Point-and-Capture Wound Imaging: Markerless Measurement From a Smartphone
imaging
A deep dive into markerless wound measurement — how a smartphone photo becomes length, width, depth, and tissue composition without a ruler or sticker.
Traditional wound measurement means rulers, cotton swabs, disposable markers, and manual entry. Point-and-capture imaging replaces all of it with a single smartphone photo.
What markerless means
No fiducial sticker on the patient. No calibration card. The camera and on-device geometry do the work, so the workflow is one photo per wound — not a staging exercise. Full technical breakdown is in the Point-n-Capture deep dive.
What gets measured
- Length and width at the longest axes
- Surface area as a true polygon, not a length × width approximation
- Depth from parallax and surface reconstruction
- Tissue composition — granulation, slough, eschar, epithelialization — as percentages
- Peri-wound markers where present
How it lands in the chart
Measurements attach to the encounter automatically. The image, the polygon, and the numeric values become part of the AI-powered EMR for wound care record, timestamped and comparable visit-over-visit.
Why this matters for healing analytics
Consistent, operator-independent measurements are the foundation for trajectory analysis. When every visit is measured the same way, the healing dashboard can flag stalled wounds early and support continued-care documentation.
What this replaces
Rulers, transparency tracings, marker stickers, separate camera apps, and re-entering numbers into the note. One capture, done.