Dear All, <div><br></div><div>I am trying to look into the ITK demons registration code and have some </div><div>difficulties in understanding the accumulation of the deformation field </div><div>between iterations. </div>
<div><br class="webkit-block-placeholder"></div><div>As in demons registration algorithm, the updating deformation field was </div><div>u = (g-f) *grad(f)/((g-f)^2+grad_mag^2).<span class="Apple-style-span" style="color: rgb(35, 110, 37); font-family: Monaco; ">
</span></div><div><br class="webkit-block-placeholder"></div><div>My question is: </div><div>How u is used to update the deformation from the previous iteration f_pre <br></div><div>(previous deformation)? was it simple addition? the new deformation
</div><div>field f_new = f_pre + u? </div><div><br></div><div>I wasn't be able to find the function in the ITK registration codes for this</div><div>field updating, and I appreciate if anyone can help me with any information.
</div><div><br class="webkit-block-placeholder"></div><div>Thanks,<br>-Minjie Wu </div><div><br class="webkit-block-placeholder"></div>