Why 360 photo in Google Street View is supported only in phones with gyroscope?

Question

I got few phone but all without gyroscope. In all of them, Street View app says:




360 photo capture is not supported on this device.




Why gyroscope is a must, are the gravity & compass not reliable to make 360 pictures?



Update:



Both gravity & compass have (x,y,z) components and I know both have some drawbacks:




  • gravity sensor is affected by acceleration (motion).

  • compass sensor is affected by metals and sometimes get locked is a direction. (move device in 8 path to free it).



Also:




  • gyroscope has little drift with time (may not affect in this case)



Anyway, are these enough reasons to drop phones without gyro from 360 photo capturing?


— user.dz | Sources

Answer

An accelerometer measures linear acceleration of movement, while a gyro on the other hand measures the angular rotational velocity. Basically the gyro uses the Earth's gravity to adds an additional dimension to the information supplied by the accelerometer, which measure s non-gravitational acceleration, by tracking rotation or twist.


— esQmo_ | Sources

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