Digital camera with integrated accelerometers
First Claim
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1. 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 comprisinga 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, anda 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.
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Abstract
A digital camera system has integrated accelerometers for determining static and dynamic accelerations of the digital cameral system. Data relating to static and dynamic accelerations are stored with recorded image data for further processing, such as for correcting image data for roll, pitch and vibrations and for displaying recorded images with a predetermined orientation using information about, e.g., roll. Data may also be used on-the-fly for smear suppression caused by vibrations.
35 Citations
12 Claims
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1. A digital camera having an electronic spirit level for capturing images aligned with the horizon, comprising:
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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. - View Dependent Claims (2, 3, 4)
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5. A method of guiding a user to a stored orientation of a digital camera, said method comprising:
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low-pass filtering first and second output signals of respective first and second accelerometers, the first and second accelerometers sensitive to accelerations in respective first and second directions to identify angles of roll, the second direction being different from the first direction; providing present orientation information for the digital camera, said orientation information identifying a roll angle and being provided by the low-pass filtered first and second output signals of the respect first and second accelerometers; retrieving stored orientation information for the digital camera relating to static accelerations comprising a pre-set roll value corresponding to a horizontal orientation of the digital camera; and indicating a difference between roll angles in the present and stored orientation information to the user using an electronic spirit level of the digital camera to capture images aligned with the horizon. - View Dependent Claims (6, 7, 8, 9)
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10. A digital camera having an electronic spirit level for capturing images aligned with the horizon, comprising:
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first and second accelerometers sensitive to accelerations in first and second directions to provide first and second signals that are continuous functions of accelerations in the first and second directions, wherein the first direction is different than the second direction; a low-pass filter configured to low-pass filter the first and second signals so as to obtain first and second low-pass filtered signals; a processor configured to generate one or more correlation signals correlating with a difference between stored first and second signals and presently received first and second low-pass filtered signals; and an indicator providing an output based on the generated one or more correlation signals, wherein the stored first and second signals comprise a pre-set roll value corresponding to a horizontal orientation of the digital camera. - View Dependent Claims (11, 12)
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Specification