<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">A great many things a Sphere like!<div><br></div><div>The link below it just for 2D. There is an IJ article on 3D:</div><div><a href="http://www.insight-journal.org/browse/publication/698">http://www.insight-journal.org/browse/publication/698</a></div><div><br></div><div>I had (ITKv3) my own variant of this this 3D transform too, where I had a more general way to select candidate points for voting by simple passing a mask.</div><div><br></div><div>I have also wrote a Laplacian Blob detector to detect sphere like object, by analyzing the Eigen values of the hessian at the scale of the blob:</div><div><a href="https://github.com/blowekamp/itkScaleSpace/blob/master/include/itkMultiScaleLaplacianBlobDetectorImageFilter.h">https://github.com/blowekamp/itkScaleSpace/blob/master/include/itkMultiScaleLaplacianBlobDetectorImageFilter.h</a></div><div><br></div><div>Let me know if you need more information.</div><div><br></div><div>Brad</div><div><br><div><div>On Dec 18, 2013, at 8:48 AM, Casey Goodlett <<a href="mailto:casey.goodlett@kitware.com">casey.goodlett@kitware.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div><img src="https://mail.google.com/mail/u/0/images/cleardot.gif" alt="">David,<br><br></div>Have you tried Hough transforms? <br><br><a href="http://www.itk.org/Doxygen/html/classitk_1_1HoughTransform2DCirclesImageFilter.html" target="_blank">http://www.itk.org/Doxygen/html/classitk_1_1HoughTransform2DCirclesImageFilter.html</a><div class="gmail_extra">
<br>-- <br>Casey B. Goodlett, Ph.D.<br>R&D Engineer<br>Kitware, Inc. - North Carolina Office<br><a href="http://www.kitware.com/" target="_blank">http://www.kitware.com</a><br>
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