Function

CGColorSpaceCreateCalibratedGray

Creates a calibrated grayscale color space.

Declaration

CGColorSpaceRef CGColorSpaceCreateCalibratedGray(const CGFloat *whitePoint, const CGFloat *blackPoint, CGFloat gamma);

Parameters

whitePoint

An array of 3 numbers specifying the tristimulus value, in the CIE 1931 XYZ-space, of the diffuse white point.

blackPoint

An array of 3 numbers specifying the tristimulus value, in CIE 1931 XYZ-space, of the diffuse black point.

gamma

The gamma value appropriate for the imaging device.

Return Value

A new calibrated gray color space. You are responsible for releasing this object by calling CGColorSpaceRelease. If unsuccessful, returns NULL.

Discussion

Creates a device-independent grayscale color space that represents colors relative to a reference white point. This white point is based on the whitest light that can be generated by the output device. Colors in a device-independent color space should appear the same when displayed on different devices, to the extent that the capabilities of the device allow.

See Also

Creating Device-Independent Color Spaces

CGColorSpaceCreateCalibratedRGB

Creates a calibrated RGB color space.

CGColorSpaceCreateICCBased

Creates a device-independent color space that is defined according to the ICC color profile specification.

CGColorSpaceCreateWithICCProfile

Creates an ICC-based color space using the ICC profile contained in the specified data.

Deprecated
CGColorSpaceCreateLab

Creates a device-independent color space that is relative to human color perception, according to the CIE L*a*b* standard.