itkConnectedThresholdImageFilterModified class.                                                             This class has been grabbed and modified from ITKv4 source tree. In its original version this class segments all the pixels/voxelswith an intensity between the threshold interval [lower upper] provided by the user. In the modified version, the user is asked to only provide an upper threshold, and all the pixels/voxels with an intensity below it are considered. In order to do so, the BelowThreshold method is used instead of BetweenThreshold.
itkConnectedThresholdImageFilterModified class.                               This class has been grabbed and modified from ITKv4 source tree. In its original version this class segments all the pixels/voxelswith an intensity between the threshold interval [lower upper] provided by the user. In the modified version, the user is asked to only provide an upper threshold, and all the pixels/voxels with an intensity below it are considered. In order to do so, the BelowThreshold method is used instead of BetweenThreshold.