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2003 Course Digital Image Processing

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Total No. of Questions : 12] P993 [Total No. of Pages : 3 [3664]-207 B.E. (E & TC) DIGITAL IMAGE PROCESSING (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answers to the two sections should be written in separate books. 2) Neat diagrams must be drawn wherever necessary. 3) Assume suitable data, if necessary. SECTION - I Q1) a) Briefly explain the following : i) ii) [8] Webber ratio. Scotopic threshold and glare limit. b) 100 100 B bits/pixel image is processed as follows : [8] Case 1 - Down-sampled by factor of 2. Case 2 - Quantized to (B-1) bits/pixel. Find effect on resolution, quality, image size and data size in each case. OR Q2) a) Explain the following : i) ii) b) i) ii) [8] Simultaneous contrast. MTF of human vision system. A gray level transform is given by T (f) = af + b where f is the original gray level. What are the transform coefficients (a & b) if we are inverting image. An 8 bit image has mean value of 100 and standard deviation of 10. What can you say about quality of the contrast in image. If the image is passed through gray level transform 9 (x, y) = 2f (x, y) + 10. What is the mean value and standard deviation of the transformed image. [8] Q3) a) Explain properties of Haar Transform. Give its applications. b) Discuss RGB, YIQ and HSI color models. [8] [8] P.T.O.

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