Camera Calibration#

Absolute Luminance - Lagarde (2016)#

colour_hdri

absolute_luminance_calibration_Lagarde2016(...)

Perform absolute Luminance calibration of given RGB panoramic image using Lagarde (2016) method.

upper_hemisphere_illuminance_weights_Lagarde2016(...)

Compute upper hemisphere illuminance weights for use with applications unable to perform the computation directly, i.e., Adobe Photoshop.

Debevec (1997)#

colour_hdri

camera_response_functions_Debevec1997(...[, ...])

Return the camera response functions for specified image stack using Debevec (1997) method.

g_solve(Z, B[, l_s, w, n])

Given a set of pixel values observed for several pixels in several images with different exposure times, this function returns the imaging system's response function \(g\) as well as the log film irradiance values \(lE\) for the observed pixels.