Imaging device employing optical motion sensor as gyroscope
First Claim
1. A motion sensor configured to control compensation for movement of an imaging device receiving light representative of a selected scene on an image plane, the motion sensor comprising:
- an array of photoelements configured to acquire successive images of features of an environment within a field of view of the motion sensor;
including a first image of features and a second image of features acquired at a time interval after the first image, the first and second images including common features, and a controller configured to receive and correlate the first and second images to detect movement of the imaging device about a first and a second axis during the time interval by detecting differences in locations of the common features relative to the array of photoelements, and to provide first and second compensation signals based on the correlation to control opto-mechanical adjustments to counter detected movement of the imaging device about the first and second axes so as to maintain a substantially fixed relationship between the selected scene and the imaging plane.
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Accused Products
Abstract
A motion sensor configured to control compensation for movement of an imaging device receiving light representative of a selected scene on an image plane. The motion sensor includes and array of photoelements and a controller. The array of photoelements is configured to acquire successive images of features of an environment within a field of view of the motion sensor; including a first image of features and a second image of features acquired at a time interval after the first image, the first and second images including common features. The controller is configured to receive and correlate the first and second images to detect movement of the imaging device about a first and a second axis during the time interval by detecting differences in locations of the common features relative to the array of photoelements, and to provide first and second compensation signals based on the correlation to control opto-mechanical adjustments to counter detected movement of the imaging device about the first and second axes so as to maintain a substantially fixed relationship between the selected scene and the imaging plane.
255 Citations
24 Claims
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1. A motion sensor configured to control compensation for movement of an imaging device receiving light representative of a selected scene on an image plane, the motion sensor comprising:
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an array of photoelements configured to acquire successive images of features of an environment within a field of view of the motion sensor;
including a first image of features and a second image of features acquired at a time interval after the first image, the first and second images including common features, anda controller configured to receive and correlate the first and second images to detect movement of the imaging device about a first and a second axis during the time interval by detecting differences in locations of the common features relative to the array of photoelements, and to provide first and second compensation signals based on the correlation to control opto-mechanical adjustments to counter detected movement of the imaging device about the first and second axes so as to maintain a substantially fixed relationship between the selected scene and the imaging plane. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 18)
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6. An imaging device comprising:
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a stage moveable along a first and a second axis;
an imaging plane positioned on the stage and configured to receive light representative of a selected scene; and
a motion sensor comprising;
an array of photoelements positioned on the stage and configured to acquire successive images of features of an environment within a field of view of the motion sensor;
including a first image of features and a second image of features acquired at a time interval after the first image, the first and second images including common features, anda controller configured to receive and correlate the first and second images to detect movement of the imaging device about the first and second axes during the time interval by detecting differences in locations of the common features relative to the array of photoelements, and to provide first and second compensation signals based on the correlation to control movement of the stage to counter detected movement of the imaging device about the first and second axes so as to maintain a substantially fixed relationship between the selected scene and the imaging plane.
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15. An imaging device comprising:
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an imaging plane configured to receive light representative of a selected scene;
a lens element positioned between the imaging plane and the selected scene and moveable along a first and a second axis;
a motion sensor comprising;
an array of photoelements positioned on the stage and configured to acquire successive images of features of an environment within a field of view of the motion sensor;
including a first image of features and a second image of features acquired at a time interval after the first image, the first and second images including common features, anda controller configured to receive and correlate the first and second images to detect movement of the imaging device about the first and second axes during the time interval by detecting differences in locations of the common features relative to the array of photoelements, and to provide first and second compensation signals based on the correlation to control movement of the lens element to counter detected movement of the imaging device about the first and second axes so as to maintain a substantially fixed relationship between the selected scene and the imaging plane. - View Dependent Claims (16, 17)
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19. A method of compensating for movement of an imaging device receiving light representative of a selected scene on an image plane, the method comprising:
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acquiring successive images of features of an environment with an image sensor, including a first image of features and a second image of features acquired after at a time interval after the first image, the first and second image including common features;
correlating the first and second images to detect movement of the imaging device about a first and a second axis by detecting differences in locations of the common features relative to the image sensor;
controlling opto-mechanical adjustments based on the correlation to counter detected movement of the imaging device so as to maintain a substantially fixed relationship between the selected scene and the imaging plane. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification