Reversible data hiding in encrypted images using adaptive block-level prediction-error expansion

作者：

Highlights：

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• We propose a block-level predictor (BLP) which can obtain more precise prediction results than median edge detector (MED).

• Using BLP, we introduce a block-level prediction-error expansion (BPEE) method to embed secret data into an image.

• We further propose an adaptive BPEE (ABPEE) for RDHEI. It outperforms several state-of-the-art methods in embedding rate and PSNR.

摘要

•We propose a block-level predictor (BLP) which can obtain more precise prediction results than median edge detector (MED).•Using BLP, we introduce a block-level prediction-error expansion (BPEE) method to embed secret data into an image.•We further propose an adaptive BPEE (ABPEE) for RDHEI. It outperforms several state-of-the-art methods in embedding rate and PSNR.

论文关键词：Reversible data hiding,Encrypted images,Adaptive embedding,Block-level prediction-error expansion

论文评审过程：Received 3 November 2017, Revised 26 January 2018, Accepted 2 March 2018, Available online 8 March 2018, Version of Record 22 March 2018.

论文官网地址：https://doi.org/10.1016/j.image.2018.03.001