eradiate.scenes.measure.Measure¶

class eradiate.scenes.measure.Measure(id='measure', srf=NOTHING, sampler='independent', rfilter='box', spp=1000)[source]¶

Bases: NodeSceneElement, ABC

Abstract base class for all measure scene elements.

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.

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.

See also

mitsuba_run()

Notes

This class is meant to be used as a mixin.
Raw results stored in the results field as nested dictionaries with the following structure:
```
{
    spectral_key_0: dict_0,
    spectral_key_1: dict_1,
    ...
}
```
Keys are spectral loop indexes; values are nested dictionaries produced by mitsuba_run().

is_distant()[source]¶: 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.

abstract 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.

See also

SceneParameter, KernelSceneParameterMap

property template¶

Kernel dictionary template contents associated with this scene element.

Returns:: dict – A flat dictionary mapping dot-separated strings describing the path of an item in the nested scene dictionary to values. Values may be objects which can be directly used by the mitsuba.load_dict() function, or DictParameter instances which must be rendered.

See also

DictParameter, KernelDict

property var¶

Post-processing variable field name and metadata.

Type:: str, dict