Simulated Human Vision..... Ian Overington

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

Image as normally viewed - visually clearly a simple disc

Original image viewed at X10 magnification - note differential greyscale values around edge which actually contain the local shape data

Edge Detection

As a clear & simple demonstration of high fidelity, sub-pixel edge detection it is easiest to consider one of the simplest objects there is - a black disc of diameter 15 pixels (as shown to the right).

Edge detection by conventional edge Detectors (such as Canny Edge Detector) when viewed at X10 magnification

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