A new encryption-then-compression algorithm using the rate–distortion optimization
作者：
Highlights：
• We propose an encryption-then-compression scheme using the lifting scheme.
• We obtain the optimum quantization step via the rate–distortion optimization.
• The proposed scheme outperforms the pixel-domain permutation-based prior art.
• It obtains the rate–distortion performance comparable to the conventional JPEG.
• The developed scheme has a low computational cost.
摘要
•We propose an encryption-then-compression scheme using the lifting scheme.•We obtain the optimum quantization step via the rate–distortion optimization.•The proposed scheme outperforms the pixel-domain permutation-based prior art.•It obtains the rate–distortion performance comparable to the conventional JPEG.•The developed scheme has a low computational cost.
论文关键词：Compression of encrypted image,Rate–distortion optimization,Quantization,Lifting scheme
论文评审过程：Received 24 April 2015, Revised 27 July 2015, Accepted 11 September 2015, Available online 21 September 2015, Version of Record 14 November 2015.
论文官网地址：https://doi.org/10.1016/j.image.2015.09.009
