关键词: 图像置乱, canny算子, 骑士巡游变换, 置乱度

Abstract: With the development of digital image scrambling techniques, there appeared a lot of scrambling methods. 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 Canny operator by analyzing the existent assessments of image scrambling degree. Experiments show that the method correlates well with subjective assessment and its results are not affected by the original images. The paper uses MATLAB as the research tool.

Key words: Image scrambling, Canny operator, Knight-tour transform, Scrambling degree