Multi-parameter images

It is a function from the rectangle (in 2D) to the parameter space which is usually an array.

Parameter spaces:

• Binary Images: {0,1} (1 parameter)
• Gray scale images: {0,...,255} (1 parameter)
• Color Images: {0,...,255} x {0,...,255} x {0,...,255} (3 parameters)

For videos add another parameter (time).

Also "Almost all physical units can be used to make images and multivariate images: temperature, gravitational field, impedance, magnetic field, electrical field, mass, wavelength, ultrasound wavelength, polarization, electron energy etc." [1].