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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Dear Users,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>In order to apply threshold-based region growing method for segmentation of a certain organ from a CT image, we need to provide lower and upper thresholds of that organ. I just wonder whether there is an automatic method to identify the threshold values. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal>Xiaopeng<span style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p></div></body></html>