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Как измерить высоту с iPhone (люди, деревья, здания)
AR-высота использует плоскость пола плюс положение телефона. Работает на людях, деревьях и зданиях до ~30 м.
Apple Measure автодетектит рост людей. Сторонние AR-приложения распространяют это на любой вертикальный объект. Как это работает и где теряется точность.
Зачем замерять
- Person's height for ordering custom clothes or harness
- Tree height for safety / pruning planning
- Building height for solar / signage
- Ceiling height (alternative method)
Что нужно
- iPhone with Ruler AR
- Height mode
- Level ground for accuracy
Пошагово
- Stand on level ground. AR Height needs a flat reference plane. Stand on level ground, not sloped, not stairs.
- Open Height mode. In Ruler AR, switch to Height. The app projects a line on the ground at your phone's position.
- Tap the base. Aim at the base of the object (where it meets the ground). Tap to anchor.
- Aim at the top. Tilt the phone upward, keeping the on-screen crosshair on the top of the object. Tap to capture.
- Read the height. The reading appears in your chosen unit (cm, m, ft). Accuracy: ±5% under 10 m, ±10% over.
Советы
- For trees, measure from outside the drip line for cleanest base detection
- For buildings, very tall (>20 m) measurements degrade, use a laser tape for precision work
Типичные ошибки
- Sloped ground, AR ground plane gets confused
- Aiming above the object's actual top, picks up background
Частые вопросы
Can iPhone measure my own height?
Yes, point the camera at yourself in a mirror, or ask someone to point it at you. Apple Measure auto-detects.
How accurate is AR height vs a tape measure?
Within ±5% for under 5 m. Worse over distance, at 10+ m use a laser distance meter.