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Welcome to the Image Enhancement MCQs Page

Dive deep into the fascinating world of Image Enhancement with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Image Enhancement, a crucial aspect of Digital Image Processing (DIP). In this section, you will encounter a diverse range of MCQs that cover various aspects of Image Enhancement, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Digital Image Processing (DIP).

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Check out the MCQs below to embark on an enriching journey through Image Enhancement. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Digital Image Processing (DIP).

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Image Enhancement. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Image Enhancement MCQs | Page 9 of 11

Explore more Topics under Digital Image Processing (DIP)

Q81.
The standard deviation โ€˜ฯƒโ€™ at any point in image averaging: ฯƒแธก(x, y) = 1/โˆšK ฯƒษณ(x, y), where แธก(x, y) is the average image formed by averaging K different noisy images and ษณ(x, y) is the noise added to an original image f(x, y). What is the relation between K and the variability of the pixel values at each location (x, y)?

a.

Increase in K, decreases the noise of pixel values

b.

Increase in K, increases the noise of pixel values

c.

Decrease in K, decreases the noise of pixel values

d.

Decrease in K, increases the noise of pixel values

Discuss
Answer: (a).Increase in K, decreases the noise of pixel values
Q82.
A filter is applied to an image whose response is independent of the direction of discontinuities in the image. The filter is/are ________

a.

Isotropic filters

b.

Box filters

c.

Median filter

d.

All of the mentioned

Discuss
Answer: (a).Isotropic filters
Q83.
In isotropic filtering, which of the following is/are the simplest isotropic derivative operator?

a.

Laplacian

b.

Gradient

c.

All of the mentioned

d.

None of the mentioned

Discuss
Answer: (a).Laplacian
Q84.
The Laplacian is which of the following operator?

a.

Nonlinear operator

b.

Order-Statistic operator

c.

Linear operator

d.

None of the mentioned

Discuss
Answer: (c).Linear operator
Q85.
The Laplacian โˆ‡^2 f=[f(x + 1, y) + f(x โ€“ 1, y) + f(x, y + 1) + f(x, y โ€“ 1) โ€“ 4f(x, y)], gives an isotropic result for rotations in increment by what degree?

a.

90 degree

b.

0 degree

c.

45 degree

d.

None of the mentioned

Discuss
Answer: (a).90 degree
Q86.
The Laplacian incorporated with diagonal directions, i.e. โˆ‡^2 f=[f(x + 1, y) + f(x โ€“ 1, y) + f(x, y + 1) + f(x, y โ€“ 1) โ€“ 8f(x, y)], gives an isotropic result for rotations in increment by what degree?

a.

90 degree

b.

0 degree

c.

45 degree

d.

None of the mentioned

Discuss
Answer: (a).90 degree
Q87.
Applying Laplacian has which of the following result(s)?

a.

Produces image having greyish edge lines

b.

Produces image having featureless background

c.

All of the mentioned

d.

None of the mentioned

Discuss
Answer: (c).All of the mentioned
Q88.
Applying Laplacian produces image having featureless background which is recovered maintaining the sharpness of Laplacian operation by either adding or subtracting it from the original image depending upon the Laplacian definition used. Which of the following is true based on above statement?

a.

If definition used has a negative center coefficient, then subtraction is done

b.

If definition used has a positive center coefficient, then subtraction is done

c.

If definition used has a negative center coefficient, then addition is done

d.

None of the mentioned

Discuss
Answer: (a).If definition used has a negative center coefficient, then subtraction is done
Q89.
A mask of size 3*3 is formed using Laplacian including diagonal neighbors that has central coefficient as 9. Then, what would be the central coefficient of same mask if it is made without diagonal neighbors?

a.

5

b.

-5

c.

8

d.

-8

Discuss
Answer: (a).5
Q90.
Which of the following mask(s) is/are used to sharpen images by subtracting a blurred version of original image from the original image itself?

a.

Unsharp mask

b.

High-boost filter

c.

All of the mentioned

d.

None of the mentioned

Discuss
Answer: (c).All of the mentioned
Page 9 of 11

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