Quotes
The problem of seeing and identifying a familiar object can be divided into two stages: coding and classifying. Coding reduces the multidimensional stimulus to a few features; classifying uses the features to identify the object. Most of what we know about classifying has come from engineers, while physiologists and psychophysicists have concentrated on the coding problem. How people recognize an object might seem trivial, because we do it so easily, but it has resisted all attempts to understand and explain it. Our past work has shown that letter identification begins with independent detection of features, and then integrates those features. We can say quite a bit about the feature detectors, and rather little about the feature integrator.
–Denis Pelli
