Camera Rotation Correction
摘要:
Devices, methods, and non-transitory computer readable media are disclosed herein to correct for unwanted rotation in an embedded camera module of an electronic device during field use. Various rotation calibration techniques are disclosed herein, including: a reference pixel pattern-based rotation calibration process; a magnetic field sensor-based rotation calibration process; and a gimbal lock-based rotation calibration process. In some embodiments, an initial rotation calibration angle for the camera module may be obtained during factory calibration and used by the electronic device's image signal processing (ISP) pipeline, so that all captured images are automatically rotation-corrected to compensate for any such rotation measured during factory calibration. In some embodiments, a rotation correction operation may be triggered in response to the electronic device detecting a reliability event (e.g., shock, fall, repair) during field use, which rotation correction operation may be used to update or overwrite the initial rotation calibration angle for the camera module.
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