NPTEL Digital Image Processing Week 8 Assignment Answers 2024

Sanket
By Sanket

NPTEL Digital Image Processing Week 8 Assignment Answers 2024

1. Laplacian operator can be used for which of the following operations?

a) Contrast Adjustment
b) Edge detection
c) Image Averaging
d) All of the above

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2. Which of the following is a first-order derivative operator?

a) Laplacian of Gaussian
b) Laplacian
c) Sobel
d) All of the above

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3.

image 54
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4.

image 55
Answer :- 

5. Which of the following is true for Laplacian filter?

a) Zero along ramp of constant slope.
b) Robust to noise.
c) Helps in finding appropriate location of edge.
d) Both a and c.

Answer :- 

6.

image 56
Answer :- 

7.

image 57
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8.

image 58
Answer :- 

9. Consider an 8-bit grayscale image with 256 possible gray levels (0 to 255). If a certain gray level
i’ in the image has a normalized CDF of 0.5, what is the corresponding equalized gray level?

a. 127
b. 128
c. 129
d. 130

Answer :- 

10. Which of the following is/are true for histogram of an image?

I. It represents the distribution of intensity values in an image.
II. It represents global appearance of an image.
III. Two different images may have same histogram.

a) Only I
b) Only I and II
c) Only I and III
d) All I, II and III

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