Methods · 11 bone-level measurements
Every bone-level measurementand how a photograph gives it.
The clinical versions of these need a calibrated lateral X-ray, a CT, or callipers on the face. A photograph gives their visible equivalents — silhouette angles, shading steps, directions and ratios of your own features — and that is what the report measures, scores and states the method for. Nothing is left out; nothing is invented in millimetres.
From your smile, ¾, profile and hairline photos: jaw definition and taper, cheek shading, nasal dorsum line, chin–lip direction, forehead slope, neckline, ear size and height, smile width, tooth and gum show, and your real facial thirds — each with a bucket and an error band.
| Measurement | What Canthion reports, and how | Why the clinical number needs more than a photo |
|---|---|---|
| Gonial angle bony | Jaw taper (soft-tissue angle from the jaw angle to the chin, levelled to your pupils) and jaw definition (the shadow step across the jaw line) from your ¾ views, plus jaw:cheek width from the front — each with an error bar and a grade. more → | Gonion is a landmark on the mandibular BONE. |
| Ramus : mandibular body ratio bony | Jaw taper and jaw:cheek width. The vertical ramus is hidden in any photo, so the ratio is not attempted; the two silhouette reads carry what it would tell you. more → | The ratio requires condylion (the top of the mandibular condyle, inside the temporomandibular joint) — a point that is not externally visible at all — and gonion (see above). |
| Nasofrontal, nasofacial, nasolabial, mentolabial & cervicomental angles lateral | Chin–lip direction (behind / level / ahead of the nose-tip→chin line), forehead slope and dorsum line from your profile — buckets with an error band rather than degrees to two decimals. more → | These are lateral cephalometric measurements with clinical tolerances of ±1–2 mm / a few degrees. |
| Ricketts E-line, Steiner S-line, Holdaway H-line lateral | Chin–lip direction from your profile: a direction and a share of the nose-tip→chin distance, with its ±. more → | Lip-to-line distances with norms of a few millimetres (E-line: upper lip −4 ± 2 mm). |
| Orbital vector / infraorbital rim position bony | Under-eye darkness (ΔL*), eye openness and canthal tilt — the parts of the orbit a photo can read — scored and placed on the masculinity axis. more → | Defined in lateral view as the sagittal relationship of the cornea to the inferior orbital RIM — a bony structure. |
| Ogee curve score invented | Cheek shading in the ¾ view (light on the cheekbone vs a flat mid-cheek) and midface width — the visible part of the curve. more → | The ogee is a qualitative description of the S-shaped malar–submalar contour seen on a three-quarter view, used in custom-implant planning. |
| Golden ratio / Marquardt Phi mask fit refuted | The measured optima instead of 1.618: Pallett's ratios (0.36 vertical, 0.46 horizontal), which are the values raters actually preferred — scored like every other proportion. more → | Refuted with morphometric methods. |
| Facial width-to-height ratio (fWHR) refuted | Width:height with your hairline placed (auto-detected or from your hair-back photo), scored, plus a masculinity axis built from the traits that genuinely separate the sexes. more → | As an individual-level trait indicator, discredited. |
| Chin projection vs a bony reference plane (zero meridian, etc.) lateral | Chin–lip direction from the profile and chin share of the lower face from the front, with the masculinity read on the chin and the beard call that follows. more → | Gonzalez-Ulloa's zero meridian drops a vertical from nasion with the head in Frankfort horizontal. |
| Fitzpatrick type / Individual Typology Angle from RGB uncalibrated | Skin depth (L*), undertone, chroma and colour season from a white-balanced sample — described and used for your palette, not forced into a phototype. more → | ITA requires calibrated CIE L*a*b* colorimetry under a known illuminant. |
| Any absolute measurement in millimetres scale | Everything as ratios of your own features (iris width, inter-pupil distance, face height) — the only scale a single photo supports — and a score out of 100 on each. more → | Scale is unrecoverable from a single uncalibrated 2D image. |
And the score
Every proportion is scored on its distance from the optimum for your reference group and graded A–F; the overall score weights harmony, skin, leanness & definition and symmetry. The construction is printed on the report. Methodology · Start an analysis