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You can measure the distance between 2 or more points on the map. For example, you can measure the mileage in a straight line between 2 cities. On your iPhone or iPad, open the Google Maps...
With the sensor size, image pixel resolution, focal length, and known subject size, you can back-calculate (well, estimate) the distance between the camera and subject (assuming that the subject is reasonably parallel to the camera sensor plane).
Use the Measure app and your iPhone camera to measure nearby objects. iPhone automatically detects the dimensions of rectangular objects, or you can manually set the start and end points of a measurement.
In addition, call the distance between the camera and the two points $L$. The camera's field of view ($FOV$) (or angle of view as is more common in photography) can be calculated by $$ FOV = 2\arctan\left(\frac{d}{2F}\right) $$
17 wrz 2018 · How to Measure Distances With Your iPhone. Your iPhone now contains a "Measure" app that acts as a high-tech tape measure. Just launch the app, point your camera at something, and it will measure dimensions of objects in the real world. This is one of the many new features in the iOS 12 update.
5 sty 2023 · To measure distance between two points in Google Maps on iPhone, Launch Google Maps > Then touch and hold on to a place > Tap Measure distance > See the distance in the bottom.
16 lip 2016 · To solve this problem we may use two or more images to measure the distance. Provided you can measure all angles and distance between two camera positions, you can also calculate distance to the remote object. But measuring all angles is not an easy task.
