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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 8 of 11

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Q71.
Which of the following operations are used for masking?

a.

AND, OR

b.

AND, NOT

c.

NOT, OR

d.

All of the mentioned

Discuss
Answer: (c).NOT, OR
Q72.
Two images having one pixel gray value 01010100 and 00000101 at the same location, are operated against AND operator. What would be the resultant pixel gray value at that location in the enhanced image?

a.

10100100

b.

11111011

c.

00000100

d.

01010101

Discuss
Answer: (c).00000100
Q73.
Which of the following arithmetic operator is primarily used as a masking operator in enhancement?

a.

Addition

b.

Subtraction

c.

Multiplication

d.

Division

Discuss
Answer: (c).Multiplication
Q74.
Which of the following is/are more commercially successful image enhancement method in mask mode radiography, an area under medical imaging?

a.

Addition

b.

Subtraction

c.

Multiplication

d.

Division

Discuss
Answer: (b).Subtraction
Q75.
The subtraction operation results in areas that appear as dark shades of gray. Why?

a.

Because the difference in such areas is little, that yields low value

b.

Because the difference in such areas is high, that yields low value

c.

Because the difference in such areas is high, that yields high value

d.

None of the mentioned

Discuss
Answer: (a).Because the difference in such areas is little, that yields low value
Q76.
If the images are displayed using 8-bits, then, what is the range of the value of an image if the image is a result of subtraction operation?

a.

0 to 255

b.

0 to 511

c.

-255 to 0

d.

None of the mentioned

Discuss
Answer: (d).None of the mentioned
Q77.
The subtracted image needs to be scaled, if 8-bit channel is used to display the subtracted images. So, the method of adding 255 to each pixel and then dividing by 2, has certain limits. What is/are those limits?

a.

Very complex method

b.

Very difficult to implement

c.

The truncation inherent in division by 2 causes loss in accuracy

d.

All of the mentioned

Discuss
Answer: (c).The truncation inherent in division by 2 causes loss in accuracy
Q78.
Which of the following is/are the fundamental factors that need tight control for difference based inspection work?

a.

Proper registration

b.

Controlled illum ination

c.

Noise levels should be low enough so that the variation due to noise won’t affect the difference value much

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q79.
When can two random variables be uncorrelated?

a.

Their covariance is 0

b.

Their covariance is 1

c.

Their covariance is -1

d.

None of the mentioned

Discuss
Answer: (a).Their covariance is 0
Q80.
In Image Averaging enhancement method assumptions are made for a noisy image g(x, y). What is/are those?

a.

The noise is correlated at every pair of coordinate (x, y)

b.

The noise has average value 1 at every pair of coordinate (x, y)

c.

All of the mentioned

d.

None of the mentioned

Discuss
Answer: (d).None of the mentioned
Page 8 of 11

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