crungus amongus

The eigencrungi

Move the sliders to combine patterns of variation across 24,400 archive images. The display starts with their mean image. Select an archive thumbnail to compare its reconstruction with the original. Images are centre-cropped and resized to 128 × 128 pixels before analysis.

Numbered sliders are principal components fitted to the image pixels. Their stability scores describe how closely they reproduce across subsets of the archive. The separate “crungus-ness” slider follows similarity to CLIP's text embedding of “crungus”, with a pixel visualisation fitted from the archive.

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This experiment adapts the eigenfaces approach introduced by Turk and Pentland in 1991: represent images as a mean plus weighted principal components. Here, subjects are not aligned before analysis, so components capture differences in brightness and framing as well as depicted subjects. Retaining a limited number of components produces an approximation of each image.

Stability is the cosine similarity between corresponding components fitted to disjoint halves of the archive, averaged over eight splits. Higher scores indicate closer agreement across those splits. We name components only when their score exceeds our chosen threshold of 0.7. Scores below that threshold indicate less reproducible directions, which remain available to explore. Read about the method or see the historical experiments.