The default rendering intent for the operation.
The rendering intent determines how out of gamut colors are
handled. The following options are available:
The perceptual model maps the entire gamut of the source color
space into the destination one and is good for photographic type
images. The saturation model is good for diagrams, cartoons or
posterized images where distinctiveness of color is more important
than precise color fidelity. The colorimetric methods remap only
those colors which are out of gamut. The relative one keeps the
color values the same while allowing the brightness to vary. The
absolute colorimetric method uses the closest color at the gamut
In general you will want to use a perceptual intent when mapping
from a large gamut color space (e.g. RGB) to a narrow one (e.g.
CMYK). In general you will want to use a relative colorimetric
intent when mapping between similar color spaces (e.g. RGB to RGB
or CMYK to CMYK).