eradiate.scenes.measure.MultiRadiancemeterMeasure¶

class eradiate.scenes.measure.MultiRadiancemeterMeasure(id='measure', srf=NOTHING, sampler='independent', rfilter='box', spp=1000, origins=<Quantity([[0. 0. 0.]], 'meter')>, directions=array([[0., 0., 1.]]))[source]¶

Bases: Measure

Radiance meter array measure scene element [mradiancemeter, multi_radiancemeter].

This measure scene element is a thin wrapper around the mradiancemeter sensor kernel plugin. It records the incident power per unit area per unit solid angle along a number of rays defined by its origins and directions parameters.

Parameters:

id (str, optional, default: "measure") – Identifier of the current scene element.
srf (path-like or str or SpectralResponseFunction or dict, default: DeltaSRF(wavelengths=550.0 * ureg.nm)) – Spectral response function (SRF). If a path is passed, it attempts to load a dataset from that location. If a keyword is passed, e.g. 'sentinel_2a-msi-4', the corresponding dataset is looked up through the file resolver.
sampler ({"independent", "stratified", "multijitter", "orthogonal", "ldsampler"}, default: "independent") – Mitsuba sampler used to generate pseudo-random number sequences.
rfilter ({"box", "gaussian", "tent", "mitchell", "catmullrom", "lanczos"}, default: "box") – Reconstruction filter used to scatter samples on sensor pixels. By default, using a box filter is recommended.
spp (int, default: 1000) – Number of samples per pixel.
origins (array-like, default: [[0, 0, 0]] m) – A sequence of points specifying radiance meter array positions.

Unit-enabled field (default: ucc[‘length’]).
directions (array-like, default: [[0, 0, 1]]) – A sequence of 3-vectors specifying radiance meter array directions.

Fields:

id (str or None) – Identifier of the current scene element.
srf (SpectralResponseFunction) – Spectral response function (SRF).
sampler (str) – Mitsuba sampler used to generate pseudo-random number sequences.
rfilter (str) – Reconstruction filter used to scatter samples on sensor pixels.
spp (int) – Number of samples per pixel.
origins (quantity) – A sequence of points specifying radiance meter array positions.
directions (quantity) – A sequence of 3-vectors specifying radiance meter array directions.

is_distant()¶: Return True iff measure records radiometric quantities at infinite distance.

traverse(callback)¶

Traverse this scene element and collect kernel dictionary template and parameter update map contributions.

Parameters:: callback (SceneTraversal) – Callback data structure storing the collected data.

update()¶: Enforce internal state consistency. This method should be called when fields are modified. It is automatically called as a post-init step.

property film_resolution¶

Getter for film resolution as a (int, int) pair.

Type:: tuple

property objects¶

Map of child objects associated with this scene element.

Returns:: dict – A dictionary mapping object names to a corresponding object to be inserted in the Eradiate scene graph.

property params¶

Returns:: dict[str, SceneParameter] or None – A dictionary mapping parameter paths, consisting of dot-separated strings, to a corresponding update protocol.