Secure Image Retrieval Based On Orthogonal Decomposition Under Cloud Environment

Yanyan Xu, Lizhi Xiong, Zhengquan Xu & Li Jiang
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...
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