Selective image correction for infrared imaging devices
First Claim
1. A method comprising:
- receiving one or more sensor signals associated with motion of a vehicle;
processing the sensor signals to determine relative motion of an infrared imaging device with respect to a scene imaged by the infrared imaging device, wherein the infrared imaging device is fixed relative to the vehicle; and
selectively performing an infrared image correction process based on the relative motion, wherein the infrared image correction process comprises;
receiving a blurred infrared image from the infrared imaging device, wherein the blurred infrared image comprises blurred infrared image data from the scene and noise introduced by the infrared imaging device;
processing the blurred infrared image to determine a plurality of non-uniformity correction (NUC) terms to reduce a portion of the noise; and
applying the NUC terms to unblurred infrared images captured by the infrared imaging device.
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Abstract
Techniques are disclosed for systems and methods using small form factor infrared imaging devices to image scenes in proximity to a vehicle. An imaging system may include one or more infrared imaging devices, a processor, a memory, a display, a communication module, and modules to interface with a user, sensors, and/or a vehicle. Infrared imaging devices may be positioned in proximity to, mounted on, installed in, or otherwise fixed relative to a vehicle. Infrared imaging devices may be configured to capture infrared images of scenes in proximity to a vehicle. Various infrared image analytics and processing may be performed on captured infrared images to correct and/or calibrate the infrared images. Monitoring information, notifications, and/or control signals may be generated based on the corrected infrared images and then presented to a user and/or a monitoring and notification system, and/or used to control aspects of the vehicle.
193 Citations
27 Claims
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1. A method comprising:
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receiving one or more sensor signals associated with motion of a vehicle; processing the sensor signals to determine relative motion of an infrared imaging device with respect to a scene imaged by the infrared imaging device, wherein the infrared imaging device is fixed relative to the vehicle; and selectively performing an infrared image correction process based on the relative motion, wherein the infrared image correction process comprises; receiving a blurred infrared image from the infrared imaging device, wherein the blurred infrared image comprises blurred infrared image data from the scene and noise introduced by the infrared imaging device; processing the blurred infrared image to determine a plurality of non-uniformity correction (NUC) terms to reduce a portion of the noise; and applying the NUC terms to unblurred infrared images captured by the infrared imaging device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system comprising:
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an infrared imaging device fixed relative to a vehicle and adapted to capture infrared images of a scene; and a processor adapted to execute instructions to; receive one or more sensor signals associated with motion of the vehicle, process the sensor signals to determine motion of the infrared imaging device with respect to the scene, and selectively perform an infrared image correction process based on the relative motion, wherein; the relative motion comprises a rotation of the infrared imaging device relative to the scene, the rotation is in a plane of a focal plane array (FPA) of the infrared imaging device, and the instructions to perform the infrared image correction process are adapted to cause the processor to determine spatial row or column fixed pattern noise (FPN) terms to correct a portion of FPN in infrared images captured by the infrared imaging device. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A system comprising:
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an infrared imaging device fixed relative to a vehicle and adapted to capture infrared images of a scene; and a processor adapted to execute instructions to; receive one or more sensor signals associated with motion of the vehicle, process the sensor signals to determine relative motion of the infrared imaging device with respect to the scene, and selectively perform an infrared image correction process based on the relative motion, wherein; the infrared imaging device comprises a focal plane array (FPA) configured to capture the infrared images of the scene, and the FPA comprises an array of microbolometers adapted to receive a bias voltage selected from a range of approximately 0.2 volts to approximately 0.7 volts. - View Dependent Claims (26, 27)
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Specification