Patent ID: 8189058

Claim:
A digital camera having an electronic spirit level for capturing images aligned with the horizon, comprising: a detector which determines static and dynamic accelerations, said detector comprising a first sensor sensitive to acceleration in a first direction, said first sensor providing a first output signal in response to acceleration in the first direction, a second sensor sensitive to acceleration in a second direction, said second sensor providing a second output signal in response to acceleration in the second direction, the second direction being different from the first direction, and a first processor adapted to process the first and second output signals, said processor including a first filter adapted to low-pass filter the first and second output signals so as to obtain updated information relating to static accelerations; and a second processor adapted to correlate said updated information relating to static accelerations with stored information relating to static accelerations, and to generate one or more correlation signals indicative of a relative difference between the updated and stored information; and an indicator providing an output based on said one or more correlation signals, wherein the stored information relating to static accelerations comprises a pre-set roll value corresponding to a horizontal orientation of the digital camera.