Provided here are: an infrared imaging element that receives infrared light to capture a thermal image; an element temperature sensor that detects a temperature of the infrared imaging element; an FPN memory that stores therein FPN data at each of the temperatures; a frame memory that saves a plurality of pieces of frame data composed of thermal images captured by the infrared imaging element in a fixed period of time; and an FPN data generation unit that, when an imaging target is determined not to have changed on the basis of the frame data, acquires from the FPN memory, the FPN data corresponding to the temperature of the infrared imaging element at which said frame data were obtained; and performs averaging processing between average values AF of the plurality of pieces of frame data and the thus-acquired FPN data, to thereby regenerate the FPN data in an updated manner.

Techniques for atmospheric absorption determination using embedded sensor data are provided. In one example, a system includes a housing. The system further includes a sensing device within the housing. The sensing device is configured to determine a humidity within the housing and a temperature within the housing. The system further includes a logic device. The logic device is configured to compensate the humidity and the temperature based on a location of the sensing device within the housing relative to heat sources within the housing. The logic device is further configured to determine a moisture value based on compensation of the humidity and the temperature. The logic device is further configured to determine an atmospheric absorption value based on the moisture value. Related devices and methods are also provided.

A thermal image sensor to acquire a relative temperature and a temperature sensor to acquire an absolute temperature are provided in a space; a reference point is set at a position different from a temperature sensor installation position; and an absolute temperature of the reference point is estimated from a measurement value of the temperature sensor, a vertical component of a distance from the temperature sensor installation position to the reference point, a vertical component of a distance from the upper surface to the lower surface of the space, and a temperature coefficient of the space. A correction value is determined from the absolute temperature and relative temperature of the reference point, and an absolute temperature distribution is generated from the relative temperature distribution and the correction value. This allows a non-contact measurement of the absolute temperature of a measurement target with a simple configuration and without installation location restriction.

A technique that enables accurate temperature measurement by detecting a relative positional deviation between a measurement object and a temperature sensor. A temperature measuring device, includes: a temperature sensor that measures a temperature of a measurement object in a non-contact manner with the measurement object; a light emitting element that emits light toward the measurement object; a light receiving element that receives reflected light of the light emitted from the light emitting element; and a control unit that detects a relative positional deviation between the measurement object and the temperature sensor based on a received light intensity by the light receiving element.

Systems, methods, and computer program products for thermal contrast determinations are provided. An example imaging system includes a first infrared (IR) imaging device that generates first IR image data of a field of view of the first IR imaging device and a computing device connected with the first IR imaging device. The computing device receives probe temperature data from a temperature probe indicative of an external environment of the imaging system and receives the first IR image data from the first IR imaging device. The computing device determines background temperature data based upon the first IR image data, determines gas temperature data based upon the probe temperature data, and determines a thermal contrast for each pixel based upon a comparison between the background temperature data and the gas temperature data. The computing device further determines a detection limit for each pixel as a function of thermal contrast.

A method for manufacturing a detection device includes steps of: producing thermal detectors distributed in a detection array and a compensation array using mineral sacrificial layers; producing an encapsulation structure comprising a thin opaque layer extending above the compensation array; partially removing the mineral sacrificial layers by chemical etching, so as to release the detection array and the compensation array, and to obtain the peripheral wall then formed of a non-etched portion of the mineral sacrificial layers and surrounding the compensation array, the thin opaque layer then being suspended above the compensation array and resting on the peripheral wall.

A method for manufacturing a detection device includes steps of: producing thermal detectors distributed in a detection array and a compensation array using mineral sacrificial layers; producing an encapsulation structure comprising a thin opaque layer extending above the compensation array; partially removing the mineral sacrificial layers by chemical etching, so as to release the detection array and the compensation array, and to obtain the peripheral wall then formed of a non-etched portion of the mineral sacrificial layers and surrounding the compensation array, the thin opaque layer then being suspended above the compensation array and resting on the peripheral wall.

Techniques are disclosed for providing vehicular radiometric calibration systems and methods. In one example, a method includes capturing, by an array of infrared sensors mounted on a vehicle, a thermal image of a scene during navigation of the vehicle and/or while the vehicle is stationary. The thermal image comprises a plurality of pixel values. Each infrared sensor of the array is associated with a respective one of the plurality of pixel values. The method further includes determining temperature data associated with a portion of the scene, where the portion is associated with a subset of the plurality of pixel values. The method further includes generating a correction value based on the thermal image and the temperature data. Related systems, vehicles, and devices are also provided.

Techniques are disclosed for providing vehicular radiometric calibration systems and methods. In one example, a method includes capturing, by an array of infrared sensors mounted on a vehicle, a thermal image of a scene during navigation of the vehicle and/or while the vehicle is stationary. The thermal image comprises a plurality of pixel values. Each infrared sensor of the array is associated with a respective one of the plurality of pixel values. The method further includes determining temperature data associated with a portion of the scene, where the portion is associated with a subset of the plurality of pixel values. The method further includes generating a correction value based on the thermal image and the temperature data. Related systems, vehicles, and devices are also provided.

Techniques for facilitating temperature compensation are provided. In one example, an infrared imaging system includes a focal plane array configured to capture radiation from a scene and generate image data based on the radiation. The focal plane array further captures radiation from an element associated with the infrared imaging system during capture of the radiation from the scene. The infrared imaging system further includes a temperature sensor configured to determine a temperature of the focal plane array. The infrared imaging system further includes a processing circuit configured to determine a temperature associated with the element based on the temperature of the focal plane array. The processing circuit is further configured to determine a temperature associated with an object in the scene based on the infrared image data, the temperature associated with the element, and the temperature of the focal plane array. Related devices and methods are also provided.