GTU Data Compression - June 2014 Exam Question Paper

GTU Information Technology (Semester 8)
Data Compression
June 2014

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) What is compression? Compare Lossy and Lossless compression.

7 M

1 (b) Differentiate modelling and coding.

7 M

2 (a) Explain LZ77 (sliding window) method with example.

7 M

2 (b) Write a short note: PNG

7 M

2 (c) Explain LZ78 method with example.

7 M

3 (a) Describe Shannon-Fano algorithm with illustrative example.

7 M

3 (b) Explain the Huffman algorithm with example.

7 M

3 (c) What is the height of Huffman tree? Explain it.

7 M

3 (d) Write a short note: facsimile compression

7 M

4 (a) What is JPEG? Explain it.

7 M

4 (b) Explain finite automata method of image compression.

7 M

4 (c) What is WSQ fingerprint compression? Explain it.

7 M

4 (d) Explain Fourier image compression in detail.

7 M

5 (a) What is DCT? Explain it.

7 M

5 (b) Write a short note: speech compression

7 M

5 (c) Explain ADPCM audio compression in detail.

7 M

5 (d) Write a short note: human auditory system.

7 M

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