Image Scrambling Degree Evaluation Method Based on DCT
Qiuyan Sun · Jisuanji gongcheng · 2009
There appears a lot of scrambling methods,but no one is the best.In order to measure the scrambling degree of these algorithms to different images better,this paper proposes a new method for accessing the image scrambling degree,which utilities the favorable performance of Discrete Cosine Transform(DCT) coefficients and the feature of masking of human vision system.Experiments show that the method correlates with subjective assessment and its results can reflect scrambling effect well of the same image and different images.