Download GTU B.Tech 2020 Winter 7th Sem 2173210 Digital Image Processing Question Paper

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Subject Code: 2173210

GUJARAT TECHNOLOGICAL UNIVERSITY

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BE- SEMESTER-VII (NEW) EXAMINATION - WINTER 2020

Subject Name: Digital Image Processing

Time: 10:30 AM TO 12:30 PM

Instructions:

1. Attempt any FOUR questions out of EIGHT questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1

1. (a) Explain basic concepts of Image sampling and quantization. (03)
2. (b) Compare lossy and lossless image compression. (04)

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3. (c) Draw and explain structure of human eye and discuss human vision System. (07)

Q.2

1. (a) List the types of noise and their cause, which can corrupt an image. (03)
2. (b) Write a short note: Smoothing filter in frequency domain. (04)
3. (c) Explain Color Models. (07)

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Q.3

1. (a) Explain block diagram of Image processing. (03)
2. (b) Explain Huffman coding with example. (04)
3. (c) Explain Homomorphic filtering. (07)

Q.4

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1. (a) Write a short note: Smoothing filter in frequency domain. (03)
2. (b) What is Contrast stretching? Explain in Short. (04)
3. (c) Write a Short note on Thresholding. (07)

Q.5

1. (a) Write a short note on Pseudo-coloring. (03)

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2. (b) Explain region growing by pixel aggregation method. (04)
3. (c) Explain various methods for detecting edge in an image. (07)

Q.6

1. (a) Explain difference between-Image Enhancement and Restoration. (03)
2. (b) Explain different Digital image file formats. (04)

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3. (c) Write a short note on Color Segmentation. (07)

Q.7

1. (a) Explain basic steps for filtering of image in frequency domain. What are the filter mask used for low pass filtering and high pass filtering? (03)
2. (b) Explain Contra-harmonic mean filter. (04)
3. (c) What is Histogram? Explain histogram equalization algorithm. Write Matlab code for calculation of histogram and histogram equalization. (07)

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Q.8

1. (a) Explain applications of Image processing. (03)
2. (b) Explain Edge linking algorithms. (04)
3. (c) Briefly explain JPEG image compression (Encoder and Decoder). Explain each stage of JPEG compression. (07)

Date: 30/01/2021

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Total Marks: 56

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