Dear Weber,<br><br>1. I've implemented the Gaussian Filter <br> itkGPURecursiveGaussianImageFilter and itkGPUSmoothingRecursiveGaussianImageFilter <br> in my paper <a href="http://hdl.handle.net/10380/3393">http://hdl.handle.net/10380/3393</a> have a look to the article.<br>
2. Yes, the memory could be copied only once from CPU->GPU and used by the multiple kernels via pointers, use itkGPUDataManager for that.<br><br>Regards,<br>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black" lang="EN-US"><br></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black" lang="EN-US">-Denis Shamonin, MSc</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black" lang="EN-US">Division of Image Processing (LKEB)</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black" lang="EN-US">Department of Radiology</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black" lang="EN-US">Leiden University Medical Center</span></p><br><div class="gmail_quote">On Wed, Feb 20, 2013 at 12:02 AM, Joachim Weber <span dir="ltr"><<a href="mailto:joachim.weber@stud.hs-regensburg.de" target="_blank">joachim.weber@stud.hs-regensburg.de</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
i want to write a Gaussian Filter with ITK-GPU. I have a 3D image, which has to be filtered in all 3 directions(first Z, then X and then Y).<br>
Because ITK encapsulates the whole OpenCL functionality inside its on methods and classes, I find it very hard to define memory objects for multiple kernels.<br>
It don't want to copy the image between Host and Device the whole time, which would result in a heavy performance drawback.<br>
Is there a simple way to define OpenCL memory objects, which can be used by multiple kernels?<br>
I am not to much into ITK GPU, but it looks like, defining memory buffers for multiple kernels(which stay on Device) is not possible right now.<br>
Or do all kernels run in the same context?<br>
<br>
<br>
Many thanks in advance,<br>
Weber Joachim<br>
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