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Millimeter-wave imaging simulation is a novel technology developed by ThermoAnalytics to predict the resulting at-sensor radiometric solution.
Passive millimeter-wave scanners create images of the whole human body using ambient radiation in the millimeter wavelengths. The body, clothing, and objects; such as weapons, prostheses, and medical implants, have varying degrees of spectral emissivity, reflectivity, and transmissivity in the MMW bands. Millimeter-wave imaging simulation is a novel technology developed by ThermoAnalytics to predict the resulting at-sensor radiometric solution. This requires expert planning by our simulation engineers to define the transmissive and reflective properties of each layer of clothing, skin, and objects of interest.
Because MMW behavior follows the same first principles physics of other wavebands, our decades of experience predicting EO/IR radiometric signatures serves as the foundation for accurate passive MMW simulation. Often the goal is to determine what size of object of a given material can be detected under a range of clothing and other noise sources. Often the goal of our simulation effort is to train a machine learning system to flag MMW image frames that might show the presence of a weapon or drug contraband. Image outlier algorithms are an established technology that benefits from large volumes of training imagery produced under controlled conditions. MMW datasets are produced by ThermoAnalytics' unique combination of software coders, modeling experts, and scientists.
Millimeter-wave image datasets are complex to interpret, and thus we have developed special post-processing software to interpret spectral results. Detecting weapons with MMW requires accurate geometry for humans, clothing, holsters, and backgrounds across the full gamut of situational and ambient profiles, enabling machine learning-based identification of suspect images. By combining variations in conditions, our systems can yield a wider range of MMW training data renderings than is possible through physical acquisition in the field using human models and actual weapons.
Our passive millimeter-wave data sets would include both normal and abnormal renderings in ratios that support a balanced neural network.
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