From: Progressive Exponential Clustering-Based Steganography
Image | Number of coloursbefore expansion | Number of coloursafter expansion | Expansion rate | Distortiondue to expansion | |||
---|---|---|---|---|---|---|---|
 |  |
|
|
|
|
|
|
Hill | 149509 | 163513 | 163993 |
|
| 64.21 dB | 66.20 dB |
Mandrill | 662895 | 663023 | 663023 |
|
| 62.05 dB | 66.20 dB |