# Digital Image Processing Questions and Answers – Fuzzy Techniques – Transformations and Filtering

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This set of Digital Image Processing Multiple Choice Questions & Answers (MCQs) focuses on “Fuzzy Techniques – Transformations and Filtering”.

1. What is the set generated using infinite-value membership functions, called?
a) Crisp set
b) Boolean set
c) Fuzzy set
d) All of the mentioned

Explanation: It is called fuzzy set.

2. Which is the set, whose membership only can be true or false, in bi-values Boolean logic?
a) Boolean set
b) Crisp set
c) Null set
d) None of the mentioned

Explanation: The so called Crisp set is the one in which membership only can be true or false, in bi-values Boolean logic.

3. If Z is a set of elements with a generic element z, i.e. Z = {z}, then this set is called _____________
a) Universe set
b) Universe of discourse
c) Derived set
d) None of the mentioned

Explanation: It is called the universe of discourse.
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4. A fuzzy set ‘A’ in Z is characterized by a ____________ that associates with element of Z, a real number in the interval [0, 1].
b) Generic element
c) Membership function
d) None of the mentioned

Explanation: A fuzzy set is characterized by a membership function.

5. A fuzzy set is ________ if and only if membership function is identically zero in Z.
a) Empty
b) Subset
c) Complement
d) None of the mentioned

Explanation: It is called an Empty set.

6. Which of the following is a type of Membership function?
a) Triangular
b) Trapezoidal
c) Sigma
d) All of the mentioned

Explanation: All of them are types of Membership functions.

7. Which of the following is not a type of Membership function?
a) S-shape
b) Bell shape
c) Truncated Gaussian
d) None of the mentioned

Explanation: All of the mentioned above are types of Membership functions.

8. Using IF-THEN rule to create the output of fuzzy system is called _______________.
a) Inference
b) Implication
c) Both the mentioned
d) None of the mentioned

Explanation: It is called Inference or Implication.

9. What is the independent variable of fuzzy output?
a) Maturity
b) Membership
c) Generic Element
d) None of the mentioned

Explanation: Maturity is the independent variable of fuzzy output.

10. Which of the following is not a principle step in fuzzy technique?
a) Fuzzify input
b) Apply implication method
c) Defuzzify final output
d) None of the mentioned

Explanation: All of the mentioned above are key steps in fuzzy technique.

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