## NPTEL Digital Image Processing Week 4 Assignment Answers 2024

1.

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2.

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3. For an image, the type of Interpolation where the intensity of the four neighboring pixels is used to obtain intensity a new location is called_______________.

a) Bilinear interpolation

b) Cubic interpolation

Bicubic interpolation

d) Nearest neighbor interpolation

Answer :-

4. Which of the following B-spline is not symmetric and hardly used?

a) Constant

b) Cubie

c) Linear

d) Quadratic

Answer :-

5.

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6. The type of Interpolation in which the intensity for an unknown location is found by assigning

the intensity of the nearest pixel is_____________.

a) Bicubic interpolation

b) Constant interpolation

c) Cubic interpolation

d) Bilinear interpolation

Answer :-

7. What are the desirable properties of an interpolation function?

I. Finite Region of Support.

II. Smooth Interpolation.

III. Shift Invariant

a) Only I and II.

b) Only II and III

c) None of I, Il and III.

d) All I. IT and III.

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8. Zooming of an image can be viewed as______________.

a) Over sampling

b) Under sampling

c) Critical sampling

d) Nyquist sampling

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9. What kind of sampling is required for scaling down (Shrinking) of an image?

a) Under sampling

b) Critical sampling

c) Over sampling

d) Nyquist sampling

Answer :-

10. Which of the following B-spline function has maximum region of support?

a) Quadratic

b) Cubic

c) Linear

d) Constant

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