<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div id="yiv9690398698"><div><div style="color: rgb(0, 0, 0); font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; background-color: rgb(255, 255, 255);"><div id="yiv9690398698yui_3_16_0_1_1402648071830_2474">Hi everyone,</div><div id="yiv9690398698yui_3_16_0_1_1402648071830_2474"><br id="yiv9690398698yui_3_16_0_5_1402648071830_13"></div><div id="yiv9690398698yui_3_16_0_1_1402648071830_2474" style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; font-style: normal; background-color: transparent;">In ITK manual, </div><div id="yiv9690398698yui_3_16_0_1_1402648071830_2474" style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; font-style: normal; background-color: transparent;">sigmoid filter example has 0-255
range & alpha, beta values are taken as per actual intensity of pixels in ROI</div><div id="yiv9690398698yui_3_16_0_1_1402648071830_2474" style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; font-style: normal; background-color: transparent;"><br id="yiv9690398698yui_3_16_0_5_1402648071830_18"></div><div id="yiv9690398698yui_3_16_0_1_1402648071830_2474" style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; font-style: normal; background-color: transparent;">but when we go to level set segmentation, Sigmoid values are between 0-1 (speed image). </div><div id="yiv9690398698yui_3_16_0_1_1402648071830_2474" style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; font-style: normal; background-color: transparent;">is there any requirement of normalization etc ?</div><div
id="yiv9690398698yui_3_16_0_1_1402648071830_2474" style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; font-style: normal; background-color: transparent;">can anyone help me to clarify this doubt?</div><div id="yiv9690398698yui_3_16_0_1_1402648071830_2474" style="color:rgb(0, 0, 0);font-size:16px;font-family:'times new roman', 'new york', times, serif;font-style:normal;background-color:transparent;" class="yui_3_16_0_1_1402648568228_2712"><br></div><div id="yiv9690398698yui_3_16_0_1_1402648071830_2474" style="color:rgb(0, 0, 0);font-size:16px;font-family:'times new roman', 'new york', times, serif;font-style:normal;background-color:transparent;" class="yui_3_16_0_1_1402648568228_2712">thank you</div></div></div></div></div></body></html>