29 April 2016 New algorithm for the passive THz image quality enhancement
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We propose a new approach for THz image quality enhancing using correlation function between the image under consideration and a standard image. The standard image moves in two directions along a image under analysis. As a result, 2 D correlation function is obtained. Multiplying this function by color number belonging to a grey scale, we restore the image under the analysis. This allows to suppress a noise on a new image. This method allows to see the person clothes details that it means multi-times increasing of the passive THz camera temperature resolution. We discuss a choice of standard image characteristics for an achievement of correlation function for high contrast. Other feature of our approach arises from a possibility of a person image coming to the THz camera by using a computer processing of the image only. It means that we can “decrease” a distance between a person and the passive THz camera. This algorithm is very convenient for using and has a high performance.
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Vyacheslav A. Trofimov, Vyacheslav A. Trofimov, Vladislav V. Trofimov, Vladislav V. Trofimov, } "New algorithm for the passive THz image quality enhancement", Proc. SPIE 9856, Terahertz Physics, Devices, and Systems X: Advanced Applications in Industry and Defense, 98560M (29 April 2016); doi: 10.1117/12.2225169; https://doi.org/10.1117/12.2225169

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