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Powder retection with T-ray imaging

机译:用T射线成像进行粉末检测

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摘要

Pulsed THz imaging systems have a number of potential advantages in inspection applications. They provide amplitude and phase information across a broad spectral range in the far-infrared, and many common packaging materials are relatively transparent in this frequency range. We use T-ray imaging to allow the identification of different powdered materials concealed inside envelopes. Using the terahertz spectral information we show that different powders may be uniquely identified. Different thicknesses of the powders are imaged to investigate the influence of scattering on the measured THz pulses and the classification model is extended to allow it to identify different materials independent of the material thickness.
机译:脉冲太赫兹成像系统在检查应用中具有许多潜在优势。它们在远红外的宽光谱范围内提供幅度和相位信息,许多常见的包装材料在该频率范围内相对透明。我们使用T射线成像技术来识别隐藏在信封内的不同粉末材料。使用太赫兹光谱信息,我们表明可以唯一地识别不同的粉末。对不同厚度的粉末成像,以研究散射对测得的太赫兹脉冲的影响,并扩展了分类模型,使其可以识别与材料厚度无关的不同材料。

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