Pattern_Theory/Chapter5.html

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In this chapter, you will need the following:<br>

<br>

- <span style="font-weight: bold;">In Exercise 8:</span> <br>
To create a Hippopotaffe and a Giramus, you first need
to find images of a giraffe and a hippopotamus. You can easily find
some on
the web. Here are examples of such images with
some chosen landmark points: a <a href="GlaunesCode-Lndmrk/giraffe2lmk2.jpg">giraffe</a>
and a <a href="GlaunesCode-Lndmrk/hippo2lmk2.jpg">hippopotamus</a>. <br>

The second step is to compute a geodesic between 2 sets of landmark
points (which can be manually selected thanks to the function <a href="GlaunesCode-Lndmrk/ginputs.m">ginputs.m</a>). One set of code, developped by <a href="http://www.mi.parisdescartes.fr/%7Eglaunes/index.html">Joan Alexis Glaun&egrave;s</a>, for doing this is available here: the file
<a href="GlaunesCode-Lndmrk/matchLandmarks.m">matchLandmarks.m</a>
defines a function which computes the geodesic
(calling the basic routine <a href="GlaunesCode-Lndmrk/conjgrad.m">conjgrad.m</a>).
When this is computed, the file
<a href="GlaunesCode-Lndmrk/flow.m">flow.m</a>
will compute the associated global flow of the plane. Finally, you will need the function <a href="GlaunesCode-Lndmrk/plotresults.m">plotresults.m</a> to plot the results.<br>
Here are two examples of the strange animals you will obtain: a <a href="GlaunesCode-Lndmrk/hippopotaffe2.jpg">Hippopotaffe</a> and a <a href="GlaunesCode-Lndmrk/giramus2.jpg">Giramus</a>.<br>

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