VisualRuler: turns the iPhone into a measuring roulette

Augmented reality - it's not just Pokémon. You can use it to solve practical tasks, such as measuring the real objects of virtual roulette as it does VisualRuler.

If you think that an app like the Terminator eye will show the size of all the objects to which you point the camera, have to disappoint you: without your VisualRuler do not care. The application works on the principle of comparison and determines the size of unknown objects on the basis of the known. As an example serves the usual credit card, the amount of which is standard and is the same all over the world. Here's how it works.

To know the size of objects in the photo, it is necessary to put them next to the card, then more accurately tailor its border with the help of the rectangle and in the same way to measure the objects in the photo.

The application tries to determine the boundaries of objects automatically and simplify the process of fitting the measuring lines, but it does not always work. As a result, we get an accurate picture showing all the dimensions that can be shared or saved in the gallery.

The accuracy of the general good. According to VisualRuler, the size of my 13-inch MacBook Air is 30,08 × 20,3 cm, which is far from the truth (30 × 19.2 cm). Ruler and iPad Air application also measured relatively accurately. But in general, of course, the accuracy of the measurement depends on how carefully you calibrate the reference size of the map, as well as you can well take a picture. VisualRuler can only measure 2D-objects, so the perspective distortion not taken into account and will provide an additional error.

From this limitation follows another disadvantage: you can only measure the length and width but not the height of the objects. Also, the size is set to the objects themselves. Something more than a laptop to accurately measure is unlikely to succeed, because the credit card in the photo is too small and its size is determined with an error.

The idea and implementation of good applications, but with the price of the developers, obviously overdone. It would be worth it, or at least 75 149 rubles - who want to turn your iPhone into a roulette for sure there would be more.