<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Dear Sir,</div><div><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">I have a problem about deformation field. I try to implement Demons Algorithm in Medical Image Processing. I use B-Splines transformation to get Deformation vector field of first transformation image and second transformation image. Afterthat, I will iterate B-Spline transformation step until no significant change in the deformation vector field. So, I must calculate difference (deviation) between previous deformation vector field and pos- deformation vetor field to converge. How to compare deviation beween deformations vector field. </div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif;
background-color: transparent; font-style: normal;">Best Regards,</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">Bui Toan<br></div></div></body></html>