow based on the size of the incoming matrix. This component is practical to use together with jcom.autocrop% or other objects/modules where the size of the matrix is changing dynamically.
• jcom.binary% converts the incoming video to a binary image. It has positive and negative modes.
• jcom.char2float% converts a matrix from Jitter type char to float32, keeping the planecount and dimensions of the matrix.
• jcom.checkplanes% adjusts subsequent modules if the plane number of a matrix changes. This component might help save some CPU.
• jcom.float2char% converts a matrix from Jitter type float32 to char, keeping planecount and dimensions of the matrix.
• jcom.fullscreen makes a patch fill the screen.
• jcom.fullscreen% makes a jit.window fill the screen.
• jcom.luma2rgb% converts a matrix from grayscale to RGB, but only if necessary. This component might save some CPU over jit.luma2rgb.
• jcom.mean% calculates the mean of the rows or columns in a matrix.
• jcom.motion% finds the motion image based on simple frame-differencing.
• jcom.passmatrixinfo% passes on information about the size and planes of a matrix.
• jcom.op similar to jit.op% but for floats.
• jcom.pi returns the value of pi.
• jcom.random returns a random float value. It is more flexible than random since it allows for setting the range of the random values.
• jcom.rgb2luma% converts a matrix from RGB to grayscale, but only if necessary. This component might save some CPU over jit.rgb2luma.
• jcom.spray% distributes a video matrix to multiple (8) windows on bang.

Modules

• jmod.analyzer∼ outputs various types of sound analysis. Based on analyzer∼ by Tris- tan Jehan.
• jmod.background% does a simple, and a little more advanced, background subtraction.
• jmod.blur% spatial blurring of the video.
• jmod.brcosa% changes brightness, contrast and saturation of the video.
• jmod.crop allows for cropping a video file by clicking and dragging in the video image.
• jmod.file_browser makes it possible to browse a list of files and pass on the file name to the audio and video players.
• jmod.fluidsynth∼ is a synthesiser module using soundfonts.
• jmod.hi outputs data from human interface devices (joysticks, etc.).261
• jmod.input% is the general video input module. Allows for using a camera, video file or a simple video synth.
• jmod.midiin outputs incoming midi data.
• jmod.motion% is the general motion module with lots of features for both quantitative and qualitative analysis.
• jmod.motiongram% creates motiongrams and videograms, both horizontal and vertical.
• jmod.mouse outputs data from the computer mouse.
• jmod.mouse.gdif outputs data from the computer mouse, formatted using GDIF.
• jmod.multidelay∼ is a multiple delay line audio effect.
• jmod.noise∼ plays various types of video noise.
• jmod.op% is a wrapper around jit.op.
• jmod.orsize% changes the orientation, size and rotation of the incoming video matrix.
• jmod.oscnet is a networking module using Open Sound Control for communication. Developed together with Tim Place.
• jmod.output% outputs video to an OpenGL window.
• jmod.phidgets.accelerometer gets data from the USB accelerometers from Phidgets Inc.
• jmod.phidgets.interfacekit gets data from the 8/8/8 USB sensor interfaces from Phidgets Inc.
• jmod.polhemus gets data from a Polhemus electromagnetic tracker connected through the serial port. The module has only been tested with the Polhemus Patriot.
• jmod.similarity% creates similarity matrices of the incoming video.
• jmod.sine∼ plays various simple waveforms, including sine, square and sawtooth.
• jmod.wacom gets data from a Wacom graphical tablet. Based on wacom by Jean-Michel Couturier. I made the first version of this module, and it has later been maintained by Pascal Baltazar.