Name of the Organisation : National Institute of Electronics & Information Technology
Examination : C Level Course
Document Type : Sample Question Paper
Year : 2017
Name of the Subject : Digital Image Processing and Computer Vision
Website : http://beta.nielit.gov.in/content/january-2017
Download Sample Question Paper : https://www.pdfquestion.in/uploads/13069-Digitalimage.pdf
Digital Image Processing and Computer Vision Paper :
Note :
1. Answer question 1 and any FOUR from questions 2 to 7.
2. Parts of the same question should be answered together and in the same sequence.
Related : NIELIT A Level Course Examination Question Paper 2017 : www.pdfquestion.in/13066.html
Time: 3 Hours
Total Marks: 100
1. a) Mention the difference between Monochrome and grayscale image.
b) What do you mean by Digitization of Image?
c) Discuss L2W scheme.
d) Define 4-adjacent, 8-adjacent with example.
e) Write the importance of Edge detection.
f) List any two properties of median filter.
g) What do you mean by Gaussian Noise?
2. a) Apply contrast stretching technique on 3 bit gray level image of size 4 x 4.
b) Explain High Boost filter and its usage. (9+9)
3. a) Describe histogram equalization. Obtain Histogram equalization for the following image segment of size 5*5? Write the inference on image segment before and after equalization.
b) Give names & functioning of various image sensing and acquisition devices.
c) Explain the LOG and DOG filters and its application areas. (9+5+4)
4. a) Explain 1D Discrete Cosine Transform (DCT) and its usage in DIP.
b) With the help of block diagram explain Pseudo color Image Processing. (9+9)
5. a) What are wavelet functions? Explain 2D-Haar wavelet transform.
b) List the techniques for detecting gray level discontinuities in digital image.
c) Explain Chain Coding and its usage. (8+6+4)
6. a) What is the need of error free compression? List the various coding techniques to achieve this.
b) How an image is compressed using JPEG image compression standard? (10+8)
7. Write short notes on (any three):
a) Object Recognition
b) Motion estimation
c) Image Segmentation
d) Hole filling (6+6+6)
A9-R4: Data Communication & Network Technologies :
1. Each question below gives a multiple choice of answers.
Choose the most appropriate one and enter in the “OMR” answer sheet supplied with the question paper, following instructions therein. (1×10)
1.1 The ________ protocol family was developed by the IEEE for covering wireless networking.
A) IEEE-802.3
B) IEEE-802.5
C) Hiper LAN/2
D) IEEE-802.11
1.2 ________ permits data transfer in both direction, but the data will flow in one direction at a time. It requires only one transmission channel, but the channel must be bidirectional.
A) Simplex
B) Half Duplex
C) Full Duplex
D) All of the above
1.3 In which routing method do all the routers have a common database?
A) Distance vector
B) Link state
C) Dijkstra method
D) None of the above
1.4 Sliding window is a technique for ________.
A) line discipline
B) error control
C) flow contrnmol
D) session management
1.5 The data link layer takes the packets from ________ ad encapsulates them into frames for transmission.
A) network layer
B) physical layer
C) transport layer
D) application layer
1.6 CRC stands for
A) cyclic redundancy check
B) code repeat check
C) code redundancy check
D) cyclic repeat check
1.7 Which of the following signal can be used for short-range communication in a closed area using line-of-sight propagation?
A) Infrared
B) Bluetooth
C) Radio
D) Microwave
1.8 The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called
A) piggybacking
B) cycle redundancy check
C) flether’s checksum
D) none of the above
1.9 Frame relay technique uses ________.
A) Circuit switching
B) Message switching
C) Packet switching
D) Hybrid switching
1.10 Decryption and encryption of data are the responsibility of which of the following layer?
A) Physical layer
B) Data Link layer
C) Presentation layer
D) None of the above
2. Each statement below is either TRUE or FALSE.
Choose the most appropriate one and enter your choice in the “OMR” answer sheet supplied with the question paper, following instructions therein. (1×10)
2.1 The highest capacity wireless media is satellite microwave.
2.2 It is the network layer’s responsibility to forward packets reliably from the source to the destination.
2.3 A router decides on a route for an IP packet based on its source and destination address.
2.4 HTML is a protocol to describe web content.
2.5 RSA is a public key cryptographic algorithm. In case one loses the private key, it is possible to reconstruct it from the public key.
2.6 Trojan house is a program that performs not only a desired task but also includes unexpected malicious functions.
2.7 The standard protocol of the Internet is Ethernet.
2.8 Media Access Control is a function of the datalink layer.
2.9 Sequence numbers are necessary to tolerate losses, but are not needed to tolerate bit errors alone.
2.10 Every router implements the transport layer.