FID

FrechetInceptionDistance lives in artifex.generative_models.core.evaluation.metrics.image.fid.

Current Contract

• requires a caller-supplied callable feature_extractor
• does not ship a built-in Inception-v3 checkpoint or placeholder default
• computes FID from the statistics of extracted real and generated features

Example

metric = FrechetInceptionDistance(
    feature_extractor=feature_extractor,
    batch_size=32,
    rngs=nnx.Rngs(0),
)