NuDetective: A Forensic Tool to Help Combat Child Pornography through Automatic Nudity Detection

With the recent amendment in Brazilian law, where possession of files containing child pornography is now considered a crime, the need to detect this type of content at crime scenes increased. This paper presents the NuDetective Forensic Tool, which was developed in order to assist forensic examiners to conduct such analysis in a timely manner at the crime scene. This Tool performs automatic detection of nudity in images and also performs analysis of file names. Two evaluation experiments of the Tool were performed and showed detection rates around 95%, with low rates of false positives, combined with fast processing.