Image Processing Reference
In-Depth Information
7. What is the overhead of computing normals at boundary points of 2-
D objects using MAT? What is its advantage compared to regression-
based analytical techniques? Modify the algorithm of the computation
of normal using MAT so that all the operations are performed using
integer arithmetics only.
8. Design an algorithm for contour-following and boundary-curve segmen-
tation using the similar concept of normal computation at boundary
points using the MAT in 2-D.
9. Write a program for computing the intersection of a plane and a digital
sphere of radius R for the octagonal distance {113}. Compute the area
of intersection.
10. Out of the set of octagonal distances in 3-D with the length of period
of the neighborhood sequence being less than 4, which distance function
should be used to compute the cross-section of a 3-D object using MAT?
Justify.
11. Design a parallel volume-rendering algorithm in a suitable computing
environment using the MAT representation of an object.
12. The volume-rendering algorithm using MAT presented in this text does
not use explicit computation of surface normals at boundary points.
Design an algorithm that computes surface normals at points of the
boundary surface of a 3-D object from its MAT. Hints: Extend the 2-D
algorithm of computation of normals at boundary points using MAT.
