... be made proposing an integration of the two to provide a more complete description of the structure and processes of the object recognition system. There are at least three issues that models of object recognition seek to address. The first of these is how the cognitive system recognises a three-dimensional figure from a two-dimensional retinal image. Secondly, and related, is the question of whether the object recognition process is viewer-centred or object-centred. That is, is it just as easy to recognise an object no matter what position it is in (if this was the case, an object-centred model would be appropriate)? Or does ease and speed of recognition depend on where the object is in relation to the viewer (in this case a viewer-centred model would be more accurate)? Thirdly, do we have a stored knowledge of structural descriptions? The following two models focus on these issues to differing degrees. As ...

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