CHEN Wei-na, YANG Chun-song, YANG Xu. Forensic Differentiation of Copy Paper by Image Processing Techniques of Video Fluorescence Spectroscopy[J]. Chinese Journal of Luminescence, 2018,39(5): 713-722
CHEN Wei-na, YANG Chun-song, YANG Xu. Forensic Differentiation of Copy Paper by Image Processing Techniques of Video Fluorescence Spectroscopy[J]. Chinese Journal of Luminescence, 2018,39(5): 713-722 DOI: 10.3788/fgxb20183905.0713.
Forensic Differentiation of Copy Paper by Image Processing Techniques of Video Fluorescence Spectroscopy
In order to establish a method to examine copy paper in different brand
model by image processing techniques of video fluorescence spectroscopy (VFS) and inspect and identify copy paper in forensic science
20 kinds of copy paper in different brands and models were collected
the video spectral comparator (VSC6000) was used to analyze these papers to obtain the fluorescence image of the samples. Combining with the image processing technology
the morphology and the intensity of the fluorescence were analysised visually and quantitatively. According to the morphological features in the VFS obtained by UV-365 nm and powerful light source (400-570 nm) of the samples
the papers can be identified preliminarily. The visual analysis of the samples can be realized by drawing the contour map of video fluorescence image
and the fluorescence image brightness value
L
can be used to quantify the samples. The results prove that the image processing techniques of VFS can discriminate the copy paper precisely and effectively
which can be used to examine the document material
provide a practical method for the differentiation
comparison
identification in forensic science.
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references
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