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    Hui,<br>
    <br>
    With all level set discrete representations (dense, sparse Whitaker,
    sparse Shi or sparse Malcolm), the level set function at the last
    iteration (after the evolution) should be the same as the output.<br>
    <br>
    Did you use an observer and a command to save these images? or did
    you modify some piece of code?<br>
    <br>
    Do you save your image at the end of one iteration (after the
    evolution gets done) ?<br>
    How do you evaluate the level set function?<br>
    <br>
    Arnaud<br>
    <br>
    On 02/01/2012 08:50 AM, Hui Tang wrote:
    <blockquote
cite="mid:CAEz0C-60adGQuXdKU-yoPCaEiv0QEq08Vtcy5eB432urtWPW2w@mail.gmail.com"
      type="cite">ha Arnaud, thank you for reply.<br>
      <br>
      I am using ITK4.....embedding image is the signed distance image
      whose zero value shows the current surface.<br>
      I runned a program that combines several itk levelset terms.<br>
      I would like to monitor the surface evolution, so I saved the
      signed distance image in every n&nbsp; iteration.<br>
      but I expect the last signed distance image should be the same as
      the final segmentation, i.e. that one that I got outside ITK
      classes using the code from ITK example.<br>
      <br>
      Best,<br>
      <br>
      HUi<br>
      <div class="gmail_quote">On Wed, Feb 1, 2012 at 2:41 PM, Arnaud
        Gelas <span dir="ltr">&lt;<a moz-do-not-send="true"
            href="mailto:arnaudgelas@gmail.com">arnaudgelas@gmail.com</a>&gt;</span>
        wrote:<br>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          <div bgcolor="#FFFFFF" text="#000000"> Hi Hui,<br>
            <br>
            It's not clear to me what you actually mean by "embedding
            function" / "embedding image" ?<br>
            This function / image are embedded with respect to which
            class?<br>
            What kind of level-set representation are you using?<br>
            <br>
            Thanks,<br>
            Arnaud
            <div>
              <div class="h5"><br>
                <br>
                On 02/01/2012 08:32 AM, Hui Tang wrote: </div>
            </div>
            <blockquote type="cite">
              <div>
                <div class="h5">Dear itk users,<br>
                  <br>
                  &nbsp;I outputed my intermediate embedding function every n
                  iterations (I got it inside one of the levelset
                  terms), but&nbsp; I compare that with the one&nbsp; that I got
                  after evolution&nbsp;
                  (level_set-&gt;GetLabelMap()-&gt;GetPixel(idx) ), they
                  are pretty much different.<br>
                  <br>
                  Should itk embedding image in the last iteration be
                  the same as the output embedding image?<br>
                  <br>
                  Looking forward to your reply. <br>
                  <br>
                  Best, Hui<br>
                  <br>
                  <br>
                  <br>
                  <fieldset></fieldset>
                  <br>
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