The Application of Discrete Cosine Transformation in the Blind Watermarking Technique of Color Image
Xudong Bao · Journal of Biomedical Engineering Research · 2007
A watermark algorithm based on discrete cosine transformation(DCT) area,which can insure embedded watermark sightless and robust was put forward,moreover,blind picking would be feasible with this method.The experiments show that the algorithm can keep the quality of original image well.In addition,embedded watermark can be picked up after most kinds of attacking operations in image processing.