<div dir="ltr"><div>Dear ITK Users and Devs,<br><br></div><div>I am working on vessel segmentation, using the STARE and DRIVE image datasets, and in order to deal with the image boundary I am trying to implement the following:<br>
</div><div><div><br>The preprocessing algorithm starts with a region of interest<br>(ROI) determined by the camera’s aperture and iteratively grows<br>this ROI. Each step of the algorithm consists in the following.<br>First, the set of pixels of the exterior border of the ROI is de-<br>
termined, i.e., pixels that are outside the ROI and are neighbors<br>(using four-neighborhood) to pixels inside it. Then, each pixel<br>value of this set is replaced with the mean value of its neighbors<br>(this time using eight-neighborhood) inside the ROI. Finally, the<br>
ROI is expanded by inclusion of this altered set of pixels. This<br>process is repeated and can be seen as artificially increasing the<br>ROI, as shown in Fig. 1(b).<br><br></div><div>from <a href="http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=01677727&tag=1">http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=01677727&tag=1</a><br>
<br></div><div>Is there something similar already implemented? I am considering instead to use the Wrap Pad Image Filter: <a href="http://www.itk.org/Doxygen/html/classitk_1_1WrapPadImageFilter.html">http://www.itk.org/Doxygen/html/classitk_1_1WrapPadImageFilter.html</a><br>
</div><div>to pad the region around the eye. Would this be a better possibility?<br><br></div><div>Much Appreciated,<br></div><div>Jesse<br></div><div><div dir="ltr" style="font-size:19.3939px;font-family:serif"><img src="" alt=""><br>
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