colour_hdri.sampling Package

Module Contents

colour_hdri.sampling.samples_Grossberg2003(image_stack, samples=1000, n=256)[source]

Returns the samples for given image stack intensity histograms using Grossberg (2003) method.

Parameters:
  • image_stack (array_like) – Stack of single channel or multi-channel floating point images.
  • samples (int, optional) – Samples count.
  • n (int, optional) – Histograms bins count.
Returns:

Intensity histograms samples.
Return type:

ndarray
colour_hdri.sampling.light_probe_sampling_variance_minimization_Viriyothai2009(light_probe, lights_count=16, colourspace=None)[source]

Sample given light probe to find lights using Viriyothai (2009) variance minimization light probe sampling algorithm.

Parameters:
  • light_probe (array_like) – Array to sample for lights.
  • lights_count (int) – Amount of lights to generate.
  • colourspace (colour.RGB_Colourspace, optional) – RGB colourspace used for internal Luminance computation.
Returns:

list of Light_Specification lights.
Return type:

list