DIGITAL CAMERA WITH INTEGRATED ACCELEROMETERS
First Claim
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1. A method of correcting sideways slant in an image recorded by a digital camera, said method comprising:
- providing a first accelerometer integrated on a monolithic chip in the digital camera, the first accelerometer being sensitive to acceleration in a first direction lying in an imaging plane of the digital camera, said first accelerometer being adapted to provide a first output signal in response to acceleration in the first direction;
providing a second accelerometer integrated on a monolithic chip in the digital camera, the second accelerometer being sensitive to acceleration in a second direction lying in an imaging plane of the digital camera and being different from the first direction, said second accelerometer being adapted to provide a second output signal in response to acceleration in the second direction;
low-pass filtering the first and second output signals to obtain information relating to static accelerations;
using the information relating to static accelerations to identify a roll angle of the digital camera when the image was recorded; and
correcting sideways slant in the recorded image in accordance with the identified roll angle to reduce the influence of roll away from a vertical orientation or a horizontal orientation.
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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.
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Citations
19 Claims
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1. A method of correcting sideways slant in an image recorded by a digital camera, said method comprising:
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providing a first accelerometer integrated on a monolithic chip in the digital camera, the first accelerometer being sensitive to acceleration in a first direction lying in an imaging plane of the digital camera, said first accelerometer being adapted to provide a first output signal in response to acceleration in the first direction; providing a second accelerometer integrated on a monolithic chip in the digital camera, the second accelerometer being sensitive to acceleration in a second direction lying in an imaging plane of the digital camera and being different from the first direction, said second accelerometer being adapted to provide a second output signal in response to acceleration in the second direction; low-pass filtering the first and second output signals to obtain information relating to static accelerations; using the information relating to static accelerations to identify a roll angle of the digital camera when the image was recorded; and correcting sideways slant in the recorded image in accordance with the identified roll angle to reduce the influence of roll away from a vertical orientation or a horizontal orientation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. Post-processing software for correction of sideways slant in an image recorded by a digital camera and being configured to perform the following when executed by a processor:
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obtaining a first output signal in response to acceleration in a first direction lying in an imaging plane of the digital camera; obtaining a second output signal in response to acceleration in a second direction lying in an imaging plane of a digital camera and being different from the first direction; low-pass filtering the first and second output signals to obtain information relating to static accelerations; using the information relating to static accelerations to identify a roll angle of the digital camera when the image was recorded; and correcting sideways slant in the image in accordance with the identified roll angle to reduce the influence of roll away from a vertical orientation or a horizontal orientation. - View Dependent Claims (11)
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12. A digital camera providing correction of sideways slant of images, the digital camera comprising:
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an image sensor a first accelerometer integrated on a monolithic chip in the digital camera, the first accelerometer being sensitive to acceleration in a first direction lying in a plane of the image sensor, said first accelerometer being adapted to provide a first output signal in response to acceleration in the first direction; a second accelerometer integrated on a monolithic chip in the digital camera, the second accelerometer being sensitive to acceleration in a second direction lying in a plane of the image sensor and being different from the first direction, said second accelerometer being adapted to provide a second output signal in response to acceleration in the second direction; a processor being adapted to process the first and second output signals, said processor comprising a low-pass filter for filtering the first and second output signals to obtain information relating to static accelerations and to use the information relating to static accelerations to identify a roll angle of the digital camera; and means for correcting sideways slant in images in accordance with the identified roll angle to reduce the influence of roll away from a vertical orientation or a horizontal orientation. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of correcting sideways slant during recording of images using a digital camera, comprising:
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providing a first accelerometer integrated on a monolithic chip in the digital camera, the first accelerometer being sensitive to acceleration in a first direction lying in an imaging plane of the digital camera, said first accelerometer being adapted to provide a first output signal in response to acceleration in the first direction; providing a second accelerometer integrated on a monolithic chip in the digital camera, the second accelerometer being sensitive to acceleration in a second direction lying in an imaging plane of the digital camera and being different from the first direction, said second accelerometer being adapted to provide a second output signal in response to acceleration in the second direction; low-pass filtering the first and second output signals to obtain information relating to static accelerations; using the information relating to static accelerations to identify a roll angle of the digital camera during recording of the image; and correcting sideways slant in the recording of the image in accordance with the identified roll angle to reduce the influence of roll away from a vertical orientation or a horizontal orientation. - View Dependent Claims (19)
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Specification