Extracting transformation coefficients from image registration plugins

Posted by John Oreopoulos on
URL: http://imagej.273.s1.nabble.com/Extracting-transformation-coefficients-from-image-registration-plugins-tp5008171.html

Hello,

I have a general question about ImageJ registration plugins such as UnwarpJ or TurboReg. I understand that the output of these plugins is to produce transformed source image to match as best as possible a target image, and the plugin with translate, rotate, and stretch/scale the source image to make that happen, but is there anyway to pull from these plugins quantitative information relating to these transformations?

For example, can I get the plugin to tell me that it had to translate image 1 by 2.3 pixels to the left and rotate it 3 degrees clockwise to make it match image 2?

I'm also not clear on how this information is relayed for an elastic stretching/compression of the image - how does one express that kind of 2D information in a single quantitative metric?

Thanks if anyone can educate me here!

John Oreopoulos
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