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Position Determines Perspective: Investigating Perspective Distortion for Image Forensics of Faces
Peng, Bo1,3; Wang, Wei1,2; Dong, Jing1,4; Tan, Tieniu1; Wei Wang
2017
会议名称IEEE Conference on Computer Vision and Pattern Recognition Workshops
页码1813-1821
会议日期21-26 July 2017
会议地点Honolulu, HI, USA
摘要This 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.
关键词Image Forensics Perspective Distortion Camera Intrinsic Parameters
收录类别EI
文献类型会议论文
条目标识符http://ir.ia.ac.cn/handle/173211/15403
专题智能感知与计算研究中心
通讯作者Wei Wang
作者单位1.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
推荐引用方式
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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