Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
BE SEMESTER-VI EXAMINATION WINTER 2018
Subject Code:2161604 Date:04/12/2018
Subject Name:Image processing
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks
Q-1 Define the following terms
Contrast Strecthing
Nearest neighbor interpolation
Image negative
3
What is mean by Digital Image Processing? Explain how digital images can be
represented?
4
Explain the process of image acquisition. 7
Q-2 Discuss a simple image formation model. 3
Write short note on :smoothing filter 4
explain following:
1)mach band effect 2)image contrast, image resolution
7
OR
Explain piecewise-linear transformation functions in detail 7
Q-3 List applications of RGB, HIS and CMYK color Models 3
Explain ideal low pass filter and butterworth low pass filter in frequency domain. 4
Explain sharpening using a 3x3 mask. 7
OR
Q-3 Write a short note on Power-Law (Gamma) transformation 3
Explain the Error-free compression techniques in short. 4
Define histogram.explain histogram equalization algorithm.write pseudo code
or
matlab code for calculation of histogram and histogram equalization.
7
Q-4 Explain the properties of Haar transform. 3
Explain thresholding concept of Image segmentation in details. 4
Explain RGB color model. Mention safe RGB colors and its detail. 7
OR
Q-4 Explain Adaptive filters 3
Explain DCT with their applications in image processing field. 4
Explain the following image restoration technique.
1. Salt Noise Papper Noise Uniform Noise
7
Q-5 Write note on edge detection 3
What is morphology? Explain any one morphology operation in details. 4
Write a detailed note on 2-D fast wavelet transform 7
OR
Q-5 Discuss Spatial and Temporal Redundancy of an Image. 3
Explain LZW Coding in brief. 4
What is Segmentation? List segmentation approaches. Explain use of gradient
operators to find out discontinuous.
7