| NCJ Number: |
218835  |
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| Title: |
Advances in Document Examination: The Video Spectral Comparator 2000 |
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| Journal: |
Forensic Science Communications Volume:1 Issue:3 Dated:October 1999 Pages:1-6 |
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| Author(s): |
Gregg M. Mokrzycki |
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| Date Published: |
October 1999 |
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| Page Count: |
6 |
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| Document: |
HTML |
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| Type: |
Report (Technical) |
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| Format: |
Document (Online) |
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| Language: |
English |
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| Country: |
United States of America |
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| Annotation: |
This paper describes and critiques the features and uses of the Video Spectral Comparator 2000 (VSC2000; Foster and Freeman, Worcestershire, United Kingdom), the FBI Laboratory's latest tool for the analysis of questioned documents.
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| Abstract: |
The VSC2000 is an imaging device that allows a document examiner to analyze inks, visualize hidden security features, and reveal alterations in a document. The VSC2000's main components are a desktop computer that uses software provided by the manufacturer and an imaging device that includes a color charge coupled device (CCD) video camera, a black-and-white CCD video camera, excitation/barrier filters, and various radiant energy sources. Among the computer's standard features are a 21-inch monitor and a readable/writable CD-ROM for storing the bitmap image files. Using variable light sources in conducting document examinations is not new; however, the VSC2000 allows the user to select filter and light combinations at the touch of a button and capture desired images faster than with conventional photography. The VSC2000 is better than earlier versions, because it has complete computer-based operations and comes with standard improved filters and light sources. This paper offers one suggestion for improving future models. The incident light source currently relies on a mirror in order to reflect light from a stationary light. A flexible, direct light source would be better. 5 references
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| Main Term(s): |
Criminology |
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| Index Term(s): |
Crime laboratory equipment; Document analysis; Forensic sciences; Investigative techniques; Specifications |
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| Note: |
Downloaded June 13, 2007. |
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To cite this abstract, use the following link:
http://www.ncjrs.gov/App/publications/abstract.aspx?ID=240577 |
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