Point-n-Capture: how phone-based planimetry replaces the wound ruler
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A deep dive into Point-n-Capture — how it finds the wound border in ~15 seconds, measures area and depth by planimetry, and drafts tissue percentages without a sticker or ruler.
Wound measurement is the step most clinics quietly get wrong. Paper rulers round. Stickers fall off. Depth gets estimated. Point-n-Capture is WoundScribe's imaging agent, and it exists to turn a phone photo into a defensible measurement in about fifteen seconds.
What it does in a visit
Hold the phone over the wound. The agent identifies the wound border, traces it, and computes area, length, width, and depth by planimetry. No fiducial sticker. No manual tracing. The clinician can nudge the border before it lands in the chart.
Why planimetry beats length × width
Length × width overestimates area for irregular wounds — sometimes by 40% or more. Planimetry follows the actual perimeter, so trend lines reflect real change instead of measurement noise. That matters when a payer asks whether the wound is progressing toward healing.
Structured description, drafted alongside
As the clinician describes the wound, tissue percentages (granulation, slough, eschar), exudate, and periwound observations populate the structured description. Review, adjust, sign — the free-text narrative and the structured fields agree because they came from the same moment.
Where it plugs in
The measurement flows into the SOAP note, into the Healing analytics dashboard as a data point on the trend line, and into the coding layer where wound size can drive CPT selection.
What it doesn't do
It doesn't replace clinical judgment on tunneling or undermining — those still need probing. It doesn't diagnose etiology. It measures and describes; the clinician decides.
See it in context on the AI-powered wound imaging page.