Hi, I'm new to ITK and I am trying to understand how the MultiResMIRegistration example application works. I managed to run samples images from brainweb and I got decent results (They were oriented correctly). However, I created some of my own vtkImages from microCT scans of bone specimens. The specimens I was making them from had be thresholded so they were binary. I made one image. And then I rotated the specimen and made a second image. I also made a smoothed version of the original and rotated that to make another two images. (I did this because I read somewhere that when using Mattes, the moving image should be smoother) At first I got the following error with my specimens:
<br><br>Line: 193<br>Description: itk::ERROR: MutualInformationImageToImageMetric(01763328): All the sampled point mapped to outside of the moving image<br><br>However, after changing the number of iterations and learning rate I did get the program to run fee from errors. However the output would hardly be called accurate for any combination of the 4 images I created.
<br><br>So I had a a few questions.<br><br>What is a good metric to use on bone volumes?<br><br>What makes for a good metric in general?<br><br>How does one configure the param.file for the MultiResMIRegistration example correctly without playing a guessing game to see whether or not errors result? (Like how can one tell, when one will get the Line 193 Error?)
<br><br>Here's a link to one of the vtkImages. <br><br><a href="http://www.yousendit.com/transfer.php?action=download&ufid=7A676C6B77938FB4">http://www.yousendit.com/transfer.php?action=download&ufid=7A676C6B77938FB4
</a><br><a href="http://www.yousendit.com/transfer.php?action=download&ufid=E9D4EECF2A3CD065">http://www.yousendit.com/transfer.php?action=download&ufid=E9D4EECF2A3CD065</a><br><a href="http://www.yousendit.com/transfer.php?action=download&ufid=BAC0A34D221379C8">
http://www.yousendit.com/transfer.php?action=download&ufid=BAC0A34D221379C8</a><br><br>Thanks<br>Jonathan<br>