Details

Autor(en) / Beteiligte

• Yu, Jiang
• Li, Fengyong
• Cheng, Hang
• Zhang, Xinpeng

Titel

Spatial Steganalysis Using Contrast of Residuals

Ist Teil von

• IEEE signal processing letters, 2016-07, Vol.23 (7), p.989-992

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2016

Quelle

IEL

Beschreibungen/Notizen

• This letter proposes a novel scheme for spatial steganalysis based on contrast of residuals (CoR). After selecting complex blocks from an uncompressed image by a fluctuation function, the residuals are calculated from the selected blocks and the whole image after applying diverse filters. The CoR is represented as an angle and the norm of residuals is considered as the corresponding weight of angle, which is used as the new steganalysis feature. In the proposed scheme, no quantization and truncation is required and the effective information of long-range dependencies among pixels is kept properly. Also, the dimensionality of feature is linear with the number of residuals. The accuracy of proposed scheme is evaluated on HUGO and WOW algorithms, and the experimental results show that the proposed CoR feature has superior performance at low embedding rate with lower dimensionality.