測れる写真

Measurable Photo keeps photos, notes, pen markups and measurement records together. The current app interface is in Japanese. Photo capture, importing, viewing, notes, pen markups and photo sharing are free. Ordinary photos support pixel-distance measurement. Conversion to meters is an estimate for flat subjects photographed nearly straight-on, with a known reference length in the same plane. Angled views introduce perspective errors even within the same plane. Perspective errors and differences in depth are not corrected. A single ordinary photo does not provide depth. On supported LiDAR iPhone and iPad models, an in-app purchase unlocks saving 3D information at capture time and checking distances including depth. Measurement features including CSV and HTML viewer exports are also available through an in-app purchase. Non-LiDAR AR measurement uses 3D feature points saved during AR capture on a supported device, not an ordinary imported photo. Select two points to see their distance, including depth. Drag an endpoint to adjust it to a nearby recorded 3D point. Locations without usable measurement points cannot be selected. Measurement records can be deleted separately from photographs. Results depend on capture distance, surface material, lighting and point selection. Compare against physical measurements when accuracy matters.