Thermal calibration of an infrared image sensor
First Claim
Patent Images
1. A device, comprising:
- a support;
a first infrared image sensor on the support, the first image sensor configured to output a thermal image representing an area;
a first temperature sensor on the support adjacent to the first infrared image sensor, the first temperature sensor configured to output first temperature information corresponding to a subset of the area; and
a processor coupled to the first image sensor and the first temperature sensor and configured to calibrate the thermal image with the first temperature information to output a calibrated thermal image, the processor being on the support.
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Abstract
The present disclosure is directed to a system and method of capturing and calibrating thermal images to provide accurate temperature information regarding an imaged area. The system includes a thermal image sensor positioned next to a non-contact temperature sensor. The system identifies pixels of the thermal image that correspond to a field of view of the temperature sensor and generates a calibration value by analyzing the pixels and the temperature information. Then the thermal image is biased or calibrated using the calibration value.
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Citations
14 Claims
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1. A device, comprising:
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a support; a first infrared image sensor on the support, the first image sensor configured to output a thermal image representing an area; a first temperature sensor on the support adjacent to the first infrared image sensor, the first temperature sensor configured to output first temperature information corresponding to a subset of the area; and a processor coupled to the first image sensor and the first temperature sensor and configured to calibrate the thermal image with the first temperature information to output a calibrated thermal image, the processor being on the support. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device, comprising:
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a support; a first infrared image sensor on the support, the first image sensor configured to output a thermal image representing an area; a first temperature sensor on the support adjacent to the first infrared image sensor, the first temperature sensor configured to output first temperature information corresponding to a subset of the area, the first image sensor has a first field of view and the first temperature sensor has a second field of view that is smaller than the first field of view; and a processor coupled to the first image sensor and the first temperature sensor and configured to calibrate the thermal image with the first temperature information to output a calibrated thermal image. - View Dependent Claims (11, 12)
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13. A method, comprising:
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capturing a first image of an area with an infrared image sensor, the first image including a plurality of pixels; capturing temperature information of a first subset of the plurality of pixels of the first image with a temperature sensor; determining a calibration value from the temperature information and from the first subset of the plurality of pixels, the determining includes; identifying a central pixel of the first subset of pixels that corresponds to a center of a field of view of the temperature sensor and identifying an outer boundary of the field of view of the temperature sensor; and outputting a calibrated thermal image by calibrating the plurality of pixels of the first image with the calibration value. - View Dependent Claims (14)
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Specification