<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Hello, <br></div><div><br></div><div>I am trying to use "Example/ImageRegistration12.cxx" to perform Mask Registration. When I simply changed its dimension from 2D to 3D, which is my actual goal, it cannot compile, and gave a full screen of error. <br></div><div><br></div><div>How can I do it in 3D space? <br></div><div><br></div><div>Thank you. <br></div></div></body></html>