Calibrate first
Use readable tape or a known object on the same plane. A mask or a pixel count is not centimetres by itself.
MEASURE · MODEL · REPORT
A calmer way to read a frame.
Upload a reviewed adult frame for a conservative shape read, then add calibration only when the image supports it.
Adults 18+ only. Images are sent only when you request a review and are not saved to your report.
PHOTO WORKSPACE
PHOTO → REPORT
Upload a frame
Upload one adult frame and let the lab build the shape report automatically. Manual calibration is optional.
PHOTO INPUT
automatic reportUpload a frame
Add one adult frame. The lab will fill the shape report automatically, then use a visible tape, ruler, or known object only when it supports absolute size.
YOLO SERVER
required for photosConnect segmentation
Paste the HTTPS origin of your deployed YOLO API. The app will test /health before saving it.
Choose a photoor drag it here · JPG, PNG, WebP up to 12 MB
YOLO segmentation + review
mask + Gemini QCThis is a visual aid, not a measurement or medical diagnosis. Confirm any scale manually.
REFERENCE SET
Measured anchors, not guesses.
A compact view of the high-confidence rows supplied with this workspace. Use them to sanity-check tape and hand-calibrated readings.
High-confidence calibration rows
METHOD
Keep the scale honest.
The toolkit separates what is measured from what is described. That is the whole point.
Treat hands as a range
Start from the average adult male hand breadth of 8.9 cm, then refine against measured anchors. Hand estimates never exceed Medium-High.
Shape is its own layer
Relative girth, head prominence, sinuosity, and consistency can describe form without inventing absolute size.
Name the distortion
Close hero angles, foreshortening, hidden bases, and cropped frames can inflate a reading. Flag them instead of correcting by instinct.
ORDER OF EVIDENCE
Conservative by defaultTape / ruler → known object → hand proportion → visual shape only