<div dir="ltr">Hi Atul,<div><br></div><div>I'm glad to hear that you were successful. The pre-multiply versus post-multiply in vtkTransform is tricky.</div><div><br></div><div> - David<br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Aug 10, 2015 at 8:57 AM, Atul <span dir="ltr"><<a href="mailto:sharmaatul11@gmail.com" target="_blank">sharmaatul11@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div>Thank you so much David. As you suggested in this email, I had already followed them in my code. There were some error in code besides one obvious error which was multiplication of tooltipcalibration matrix (we need to post-multiply the tooltipcalibration matrix to the tooltransform matrix, I was pre-multiplying it). I corrected all of them and now the system is working as with EM tracker. <br></div>Your help played a great role in making this system. Our team appreciate your help a lot.<br><br></div>Regards,<br></div>Atul<br></div><div class="gmail_extra"><br><div class="gmail_quote"><span class="">On Mon, Aug 10, 2015 at 11:52 AM, David Gobbi [via VTK] <span dir="ltr"><<a href="http:///user/SendEmail.jtp?type=node&node=5733387&i=0" rel="nofollow" link="external" target="_blank">[hidden email]</a>></span> wrote:<br></span><blockquote style="border-left:2px solid #cccccc;padding:0 1em" class="gmail_quote">
<div dir="ltr"><span class=""><span>Hi Atul,<div><br></div><div>The behaviour of the systems should be very similar, the only real difference is the frame of reference. I.e. the frame of reference for the FOB tool will be different from the frame of reference for the Polaris tool, and the frame of reference for the FOB transmitter will be different from the frame of reference for the Polaris camera. Moving from one system to the other, you have to re-calibrate.</div><div><br></div></span></span><div> - David <span class=""><span><br><div class="gmail_extra"><br></div></span></span></div></div></blockquote></div></div></blockquote></div><br></div></div></div>