Cloud computation-based internet education platform resource library image retrieval method

Abstract

The invention belongs to the technical field of cloud computation, and particularly relates to a cloud computation-based internet education platform resource library image retrieval method. The method comprises the following steps of: data pre-processing: extracting image features by an image owner by using an image feature extraction algorithm, constructing a safety index by using the image features, encrypting images in an image library, and finally sending the safety index and the encrypted image library to a cloud server provider; retrieval: authorizing a user to construct a search trap door and submitting the search trap door to the cloud service provider; and searching an index file by the service provider according to a retrieval request so as to obtain image identifiers matched with the retrieval request, and sorting the sorting results according to relevancy. According to the method, a global image feature-based encrypted image retrieval method is used for realizing the efficient and convenient using of image data under cloud computing environment.

Description

technical field [0001] The invention belongs to the technical field of cloud computing, and in particular relates to an image retrieval method of an Internet education platform resource library based on cloud computing. Background technique [0002] With the emergence of big data, cloud computing, as a computing platform, provides conditions for adapting to the evolving system structure and real-time processing of big data. Fast scaling, charging based on use, and a series of features such as virtualization, distribution, multi-tenancy, and service outsourcing. As a new computing model for serving users, it has become a research hotspot in the industry. [0003] Driven by the rapid development of the Internet, the traditional era of information management is entering the stage of network resource management. Especially in recent years, the development and application of cloud computing technology in many fields has made resource management more mature. In the field of educ...

AI Technical Summary

Problems solved by technology

However, when the image library reaches a certain scale, this "encrypted upload, download and decrypt" usage method will become very inefficient, and it also violates the original intention of convenient data use advocated by cloud computing.

Although cloud storage has the advantages of convenient storage and low price, service providers are not completely reliable. In order to protect the privacy of data, data owners need to encrypt images and other data before storing them in cloud servers.

Data encryption solves the problem of data privacy protection very well, but it also brings inconvenience to the use of data, especially the image retrieval technology in plain text cannot be used directly after data encryption

The large amount of digital image data is very suitable for storage in the cloud. However, the existing encrypted data retrieval technology is usually designed for text data. In the cloud computing environment, the efficient use of encrypted images has become an urgent problem to be solved.

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