Revealing Covered Handwriting Mark by Spectral Feature Matching Based on Infrared Spectral Imaging

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Revealing Covered Handwriting Mark by Spectral Feature Matching Based on Infrared Spectral Imaging
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Affiliation:Institute of Forensic Science，Shanghai Public Security Bureau;Shanghai Key Laboratory of Criminal Scene Evidence,Shanghai Public Security Bureau of Hongkou Branch,Shanghai Public Security Academy,Shanghai Key Laboratory of Criminal Scene Evidence，Institute of Forensic Science，Shanghai Public Security Bureau
Clc Number:DF794.2
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An optical method for revealing the handwriting mark covered by carbon ink is proposed. It can provide a technical support for the finding of cases. An infrared imaging spectrometer is used to collect a set of infrared spectral images of the handwriting mark covered by carbon ink. Through the analysis and processing of the collected infrared images by a spectral feature matching method, the handwriting mark covered by carbon ink is revealed clearly. The experimental result shows that the spectral feature matching method based on infrared spectral imaging is an effective optical method for revealing handwriting marks covered by carbon ink.

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cainengbin, peiyaoxiang, jiangmei, et al. Revealing Covered Handwriting Mark by Spectral Feature Matching Based on Infrared Spectral Imaging[J]. Infrared,2014,35(7):21~23

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