Product-on-background compositions, alpha PNGs over transparency, and hard-case edges — fur, mesh, glass refraction, colour-matched backgrounds — for scoring removers and recomposite workflows.
A coffee mug photographed on a clean studio-white background — the easy input for a background remover, paired 1:1 with its transparent cut-out for scoring.
The expected transparent cut-out of the coffee mug, paired with the on-background version — the ground truth for a background-removal test.
The coffee mug with a soft drop shadow on transparency — tests whether a background remover keeps or discards the contact shadow.
A half-full drinking glass rendered with partial transparency — the hard case for background removers that assume every subject pixel is opaque.
A left-to-right alpha gradient over a solid colour, for testing how a viewer or compositor renders partial transparency.
A potted plant with many thin leaves and stems on transparency — the canonical fine-edge test for how cleanly a background remover cuts around delicate foliage.
An apple on a busy, colour-matched background — the hard input for a background remover or matting model. Score a prediction against the paired ground-truth cut-out and alpha mask.
The ground-truth transparent cut-out of the apple used in the cluttered-background hard case — the ideal output of a perfect background remover.
The binary ground-truth alpha mask (white = subject, black = background) for the cluttered-background apple — compute IoU or boundary F-score of a predicted mask against this file.
Synthetic fur-like fibres on a cluttered background — a classic background-removal failure case.
Ground-truth RGBA cut-out for the fur-edge hard case.
Binary mask for the fur-edge hard case.
Chain-link / mesh with interior holes — tests whether a removers keeps background visible through the grid.
Ground-truth mesh cut-out with transparent holes.
Binary mask for the mesh-fence hard case.
Subject colours deliberately match the background clutter — a hard segmentation case.
Ground-truth cut-out for the colour-matched hard case.
Binary mask for the colour-matched hard case.
Mug with a handle interior hole on clutter — background should show through the handle.
Ground-truth mug cut-out including the transparent handle hole.
Trimap for the handle-hole mug (black/gray/white) for matting tools.
Semi-transparent glass bottle on clutter — partial-alpha background-removal hard case.
Ground-truth partial-alpha glass bottle cut-out.
Binary mask for the glass-bottle hard case.
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