High-Accuracy Calibration Method of a Thermal Camera Using Two Reference Blackbodies.

Body temperature is one of the most important physiological parameters of a human being used to assess his basic vital functions. In medical practice, various types of measuring instruments are used to measure temperature, such as liquid thermometers, electronic thermometers, non-contact ear thermometers, and non-contact forehead thermometers. Such body temperature measurement techniques require the connection of appropriate sensors to a person, and non-contact thermometers operate over short distances and force a specific position of the person during the measurement.

Fast and accurate polarimetric calibration of infrared imaging polarimetric sensors.

Polarimetric imaging cameras require polarimetric calibration to accurately estimate the incident Stokes vector of incoming radiation. This calibration establishes a relationship between changes in the sensor signal and incident Stokes vector. In the standard procedure, an imager is presented with a set of input Stokes vectors with two different radiance values.

Method of signal processing in a time-division LWIR image polarimetric sensor.

We report on the method of signal processing in a passive long-wave infrared (LWIR) image polarimetric sensor. The method enables the detection of natural and manmade targets. It includes the error related to the rotation of the polarizing element during an image reading as well as permits the polarimeter operation without a classical phase synchronization loop.

Mueller matrix of imaging polarimeter's optical system-comparison of simulation results obtained using Zemax and MATLAB software with experimental data.

A procedure for simulating the Mueller matrix of an optical system across the field of view of a long-wavelength infrared (LWIR) imaging polarimeter is presented in this paper. The procedure is based on a ray-tracing model and uses off-the-shelf software and custom add-on procedures written in MATLAB. A simulation was conducted to obtain polarization ray tracing across the entire surface of the focal-plane array for a set of wavelengths within the LWIR (8-14 µm) window and within the instrument's field of view of 7.