Color separation in forensic image processing.
In forensic image processing, it is often important to be able to separate a feature from an interfering background or foreground, or to demonstrate colors within an image to be different from each other. In this study, a color deconvolution algorithm that could accomplish this task is described, and it is applied to color separation problems in document and fingerprint examination. Subtle color differences (sometimes invisible to the naked eye) are found to be sufficient, which is demonstrated successfully for several cases where color differences were shown to exist, or where colors were removed from the foreground or background. The software is available for free in the form of an Adobe Photoshop-compatible plug-in.
Berger
Charles E H
CE
Document Group, Chemistry Department, Netherlands Forensic Institute, 2490 AA The Hague, The Netherlands. cberger@nfi.minjus.nl
de Koeijer
Jan A
JA
Glas
Wendy
W
Madhuizen
Henk T
HT