Imagine seeing the letter R. A top-down approach to letter recognition would sug
ID: 86561 • Letter: I
Question
Imagine seeing the letter R. A top-down approach to letter recognition would suggest that you have some knowledge of what the letter R should look like, and this knowledge is used to enable recognition. But think about all of the variations in the letter R – not just in computer fonts but also the endless variety of human handwriting. How does our knowledge of what an R should look like compare to the variety of letters we encounter? How does this knowledge enable recognition when the seen letter is not exactly the same as the mental representation of R? Is it possible to store every possible variation? How can this problem be solved? Include in your answer some (at least four) of the more extreme forms of the letter “R” that can still be recognized as the letter “R” in the proper context.
Explanation / Answer
The ability to recognise a word is by the use of the object cortex. As we start reading , the word box that has developed from the object cortex, this helps a person to recognise a shape from which ever view point it is seen. This word box, as we begin to start reading, recognises and learns how a word looks like. Once this recognition is done about the basic shape of a letter, it can identify any variations in the forms of the letter, as long as the letters are read in a left to right direction. The word box is what recognises the typical form of a letter and can recognise it in various forms. This comes as a combination of recognition from both the object box and the word box. The word box recognises q, p, b as same and the word box discriminates them.
The word box is based in the cortex , in the occipital cortex, and temporal and parietal cortices. The word box is a combination of these cortices along with the language processing area of the brain, in the left hemisphere. This creates a word recognition.
Some extreme forms of R that can still be recognised are
R, r, cursive r and also calligraphic r.