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Performance comparison of Zerotrees based Digital watermarking



เครือข่ายนักวิจัย+ผลงานวิจัย (full screen)


In this paper, speech based Digital watermarking wing Zerotrees of the rearranged DCT, the DWT and the WPT for Digital images are studied and compared, in term of the quality of the resultant images and the robustriess against attacks. The PSNR is used to evaluate the qua.lity obtained from the Watermarked images, while the robustness is measured from the strength of attacks the embedded speech signal can survive. Since in this research work the contents contained in the speech is used to identify the Specific information hidden in the embedded signal. The speech signal after being extracted from the Watermarked images is played back to the listeners to determine whether its content is intelligible or not. The experimental results show that the watermarking scheme implementing the Zerotrees of the WPT give the best performance, compared to the others. © 2002 IEEE.

Digital watermarking (102 items found) | Specific information (6 items found) | Watermarked images (20 items found) | Digital image (39 items found) | Zerotrees (7 items found) | Performance comparison | Speech communication | Watermarking schemes | Embedded signals | Speech signals | Robotics |

ต้นฉบับข้อมูล : scopus