colour_hdri.absolute_luminance_calibration_Lagarde2016¶
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colour_hdri.absolute_luminance_calibration_Lagarde2016(RGB, measured_illuminance, colourspace=RGB_Colourspace(sRGB, [[0.64, 0.33, ][0.3, 0.6, ][0.15, 0.06, ]][0.3127, 0.329, ]D65, [[0.4124, 0.3576, 0.1805, ][0.2126, 0.7152, 0.0722, ][0.0193, 0.1192, 0.9505, ]][[3.2406, -1.5372, -0.4986, ][-0.9689, 1.8758, 0.0415, ][0.0557, -0.204, 1.057, ]]<function oetf_sRGB>, <function oetf_reverse_sRGB>, False, False))[source]¶ Performs absolute Luminance calibration of given RGB panoramic image using Lagarde (2016) method.
Parameters: - RGB (array_like) – RGB panoramic image to calibrate.
- measured_illuminance (numeric) – Measured illuminance \(E_v\).
- colourspace (colour.RGB_Colourspace, optional) – RGB colourspace used for internal Luminance computation.
Returns: Absolute Luminance calibrated RGB panoramic image.
Return type: ndarray
Examples
>>> RGB = np.ones((4, 8, 3)) >>> absolute_luminance_calibration_Lagarde2016( # doctest: +ELLIPSIS ... RGB, 500) array([[[ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...]], <BLANKLINE> [[ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...]], <BLANKLINE> [[ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...]], <BLANKLINE> [[ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...], [ 233.9912506..., 233.9912506..., 233.9912506...]]])