Constants

CIE

colour.constants

K_M

Rounded maximum photopic luminous efficiency \(K_m\) value in \(lm\cdot W^{-1}\).

KP_M

Rounded maximum scotopic luminous efficiency \(K^{\prime}_m\) value in \(lm\cdot W^{-1}\).

CODATA

colour.constants

AVOGADRO_CONSTANT

Avogadro constant.

BOLTZMANN_CONSTANT

Boltzmann constant.

LIGHT_SPEED

Speed of light in vacuum.

PLANCK_CONSTANT

Planck constant.

Common

colour.constants

DEFAULT_FLOAT_DTYPE

alias of numpy.float64

EPSILON

FLOATING_POINT_NUMBER_PATTERN

str(object=’‘) -> str str(bytes_or_buffer[, encoding[, errors]]) -> str

INTEGER_THRESHOLD

Integer threshold value.