Open Access
ARTICLE
OPPR: An Outsourcing Privacy-Preserving JPEG Image Retrieval Scheme with Local Histograms in Cloud Environment
Jian Tang, Zhihua Xia*, Lan Wang, Chengsheng Yuan, Xueli Zhao
Nanjing University of Information Science & Technology, Nanjing, 210044, China
* Corresponding Author: Zhihua Xia. Email:
Journal on Big Data 2021, 3(1), 21-33. https://doi.org/10.32604/jbd.2021.015892
Received 10 September 2020; Accepted 20 December 2020; Issue published 25 January 2021
Abstract
As the wide application of imaging technology, the number of big
image data which may containing private information is growing fast. Due to
insufficient computing power and storage space for local server device, many
people hand over these images to cloud servers for management. But actually, it
is unsafe to store the images to the cloud, so encryption becomes a necessary step
before uploading to reduce the risk of privacy leakage. However, it is not
conducive to the efficient application of image, especially in the Content-Based
Image Retrieval (CBIR) scheme. This paper proposes an outsourcing privacypreserving JPEG CBIR scheme. We design a set of JPEG format-compatible
encryption method, making no file expansion to JPEG files. We firstly combine
multiple adjacent 8 × 8 DCT coefficient blocks into big-blocks. Then, random
scrambling and stream encryption are used on the binary code of DCT coefficients
to protect the JPEG image privacy. The task of extracting features from encrypted
images and retrieving similar images are done by the cloud server. The group
index histograms of DCT coefficients are extracted from the encrypted big-blocks,
then the global vector is produced to represent the JPEG image with the aid of bagof-words (BOW) model. The security analysis and experimental results show that
our proposed scheme has strong security and good retrieval performance.
Keywords
Cite This Article
J. Tang, Z. Xia, L. Wang, C. Yuan and X. Zhao, "Oppr: an outsourcing privacy-preserving jpeg image retrieval scheme with local histograms in cloud environment,"
Journal on Big Data, vol. 3, no.1, pp. 21–33, 2021. https://doi.org/10.32604/jbd.2021.015892
Citations