What this experiment shows
The overall score ranges from 83 to 87, while the geometry score stays at 86 and symmetry stays at 100. Only the photo-presentation contribution changes in this controlled setup.
Inputs and method
We hold the synthetic coordinate fixture, 900 × 900 image size, contrast (72) and sharpness (78) fixed. We vary the brightness signal from 15 to 95 in steps of 10, then run the same geometry and overall calculations used by the free tool. The signal is an internal 0–100 value, not lux, exposure stops or a lighting condition measured from a photograph.
Calculation version: ARF calculation experiments 1.0. Engine: ARF Local Geometry v3.0.
Calculated results
| Brightness input | Symmetry | Geometry | Photo | Overall |
|---|---|---|---|---|
| 15 | 100 | 86 | 68 | 83 |
| 25 | 100 | 86 | 72 | 84 |
| 35 | 100 | 86 | 77 | 85 |
| 45 | 100 | 86 | 81 | 86 |
| 55 | 100 | 86 | 85 | 87 |
| 65 | 100 | 86 | 80 | 86 |
| 75 | 100 | 86 | 76 | 85 |
| 85 | 100 | 86 | 71 | 84 |
| 95 | 100 | 86 | 67 | 83 |
How to use this when reading your result
Read photo quality beside the face score. A difference between geometry and presentation is a difference between two separate indices; it is not the number of points to add to your overall score. In the combined formula, a ten-point change in presentation contributes two points before rounding, with all other terms fixed.
What this experiment cannot tell you
Real lighting can also affect where the detector places landmarks. This test deliberately freezes landmarks to isolate the direct scoring effect. It cannot tell you how much a lamp, shadow or exposure change will affect a real photo, or whether symmetry will remain constant in that photo.
Sources and calculation choices
- MediaPipe Face Landmarker documentation — Google AI Edge. Documents the model and its 478 estimated landmarks. Our scores, shape profiles and style suggestions are our own calculations, not MediaPipe outputs. A landmark detector is not an attractiveness model and does not validate our scoring weights.
See the full source notes and methodology. To report an error, contact us with the page URL and the input or calculation that appears wrong.