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  5. Quantitative analysis of the differences between original digital image and images subjected to cloning, by saving image with a lossy format

Quantitative analysis of the differences between original digital image and images subjected to cloning, by saving image with a lossy format

S.N. Grygorenko
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In this paper it was defined the quantitative parameters for the digital image, allowing to allocate the original image from the image that has been subjected to cloning operation by saving image with a lossy format with different quality factors. The main analysis object is a matrix whose elements reflect the the connection between all possible pairs of the image matrix blocks. It was found that the number of elements of the matrix, the values of which coincides with the value of its global minimum differently in cases of presence / absence of cloning for the vast majority for tested digital images, therefore can be used for the separation the original and modified images by saving the last with quality ratio losses. Additional research needs a case where K=1. It was proposed a procedure for carrying out these researches.
Keywords: digital image, cloning, lossy format, quality factor