Bug fix in histogram smoothing kernel
Bug fix in histogram smoothing kernel

BioMedIA/IRTK,sk1712/IRTK,ghisvail/irtk-legacy,BioMedIA/IRTK,sk1712/IRTK,BioMedIA/irtk-legacy,ghisvail/irtk-legacy,BioMedIA/IRTK,BioMedIA/irtk-legacy,ghisvail/irtk-legacy,sk1712/IRTK,ghisvail/irtk-legacy,BioMedIA/irtk-legacy,sk1712/IRTK,BioMedIA/IRTK,BioMedIA/irtk-legacy