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Measure dimensions with iPhone. 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.
30 mar 2012 · If you want to judge size without a known distance, you'll need at least two reference points. This allows you to triangulate the position of the object, get a distance to it, and use your known focal distance to calculate the size. The more complex answer is there are ways around this for example: Cheat by using a known reference:
26 maj 2011 · An easier approach is to take two photos which stay on the same line with the object, with object in the center of the image. Let distance to the object on the first photo be d1 d 1, and image size be x1 x 1: x1 f = X d1 x 1 f = X d 1.
29 mar 2023 · In this article, I explain how you can measure the distance between 2 or more locations on an Apple Map. You can figure out the straight line distance and the travel distance. For example, you can figure out the mileage between two cities or more that you place on a map.
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.
14 sty 2019 · If you know the specifics of the camera (lens system, aperture settings, etc.), then you can make a direct relationship between the size of the image and the angular size. But without a distance measurement (something the camera does not do), you can't turn that into an absolute size.
18 gru 2015 · If you know an approximate actual size dimension of something in the one picture (and if you know focal length and sensor size), you can estimate its distance using the calculator at http://www.scantips.com/lights/subjectdistance.html
