<div><br>Hi Luis,<br>I would like to make my question clearly.<br>Suppose I have two images A (in state S_A) and B(in state S_B), so there may be a motion field between A and B (also we can say there may be a motion field between S_A and S_B).<br>I want to transform A to B. If the motion between A and B is rigid, I can first find the overlap between A and B and compute the transform matrix, then the transform matrix can be applied to every pixel in A to get a new version A'.<br>But the transform is non-rigid, so I only can transform the pixels in the overlaps. The pixels out the overlap can not be transfered. (my understanding is right?)<br>This is my main problem. how to transform the pixels out the overlap ?<br><br>Now , let me make a summary:<br>(1) Image A and B have some overlap.<br>(2) We can compute the bspline parameters between A and B (note only valid in overlap regions ). <br>(3) I want to transfer every pixels in A using the spline parameters. <br><br>This is for bspline case. If I use optical flow method, the velocity is only in the overlap, how to transform the pixels out the overlap? <br><br>I am not sure if I make it clearly.<br>may be my understanding is wrong.<br>thanks<br>best<br><br></div>Han<br><pre>在2009-04-17 01:12:07，"Luis Ibanez" <luis.ibanez@kitware.com> 写道：<br>><br>>Hi Han,<br>><br>><br>>The description of your problem is not very clear.<br>><br>><br>>You say that:<br>><br>><br>> A) Your Fixed and Moving images have the same size.<br>><br>> B) You are doing deformable registration using BSplines.<br>><br>> C) Fixed and Moving images have a small overlap between them.<br>><br>> D) That your goal is to deform the *fixed* image !!!<br>> Is that right ?<br>><br>><br>>----<br>><br>>Can you confirm if (A,B,C and D) are indeed what you<br>>want to do ?<br>><br>><br>> Thanks<br>><br>><br>> Luis<br>><br>><br>>-----------------<br>>Han D. F wrote:<br>>> <br>>> hello dears,<br>>> <br>>> I have fixed image and moving image to be registered.<br>>> my goal is to warp moving image to fixed image and the size is equal to <br>>> moving image size.<br>>> here is the question:<br>>> the examples just warp to the results image with size of fixed image.<br>>> <br>>> how to solve my question?<br>>> <br>>> fixed image and moving image have some overlap but not very much.<br>>> then I just used the overlap to compute the b-spline parameters.<br>>> my final goal is to deformed the whole fixed image using bspline parameters.<br>>> so some problems I mentioned above will occur.<br>>> <br>>> anybody can give me some suggestion?<br>>> <br>>> thanks a lots.<br>>> <br>>> best<br>>> hdf<br>>> <br>>> <br>>> <br>>> <br>>> <br>>> <br>>> ------------------------------------------------------------------------<br>>> 网易邮箱，中国第一大电子邮件服务商 <http://email.163.com><br>>> <br>>> <br>>> ------------------------------------------------------------------------<br>>> <br>>> _____________________________________<br>>> Powered by www.kitware.com<br>>> <br>>> Visit other Kitware open-source projects at<br>>> http://www.kitware.com/opensource/opensource.html<br>>> <br>>> Please keep messages on-topic and check the ITK FAQ at: http://www.itk.org/Wiki/ITK_FAQ<br>>> <br>>> Follow this link to subscribe/unsubscribe:<br>>> http://www.itk.org/mailman/listinfo/insight-users<br></pre><br><!-- footer --><br><span title="neteasefooter"/><hr/>
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