Research Article
An Extended DCT Domain Watermarking for Robot Vision against Geometric Image Attacks
Table 3
Experimental units.
| Extraction rate | (no. of successfully extracted texts/total no. of texts inserted) * 100 | PSNR | Shows the difference in image or voice using a numerical value. | Insertion speed | The time taken to embed a watermark. | Extraction speed | The time taken to extract a watermark. |
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