Title :
Passive Forensics Method to Detect Tampering for Double JPEG Compression Image
Author :
Liu, Zhenli ; Wang, Xiaofeng ; Chen, Jing
Author_Institution :
Xi´´an Univ. of Technol., Xi´´an, China
Abstract :
A passive forensics method to detect tampering for double JPEG compression image is proposed. In the proposed method, inconsistency of quality factors is used to detect double JPEG compression, and then a passive forensics approach to detect tampering and locate tampered area for tampered JPEG images is proposed. Comparing with existing methods, the main advantages of the proposed method are as follows: (1) It can detect rotation, scaling and tampering in small area. (2) It has a high computing efficiency.
Keywords :
computer forensics; data compression; image coding; double JPEG compression image; passive forensics method; rotation detection; tampering detection; Digital images; Forensics; Image coding; Image segmentation; Q factor; Quantization; Transform coding; 8-neighborhood method; JPEG artifact; K-means clustering; distortion degree;
Conference_Titel :
Multimedia (ISM), 2011 IEEE International Symposium on
Conference_Location :
Dana Point CA
Print_ISBN :
978-1-4577-2015-4
DOI :
10.1109/ISM.2011.37
