Description: 基于Haar小波变换的数字图像水印算法,信息隐藏, 数字水印,小波变换 -Based on the Haar wavelet transform algorithm for digital image watermarking, information hiding, digital watermarking, wavelet transform Platform: |
Size: 162816 |
Author:陈彩琼 |
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Description: Owing to the broad application value of audio
watermarking in remote transmission and mobile
extraction, it is very important to study watermarking
approaches against A/D and D/A conversion. Based
on wavelet decomposition and cepstrum technology,
an audio watermarking algorithm is proposed where
the low-frequency wavelet coefficients are chosen for
cepstrum transforming. Then, the obtained cepstrum
data shows stable for watermark hiding by the
methods of edging data cutting and statistical mean
modification. The synchronization is not required in
the algorithm. Experimental results show that the
proposed algorithm can resist on the attack of A/D
and D/A successfully with features of large capacity
and zero bit error. It will be helpful for the mobile
audio in secure broadcast and management in the Platform: |
Size: 207872 |
Author:vinay |
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Description: Owing to the broad application value of audio
watermarking in remote transmission and mobile
extraction, it is very important to study watermarking
approaches against A/D and D/A conversion. Based
on wavelet decomposition and cepstrum technology,
an audio watermarking algorithm is proposed where
the low-frequency wavelet coefficients are chosen for
cepstrum transforming. Then, the obtained cepstrum
data shows stable for watermark hiding by the
methods of edging data cutting and statistical mean
modification. The synchronization is not required in
the algorithm. Experimental results show that the
proposed algorithm can resist on the attack of A/D
and D/A successfully with features of large capacity
and zero bit error. It will be helpful for the mobile
audio in secure broadcast and management in the Platform: |
Size: 199680 |
Author:vinay |
Hits:
Description: Owing to the broad application value of audio
watermarking in remote transmission and mobile
extraction, it is very important to study watermarking
approaches against A/D and D/A conversion. Based
on wavelet decomposition and cepstrum technology,
an audio watermarking algorithm is proposed where
the low-frequency wavelet coefficients are chosen for
cepstrum transforming. Then, the obtained cepstrum
data shows stable for watermark hiding by the
methods of edging data cutting and statistical mean
modification. The synchronization is not required in
the algorithm. Experimental results show that the
proposed algorithm can resist on the attack of A/D
and D/A successfully with features of large capacity
and zero bit error. It will be helpful for the mobile
audio in secure broadcast and management in the Platform: |
Size: 346112 |
Author:vinay |
Hits:
Description: A novel distortionless image data hiding algorithm based on integer
wavelet transform that can invert the stego-image into the original
image without any distortion after the hidden data are extracted is
proposed. This algorithm hides data into one (or more) middle bitplane(
s) of the integer wavelet transform coefficients in the middle and
high frequency subbands. It can embed much more data compared
with the existing distortionless data hiding techniques and satisfy the
imperceptibility requirement. The image histogram modification is
used to prevent greyscales from possible overflowing. Experimental
results have demonstrated the validity of the algorithm Platform: |
Size: 392192 |
Author:mehdi |
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Description: The code implements the following paper:
Guorong Xuan, Jiang Zhu, Jidong Chen, Shi Y.Q., Zhicheng Ni, Wei Su, "Distortionless data hiding based on integer wavelet transform" IET Electronics Letters, Volume: 38, Issue 25, page 1646- 1648, December 2002. (ISSN: 0013-5194)
The watermark embedding and extraction modules have been implemented separately.
The watermark embedding module embeds the watermark using bitplane compression in the integer wavelet transform domain.
The watermark extraction module extracts the previously embedded watermark and restores the original image.
A logo image is used as a watermark but can be replaced with any thing.-The code implements the following paper:
Guorong Xuan, Jiang Zhu, Jidong Chen, Shi Y.Q., Zhicheng Ni, Wei Su, "Distortionless data hiding based on integer wavelet transform" IET Electronics Letters, Volume: 38, Issue 25, page 1646- 1648, December 2002. (ISSN: 0013-5194)
The watermark embedding and extraction modules have been implemented separately.
The watermark embedding module embeds the watermark using bitplane compression in the integer wavelet transform domain.
The watermark extraction module extracts the previously embedded watermark and restores the original image.
A logo image is used as a watermark but can be replaced with any thing. Platform: |
Size: 1015808 |
Author:thinkingbig4 |
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Description: 基于小波的编码变换和图像的二次压缩，区别于经典的小波变换-Coding based on wavelet transform and the second image compression, wavelet transform is different from the classic Platform: |
Size: 1024 |
Author:宁凝 |
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Description: his paper presents a reversible data hiding method based on wavelet spread spectrum and
histogram modification. Using the spread spectrum scheme, we embed data in the coefficients of integer
wavelet transform in high frequency subbands. The pseudo bits are also embedded so that the decoder does
not need to know which coefficients have been selected for data embedding, thus enhancing data hiding
efficiency. To prevent the overflow and underflow, an efficient histogram modification method is developed
and utilized. Experimental r-his paper presents a reversible data hiding method based on wavelet spread spectrum and
histogram modification. Using the spread spectrum scheme, we embed data in the coefficients of integer
wavelet transform in high frequency subbands. The pseudo bits are also embedded so that the decoder does
not need to know which coefficients have been selected for data embedding, thus enhancing data hiding
efficiency. To prevent the overflow and underflow, an efficient histogram modification method is developed
and utilized. Experimental r Platform: |
Size: 164864 |
Author:Ragu |
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Description: technique is quite small owing to the low compression ratio. Based on this, a general least significant
bit-plane (LSB) embedding technique in the spatial domain was proposed by Celik et al. [6]. The payload and
imperceptibility of embedded data are largely improved because of the more efficient compression technique.
Domingo-Ferrer et al. [5] proposed a spread spectrum data hiding method that is only reversible with respect
to the modified version of the original host signal . Xuan et al. [7] proposed a reversible data hiding algorithm
carried out in the integer wavelet transform (IWT) domain. An improved version of this algorithm was
reported in [11]. By exploiting the superior features of wavelet transform, in particular, the high decorre-technique is quite small owing to the low compression ratio. Based on this, a general least significant
bit-plane (LSB) embedding technique in the spatial domain was proposed by Celik et al. [6]. The payload and
imperceptibility of embedded data are largely improved because of the more efficient compression technique.
Domingo-Ferrer et al. [5] proposed a spread spectrum data hiding method that is only reversible with respect
to the modified version of the original host signal . Xuan et al. [7] proposed a reversible data hiding algorithm
carried out in the integer wavelet transform (IWT) domain. An improved version of this algorithm was
reported in [11]. By exploiting the superior features of wavelet transform, in particular, the high decorre Platform: |
Size: 474112 |
Author:Ragu |
Hits:
Description: 本程序为基于小波变换的数字水印技术，其是信息隐藏领域一个非常重要的分支。-This procedure for the digital watermarking technology based on wavelet transform, which is a very important branch in the field of information hiding. Platform: |
Size: 18432 |
Author:李争 |
Hits:
Search - wavelet based hiding