Digital Image Processing Nptel Week 4 Answers
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Digital Image Processing Nptel Week 4 Answers (July-Dec 2025)
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Question 1. An image of size 9 × 9 is given. What will be the intensity at location (3.3, 3.6) using a modified linear interpolation?
a) 32.42
b) 37.60
c) 35.14
d) None of the above
Question 2. A one-dimensional function f(t) is given. What will be the value at location t = 6.3 using modified cubic interpolation?
a) 2.65
b) 2.34
c) 2.95
d) 2.58
Question 3. In what type of interpolation is the intensity for an unknown location found by assigning the intensity of the nearest pixel?
a) Bicubic interpolation
b) Constant interpolation
c) Cubic interpolation
d) Bilinear interpolation
Question 4. Which of the following B-spline functions has the maximum region of support?
a) Quadratic
b) Linear
c) Constant
d) Cubic
Question 5. A one-dimensional function f(x) is given. What will be the value at location x = 6.3 using modified constant interpolation?
a) 2.43
b) 2.34
c) 3.00
d) 2.40
Question 6. Which of the following B-splines is not symmetric?
a) Constant
b) Quadratic
c) Cubic
d) Linear
Question 7. This question has Statement 1 and Statement 2. Of the four choices given, choose the one that best describes them.
Statement 1: An interpolation function must have finite region of support.
Statement 2: An interpolation function should have smooth interpolation.
a) Statement 1 is True and Statement 2 is False
b) Statement 1 is False and Statement 2 is True
c) Statement 1 is True and Statement 2 is True
d) Statement 1 is False and Statement 2 is False
Question 8. This question has Statement 1 and Statement 2. Of the four choices given, choose the one that best describes them.
Statement 1: An interpolation function must be shift invariant.
Statement 2: An interpolation function must be shift variant.
a) Statement 1 is True and Statement 2 is False
b) Statement 1 is False and Statement 2 is True
c) Statement 1 is True and Statement 2 is True
d) Statement 1 is False and Statement 2 is False
Question 9. What kind of sampling is required for zooming of an image?
a) Under sampling
b) Critical sampling
c) Over sampling
d) Nyquist sampling
Question 10. In what type of interpolation is the intensity of the four neighboring pixels used to obtain the intensity at a new location?
a) Constant interpolation
b) Bicubic interpolation
c) Nearest neighbour interpolation
d) Bilinear interpolation
These are Digital Image Processing Nptel Week 4 Answers