Research Article
A Robust Coverless Image Steganography Algorithm Based on Image Retrieval with SURF Features
Table 8
Comparison of additional transmission cost.
| | Method | Additional considerations | Length of secret/bits | Length of additional information/bits | Ratio |
| | LDA_DCT [18] | Position information (rx, ry) | 1∼15 | 0∼8 | 0∼8 | | DenseNet_DWT [19] | Position information (rx, ry) | 1∼15 | 0∼8 | 0∼8 | | DCMH-CNN [32] | Number of clustering K | 1∼16 | 4 | 0.25∼4 | | Our | None | 1∼16 | 0 | 0 |
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