Computer Vision
Assignment-5
1. Explain the following Chain code methods for boundary representation(a) 4-directional chain code
(b) 8-directional chain code
Differentiate Chain code.
2. Explain polygonal approximation algorithm. Explain signatures and bending energy.
Explain different boundary descriptors.
3. Consider a 4x4 chessboard binary image. What are the horizontal and vertical
projections?
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4. Explain different histogram features (at least 6).
5. What are different shape features which can be used to represent an object? Explain
briefly.
6. Let us assume that the 8 directional chain code of an object is given as7, 4, 4, 7, 1, 3, 2, 1, 2
What is the object perimeter? Explain different transform features.
7. Explain zero order, first order, second order spatial moments. Consider the following
image and find out the centroid using moments.
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8. Given the following 3x3 image. Find out the moments m(0,0), m(1,0), m(1,1), m(2,0) and
m(0,2).
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9. Explain different Haralick features. Differentiate between GLCM and GLDM.
10. Explain the feature selection techniques. Explain the feature reduction approaches.