TY - CONF T1 - Two-dimensional Statistical Test for the Presence of Almost Cyclostationarity on Images T2 - IEEE International Conference on Image Processing (ICIP) Y1 - 2010 A1 - David Vázquez-Padín A1 - C. Mosquera A1 - Fernando Pérez-González KW - cyclostationarity KW - Image forensics KW - interpolation KW - resampling factor estimation KW - spatial transformation KW - watermarking AB -

In this work, we study the presence of almost cyclostationary fields in images for the detection and estimation of digital forgeries. The almost periodically correlated fields in the two-dimensional space are introduced by the necessary interpolation operation associated with the applied spatial transformation. In this theoretical context, we extend a statistical time-domain test for presence of cyclostationarity to the two-dimensional space. The proposed method allows us to estimate the scaling factor and the rotation angle of resized and rotated images, respectively. Examples of the output of our method are shown and comparative results are presented to evaluate the performance of the two-dimensional extension.

JF - IEEE International Conference on Image Processing (ICIP) PB - IEEE CY - Hong Kong, China ER -