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End of preview. Expand in Data Studio

Face Detection Dataset

Small grayscale face crops + a large pool of natural-image negatives, packaged for classical face detectors (Viola-Jones, Haar cascades, sliding-window classifiers).

At a glance

Split Rows Faces / Non-faces
train 106,977 102,429 / 4,548
test 24,045 472 / 23,573 (CBCL benchmark)
negatives 29,879 — / 29,879 (Caltech-256)

Same schema across all splits: image, label (0/1), source, category.

Quick start

from datasets import load_dataset

ds = load_dataset("salvacarrion/face-detection")

# All faces for training
faces = ds["train"].filter(lambda x: x["label"] == 1)

# CBCL benchmark for evaluation
test = ds["test"]

# Hard-negative pool (raw color JPGs at native resolution)
negs = ds["negatives"]

Face sources (train split)

CelebA ships in two paired variants at the same index — same person, two crop styles:

  • celeba — loose portrait framing (hair and jaw visible).
  • celeba_aligned — tight Viola-Jones crop (eyes pinned to fixed pixel positions, face fills the 48×48 frame).

CBCL is already canonically aligned, so it has a single variant.

source Label Count Notes
celeba 1 50,000 Loose portrait. Filtered for frontal pose using the manual CelebA landmarks.
celeba_aligned 1 50,000 Same 50,000 faces tightly warped to CBCL-matched geometry.
cbcl 1 2,429 MIT CBCL #1, upsampled from native 19×19. Already canonically aligned.
cbcl 0 4,548 CBCL non-faces — matched-domain seed for stage 1 of cascade training.

Picking source == "cbcl" from train returns both faces and non-faces — filter by label to pick.

Test split

The classic CBCL Viola-Jones benchmark, untouched. Faces and non-faces live together in one split so accuracy is one pass.

Negatives split

Caltech-256 source JPGs (native color, varying resolution). Categories containing face, people, or human are excluded. Sample patches at whatever resolution your detector needs.

Aligned geometry (the *_aligned variants)

Two-point similarity transform — face shape preserved, no stretching:

  • Left eye → (12, 10) in a 48×48 frame
  • Right eye → (36, 10)

The canonical positions were measured empirically from the mean of CBCL training faces, so models trained on celeba_aligned generalize cleanly to the CBCL test benchmark.

License

Research / non-commercial use only. Cite the original sources:

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