What could cause the symmetric shape that resulted after the subtraction of registed moving image from the fixed image?

31 August 2018 1 7K Report

I made a registration between fixed and moving image using affine transform and differences metric. I subtracted the result image from the fixed image to evaluate the registration. As you see in the image after the subtraction there is symmetric shape around the circle. Is the interpolation issue? what could be the cause?.

Ravimal Bandara

Did you check whether your image registration works properly by visualizing the correspondency? It seems that the scale transformation is erroneous. My suggestion is first verify that you do not have any problem with the registration and then look into the transformation process.

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