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Demonstrations

Simulated Human Vision..... Ian Overington

Location: Eastbourne. UK
ianoverington@simulatedvision.co.uk ............ www.simulatedvision.co.uk

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Whole Frame Motion or Displacement
(Fusion)

An important aspect of human visual function is that, overlaid on the very high (sub-pixel) edge sensing capability which provides us with our main high resolution visual image, there are a series of progressively coarser, concentric, edge sensing ‘receptive fields’ which are fed & derived from the primary sensing system. These concentric receptive fields are available for each eye separately and as a progressive temporal data stream. Hence the effectively overlaid data are available for both temporal comparison (optical flow) and for inter-eye comparison (large scale and whole field binocular fusion). Furthermore, for scenes containing general outdoor ‘near & far’ 3D depth (as opposed to classical close-up stereopsis), these same concentric receptive fields provide all the necessary facilities to generate 3D perceptual ‘maps’.

Continued

The basic simulation of vision as built into SHV is normally of the processing originating from the so-called ‘midget’ ganglion system which is responsible for our high resolution form vision. However, it has been found that, if one presumes effectively identical processing capabilities for the coarser functions, it is possible to derive distributions of local stereo displacement or local frame to frame motion (the latter as a directional vector) at each of the lower resolutions over a range of magnitudes and to an accuracy both of which are proportionately scaled to the relative resolutions.