Images - systems research group, Computer Graphics

Assignment Help:

The image you have been given for contour extraction is shown in Figure 1. The method for constructing the search space is shown in Figure 2. It is generated from two initial discrete contours (shown in red). (The example shown here has N = 4 points on each contour for clarity, but the example you are given has many more points.) The search space is formed by joining the corresponding points on the two red contours with lines (shown in green). These green lines are then subdivided equally into M points to provide a discrete M  N search space, of which there are MN possible contours. The aim of the algorithm is to nd the contour which has points of highest intensity along it and is smooth. The constraints are that each line must pass through one green point per line and it cannot move back on itself. An example of an optimal contour in this case is shown in brown and an example of a non-optimal contour is shown in yellow. The problem with such a technique is that the large size of the search space demands a high computational overhead. However, the local connectivity of the contour energy function can be exploited, reducing the computation from exponential to polynomial time. The method of Dynamic Programming (Bellman, 1957) will be employed, which is based around the principle of optimality. The principle states (Sonka et al., 1993): Whatever the path to a node X, there exists an optimal path between X and the end point. In other words if the optimal path (start point to end point) goes through X then both its parts start point to X and X to end are also optimal.


Related Discussions:- Images - systems research group

3d graphics, Define hermite interpolation in deatail description with examp...

Define hermite interpolation in deatail description with example?

Explain difference between impact and non-impact printers, What is the diff...

What is the difference between impact and non-impact printers?  Impact printer press produced character faces against an inked ribbon on to the paper. A line printer and dot-ma

Chain of responsibility and the iterator patterns, QUESTION (a) Conside...

QUESTION (a) Consider the observer, façade, chain of responsibility and the iterator patterns. i) Give detailed descriptions and draw their structures. ii) Explain the in

Applications for computer animation, Applications For Computer Animation ...

Applications For Computer Animation These days, animation influences approximately every aspect of life right from entertainment to education and to security and lots of more a

Mathematical description of oblique projection onto xy-plane, Mathematical ...

Mathematical description of an Oblique projection onto xy-plane  In order to expand the transformation for the oblique projection, identify the Figure. This figure explains a

Softwares and hardwares for computer animation, Softwares and Hardwares for...

Softwares and Hardwares for Computer Animation The categories of both software as well as hardware needed to work on animation are now to be discussed. Computer animation can b

Explain briefly ancillary operations, Problem: a. Explain briefly six A...

Problem: a. Explain briefly six Ancillary Operations? b. When do ancillary operations take place? c. (i) What is flexography? (ii) Provide examples of finished produ

Derive the common transformation of parallel projection, Derive the common ...

Derive the common transformation of parallel projection into the xy-plane in the direction of projection d=aI+bJ+cK. Solution: The common transformation of parallel projection

Explain the acoustic properties of sound, Problem: (a) What is meant b...

Problem: (a) What is meant by ‘Time - Stretching ‘in relation to a sound data file? (b) Calculate the size of a 5 minutes mono sound file of CD quality and with a 16 -bit

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd