Speech and Linguistics -- Statistical Evaluation of Biometric Evidence in Forensic Automatic Speaker Recognition -- Forensic Authorship Attribution Using Compression Distances to Prototypes -- Printers -- Estimation of Inkjet Printer Spur Gear Teeth Number from Pitch Data String of Limited Length -- Detecting the Spur Marks of Ink-Jet Printed Documents Using a Multiband Scanner in NIR Mode and Image Restoration -- Fingerprints -- A Computational Discriminability Analysis on Twin Fingerprints -- Probability of Random Correspondence for Fingerprints -- Visualisation -- A New Computational Methodology for the Construction of Forensic, Facial Composites -- Geovisualization Approaches for Spatio-temporal Crime Scene Analysis - Towards 4D Crime Mapping -- Multimedia -- Multimedia Forensics Is Not Computer Forensics -- Using Sensor Noise to Identify Low Resolution Compressed Videos from YouTube -- Using the ENF Criterion for Determining the Time of Recording of Short Digital Audio Recordings -- Handwriting -- A Machine Learning Approach to Off-Line Signature Verification Using Bayesian Inference -- Computer-Assisted Handwriting Analysis: Interaction with Legal Issues in U.S. Courts -- Analysis of Authentic Signatures and Forgeries -- Documents -- Automatic Line Orientation Measurement for Questioned Document Examination -- Color Deconvolution and Support Vector Machines.

This book constitutes the refereed proceedings of the Third International Workshop, IWCF 2009, held in The Hague, The Netherlands, August 13-14, 2009. The 16 revised full papers presented were carefully reviewed and are organized in topical sections on speech and linguistics, fingerprints, handwriting, documents, printers, multimedia and visualization. This volume is interesting to researchers and professionals who deal with forensic problems using computational methods. Its primary goal is the discovery and advancement of forensic knowledge involving modeling, computer simulation, and computer-based analysis and recognition in studying and solving forensic problems.