Chroma key background detection for digital video using statistical correlation of blurring artifact
Document Type
Article
Publication Date
1-1-2016
Abstract
Video editing software can be used to combine different videos into one video using the chroma key feature. However, detecting such video manipulation is an understudied topic. Digital forgers may present a manipulated video from chroma key composition as evidence in court, thus creating a severe problem. In this paper, we propose a blind detection technique designed to analyze the statistical correlation of blurring artifact extracted from a digital video. This technique allows us to detect chroma key forgery in a manipulated composite video. Findings from our experiments demonstrate that the proposed detection technique can adequately determine the presence of manipulation on a video using chroma key, with a true positive detection rate of 91.12% and a false positive detection rate of 1.95%.
Keywords
Chroma key, Green screen, Correlation of blurring artifact, Video composition
Divisions
fsktm
Funders
Ministry of Education, Malaysia: University of Malaya High Impact Research Grant UM.C/625/1/HIR/MoE/FCSIT/17,Ahmadu Bello University, Zaria Nigeria: Tertiary Education Trust Fund (TETFund)
Publication Title
Digital Investigation
Volume
19
Publisher
Elsevier