<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1519985171817_113013"><span>Dear All,</span></div><div id="yui_3_16_0_ym19_1_1519985171817_113030"><span><br></span></div><div id="yui_3_16_0_ym19_1_1519985171817_113047">I have a 3D object which is located in an arbitrary position
and orientation in the space. My goal is to roughly find the orientation of the
object. <br></div><div id="yui_3_16_0_ym19_1_1519985171817_113061"><br></div>
<div id="yui_3_16_0_ym19_1_1519985171817_113048">To achieve that, I think I need a descriptor of the object to
define it. For that descriptor I am thinking maybe a skeleton of the object will
work, since my object’s shape is a specific shape with certain twists and
corners.</div><div id="yui_3_16_0_ym19_1_1519985171817_113069"><br></div>
<div id="yui_3_16_0_ym19_1_1519985171817_113049">After having the descriptor I need to be able to find the
orientation of the descriptor. And for this I am thinking I might be able to
use certain relationships of points located on the skeleton, with each other or
with the origin of the space.</div><div id="yui_3_16_0_ym19_1_1519985171817_113078"><br></div>
<div id="yui_3_16_0_ym19_1_1519985171817_113050">So my questions are:</div><div id="yui_3_16_0_ym19_1_1519985171817_113079"><br></div>
<div id="yui_3_16_0_ym19_1_1519985171817_113051">1. Is there a better method to do this? (Finding the
orientation of an object)</div><div id="yui_3_16_0_ym19_1_1519985171817_113080"><br></div>
<div id="yui_3_16_0_ym19_1_1519985171817_113052">2. Is there a method in VTK/ITK to extract the skeleton of
an object?</div><div id="yui_3_16_0_ym19_1_1519985171817_113081"><br></div>
<div id="yui_3_16_0_ym19_1_1519985171817_113053">3. Is there any other descriptor available in VTK/ITK which
might be helpful?</div>
<div id="yui_3_16_0_ym19_1_1519985171817_113012"> </div><div class="signature" id="yui_3_16_0_ym19_1_1519985171817_113011">Thanks.<br></div></div></body></html>