The Video Spectral Comparator (VSC) is a UV-Vis-IR imaging spectral device designed for forensic examination and authentication of questioned documents. It was developed by Foster and Freeman. A basic VSC unit consists of a high-sensitivity camera, different light sources, a software/viewing interface, and a positioning stage.

In 2008 the company released the VSC6000 intelligent Video Spectral Comparator, soon to be followed by the VSC40 and VSC400 workstations. As camera technology entered the age of HD, foster+freeman responded with the upgraded VSC6000/HS and VSC40HD workstations.

VSC, the premier range of imaging systems for the forensic-level examination of questioned documents. Quickly and easily detect and authenticate covert security features that cannot otherwise be discerned by the naked eye. Reveal information about different paper and ink types and the latest generation of embedded microscopic security taggants.

2024年1月7日 · The Video Spectral Comparator (VSC) is a digital imaging instrument that uses different light sources and filters to examine documents under various wavelengths of electromagnetic radiation. It allows examiners to non-destructively analyze security features, inks, and detect alterations by comparing a document's response to different light.

VSC is a comprehensive digital imaging system combining high-resolution optics and multi-spectral illumination with a great software package that involves tools for image enhancement and decoding digitally encrypted data. Access to optional reference databases enables comparisons with authentic security documents. KEY SOFTWARE FEATURES INCLUDE:

2017年1月16日 · The Video Spectral Comparator 6000 (VSC) is a machine by Foster + Freeman. The machine utilizes many functions and different light sources to examine documents, and is usually used as a forensic tool to check the validity of valuable documents.

VSC@6000/HS Microscope options for taggant examination Taggants are being increasingly used on security documents such as passports, visas, identity cards and driving licences. Due to their microscopic size, 25 to 300 microns, taggants are readily included in inks, lacquers,

VSC6000超级文检工作站是基于PC机的文件检验系统，其功能强大，可检验各种类型的文件。 它应用于对文件伪造或篡改的辅助侦查，可显示文件的多种安全特征。 操作时，将检材置于机箱盖下方的载物台上，文件的图像将显示在屏幕中。 通过在软件界面下选择适当的照明和查看条件，可以呈现肉眼所无法识别的安全特征。

2017年2月28日 · This pilot study aims to promote the use of Visual Spectral Comparator (VSC) as a non-destructive presumptive technique to analyze the questioned stain. The technique is not …

该设备引入了目前世界领先的超光谱分析和最新防伪检验功能。 其工作原理是将检验客体上每个信息点对不同波段的光的发射特性进行记录后，生成不同波长下的图像信息立方体（Image Cube），并可快速显示不同波段下的光谱图像。 运用该技术可获得更大的信息量和更精确的分析数据，从而大幅度提高针对不同笔迹添加字迹的区分能力、消退字迹的显现能力及印章印油成份的分析能力的检验能力。