DocumentCode
2658693
Title
A DWT-DCT Based Passive Forensics Method for Copy-Move Attacks
Author
Wang, Xaiofeng ; Zhang, Xiaoni ; Li, Zhen ; Wang, Shangping
Author_Institution
Sch. of Sci., Xi´´an Univ. of Technol., Xi´´an, China
fYear
2011
fDate
4-6 Nov. 2011
Firstpage
304
Lastpage
308
Abstract
A passive forensics method for detecting copy-move attacks was proposed. In the proposed method, tested image was segmented into non-overlapping blocks, DCT and DWT are applied to each image block to extract features, and then compare the statistics of each image block to detection replication regions. Our method was robust to compression up to JPEG quality level 20 and against additive noise. The time complexity of our approach for sorting is O(k 1g k).
Keywords
computational complexity; computer forensics; data compression; discrete cosine transforms; discrete wavelet transforms; feature extraction; image coding; image segmentation; sorting; DCT; DWT; JPEG quality level; additive noise; attack detection; copy-move attacks; detection replication region; feature extraction; image forensics; image segmentation; passive forensics method; sorting; time complexity; Multimedia communication; Security; Copy-move detection; DCT; DWT; Feature matching; Passive forensics;
fLanguage
English
Publisher
ieee
Conference_Titel
Multimedia Information Networking and Security (MINES), 2011 Third International Conference on
Conference_Location
Shanghai
Print_ISBN
978-1-4577-1795-6
Type
conf
DOI
10.1109/MINES.2011.98
Filename
6103778
Link To Document