A method for estimating human body temperature includes receiving, via a thermal camera, a thermal image captured of a real-world environment, the thermal image including thermal intensity values for each of a plurality of pixels of the thermal image. A position of a human face is identified within the thermal image, the human face corresponding to a human subject. An indication of a distance between the human subject and the thermal camera is received. Based on the distance, a distance correction factor is applied to one or more thermal intensity values of one or more pixels corresponding to the human face to give one or more distance-corrected thermal intensity values. Based on the one or more distance-corrected thermal intensity values an indication of a body temperature of the human subject is reported.

An optical assembly may include a thermal sensor and a temperature source between the optical assembly and a viewing area of the thermal sensor. The temperature source may provide a first reference temperature and a second reference temperature. A controller may cause the thermal sensor to sense thermal images of the temperature source at a first reference temperature and a second reference temperature and determine a contamination level of the optical assembly or a damage to the optical assembly based on the thermal images.

An alert system for a transformer includes a thermographic camera configured to capture thermal images of the transformer, a current sensor configured to generate a sensor signal indicating the current magnitude of a current outputted from the transformer, a storage configured to store a machine learning model, an alert device, and a processing unit configured to obtain image temperature values from the thermal images, obtain magnitude values from the sensor signal, obtain normal temperature values by using the machine learning model and the magnitude values, and instruct the alert device to deliver an alerting signal based on a result of comparison between the image temperature values and the normal temperature values.

The disclosure provides a digital dynamic infrared thermal imaging device, which includes a control module, a power supply module, an interface module, a buffer module, an infrared module, a display module and a variable potentiometer; the control module is respectively connected with the interface module, the buffer module and the infrared module, The display module and the variable potentiometer are electrically connected; the power module is respectively electrically connected with the control module, the interface module, the buffer module, the infrared module, the display module and the variable potentiometer. The utility model can dynamically adjust the temperature monitoring range, perform multi-dimensional temperature thermal imaging monitoring of objects, and expand the temperature monitoring range of low-cost and low-resolution infrared thermal imaging sensor.

A method of imaging a turbine engine component with a first surface and a second surface that is spaced from the first surface. The turbine engine component includes a plurality of holes with inlets formed in the second surface or interior that are fluidly coupled to outlets formed in the first surface or exterior. The method includes determining at least one fluid frequency, determining at least one sampling frequency, and pulsing fluid through at least a portion of the interior of turbine engine component while imaging the turbine engine component.

The present invention relates to an infrared thermometer (1) able to project the detected temperature directly on the surface (6a) of the body (2) to be measured. The determination of the ideal distance of the thermometer from the body, necessary for the correct detection of the temperature thereof, being visually identifiable by means of the relative position of luminous shapes (8a, 8b) projected on the body to be measured (6).

A method and a device determine the heating state of an optical element in an optical system, for example in a microlithographic projection exposure system. Electromagnetic radiation hits an incidence surface of the optical element during operation of the optical system. Using a calibration parameter, an average temperature at the incidence surface is estimated on the basis of a temperature measurement carried out via at least one temperature sensor located a distance from the incidence surface. The calibration parameter is selected differently in accordance with the illumination setting which is set in the optical system.

An alert system for a transformer includes a thermographic camera configured to capture thermal images of the transformer, a current sensor configured to generate a sensor signal indicating the current magnitude of a current outputted from the transformer, a storage configured to store a machine learning model, an alert device, and a processing unit configured to obtain image temperature values from the thermal images, obtain magnitude values from the sensor signal, obtain normal temperature values by using the machine learning model and the magnitude values, and instruct the alert device to deliver an alerting signal based on a result of comparison between the image temperature values and the normal temperature values.

A system for quantifying building envelope energy loss, including a camera assembly for acquiring a building image set of said building envelope reflecting actual energy loss from the building envelope, a comparison image generator for generating a comparison image set using the building image set, data relating to said building, and a predetermined energy loss standard, the comparison image set reflecting a standard energy loss profile of the building envelope that meets the predetermined energy loss standard, an image comparator for comparing the building image set to the comparison image set to determine at least one extent to which the actual energy loss exceeds to the energy loss profile.

Improved techniques for thermal imaging and gas detection are provided. In one example, a system includes a first set of filters configured to pass first filtered infrared radiation comprising a first range of thermal wavelengths associated with a background portion of a scene. The system also includes a second set of filters configured to pass second filtered infrared radiation comprising a second range of thermal wavelengths associated with a gas present in the scene. The first and second ranges are independent of each other. The system also includes a sensor array comprising adjacent infrared sensors configured to separately receive the first and second filtered infrared radiation to capture first and second thermal images respectively corresponding to the background portion and the gas. Additional systems and methods are also provided.