DocumentCode
1889286
Title
Notice of Retraction
Estimation of rescaling factor and detection of image splicing
Author
Wei Weimin ; Wang Shuozhong ; Tang Zhenjun
Author_Institution
Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai
fYear
2008
fDate
10-12 Nov. 2008
Firstpage
676
Lastpage
679
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Re-sampled signals show periodicity in its nth derivative and covariance, and it can be used to estimate the scaling ratio. Calculate the second-order difference along the vertical (horizontal) direction of image. Compute the mean of absolute difference along the horizontal (vertical) direction and obtain a vector, which will be appended with zero to make its length equal to an integer power of 2. Calculate DFT to the vector and produce the frequency-magnitude curve. Detect the peak frequency in the curve and obtain the scaling ratio along the horizontal (vertical) direction. It is applicable to different interpolation schemes, no matter whether the image has been JPEG compressed before or after interpolation. Experimental results show that the proposed method can judge whether or not a photo captured by the digital camera is undergone the digital zoom, and approximately estimate the scaling ratio.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Re-sampled signals show periodicity in its nth derivative and covariance, and it can be used to estimate the scaling ratio. Calculate the second-order difference along the vertical (horizontal) direction of image. Compute the mean of absolute difference along the horizontal (vertical) direction and obtain a vector, which will be appended with zero to make its length equal to an integer power of 2. Calculate DFT to the vector and produce the frequency-magnitude curve. Detect the peak frequency in the curve and obtain the scaling ratio along the horizontal (vertical) direction. It is applicable to different interpolation schemes, no matter whether the image has been JPEG compressed before or after interpolation. Experimental results show that the proposed method can judge whether or not a photo captured by the digital camera is undergone the digital zoom, and approximately estimate the scaling ratio.
Keywords
data compression; image coding; image sampling; interpolation; DFT; JPEG compressed; image splicing detection; interpolation schemes; resampled signals; rescaling factor; second-order difference; Authentication; Digital cameras; Discrete Fourier transforms; Frequency; Image coding; Interpolation; Signal processing; Splicing; Support vector machines; Transform coding; digital zoom; discrete Fourier transform; image interpolation; image splicing; passive authentication;
fLanguage
English
Publisher
ieee
Conference_Titel
Communication Technology, 2008. ICCT 2008. 11th IEEE International Conference on
Conference_Location
Hangzhou
Print_ISBN
978-1-4244-2250-0
Type
conf
DOI
10.1109/ICCT.2008.4716196
Filename
4716196
Link To Document