DOEACC Society 2006 DOEACC C Level CE5 - Image Processing

CE5-R3: IMAGE PROCESSING AND COMPUTER VISION
NOTE:
Time: three Hours Total Marks: 100
1.
a) discuss spatial and Gray Level resolution
b) define Canny edge dectector and how it is used.
c) describe 2D-DFT and how that it can be calculated using calculation which of 1D-DFT.
d) How can we use Hough transform for detecting circles in an image?
e) define how depth is estimated using stereovision.
f) What is pyramidal processing?
g) discuss the principle of K-NN based trend classification.
(7x4)
2.
a) When a family of N-dimensional vectors form a complete orthnormal set? For 2D image
transforms,what is separablity property of 2D orthonormal basis functions? How does it help in
computing the transform?
b) define the subsequent operations:
i) Median Filtering;
ii) Lowpass Spatial Filtering.
(10+[4+4])
3.
a) define the process of Histogram equalization. What purpose does it serve?
b) discuss correspondence ranging from spatial and frequency domain filters by taking the example of
Low Pass Filter.
(8+10)
4.
a) Consider a linear filter whose impulse response is the 2nd derivative of the Gaussian Kernel
exp(-x2/2s2).Show that regardless of the value of s ,the response of this filter to an edge
modeled by step function is a signal whose zero-crossing is at the location of the edge.
b) explain how clustering can be used for image segmentation.
(10+8)
5.
a) discuss the HSV color model compare with RGB and CMY color model and also explain the
advantage and disadvantage.
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1. ans ques. one and any 4 ques. from two to 7.
2. Parts of the identical ques. should be answered together and in the identical
sequence.
b) Consider the issue of image blurring caused by uniform acceleration in the X direction .If the
image at rest at time t=0 and accelerates with uniform acceleration x0(t)=at/T for a Time T, obtain
the transfer function H(u,v).
(6+12)
CE5-R3 Page two of two January, 2006
6.
a) What do you understand by Camera Calibration?
b) discuss JPEG Coding technique. What level of compression it can offer?
c) Outline the statistical approach of the use of moments for texture description.
(6+6+6)
7. Write short notes on:
a) Segmentation of range images.
b) How shape can be found from shading.
c) Co-occurrence in describing textures.
(6+6+6)
CE5-R3 Page three of two January, 2006

Earning:   Approval pending.