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Posted By: neyha Member Level: Diamond Posted Date: 12 Jun 2008
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2007 Anna University Electronics and Communication B.E / B.Tech. DEGREE EXAMINATION:DIGITAL IMAGE PROCESSING Question paper
B.E / B.Tech. DEGREE EXAMINATION,NOV/DEC 2007
DIGITAL IMAGE PROCESSING
VII SEMESTER
Time : 3 Hrs
Max Marks : 100
PART A (10 X 2 = 20 )
1. What are the applications of digital image processing?
2. Define Haar transform.
3. What is image averaging?
4. Define contrast ratio and inverse contrast ratio.
5. What is speckle noise?
6. What is pseudo inverse?
7. Mention the limitations of bit- plane encoding.
8. Define optimum transform coder
9. What is the use of fourier descriptors?
10. What is textures?
PART - B ( 5 X 16 = 80)
11 (a) Describe the four transform and discrete Fourier transform and discuss the properties of Fourier transform
OR
(b) Explain the following separatable image transforms:
(i) Hadamard transform
(ii) DCT
(ii) Karhunen- Loeve transform
12 (a) Describe the spatial domain methods for image enhancements
OR
(b) Describe the following filters:
(i) Laplacian filters
(i) Sharpening filters
13 (a) Wiht aid of block diagram , describe the digital image restoration system and explain the image observation models
OR
(b) (i) Explain the constrained least mean square filtering
(ii) Discuss the blind image restoration
14 (a) Explain the following lossless compression condings:
(i) LZW coding
(ii) Predictive coding
OR
(b) (i) Explain the lossy compression wavelet coding
(ii) Discuss the image compression standards.
15 (a) (i) Describe edge detection
(ii) Explain the boundary representation of onject and chain codes
OR
(b) Explain the following descriptors:
(i) Regional descriptors
(ii0 Simple descriptors
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