Crop-Resilient Image Transform

A.M.T. Ahmed (Egypt) and D.D. Day (USA)


Crop resilient, Hartley, 2-D transform, Data hiding, NPT.


In this paper, a new two-dimensional transform (crop resilient image transform) is introduced. The transform is based on the Hartley transform, where the kernel matrix is modified to meet the requirements of the crop-resilient transform. This transform can be utilized in many applications; however, in this paper the main focus is on the data hiding and cropping applications only. Experimental results in this paper emphasize: the capability of the crop-resilient transform to invisibly hide a digital signature into a host data, and the robustness of the hidden data against the cropping attack.

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