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<body class='hmmessage'><div style="text-align: left;">Hi,<br><br>I'm just wondering about the coordinate system of the confidence connected algorithm. I'm using a vtkPointWidget to select a seed point, and according to the point widget, my XY coordinates range from about -45,413 (top-left) to 413,-45 (bottom-right).... and also a z coordinate which I've got as 7.5 (middle slice).<br><br>Now, when I plug that into the confidence connected SetSeed() method, I don't think the two coordinate systems are matching up because my results are a bit strange. <br><br><br>The following picture is an image of two legs, and you can see the vtkPointWidget being positioned in the center of the femur.<br><br>http://img382.imageshack.us/img382/2118/dicomimgaw7.jpg<br><br>This is the result of a multiplier of 0.1, followed by a multiplier of 2.<br><br>http://img397.imageshack.us/img397/9743/outputvtk01multiplierwd7.jpg<br>http://img383.imageshack.us/img383/6727/outputvtk2multiplierfs6.jpg<br><br>(Note: I think these may be a bit pixely due to the compression on imageshack, but the actual ones are just 2 solid colours)<br><br><br>What I conclude from that is that the blue area is in fact the area that has been seeded, not the red area. Therefore that is why I believe that I have some sort of problem with the coordinates not matching. What do I have to do to make sure the point widget and the SetSeed() method both match up??<br><br>And I also don't know why there are 2 colours in the vtk file, when one should obviously be transparent. Is that one easy to answer?<br><br><br>Thanks for any help,<br>Cameron.<br></div><br><div></div><br><br /><hr />Grab it. <a href='http://mycareer.com.au/?s_cid=596065 ' target='_new'>You dream job is up for grabs.</a></body>
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