ImageGear Professional v18.2 > User Guide > Appendices/General Reference > TWAIN Scanning Capabilities > ICAP_BITDEPTH |
Specifies the pixel bit depths for the Current value of ICAP_PIXELTYPE. For example, when using ICAP_PIXELTYPE = TWPT_GRAY, this capability specifies whether this is 8-bit gray or 4-bit gray.
This depth applies to all the data channels (for instance, the R, G, and B channels will all have this same bit depth for RGB data). A bit depth of 8 for RGB indicates 8 bits per channel, resulting in 24-bit RGB. Therefore, for 24-bit RGB, this capability should be set to 8, not 24.
TW_UINT16
Valid Values: >=1
Default Value: N/A