Thermal calibration of an infrared image sensor
AssigneeMicaSense, Inc.
InventorsGabriel Torres, Justin McAllister, Jefferson McBride
Life of this patent
Estimating the term…
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.
Claims14
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.
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, 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.
A method, comprising:
- 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.
Dependencies are inferred from the claim text.