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NCJ Number: 235735 Find in a Library
Title: RedLight (Beta) Software, Version Evaluation Report
Corporate Author: NIJ Criminal Justice Electronic Crime Technology Ctr of Excellence
United States of America
Date Published: January 2011
Page Count: 22
Sponsoring Agency: National Law Enforcement and Corrections Technology Center (NLECTC)
Gaithersburg, MD 20879
NCJRS Photocopy Services
Rockville, MD 20849-6000
NIJ Criminal Justice Electronic Crime Technology Ctr of Excellence
Phillipsburg, NJ 08865
Sale Source: NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America

National Law Enforcement and Corrections Technology Center (NLECTC)
700 N. Frederick Ave.
Bldg. 181, Room 1L30
Gaithersburg, MD 20879
United States of America
Document: PDF
Type: Test/Measurement
Format: Document; Document (Online)
Language: English
Country: United States of America
Annotation: This report presents results from the National Institute of Justice’s Electronic Crime Technology Center of Excellence’s (ECTCoE) evaluation and testing of RedLight (Beta) Software Version, which is an application designed to detect pornographic image content within a computer file system.
Abstract: The Redlight software uses sophisticated image analysis techniques in detecting pornography through characteristics such as high concentrations of skin tone and edges indicative of humans. The software will only run on Windows XP or later. The evaluation concludes that RedLight would be a “great asset to the investigative tool box.” In one of the tests, for example, out of 29,721 images, RedLight identified 358 as possible pornographic images. Although those images were subsequently determined not to be pornographic, they met RedLight’s criteria for skin tone and shapes. This finding means that the forensics examiner would be saved the time of searching each of the 29,721 images to determine if any were pornographic. Thus RedLight is useful in assisting an examiner in identifying potential evidence in a child pornography case by minimizing the amount of graphic files that may constitute evidence. Once RedLight identifies potential pornography, a more in-depth examination can be conducted. RedLight also enables the user to narrow the search for date and time blocks or files of a certain size, which can be useful if the approximate date and time of the downloading of the images is known. In addition to presenting the evaluation findings, this report describes the download and installation of Red Light, configuration of RedLight, and the objectives and procedures of the four tests that were conducted on RedLight. 6 figures
Main Term(s): Computer related crime
Index Term(s): Child Pornography; Computer evidence; Computer related crime; Computer software; Evidence collection; Pornography
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