qualpal::metrics Namespace Reference

Color difference metrics for perceptual color comparison. More...

Classes
struct	CIE76
	CIE76 (Delta E 1976) color difference. More...
class	CIEDE2000
	CIEDE2000 (Delta E 2000) color difference. More...
class	DIN99d
	DIN99d color difference with optional power transformation. More...

Enumerations
enum class	MetricType { DIN99d , CIE76 , CIEDE2000 }
	Supported color difference metrics for palette generation. More...

Detailed Description

Color difference metrics for perceptual color comparison.

This namespace contains various color difference calculation methods that quantify the perceptual difference between colors. These metrics are used with algorithms like farthestPoints() to select visually distinct color palettes.

All metric classes follow the same interface pattern:

• Callable with operator() taking two color objects
• Template-based to accept any color type that can be converted to the required color space
• Return a numeric difference value (higher = more different)

See also

colorDifferenceMatrix() for computing full distance matrices

farthestPoints() for palette selection using these metrics

Enumeration Type Documentation

MetricType

enum class qualpal::metrics::MetricType

strong

Supported color difference metrics for palette generation.

Use this enum to select which color difference formula to use in qualpal algorithms and CLI.

Enumerator
DIN99d	DIN99d color difference.
CIE76	CIE76 (Delta E 1976) color difference.
CIEDE2000	CIEDE2000 (Delta E 2000) color difference.

Definition at line 82 of file metrics.h.