Digital Image Processing Questions and Answers
Q1.
State for the validation of the statement:
“In general-purpose for a digital image of zooming and shrinking, where Bilinear Interpolation generally is the method of choice over nearest neighbor Interpolation”.
Answer :
True
Q2.
Let S, a subset of pixels in an image, is said to be a connected set if:
Answer :
1. If for any pixel p in S, the set of pixels that are connected to it in Sis only one
2. If it only has one connected component
3. If S is a region
Q3.
For Image Enhancement a general-approach is to use a function of values of f (input image) in a predefined neighborhood of (x, y) to determine the value of g (output image) at (x, y). The techniques that uses such approaches are called _______
Answer :
Mask processing
Q4.
If r be the gray-level of image before processing and s after processing then which expression helps to obtain the negative of an image for the gray-level in the range [0, L-1]?
Answer :
s = c log (1 + r), c is a constant and r ≥ 0
Q5.
A typical Fourier Spectrum with spectrum value ranging from 0 to 106, which of the following transformation is better to apply.
Answer :
Log transformations
Q6.
What is the sum of all components of a normalized histogram?
Answer :
1
Q7.
What is the full form of CDF?
Answer :
Cumulative distribution function
Q8.
Inverse transformation plays an important role in which of the following Histogram processing Techniques?
Answer :
Histogram Matching
Q9.
For a local enhancement using mean and variance, what happens if the lowest value of contrast is not restricted as per the willingness of acceptance of value?
Answer :
Enhancement of the constant areas will also be the part of procedure
Q10.
Which of the following operation(s) is/are equivalent to negative transformation?
Answer :
NOT
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