A study to visualize and determine the sequencing of intersecting ink lines

Özbek, Nil; Braz, André; Lopez‐López, María; García-Ruiz, Carmen

doi:10.1016/j.forsciint.2013.10.026

Cited by 24 publications

(23 citation statements)

References 8 publications

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“…SIMPLISMA [27]. In this work, we used the algorithm implemented in the software available at the Multivariate Curve Resolution Homepage [28]. When the initial guess of the pure spectra in the sample are obtained, it is possible to use them as input to the MCR-ALS process.…”

Section: Hyperspectral Images and Chemometric Toolsmentioning

confidence: 99%

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Near infrared hyperspectral imaging for forensic analysis of document forgery

Silva

Pimentel

Honorato

et al. 2014

Analyst

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Section: Hyperspectral Images and Chemometric Toolsmentioning

confidence: 99%

“…All chemometric treatments were performed using Matlab® R2010a. MCR-ALS was carried out by using the interface described in [26] and available at [28].…”

Section: Data Treatmentmentioning

confidence: 99%

Near infrared hyperspectral imaging for forensic analysis of document forgery

Silva

Pimentel

Honorato

et al. 2014

Analyst

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“…The problem of determining the sequence of intersecting strokes always considered a great aim for forensic document examiners [1][2][3][4][5]. An investigation of the sequence of intersecting strokes is a sufficient method for detecting the authentication and validation of the documents.…”

Section: Introductionmentioning

confidence: 99%

Physical Distinguishable of Heterogeneous Overlapping Resulting from Stamp-pad and Laser Printing Inks

et al. 2019

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D ETECTING the arrangement of intersecting stamp-pad ink and the toner of laser printing strokes is an excellent method of examining the documents originality. In this study, different six brands of stamp-pad inks, toner of five laser printers of various brands and models, three types of paper surfaces, two kinds of seal materials and three methods of seal manufactures were utilized to produce the samples of heterogeneous intersecting strokes. A combination of the microscopic method as a digital microscope and analytical instrumental technique as Raman spectroscopy were performed to determine the arrangement of intersecting strokes. The digital microscope succeeds in the detection of the arrangement of intersecting strokes of some stamp-pad inks and fails in detection the others depending on their brands and colors through notation four physical properties at intersection point the specular reflection, the ink and toner glosses, gaps and spreading. The Raman spectroscopy determined the ink or toner stamped or printed later by comparison the spectra of pure ink, toner, and their intersections and succeeds in detection all samples through the spectral data such as peak location and peak intensity. The combination of a digital microscope and Raman spectroscopy which applied successfully discriminates the arrangement of intersecting strokes of toner and all brands of stamp-pad inks regardless of their brands and color.

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“…Nevertheless, the distribution resulting from the crossing between two ink lines has never been visualized per se. A former study reported by our research group [22] has shown cross-sections of painted overlapping layers of inks for the purpose of visualizing and understanding a process that is very similar to real crossing ink lines. Three different configurations were observed: the two ink layers formed a double layer distinctly on top of each other and the ink layer at the top was dispersed in the ink layer at the bottom, forming either a partial or a complete mixture.…”

Section: Introductionmentioning

confidence: 99%

“…In that study [22], red and blue overlapping layers of painted ink of 1 cm 2 were used to facilitate microscopic visualization. Although this might not entirely reflect the size of real ink crossings, nor should be reproducible to crossings involving other ink colours, the authors concluded that the paper and the writing pressure showed no significant influence on the inks distribution and that the type of ink as well as the drying times were very important factors that should be studied further with real crossing ink lines.…”

Section: Introductionmentioning

confidence: 99%