Application Notes - Forensic
Sometimes it’s tough to envision the applicability of ChemImage technology outside the laboratory or field environment. The following collection of application notes contain real-world discussions about the
FALCON II™ Raman Chemical Imaging and the
HSI Examiner™ Product Series.
Please use the tabs below to search application notes by line of business.
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Gunpowder Residue Visualization Using Hyperspectral Imaging (PDF 181 KB)
The clothing of a shooting victim may contain particulate matter known as gunpowder residue or propellant residue deposited in the area surround the bullet entry. The size of the residue's spread away from the bullet entry, along with the density of particles, can enable the approximation of the shooter's distance from the victim if the type and caliber of the weapon is known. |
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Hyperspectral Imaging as a Method of Colored Inkjet Printer Ink/Toner Comparisons (PDF 397 KB)
Due to the increasing availability of inkjet and toner-based printing systems to househols and businesses, Forensic Document Examiners (FDE) are likely to face an increase in requests to analyze samples of this nature.ChemImage instrumentation offers an advanced method for examining printed and/or copied documents. |
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Hyperspectral Imaging as a Method of Detecting and Visualizing Ignitable Liquid Residues
(PDF 257 KB)
The CONDORTM Hyperspectral Imaging System provides scientist with a way of visualizing ILR on fabric and carpeting, along with providing a fluorescence spectrum of the stain weeks after the sample liquid has been deposited onto the substrate.Hyperspectral imaging (HSI) detects aged IRL stains by visualizing the fluorescence of the dyes and markers left behind after the hydrocarbon portion of the liquid has evaporated. |
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Hyperspectral Imaging for the Enhancement of TLC Plate Analysis
(PDF 175 KB)
Hyperspectral imaging (HSI) combines digital imaging with conventional spectroscopy to give both images, as well as chemical information, about a sample. HSI collects images as a function wavelength across a manually selected range of collected data. |
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Imaging of Inks on Questioned Documents Using Fluorescence and Visible/Near-Infrared Reflectance Hyperspectral Imaging (PDF 884 KB)
The advantage of hyperspectral imaging lies in the information embedded within the image. Because the images are a series of snapshots collected as a function of wavelength, each pixel within the image has a fully resolved spectrum associated with it. |
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Latent Print Detection and Enhancement Through the Use of Hyperspectral Imaging (PDF 885 KB)
Using the CONDORTM Hyperspectral Imaging System, a hyperspectral image was generated by collecting digital images as a function of wavelength through the use of an LCTF. Images can be collected in reflection mode (broadband white light illumination) or in fluorescence mode (300-400 nm UV excitation) from 400-720 nm. |
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Hyperspectral Imaging Enables Straightforward Visualization of Bloodstains (PDF 825 KB)
ChemImage hyperspectral imaging technology presents forensic scientists with analysis techniques that result in advanced visualization of forensic samples without harming the integrity of the evidence. The CONDORTM Hyperspectral Imaging System provides the methods necessary to visualize bloodstains on dark fabrics that are otherwise imperceptible to the naked eye without damaging the sample. |
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