Digital Image Processing Questions and Answers
Q1.
What is the set of pixels of 8-neighbors of pixel p at coordinates (x, y)?
Answer :
(x+1, y), (x-1, y), (x, y+1), (x, y-1), (x+1, y+1), (x+1, y-1), (x-1, y+1), (x-1, y-1)
Q2.
The domain that refers to image plane itself and the domain that refers to Fourier transform of an image is/are :
Answer :
Spatial domain and Frequency domain respectively
Q3.
Using gray-level transformation, the basic function power-law deals with which of the following transformation?
Answer :
negative and identity transformations
Q4.
Which of the following transformations expands the value of dark pixels while the higher-level values are being compressed?
Answer :
Log transformations
Q5.
Which of the following transformation is used cathode ray tube (CRT) devices?
Answer :
Power-law transformations
Q6.
The transformation s = T(r) producing a gray level s for each pixel value r of input image. Then, if the T(r) is satisfying 0 ≤ T(r) ≤ 1 in interval 0 ≤ r ≤ 1, what does it signifies?
Answer :
It guarantees that the output gray level and the input gray level will be in same range
Q7.
The technique of Enhancement that has a specified Histogram processed image as result, is called?
Answer :
Histogram Matching
Q8.
In terms of enhancement, what does mean and variance refers to?
Answer :
Average gray level and average contrast respectively
Q9.
While implementing logic operation on gray-scale images, the processing of pixel values is done as _______
Answer :
String of binary numbers
Q10.
Which of the following arithmetic operator is primarily used as a masking operator in enhancement?
Answer :
Multiplication
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