Estimation for filtering attacks on QIM watermarks
A scheme for estimating two-band amplitude scale attack within a quantization-based watermarking context was presented.Quantization-based watermarking schemes are not robust against linear time invariant（LTI） filtering attacks,on which a multi-band amplitude scaling attack that modifies the spectrum...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2007-01-01
|
| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74657738/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841537496414945280 |
|---|---|
| author | WANG Jin-shen DAI Yue-wei WANG Zhi-quan |
| author_facet | WANG Jin-shen DAI Yue-wei WANG Zhi-quan |
| author_sort | WANG Jin-shen |
| collection | DOAJ |
| description | A scheme for estimating two-band amplitude scale attack within a quantization-based watermarking context was presented.Quantization-based watermarking schemes are not robust against linear time invariant（LTI） filtering attacks,on which a multi-band amplitude scaling attack that modifies the spectrum of the signal using an analysis/synthesis filter bank was concentrated.First the probability density function（PDF） of the attacked signal was derived.Second,using a simplified approximation of the PDF model,a maximum likelihood（ML） procedure for estimating two-band amplitude scaling factor was proposed.Finally,experiments were performed with synthetic audio signals showing the good performance of the proposed estimation technique under realistic conditions. |
| format | Article |
| id | doaj-art-daeb865dcbd4483abd2ee108ca31786e |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2007-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-daeb865dcbd4483abd2ee108ca31786e2025-01-14T08:35:36ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2007-01-01909574657738Estimation for filtering attacks on QIM watermarksWANG Jin-shenDAI Yue-weiWANG Zhi-quanA scheme for estimating two-band amplitude scale attack within a quantization-based watermarking context was presented.Quantization-based watermarking schemes are not robust against linear time invariant（LTI） filtering attacks,on which a multi-band amplitude scaling attack that modifies the spectrum of the signal using an analysis/synthesis filter bank was concentrated.First the probability density function（PDF） of the attacked signal was derived.Second,using a simplified approximation of the PDF model,a maximum likelihood（ML） procedure for estimating two-band amplitude scaling factor was proposed.Finally,experiments were performed with synthetic audio signals showing the good performance of the proposed estimation technique under realistic conditions.http://www.joconline.com.cn/zh/article/74657738/watermarkingmaximum likelihood estimationmulti-band |
| spellingShingle | WANG Jin-shen DAI Yue-wei WANG Zhi-quan Estimation for filtering attacks on QIM watermarks Tongxin xuebao watermarking maximum likelihood estimation multi-band |
| title | Estimation for filtering attacks on QIM watermarks |
| title_full | Estimation for filtering attacks on QIM watermarks |
| title_fullStr | Estimation for filtering attacks on QIM watermarks |
| title_full_unstemmed | Estimation for filtering attacks on QIM watermarks |
| title_short | Estimation for filtering attacks on QIM watermarks |
| title_sort | estimation for filtering attacks on qim watermarks |
| topic | watermarking maximum likelihood estimation multi-band |
| url | http://www.joconline.com.cn/zh/article/74657738/ |
| work_keys_str_mv | AT wangjinshen estimationforfilteringattacksonqimwatermarks AT daiyuewei estimationforfilteringattacksonqimwatermarks AT wangzhiquan estimationforfilteringattacksonqimwatermarks |