Hi Kris, Today I finally got a chance to look at your denoising work (I'm ashamed that I was at Penn for with Suyash for some time but I never asked him about it). Anyway, I have a couple questions and I was hoping you could help me try to run your denoising work on some of my MRI. I took the test that you wrote and modified it only so that I could use it as a stand-alone program. I also verified that my version worked with the test images. However, when I tried to use it on my image (stats below)
Image information Size: [256, 256, 20] Origin: [-232.879, -135.656, 240.706] SpatialExtent: [498.047, 498.047, 190] Center: [16.1448, 113.368, 335.706] Spacing: [1.95312, 1.95312, 10] Index: [0, 0, 0] Direction: 1 0 0 0 1 0 0 0 1 using the following parameters patchRadius = 4 noiseModel = gaussian fidelityWeight = 0.0 numberOfIterations = 1 sigmaMultiplicationFactor = 2 it gave me the following error Line: 634 Description: itk::ERROR: PatchBasedDenoisingImageFilter(0x7fbffb0f5e10): Center pixel's weight (0) must be equal to 1.0 After investigating this section of the code, I noticed that the physicalWeightsImage (after writing it to an image file) consists of what looked like a weighted 2-D disc. Based on my reading of the comments, should this be more of a 3-D weighted sphere? If so, I made some changes in the code to actually get a weighted sphere thinking that might be solve the problem but I still got the same error. However, if I increase the radius to 8, it seems to get past that error without issue. Is there a general rule for determining a minimal radius for this filter? Thanks for your help, Nick _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Kitware offers ITK Training Courses, for more information visit: http://kitware.com/products/protraining.php Please keep messages on-topic and check the ITK FAQ at: http://www.itk.org/Wiki/ITK_FAQ Follow this link to subscribe/unsubscribe: http://www.itk.org/mailman/listinfo/insight-developers
