Method and apparatus for image orientation indication and correction

摘要

Tilt imparted to video images captured by a handheld electronic communication device is identified and corrected by the disclosed method and apparatus for image orientation. The handheld device includes image capturing capability and an orientation sensor, which provides a signal representative of orientation relative to gravity to calculate an angle of rotation for the captured images suitable to compensate a difference between the orientation of the handheld device and the orientation relative to gravity. The handheld device also includes a receiver wherein the angle of rotation is recovered and used to determine the changes needed substantially eliminate the difference between the orientation of the captured images and the orientation relative to gravity.