PHOTMTRICINTERP

typedef enum
{
   PME_MINISWHITE =0 ,/* Grayscale image, minimum value is white */
   PME_MINISBLACK =1 ,/* Grayscale image, minimum value is black */
   PME_RGB =2 ,/* RGB color model */
   PME_PALETTE =3 ,/* color map indexed (palletized) */
   PME_MASK =4 ,/* 1-bit transparency mask */
   PME_SEPARATED =5 ,/* color separations (usually CMYK) */
   PME_YCBCR =6 ,/* CCIR 601 YcbCr image */
   PME_CIELAB =8 /* 1976 CIE L*a*b* image */
} PHOTMTRICINTERP, *pPHOTMTRICINTERP;

The PHOTMTRICINTERP enumerated type is used to indicate the photometric interpretation that should be saved in a file when saving TIFF files.