Abstract
A joint of image encryption and compression is investigated, and a novel joint encryption and compression scheme is proposed. In our scheme, the encryption process is performed before compression. Making use of the properties of discrete wavelet transform (DWT) and Set Partitioning in Hierarchical Trees (SPIHT) coding, confusion is restricted to the interior of single subband image itself and so image details are retained. Furthermore, diffusion preserves the two most significant bits (MSBs) and the sign bit, which contain important information about the image. The experiments show that the proposed algorithm possesses a good visual quality of the reconstructed image and a high encryption speed. © 2012 Chinese Physical Society.
| Translated title of the contribution | SPIHT-based joint image compression and encryption |
|---|---|
| Original language | Chinese (Simplified) |
| Article number | 40505 |
| Journal | 物理学报 |
| Volume | 61 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Mar 2012 |
Research Keywords
- 密码系统
- 压缩
- 离散小波变换 (DWT)
- 基于层次树的集合划分 (SPIHT)
- Cryptography
- Compression
- Discrete wavelet transform (DWT)
- Set partitioning in hierarchical trees (SPIHT)