<div dir="ltr"><div>Not stupid at all. We have recently introduced the possibility to automatically compute the I0 (pixel value without object). This is the filter I0EstimationProjectionFilter in the ProjectionsReader, see graph in <a href="http://www.openrtk.org/Doxygen/classrtk_1_1ProjectionsReader.html">doc</a>. In many scanners, the exposure varies from frame-to-frame and we wanted this to be projection-specific which is why we did this. We also think that all the preprocessing is more efficient per projection but this is pure conjecture.<br></div><div>There were only pros in our opinion but do you see cons to this solution?<br></div>Simon<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jun 11, 2015 at 7:06 PM, Chao Wu <span dir="ltr"><<a href="mailto:wuchao04@gmail.com" target="_blank">wuchao04@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">Hi all,</p>
<p dir="ltr">Maybe a stupid question... what is the purpose of the streaming filter at the end of the mini-filter pipeline inside the ProjectionsReader?<br>
Thanks.</p>
<p dir="ltr">Regards, Chao</p>
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