  We employ a method involving an array detector to measure the transverse
spatial variation of the von Neumann Entropy (VNE) associated with the
polarization state of light for different light sources including the coherent
light from a diode laser, the chaotic light from an LED, the fluorescent
emission from a dye widely used as a contrast agent and also the downconverted
output from the process of Spontaneous Parametric Down Conversion which has
widespread applications in Quantum Optics as a source of entangled photon
pairs. Additionally, we studied the variation of the Stokes parameters as well
as von Neumann entropy with pixel binning in the array detector output.
