This paper proposes a robust image hashing technique based on the sign of coefficients in the Discrete Cosine Transforms (DCT) domain. The idea consists of exploiting the energy compaction property of the DCT and its ability to carry information of edges and texture in DCT sign values. It has been shown that the DCT sign-based hashing technique offers an excellent robustness against signal processing operations and geometric attacks and outperforms the conventional DCT-based image hashing technique.
|Publication status||Published - 9 Sep 2012|
|Event||6th International Conference on Software Knowledge Information Management and Applications (SKIMA 2012) - Chengdu University, China|
Duration: 9 Sep 2012 → …
|Conference||6th International Conference on Software Knowledge Information Management and Applications (SKIMA 2012)|
|Period||9/09/12 → …|