Secure Image Retrieval Based On Orthogonal Decomposition under Cloud Environment

In order to protect data privacy, image with sensitive or
private information needs to be encrypted before being outsourced to
the cloud. However, this causes difficulties in image retrieval and data
management. A secure image retrieval method based on orthogonal
decomposition is proposed in the paper. The image is divided into two
different components, for which encryption and feature extraction are
executed separately. As a result, cloud server can extract features from
an encrypted image directly and compare them with the features of the
queried images, so that the user can thus obtain the image. Different
from other methods, the proposed method has no special requirements
to encryption algorithms. Experimental results prove that the proposed
method can achieve better security and better retrieval precision.

• Yanyan Xu
• Lizhi Xiong
• Zhengquan Xu
• Li Jiang

• Secure image retrieval
• secure search
• orthogonal decomposition
• secure cloud computing.

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