CASIA OpenIR  > 智能感知与计算研究中心
Position Determines Perspective: Investigating Perspective Distortion for Image Forensics of Faces
Peng, Bo1,3; Wang, Wei1,2; Dong, Jing1,4; Tan, Tieniu1; Wei Wang
Conference NameIEEE Conference on Computer Vision and Pattern Recognition Workshops
Conference Date21-26 July 2017
Conference PlaceHonolulu, HI, USA
AbstractThis paper points out a new telltale trace - the characteristic of perspective distortion (CPD), for the image forensics of faces. The perspective distortion is determined by the position of image shooting, and it is often overlooked when creating a forgery, which results in the inconsistency between the claimed camera parameters and the CPD in the face image. To investigate this consistency problem, we cast it to the consistency between the claimed camera intrinsic parameters and the estimated ones from the CPD. Our parameter estimation approach is based on geometric observations that are related to CPD, like facial landmarks and contours. We analyze the estimation uncertainty caused by indeterminacy of observation to obtain a more reliable forensic decision. Experiments on synthetic datasets and real forgery examples demonstrate the effectiveness of the proposed method.
KeywordImage Forensics Perspective Distortion Camera Intrinsic Parameters
Indexed ByEI
Document Type会议论文
Corresponding AuthorWei Wang
Affiliation1.Chinese Acad Sci, Natl Lab Pattern Recognit, Ctr Res Intelligent Percept & Comp, Inst Automat, Beijing 100190, Peoples R China
2.State Key Lab Cryptol, Beijing 100878, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Informat Engn, State Key Lab Informat Secur, Beijing 100093, Peoples R China
First Author AffilicationChinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Peng, Bo,Wang, Wei,Dong, Jing,et al. Position Determines Perspective: Investigating Perspective Distortion for Image Forensics of Faces[C],2017:1813-1821.
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