Wide area imaging system and method
First Claim
1. A wide area imaging system for performing surveillance of an area, comprising a sensor that uses a rotational step/dwell/image capture sequence to capture images of the area under surveillance, wherein the sensor provides image capture of a predetermined image field at a predetermined image capture rate, wherein the said rotational step and dwell motion is by closed-loop motion control, wherein the said step/dwell/image capture sequence is controlled by a processor to synchronize motion in a direction of rotation of the system and image capture to the image capture rate of the sensor, wherein the predetermined image field advances in the direction of rotation as the system rotates, and wherein the captured images are used to produce a wide-area image of the area under surveillance.
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Abstract
The present invention provides a new and useful paradigm in wide area imaging, in which wide area imaging is provided by a step/dwell/image capture process and system to capture images and produce from the captured images a wide area image. The image capture is by a sensor that has a predetermined image field and provides image capture at a predetermined frame capture rate, and by a motorized step and dwell sequence of the sensor, where image capture is during a dwell, and the step and dwell sequence of the sensor is synchronized with the image capture rate of the sensor.
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Citations
26 Claims
- 1. A wide area imaging system for performing surveillance of an area, comprising a sensor that uses a rotational step/dwell/image capture sequence to capture images of the area under surveillance, wherein the sensor provides image capture of a predetermined image field at a predetermined image capture rate, wherein the said rotational step and dwell motion is by closed-loop motion control, wherein the said step/dwell/image capture sequence is controlled by a processor to synchronize motion in a direction of rotation of the system and image capture to the image capture rate of the sensor, wherein the predetermined image field advances in the direction of rotation as the system rotates, and wherein the captured images are used to produce a wide-area image of the area under surveillance.
- 22. A wide area imaging method for performing surveillance of an area, comprising operating a sensor that uses a rotational step/dwell/image capture sequence to capture images of the area under surveillance, wherein the sensor provides image capture of a predetermined image field at a predetermined image capture rate, wherein the said rotational step and dwell motion is by closed-loop motion control, wherein the said step/dwell/image capture sequence is controlled by a processor to synchronize motion in a direction of rotation of the system and image capture to the image capture rate of the sensor, wherein the predetermined image field advances in the direction of rotation as the system rotates, and wherein the captured images are used to produce a wide-area image of the area under surveillance.
Specification