void Posterize(unsigned char* pPixelData, int width, int

    height)



         IppiSize roi =  width, height

    ;


         Ipp8u thresholds[] =  128, 128, 128

    ;


         Ipp8u valuesLT[] =  0, 0, 0 ;


         Ipp8u valuesGT[] =  255, 255, 255

    ;


         ippiThreshold_LTValGTVal_8u_C3IR(



             pPixelData,

    width*3, roi,


             thresholds,

    valuesLT,


             thresholds,

    valuesGT);