Orthoface
Orthoface - iOS
Orthoface - vision os
Orthoface - iOS Apple Vision Pro QR ⇄ Connectivity Workflow
How the iPhone captures the face, calculates measurements, pairs with Vision Pro by QR/axes, and renders the measurements as immersive overlays over the subject.
1. Executive workflow summary
Orthoface uses a two-device architecture. The iPhone is the capture and measurement engine: it uses the front camera and ARKit/depth face mesh to detect facial vertices, apply the fixed anatomical vertex-ID map, compute symmetry, φ-ratio, Marquardt-style mask, Golden Dodeca, φ³, curve/spline, and PCA-plane measurements. Apple Vision Pro is the spatial viewer: it receives compact measurement packets over a local device-to-device connection and renders the selected points, lines, labels, planes, corrected/reference meshes, and masks in immersive space.
Why the QR alignment is needed: the QR marker gives both devices the same reference origin and XYZ axes. After that shared coordinate frame is established, the app can place the measurement overlays at the subject’s location rather than
floating away from the subject or appearing only as a flat fallback.
Download and print in 12cmx 12 cm
QR pairing and shared axes — step by step
1. Prepare: Open Orthoface on iPhone and Apple Vision Pro. Confirm camera, local network, and export consents. The iPhone may show the QR/axes control first in the capture panel.
2. Present marker: Place the QR/axes marker where the iPhone back camera and the Vision Pro can observe it. The marker should be flat, well lit, and not covered by the subject.
3. Match QR → front: Press Match QR → front. The iPhone uses the back camera to identify the QR marker. Vision Pro also observes the same marker from the viewer side.
4. Compute shared coordinate frame: Both devices assign the same origin to the marker and the same directional axes: red X, green Y, blue Z. The app stores the transform from iPhone capture coordinates to Vision Pro world coordinates.
5. Pairing confirmation: When transforms agree, pairing lamps turn green. If not, show yellow/red status and continue with fallback until the marker is reacquired.
6. Switch to live capture: The iPhone returns to front-camera face capture. It computes face mesh, anatomical points, masks, and measurements continuously.
7. Stream and render: The iPhone sends compact packets. Vision Pro rebuilds the active overlay family only, so the selected points, mask lines, IDs, and planes appear over the subject in immersive space.
References and evidence.
1.Taylor HO, Morrison CS, Linden O, Phillips B, Chang J, Byrne ME,
Sullivan SR, Forrest CR. Quantitative facial asymmetry: using three-dimensional photogrammetry to measure baseline facial surface symmetry. J Craniofac Surg. 2014;25(1):124-128.
2. Justyna Chojdak-Łukasiewicz ,Bogusław Paradowski Facial Asymmetry: A Narrative Review of the Most Common Neurological Causes .Symmetry 2022, 14(4), 737; https://doi.org/10.3390/sym14040737
3. Tolleson SR, Kau CH, Lee RP, English JD, Harila V, Pirttiniemi P, Valkama M. 3-D analysis of facial asymmetry in children with hip dysplasia. Angle Orthod. 2010 Jul;80(4):519-24. doi: 10.2319/082009-472.1. PMID: 20482357; PMCID: PMC8966455.
4. Baratta VM, Linden OE, Byrne ME, Sullivan SR, Taylor HO. A Quantitative Analysis of Facial Asymmetry in Torticollis Using 3-Dimensional Photogrammetry. Cleft Palate Craniofac J. 2022 Jan;59(1):40-46. doi: 10.1177/1055665621993284. Epub 2021 Feb 17. PMID: 33593100.
5. Akbari MR, Khorrami Nejad M, Askarizadeh F, Pour FF, Ranjbar Pazooki M, Moeinitabar MR. Facial asymmetry in ocular torticollis. J Curr Ophthalmol. 2015 Nov 23;27(1-2):4-11. doi: 10.1016/j.joco.2015.10.005. PMID: 27239567; PMCID: PMC4877722.
6.Kittur D. The fate of facial asymmetry after surgery for "muscular torticollis" in early childhood. J Indian Assoc Pediatr Surg. 2016 Apr-Jun;21(2):57-60. doi: 10.4103/0971-9261.176936. PMID: 27046975; PMCID: PMC4790129.
8.McDonnell, R. and McNamara, A. Application of the Golden Ratio to 3D Facial Models: 3D face scans, Golden Mask construction, ideal feature positions, and smooth morphing concepts.
9.Marquardt, S. R. US Patent 5,659,625: mathematically inter-related pentagon overlay systems and major anthropometric-point alignment.
Disclaimer.
Regarding its plausibility app offers no diagnosis or treatment. App provide an early indication that further evaluation may be warranted by Speciality Doctor. Algorithm in App detects in surface Irregularity between left and right site of the face. Explicitly is announced that the app is not for diagnosis. Clinical judgment and experience are required to properly use the software. App alone do not replace an M.D. or specialist. All information received from the App output must be reviewed before any attempted treatment. The software is not for primary image interpretation. Any influence to the operators in making decisions remains User own responsibility and experience. App does not dispense medical advice. Patient should seek a doctor’s advice in addition using this app and or before making any medical decisions for themself. Never substitute or replace doctors advice or change treatment modalities based on any measured outcome. App indicated for assisting healthcare professionals for scientific