| Paper Abstract and Keywords |
| Presentation |
2009-05-28 11:00
Detecting Nonlinearly-Resized JPEG Images by Analyzing High-Frequency Elements in DCT Coefficients
Tomoaki Matsunami, Toshihoko Yamasaki, Kiyoharu Aizawa (Univ. of Tokyo) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
In this paper, we propose a method for detecting nonlinearly-resized JPEG images. We defined 8x8 periodic blocks as JPEG blocks. JPEG block boundaries are detected applying 8x8 block DCT to all the pixels of the input image and analyzing the high-frequency coefficients in them. If the JPEG block boundaries are not periodic by 8x8, the image is regarded as “forgery”. In order to quantitatively analyze the degree of forgery, we have developed two approaches such as truth-score method and correlation-score method. Experimental results using 375 original (untouched) images and 375 nonlinearly-resized images demonstrated that our proposed method can classify them with over 90% of accuracy. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Image Forensics / Forgery Detection / JPEG Compression / DCT / / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 109, no. 63, IE2009-12, pp. 11-16, May 2009. |
| Paper # |
IE2009-12, PRMU2009-3, MI2009-3 |
| Date of Issue |
2009-05-21 (IE, PRMU, MI) |
| Conference Information |
| Committee |
PRMU IE MI |
| Conference Date |
2009-05-28 - 2009-05-29 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Gifu Univ. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
IE |
| Conference Code |
2009-05-PRMU-IE-MI |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Detecting Nonlinearly-Resized JPEG Images by Analyzing High-Frequency Elements in DCT Coefficients |
| Sub Title (in English) |
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| Keyword(1) |
Image Forensics |
| Keyword(2) |
Forgery Detection |
| Keyword(3) |
JPEG Compression |
| Keyword(4) |
DCT |
| Keyword(5) |
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| Keyword(6) |
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| 1st Author's Name |
Tomoaki Matsunami |
| 1st Author's Affiliation |
the University of Tokyo (Univ. of Tokyo) |
| 2nd Author's Name |
Toshihoko Yamasaki |
| 2nd Author's Affiliation |
the University of Tokyo (Univ. of Tokyo) |
| 3rd Author's Name |
Kiyoharu Aizawa |
| 3rd Author's Affiliation |
the University of Tokyo (Univ. of Tokyo) |
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| Speaker |
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| Date Time |
2009-05-28 11:00:00 |
| Presentation Time |
30 |
| Registration for |
IE |
| Paper # |
IEICE-IE2009-12,IEICE-PRMU2009-3,IEICE-MI2009-3 |
| Volume (vol) |
IEICE-109 |
| Number (no) |
no.63(IE), no.64(PRMU), no.65(MI) |
| Page |
pp.11-16 |
| #Pages |
IEICE-6 |
| Date of Issue |
IEICE-IE-2009-05-21,IEICE-PRMU-2009-05-21,IEICE-MI-2009-05-21 |
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