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Posted Date: 26 Dec 2007 Posted By: India Member Level: Diamond
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2006 Jawaharlal Nehru Technological University B.Tech ECM IV Year I Sem (NR410507) -Sup.Nov '06 - Digital Speech & Image Processing Question paper
Code No: NR410507 NR
IV B.Tech I Semester Supplementary Examinations, November 2006
DIGITAL SPEECH & IMAGE PROCESSING
( Common to Computer Science & Engineering and Electronics &
Computer Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) Explain in detail about different colour co-ordinate systems.
(b) Describe the chromaticity diagram. [8+8]
2. (a) Explain the log and inverse log transformations. For what kind of image
enhancement, these transformations are suitable.
(b) Describe the general form of power-law transformation function. What are its
application. [10+6]
3. Discuss the role of different convolution windows (filters) in the image enhancement.[16]
4. Explain various discontinuity detection methods in detail with suitable examples.[16]
5. A binary image contains straight lines oriented horizontally, vertically, at 450 and
at -450. Give a set of 3X3 masks that can be used to detect 1-pixel-long breaks in
these lines. [16]
6. (a) With necessary diagrams explain the operation of opening.
(b) Let A and B are two sets in Z2 . Show that
A_B = \(A)-b
b 2 B
[8+8]
7. (a) What do you mean by compression? Briefly explain its requirement.
(b) Differentiate lossy compression and lossless compression. Mention their applications.
(c) What do you mean by improved Gray Scale Quantization?
(d) Explain the fidelity criteria in image compression. [3+5+4+4]
8. (a) Explain about
i. slope overload
ii. granular noise.
(b) List out the advantages and drawbacks of different types of lossy compression
techniques. [8+8]
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