nFactor
Value that indicates the factor to be applied in the method operation specified in the uFlags parameter.
This parameter is used only if uFlags parameter value is FILLLUT_EXPONENTIAL, FILLLUT_LOGARITHMIC or FILLLUT_SIGMOID.
If FILLLUT_EXPONENTIAL or FILLLUT_SIGMOID flag is selected its value can be any integer (+/-).
If FILLLUT_LOGARITHMIC flag is selected its value should be >= 0.
If nFactor = 0, the lookup table will be filled linearly.