NRSC 320 Chapter Notes - Chapter 5: Retina, Railways Act 1921, Likelihood Principle
14 Mar 2018
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Why is it so difficult to design a perceiving machine. The stimulus on the receptors is ambiguous. Perceptual system is not concerned with determining an object"s image on the retina. It starts with the image on the retina and its job is to determine the object out there that created the image. Inverse projection problem: task of determining the object responsible for a particular image on the retina; involves starting with the retinal image and extending rays out from the eye. Retinal image created could have been created by a number of other objects; therefore image on retina is ambiguous. Occurs anytime one object obscures part of another object. Frequently occurs in the environment, but people easily understand that the part of an object that is covered continues to exist. Use knowledge of environment to determine what is likely to be present. If objects are blurred, people can often identify most of them.
