DIGITAL CAMERA WITH INTEGRATED ACCELEROMETERS
First Claim
Patent Images
1. A method of processing image data, said method comprising:
- providing image data, said image data being stored in memory;
determining information relating to static accelerations, said determining including providing a first sensor sensitive to acceleration in a first direction, said first sensor being adapted to provide a first output signal in response to acceleration in the first direction, andproviding a second sensor sensitive to acceleration in a second direction, said second sensor being adapted to provide a second output signal in response to acceleration in the second direction, the second direction being different from the first direction;
low-pass filtering the first and second output signals so as to obtain information relating to static accelerations, said information being recorded and stored with the image data; and
correcting the image data in accordance with the information relating to static accelerations so as to correct the image data and reduce the influence of roll and pitch.
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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
32 Claims
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1. A method of processing image data, said method comprising:
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providing image data, said image data being stored in memory; determining information relating to static accelerations, said determining including providing a first sensor sensitive to acceleration in a first direction, said first sensor being adapted to provide a first output signal in response to acceleration in the first direction, and providing a second sensor sensitive to acceleration in a second direction, said second sensor being adapted to provide a second output signal in response to acceleration in the second direction, the second direction being different from the first direction; low-pass filtering the first and second output signals so as to obtain information relating to static accelerations, said information being recorded and stored with the image data; and correcting the image data in accordance with the information relating to static accelerations so as to correct the image data and reduce the influence of roll and pitch. - View Dependent Claims (2)
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3. A method of displaying an image recorded by a digital camera system with a predetermined orientation, said method comprising:
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providing information identifying a roll angle of the recorded image, said information being provided by first and second accelerometers sensitive to accelerations in respective first and second directions to identify angles of roll corresponding to vertical and horizontal orientations and other angles of roll, the second direction being different from the first direction; and using the provided information to determine an orientation by which the recorded image is to be displayed and/or stored, the orientation comprises portrait and landscape orientations, where said determining the orientation by which the recorded image is to be displayed and/or stored comprises using hysteresis on the roll angle identification to prevent unintended switching between the portrait orientation and the landscape orientation. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of correcting image data during recording of an image of an object, said method comprising:
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recording image data of the object by projecting the object onto an array of light sensitive elements, said recorded image data being generated as electrical charges in the array of light sensitive elements; providing information relating to time dependent movements of the array of light sensitive elements relative to the object; and correcting the recorded image data in accordance with the provided information relating to movements of the array of light sensitive elements relative to the object by moving charges in the array of light sensitive elements so as to correct for relative movements between the array of light sensitive elements and the image of the object.
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14. A method of correcting image data during recording of an image of an object, said method comprising:
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recording image data of the object by projecting an image of the object onto an array of light sensitive elements; providing information relating to time dependent movements of the array of light sensitive elements relative to the image of the object; and correcting the recorded image data in accordance with the provided information relating to movements of the array of light sensitive elements relative to the image of the object by counter moving the array of light sensitive elements so as to compensate for the time dependent movements.
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15. A digital camera system comprising:
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a detector which determines static and dynamic accelerations, said detector including 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, and 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; a first processor being adapted to process the first and second output signals, said processor including a first filter being adapted to low-pass filter the first and second output signals so as to obtain updated information relating to static accelerations; a second processor being adapted to correlate said updated information relating to static accelerations with predetermined information relating to static accelerations, and to generate one or more correlation signals indicative of a relative difference between the updated and predetermined information; and an indicator providing an output based on said one or more correlation signals. - View Dependent Claims (16)
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17. A method of displaying an image recorded by a digital camera system with a predetermined orientation, said method comprising:
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providing first and second micro-mechanical accelerometers integrated on a monolithic chip in the digital camera system, the accelerometers being sensitive to accelerations in first and second directions to provide respective outputs that are continuous functions of accelerations in the first and second directions, wherein the first direction is different than the second direction; determining, from the outputs of the accelerometers, a roll angle of the camera when the image was recorded; and using the determined roll angle to determine an orientation by which the recorded image is to be displayed and/or stored by use of hysteresis on the roll angle determination to prevent unintended switching between the portrait orientation and the landscape orientation. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method of recording images using a camera system, comprising:
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detecting a roll angle during recording, responsive to accelerations of the camera system in first and second directions to identify angles of roll corresponding to vertical and horizontal orientations and other angles of roll, the second direction being perpendicular with respect to the first direction; and using the detected roll angle to determine an orientation by which the recorded image is to be displayed and/or stored by use of hysteresis on the roll angle detection to prevent unintended switching between the portrait orientation and the landscape orientation. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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Specification