公开(公告)号：US20100266157A1

公开(公告)日：2010-10-21

申请号：US12759633

申请日：2010-04-13

申请人： Dong-Hwan SHIN ,  Kyong-Soon Kim ,  Won-Ha Lee ,  Jong-Uk Choi

发明人： Dong-Hwan SHIN ,  Kyong-Soon Kim ,  Won-Ha Lee ,  Jong-Uk Choi

IPC分类号： G06K9/00

CPC分类号： H04N5/76 ,  H04N1/32154 ,  H04N1/32165 ,  H04N1/3217 ,  H04N1/32277 ,  H04N5/765 ,  H04N5/77 ,  H04N5/775 ,  H04N5/781 ,  H04N5/85 ,  H04N7/1675 ,  H04N9/8042 ,  H04N19/467 ,  H04N19/48 ,  H04N19/61 ,  H04N19/63 ,  H04N21/23892 ,  H04N2005/91335 ,  H04N2005/91342 ,  H04N2201/3233

摘要： The present invention relates to a method for embedding and detecting watermark wherein forgery/alternation of image can be identified and the location of forgery/alternation can be verified by embedding and detecting watermark into a digital image which is shot in real time. Watermark is generated by using a quantized coefficient after frequency transform used in the compression process. By embedding this into an image, image can be compressed simultaneously with embedding watermark. The present invention discloses a method for embedding robust watermark which embeds a random sequence circular shifted from an original pseudo random sequence by the distance d as watermark into an image. The present invention discloses a technology for generating and embedding watermark by using a DCT coefficient quantized during the process for MPEG compressing the image, wherein said watermark can be generated and embedded in a unit of macro blocks or slices. The present invention discloses a technology for generating and embedding watermark by using a wavelet coefficient quantized during the process for wavelet compressing the image. Further, the present invention discloses a digital video recorder recording the image which is shot in real time embedded with watermark in accordance with the above method for embedding watermark.

摘要翻译： 本发明涉及一种嵌入和检测水印的方法，其中可以识别图像的伪造/替换，并且可以通过将水印嵌入和检测到实时拍摄的数字图像中来验证伪造/替换的位置。 通过在压缩处理中使用频率变换后的量化系数来生成水印。 通过将其嵌入到图像中，可以与嵌入水印同时压缩图像。 本发明公开了一种用于嵌入鲁棒水印的方法，该方法将从原始伪随机序列移位的随机序列循环移位距离d作为水印作为图像。 本发明公开了一种通过使用在MPEG压缩图像的处理期间量化的DCT系数来生成和嵌入水印的技术，其中所述水印可以以宏块或片的单位生成和嵌入。 本发明公开了一种利用在小波压缩图像处理过程中量化的小波系数来生成和嵌入水印的技术。 此外，本发明公开了一种根据上述嵌入水印方法，记录实时嵌入水印的图像的数字录像机。

公开(公告)号：US07707422B2

公开(公告)日：2010-04-27

申请号：US10830633

申请日：2004-04-22

申请人： Dong-Hwan Shin ,  Kyong-Soon Kim ,  Won-Ha Lee ,  Jong-Uk Choi

发明人： Dong-Hwan Shin ,  Kyong-Soon Kim ,  Won-Ha Lee ,  Jong-Uk Choi

IPC分类号： H04L9/32

CPC分类号： H04N5/76 ,  H04N1/32154 ,  H04N1/32165 ,  H04N1/3217 ,  H04N1/32277 ,  H04N5/765 ,  H04N5/77 ,  H04N5/775 ,  H04N5/781 ,  H04N5/85 ,  H04N7/1675 ,  H04N9/8042 ,  H04N19/467 ,  H04N19/48 ,  H04N19/61 ,  H04N19/63 ,  H04N21/23892 ,  H04N2005/91335 ,  H04N2005/91342 ,  H04N2201/3233

摘要： The present invention relates to a method for embedding and detecting a watermark where a forgery/alternation of an image can be identified and the location of forgery/alternation can be verified by embedding and detecting a watermark into a digital image which is shot in real time. The watermark is generated by using a quantized coefficient after frequency transform used in the compression process. By embedding this into an image, the image can be compressed simultaneously with the embedded watermark. The present invention relates to a method for embedding a robust watermark which embeds a random sequence circular shifted from an original pseudo random sequence by the distance d as the watermark is embedded into an image, and a method for generating and embedding the watermark by using a DCT coefficient quantized during an MPEG compression process of the image.

摘要翻译： 本发明涉及用于嵌入和检测水印的方法，其中可以识别图像的伪造/交替，并且可以通过将水印嵌入和检测到实时拍摄的数字图像中来验证伪造/替换的位置 。 通过在压缩处理中使用频率变换后的量化系数来生成水印。 通过将其嵌入到图像中，可以与嵌入的水印同时压缩图像。 本发明涉及一种用于嵌入鲁棒水印的方法，该方法将水印嵌入到图像中之后嵌入从原始伪随机序列偏移距离d的随机序列循环，以及一种用于通过使用水印生成和嵌入水印的方法 在图像的MPEG压缩处理期间量化DCT系数。

公开(公告)号：US07140043B2

公开(公告)日：2006-11-21

申请号：US10821550

申请日：2004-04-08

申请人： Jong-Uk Choi ,  Won-Ha Lee ,  Seung-Won Shin

发明人： Jong-Uk Choi ,  Won-Ha Lee ,  Seung-Won Shin

IPC分类号： H04L9/00 ,  G06K9/36 ,  G06K9/38

CPC分类号： G10L19/018

摘要： A method for embedding and detecting watermark by a quantization of a characteristic value of a signal is disclosed. In order to embed watermark, first, a signal which will be watermarked is segmented in a predetermined time period, and a characteristic value with regard to a signal within the frame obtained therefrom is evaluated in a predetermined manner. Quantized values within a set corresponding to a value of pattern information embedded into the frame among a plurality of sets including one or more quantized value respectively is compared with each characteristic value so as to determine a quantized value closest to the characteristic value. The intensity of insertion used for modifying the signal within the frame in order to make the characteristic value same as the determined quantized value is evaluated, and the signal within the frame is modified based on the evaluated intensity of insertion. The watermark detection is performed in a similar process as the embedment. Accordingly, a method for embedding and detecting watermark which is especially suitable for authentication of audio signals is provided.

摘要翻译： 公开了一种通过信号特征值的量化来嵌入和检测水印的方法。 为了嵌入水印，首先，将在预定时间段内分割将被加水印的信号，并且以预定的方式评估关于其中获得的帧内的信号的特征值。 将与包含一个或多个量化值的多个集合中嵌入到帧中的模式信息的值相对应的集合内的量化值与每个特征值进行比较，以确定最接近该特征值的量化值。 评估用于修改帧内的信号以使得与所确定的量化值相同的特征值的插入强度，并且基于所评估的插入强度来修改帧内的信号。 以类似于嵌入的过程进行水印检测。 因此，提供了一种特别适合音频信号认证的嵌入和检测水印的方法。

公开(公告)号：US20050002526A1

公开(公告)日：2005-01-06

申请号：US10821550

申请日：2004-04-08

申请人： Jong-Uk Choi ,  Won-Ha Lee ,  Seung-Won Shin

发明人： Jong-Uk Choi ,  Won-Ha Lee ,  Seung-Won Shin

IPC分类号： G06K9/00 ,  G10L19/018 ,  G10L25/51 ,  H04N7/167

CPC分类号： G10L19/018

摘要： A method for embedding and detecting watermark by a quantization of a characteristic value of a signal is disclosed. In order to embed watermark, first, a signal which will be watermarked is segmented in a predetermined time period, and a characteristic value with regard to a signal within the frame obtained therefrom is evaluated in a predetermined manner. Quantized values within a set corresponding to a value of pattern information embedded into the frame among a plurality of sets including one or more quantized value respectively is compared with each characteristic value so as to determine a quantized value closest to the characteristic value. The intensity of insertion used for modifying the signal within the frame in order to make the characteristic value same as the determined quantized value is evaluated, and the signal within the frame is modified based on the evaluated intensity of insertion. The watermark detection is performed in a similar process as the embedment. Accordingly, a method for embedding and detecting watermark which is especially suitable for authentication of audio signals is provided.

摘要翻译： 公开了一种通过信号特征值的量化来嵌入和检测水印的方法。 为了嵌入水印，首先，将在预定时间段内分割将被加水印的信号，并且以预定的方式评估关于其中获得的帧内的信号的特征值。 将与包含一个或多个量化值的多个集合中嵌入到帧中的模式信息的值相对应的集合内的量化值与每个特征值进行比较，以确定最接近该特征值的量化值。 评估用于修改帧内的信号以使得与所确定的量化值相同的特征值的插入强度，并且基于所评估的插入强度来修改帧内的信号。 以类似于嵌入的过程进行水印检测。 因此，提供了一种特别适合音频信号认证的嵌入和检测水印的方法。