Home / How we verify

Every result is measured
against the original photo.

A rendered image is never trusted on sight. Five levels of comparison run between the model and the screen, and each one can be seen. Below are the levels, and worked examples with real scores.

Original, Simulated result, Difference map
OriginalSimulated resultDifference map
1–2
Renders per image
0.94–1.00
Similarity of a normal result
< 0.80
Triggers a re-render
100%
Simulations recorded

A comparison lab, in your browser

Drop an original and a result to run the same levels as the pipeline: alignment, framing, colour and a grey difference map. Or load a sample pair.

Runs entirely in your browser. Your photos are never uploaded.

Sample pairs

Add both photos to see the comparison.

Identical → Changed

An educational tool that mirrors the pipeline's checks. It is not a clinical or forensic assessment.

Five levels, from the first pixel to release

Pick a level to see what it compares, how it works, and a real example with measured scores.

Level 1 · On the server, automatically

Line it up

Shifted back so the face sits exactly where it was.

±8%search window

A drifting result is pulled back: Drifted result, Difference before alignment, Difference after alignment
Drifted resultDifference before alignmentDifference after alignment

A drifting result is pulled back

Here the result came back 4% larger and shifted. Compared with the original it lights up everywhere. The alignment step finds the scale and shift that match, and the picture settles.

Pixels changed

Before32.9%
After9.8%

Thin lines remain on high-contrast edges such as the shirt stripes: re-sampling never lands exactly on the original pixels.

Identical to the original → ChangedIllustrated on a sample photo already published on this site.

What it checks

The result's position and scale against the original.

How

It tries small shifts and zooms, up to 8%, and keeps the one that matches the original best.

What happens

The result is shifted back into register.

Rigorous by design.

See it on your own consultation photos.

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