Method for speed up protected image filtration in clouds

DOI: 10.31673/2412-4338.2019.049911

Abstract

The article proposes a method to speed up the arithmetic mean filtration of images using remote computational resources (cloud systems). The proposed method deals with secure cloud calculations. It provides images protection from illegal access to it during the sending and computing in a potentially insecure environment. It is shown that the perspective direction of organization of cryptographic image protection is the use of additive image conversion. The operations of the elaborated method are divided into two main parts. The first part is the encryption and decryption of images. The processing of the first part needs less computing resources and can be executed using user resources. The second part is arithmetic mean filtration of images, executed on powerful cloud computational resources. The cryptographical protection elements of the proposed method do not make any influence on the result of image filtration.
The article includes the mathematical background of the proposed approach. The results derived theoretically have been confirmed by the results of experimental researches. The proposed procedure of secure arithmetic mean filtration of images is described in detail and illustrated by an example. A recommendation to improve the efficiency of the proposed procedure of arithmetic mean filtration has been worked out. A comparative analysis of the proposed method has been conducted. Theoretically and experimentally it has been proved that the proposed method accelerates arithmetic mean filtration in approximately 4 times compared with the existing methods to speed up this filtration of images using only user computing resources. The developed method is oriented for use in aerospace image processing systems.

Keywords: arithmetical mean filtration, secure computing, secure image processing, cloud computing, cloud technologies.

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