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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello All,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>How are you doing?<o:p></o:p></p><p class=MsoNormal>I have a grayscale CT image. And I would like to display pixels within a threshold interval of the CT image. That means only pixels within that threshold interval are shown on the screen, while the remaining pixels that are out of that threshold interval are not shown on the screen. May I ask whether there is such a class in VTK that fulfills this task?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I would appreciate a lot for your help!<o:p></o:p></p><p class=MsoNormal>Best regards,<o:p></o:p></p><p class=MsoNormal>Xiaopeng Yang<o:p></o:p></p></div></body></html>