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Good morning Guys,<br><br>this is my question:<br><br>I have a dataset, and a projection matrix resulting from a calibration process. now:<br><br>the projection matrix P = 3x4 matrix. While transformation in VTK are 4x4 matrices.<br>So, I transformed my P in a 4x4 by inserting a NULL row inbetween the 2nd and the 3rd row. this makes the Z null.<br><br>Now If I put this final P into a vtkTransform object and apply to my polydata, are the coordinates in the politdata divided automatically by that famous homogeneous coordinate factor W?<br><br>let's say that PD is my PolyData and I want to visualized the 2D by multiply P * PD where of course I get coordinate like (Xi,Yi, 0, Wi). But now I would like Xi/Wi which is a homogeneous normalization.... is it that automatic or I have to make it expiciltly?<br><br>Very kind regards.<br>Giancarlo <br> <br /><hr />La tua privacy č al sicuro con Internet Explorer 8. <a href='http://www.microsoft.com/italy/windows/internet-explorer/features/browse-privately.aspx?tabid=2&catid=1' target='_new'>Scopri di pių</a></body>
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