AISAT/Form/QPM7/F10

QUESTION BANK

EC 370: Digital Image Processing

Module 1
Sl.
Question Marks CO BL
No.
1 Distinguish between a raster and a vector image. 3 CO1 L2

Define what is “Weber ratio” and discuss what is meant by brightness L1

2 3 CO1
adaptation in human visual system.

3 What is brightness discrimination? 3 CO1 L1

Give the practical limitations in sampling and reconstruction of L3

4 3 CO1
images.

5 Discuss about image file formats CO1 L2

Define 2-D Sampling theorem and discuss what is meant by fold over L1
6 CO1
frequencies

7 Differentiate between Vidicon and Digital Camera CO1 L2

8 Explain Differentiate between brightness and contrast CO1

9 Mach band effect. CO1

Explain the following relationship between pixels. (a) Adjacency (b)

10 CO1
Connectivity

11 Explain simultaneous contrast. CO1

12 How a digital image is represented? CO1

13 What are called 4-neighbors of a pixel? CO1

14 What are diagonal neighbours of a pixel? CO1

15 Define 4-connectivity. CO1

16 Define 8-connectivity CO1

17 Define m-connectivity. CO1

Explain types of images (Binary images, Grayscale images,

18 Colour images, Volume images, Range images and multispectral 12 CO1
images)
19 Explain about human visual system. (Not in syllabus). 12 CO1

Explain the function of an image processing system.

20 12 CO1
(Acquisition, Enhancement, restoration, Segmentation, . . .)
21 State and prove Sampling theorem for images (2D signals). 12 CO1

Academic year: Page 1 of 8

 AISAT/Form/QPM7/F10
QUESTION BANK

EC 370: Digital Image Processing

With neat diagram, explain the elements of an image processing

22 system. (Image acquisition element, Image Storage Mechanism, 12 CO1
Image Display)

Explain the function of an image processing system.

23 12 CO1
(Acquisition, Enhancement, restoration, Segmentation, . . .)
24 Explain different types of image file format 12 CO1

25 Explain different Colour models. 12 CO1

Module 2
Sl.
Question Marks CO BL
No.
1 Give the names of image transforms 3 CO2

2 What is the need for image transforms? 3 CO2

3 Give the expression for Walsh transform of a 2D signal. 3 CO2

Give the expression for Discrete Cosine transform of a 2D

4 3 CO2
signal.

5 Explain row and column ordering of matrices. 3 CO2

6 State and prove the properties of 2D DFT 5 CO2

Find the kernel/basis of DFT, Walsh, Hadamard, Haar, Slant

7 Transforms, DCT and how to find out 2D DFT using that 5 CO2
kernel?

Why KL transform is called signal dependent transform? What

8 5 CO2
are its advantages and disadvantages?

9 How Singular value Decomposition is done on images? 5 CO2

10 How is image compression possible using SVD? Explain. 5 CO2

11 What are Toeplitz, circulant and block matrices? 5 CO2

12 With examples, give the classification of systems. 12 CO2

Module 3

Sl
No Question Marks CO BL

Why is image enhancement important? Give the main

1 classification of enhancement techniques (Spatial and frequency 3 CO3
domain).
2 Why image enhancement in frequency domain is required? 3 CO3

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 AISAT/Form/QPM7/F10
QUESTION BANK

EC 370: Digital Image Processing

Give the arithmetic operations used in images (Addition,

3 3 CO3
subtraction, multiplication, etc.).

Give and classify the image enhancement techniques spatial

4 5 CO3
domain (Point, Mask and Global).

What are the different types of point operation in image

5 5 CO3
enhancement?

What is histogram? Why histogram equalization is used in

6 5 CO3
image enhancement?
7 Explain the concept of spatial filtering with an example 5 CO3

8 What are the drawbacks of averaging filter? 5 CO3

What is the advantage of Median filter over Mean (Average)

9 5 CO3
filter?

Explain about spatial domain high pass filtering or image

10 5 CO3
sharpening

What do you mean by bit plane slicing concept used in image

11 5 CO3
enhancement?

With block diagram, explain homomorphic filtering used in

12 5 CO3
image enhancement

Explain different types of point operation in image

13 12 CO3
enhancement?

Explain the types of linear and non-linear gray-level

14 12 CO3
transformations

Explain the types of spatial filters used (Mean, Median, Barlett,

15 12 CO3
Gaussian . . .).

With neat sketches, explain about different types of filters used

16 12 CO3
in image enhancement in frequency domain
Module 4

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QUESTION BANK

EC 370: Digital Image Processing

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Module 5

Write the main classification of image segmentation techniques

1 3 CO5
(global and local).

What are the 2 approaches that lead to the classification of

2 image segmentation techniques – Region based segmentation 3 CO5
and Edge based segmentation

3 What are the classifications of edges in images? 3 CO5

4 Explain about Region based Segmentation and types 5 CO5

5 What do you mean by clustering? Explain the types. 5 CO5

6 Give the details of any edge detection operator. 5 CO5

7 Explain about canny edge detector 5 CO5

8 What are the categories of edge linking? 5 CO5

9 What is Hough transform? 5 CO5

Explain about the active contour method for edge linking

10 5 CO5
(Greedy algorithm).

11 Explain about Region based Segmentation and types. 12 CO5

What do you mean by clustering? How K-means clustering is

12 12 CO5
done? Explain it using an example

Explain the image segmentation based on thresholding and its

13 12 CO5
types.

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QUESTION BANK

EC 370: Digital Image Processing

14 Explain different edge detection operators used. 12 CO5

15 Explain about Hough transform. 12 CO5

Module 6

1 What is the need for compression? 3 CO6

2 What is the limitation of Huffman coding? 3 CO6

What is the concept of Dictionary based technique for image

3 3 CO6
compression?

4 What are steps involved in JPEG image compression standard. 3 CO6

5 Explain the types of redundancies present in images. 5 CO6

6 Give the main classification of image compression schemes. 5 CO6

7 With an example explain run-length coding. 5 CO6

8 Write the steps to perform Huffman coding, arithmetic coding 5 CO6

Give the classification of Dictionary based technique for image

9 5 CO6
compression

With a block diagram, explain the concept of Transform based

10 5 CO6
image compression

11 Which transform is the best for image compression? Explain 5 CO6

12 Explain about vector quantization. 5 CO6

13 Which transform is used in JPEG 2000? Explain JPEG 2000. 5 CO6

14 Explain JPEG standard 12 CO6

15 Explain MPEG standard. MPEG 1, 2, 4 and 7. 12 CO6

16 Explain wavelet based image compression 12 CO6

Academic year: Page 5 of 8

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QUESTION BANK

EC 370: Digital Image Processing

Academic year: Page 6 of 8

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QUESTION BANK

EC 370: Digital Image Processing

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 AISAT/Form/QPM7/F10
QUESTION BANK

EC 370: Digital Image Processing

Academic year: Page 8 of 8