colour_hdri.tonemapping_operator_logarithmic¶
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colour_hdri.
tonemapping_operator_logarithmic
(RGB, q=1, k=1, 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 given RGB array tonemapping using the logarithmic method.
Parameters: - RGB (array_like) – RGB array to perform tonemapping onto.
- q (numeric, optional) – \(q\).
- k (numeric, optional) – \(k\).
- colourspace (colour.RGB_Colourspace, optional) – RGB colourspace used for internal Luminance computation.
Returns: Tonemapped RGB array.
Return type: ndarray
References
Examples
>>> tonemapping_operator_logarithmic(np.array( ... [[[0.48046875, 0.35156256, 0.23632812], ... [1.39843753, 0.55468757, 0.39062594]], ... [[4.40625388, 2.15625895, 1.34375372], ... [6.59375023, 3.43751395, 2.21875829]]]), ... 1.0, 25) # doctest: +ELLIPSIS array([[[ 0.0884587..., 0.0647259..., 0.0435102...], [ 0.2278222..., 0.0903652..., 0.0636376...]], <BLANKLINE> [[ 0.4717487..., 0.2308565..., 0.1438669...], [ 0.5727396..., 0.2985858..., 0.1927235...]]])