Specifies the Reduction Method the Source should use to reduce the bit depth of the data. Most commonly used with ICAP_PIXELTYPE = TWPT_BW to reduce gray data to black and white.
None.
Integer
No default
TWBR_THRESHOLD(0), TWBR_HALFTONES(1), TWBR_CUSTHALFTONE(2), TWBR_DIFFUSION(3)
TW_ENUMERATION, TW_ONEVALUE
ICAP_CUSTHALFTONE, ICAP_HALFTONES, ICAP_PIXELTYPE, ICAP_THRESHOLD