December 1999
CO230 : COGNITIVE SCIENCE

QUESTION 4

Total Marks: 15 Marks

• Question 1
• Question 2
• Question 3
• Question 5
• Cover Page

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SUGGESTED SOLUTIONS
for Question 4

Compare the high level and low level vision processes with respect to:

(i)the type of knowledge used in each process [1 mark ]

(ii)the type of processing performed in each process [1 mark ]

(iii)the goals of each process [1 mark ]

Template matching and feature analysis are two techniques commonly used for performing pattern recognition.

(i)Describe the template matching technique.[3 marks ]

(ii)Describe the feature analysis technique.[3 marks ]

(iii)Banks can use template matching for recognising cheque numbers.Describe the properties of this application that make it suitable for template matching pattern recognition.[3 marks ]

(iv)Facial recognition systems for security purposes generally do not use template matching.Describe the properties of this application that make it unsuitable for template matching pattern recognition.[3 marks]