Contrast Sensitivity

Contrast Sensitivity

colour

contrast_sensitivity_function([method])	Return the contrast sensitivity \(S\) of the human eye according to the contrast sensitivity function (CSF) described by given method.
CONTRAST_SENSITIVITY_METHODS	Supported contrast sensitivity methods.

Barten (1999) Contrast Sensitivity Function

colour.contrast

contrast_sensitivity_function_Barten1999(u)

Return the contrast sensitivity \(S\) of the human eye according to the contrast sensitivity function (CSF) described by Barten (1999).

Ancillary Objects

colour.contrast

optical_MTF_Barten1999(u[, sigma])	Return the optical modulation transfer function (MTF) \(M_{opt}\) of the eye using Barten (1999) method.
pupil_diameter_Barten1999(L[, X_0, Y_0])	Return the pupil diameter for given luminance and object or stimulus angular size using Barten (1999) method.
sigma_Barten1999([sigma_0, C_ab, d])	Return the standard deviation \(\sigma\) of the line-spread function resulting from the convolution of the different elements of the convolution process using Barten (1999) method.
retinal_illuminance_Barten1999(L[, d, ...])	Return the retinal illuminance \(E\) in Trolands for given average luminance \(L\) and pupil diameter \(d\) using Barten (1999) method.
maximum_angular_size_Barten1999(u[, X_0, ...])	Return the maximum angular size \(X\) of the object considered using Barten (1999) method.