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1. 发明申请

WO2006061601A9 BLOCK-BASED WATERMARKING 审中-公开
标题翻译：基于块的水印
公开(公告)号：WO2006061601A9
公开(公告)日：2009-07-30
申请号：PCT/GB2005004682
申请日：2005-12-07
申请人： SONY UK LTD , TAPSON DANIEL WARREN , HOOPER DANIEL LUKE
发明人： TAPSON DANIEL WARREN , HOOPER DANIEL LUKE
IPC分类号： G06T1/00
CPC分类号： H04N21/23892 , G06T1/005 , G06T2201/0051 , G06T2201/0061 , G06T2201/0065 , G06T2201/0083
摘要： A water marked image frame for conveying a payload data word is generated by combining at least one image frame with a two-dimensional water mark pattern. Comprising a plurality of regions, each including a two dimensional water mark block selected from a predetermined set of possible water mark blocks to represent the value of the associated payload data symbol. The payload data is detected by correlating each region of the water marked image frame with each block from of the set of water marked blocks, to form for each region a set of probability surfaces, each of which is combined with a distortion probability value for each region and for each of the water mark blocks which may be present in the region thus forming for each region, for each of the possible values of the payload symbol a probability value that that region includes that symbol value and therefrom generating an estimate of the payload data.
摘要翻译：通过将至少一个图像帧与二维水印图案组合来产生用于传送有效载荷数据字的水印图像帧。包括多个区域，每个区域包括从预定的一组可能的水印块中选择的二维水印块，以表示相关联的有效载荷数据符号的值。通过将水印图像帧的每个区域与该组标记水印块的每个块相关联来检测有效载荷数据，以便为每个区域形成一组概率表面，每个区域与每个区域的失真概率值对于可能存在于区域中的每个水印块的每个水印块，对于每个区域，对于有效载荷符号的每个可能的值，该区域包括该符号值并从而生成有效载荷的估计的概率值数据。

2. 发明专利

JP2003235016A DATA PROCESSING APPARATUS 审中-公开
公开(公告)号：JP2003235016A
公开(公告)日：2003-08-22
申请号：JP2002239758
申请日：2002-08-20
申请人： SONY UK LTD
发明人： TAPSON DANIEL WARREN
IPC分类号： G06T1/00 , H04N1/387 , H04N5/21 , H04N7/08 , H04N7/081
摘要： PROBLEM TO BE SOLVED: To provide a data processing apparatus which detects distortion of a data signal caused in the case of e.g. recording or transmitting the data signal and eliminates the detected distortion. SOLUTION: The data processing apparatus comprises: a conversion means for generating the prescribed number of frequency bands from a data signal; a means for generating at least first and second template signals; a means for embedding the first and second template signals respectively to first and second frequency bands; a means for detecting distortion caused in the data signal on the basis of a relative frequency change between versions of the template signals restored from the first and second frequency bands of the data signal; and a means for eliminating the detected distortion of the data signal. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2003178296A DATA PROCESSOR 审中-公开
公开(公告)号：JP2003178296A
公开(公告)日：2003-06-27
申请号：JP2002239759
申请日：2002-08-20
申请人： SONY UK LTD
发明人： TAPSON DANIEL WARREN
IPC分类号： G06T3/00 , G06T1/00 , G06T5/00 , G06T5/10 , H04N1/40 , H04N7/08 , H04N7/081
摘要： PROBLEM TO BE SOLVED: To provide a data processor and data processing method capable of correcting distortion of an image by detecting the distortion of the image. SOLUTION: This data processor detects nonlinear distortion applied to an image embedded with a template signal having mutually the prescribed relationship at least in first and second frequency bands. The data processor has an image dividing processor for forming data for expressing a selected part of the image, a transform detecting processor for forming at least one linear transform parameter for expressing linear transformation applied to the selected respective parts of the image, and a nonlinear transform processor for estimating the nonlinear transform parameter for expressing the nonlinear distortion caused in the image from the linear transform parameter of at least two parts of the image. The nonlinear distortion of the image can be estimated on the basis of the nonlinear transform parameter of an image part determined from a change in a relative frequency between the template signals restored from the first and second bands of the image. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP2002305730A METHOD AND APPARATUS FOR EMBEDDING DATA AND FOR DETECTING AND RECOVERING EMBEDDED DATA 审中-公开
公开(公告)号：JP2002305730A
公开(公告)日：2002-10-18
申请号：JP2001375052
申请日：2001-12-07
申请人： SONY UK LTD
发明人： KEATING STEPHEN MARK , PELLY JASON , TAPSON DANIEL WARREN , DAVID MORGAN WILLIAM AMOS , STONE JONATHAN JAMES
IPC分类号： G06T1/00 , G09C5/00 , G10L11/00 , H04N1/32 , H04N1/387 , H04N7/08 , H04N7/081 , H04N7/24 , H04N7/26
摘要： PROBLEM TO BE SOLVED: To provide a method and apparatus for embedding data in information material the data being a plurality of data items each having a different relative importance within a capacity of the apparatus for embedding data. SOLUTION: The apparatus for embedding data comprises an encoding processor to encode each of data items, and a combining processor operable to combine encoded data items with the information material. The information material provides a limited data embedding capacity, as a result for example of the limited bandwidth of the information material itself. Each of the data items are encoded and embedded to the effect that a proportion of the limited data embedding capacity is allocated to the encoded data items in accordance with the relative importance of these data items. As such, the quantity of error protection allowed to each of the data items can be arranged in accordance with the importance of the data items, whilst still satisfying the limited data embedding capacity. Accordingly, a greater amount of protection can be allowed to the more important data items.

5. 发明专利

JP2002305650A APPARATUS FOR DETECTING AND RECOVERING DATA 审中-公开
公开(公告)号：JP2002305650A
公开(公告)日：2002-10-18
申请号：JP2001375051
申请日：2001-12-07
申请人： SONY UK LTD
发明人： PELLY JASON CHARLES , KEATING STEPHEN MARK , TAPSON DANIEL WARREN
IPC分类号： G06T1/00 , H04N1/387 , H04N5/91 , H04N7/08 , H04N7/081 , H04N7/24 , H04N7/26
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for detecting and recovering data by increasing the space for a transform domain for embedding the data. SOLUTION: The data are embedded in material by using at least one transform domain representation to modulate a predetermined data sequence to form modulated data and combining the modulated data with the material. This data detecting and recovering apparatus comprises a transform processor operable to transform the material into the transform domain representation of information material, and a correlation processor operable to correlate transform domain data symbols for extracting the modulated data from modulation domain display with a reproduced version of the predetermined data sequence to form a correlation output signal and to recover the embedded data from the correlation output signal. The correlation processor is operable to repeat the correlation for transform domain data symbols and data symbols of the predetermined data sequence for each of a plurality of start positions in the transform domain.

6. 发明专利

DE60319661T2 未知
公开(公告)号：DE60319661T2
公开(公告)日：2009-04-02
申请号：DE60319661
申请日：2003-11-20
申请人： SONY UK LTD
发明人： PELLY JASON CHARLES , TAPSON DANIEL WARREN
IPC分类号： G06T1/00 , H04N1/32 , H04N1/387 , H04N1/40 , H04N7/08 , H04N7/081
摘要： A data processing apparatus is operable to identify one of a plurality of code words present in a watermarked version of a material item. The marked version is formed by combining each of a plurality of parts of a code word with one of a plurality of units from which the material item is comprised. The apparatus comprises a recovery processor operable to recover at least one part of the code word from a corresponding unit of the marked material item, and a correlator. The correlator is operable to generate for the marked material unit, a dependent correlation value for the part of the code word recovered from the material unit and the corresponding part of at least one of the re-generated code words from the set. A detector is operable to determine whether at least one of the code words is present in the marked material item from the dependent correlation value for the part of the code word exceeding a predetermined threshold. The data processor may detect the presence of the code word with improved probability, in particular when parts of the material have been corrupted.

7. 发明专利

GB2394611A Metadata generation providing a quasi-unique reference value 未知
公开(公告)号：GB2394611A
公开(公告)日：2004-04-28
申请号：GB0224443
申请日：2002-10-21
申请人： SONY UK LTD
发明人： WILLIAMS MICHAEL JOHN , TAPSON DANIEL WARREN
IPC分类号： G09G5/00 , H04N7/24
摘要： An audio/video generation apparatus comprises an audio and/or video generation device operable to generate audio and/or video material, and a metadata generation processor. The metadata generation processor is operable to generate metadata describing the content and/or attributes of the audio/video material. The metadata generation processor is operable to generate a reference value providing a quasi-unique reference to the audio/video material with a reduced amount of data than the audio/video material itself the reference value being generated from data values representing the audio/video material in accordance with a predetermined relationship. The quasi-unique reference may be stored in association with the metadata describing the audio/video material from which the quasi-unique reference was generated. Generating a quasi-unique reference from the information material provides a facility for identifying the audio/video material. In one embodiment the quasi-unique reference is a hash value. The hash value provides a quasi-unique reference, which can be efficiently searched in order to identify the audio/video material. Accordingly, metadata, which describes the content or attributes of the audio/video material, may be uniquely or quasi uniquely associated with the information material.

8. 发明专利

GB2379114A Introducing test signals into a data signal 未知
公开(公告)号：GB2379114A
公开(公告)日：2003-02-26
申请号：GB0120331
申请日：2001-08-21
申请人： SONY UK LTD
发明人： TAPSON DANIEL WARREN
IPC分类号： G06T1/00 , H04N1/387 , H04N5/21 , H04N7/08 , H04N7/081 , H04N17/00
摘要： Apparatus to combine template signals into first and second frequency bands of a data signal, where the test signals have a predetermined relationship. By detecting an amount of relative frequency change of the test signals recovered from each of the frequency bands, an indication of the distortion applied to the data signal can be determined. Accordingly, there is disclosed a data processing apparatus for detecting distortion of a data signal to which a test signal has been introduced into different frequency bands of the signal. The apparatus comprises a frequency component processor operable to generate data representative of the frequency components of the first and the second frequency bands of the data signal, and a detection processor operable to identify the distortion of the data signal in accordance with a relative frequency change between the versions of the recovered test signal. If the data signal is an image, the Wavelet transform can be used to transform the image into the Wavelet domain. In the Wavelet domain, the test signal can be introduced into the Wavelet bands. Correspondingly, the distortion to an image can be identified from a relative change in frequency of the test signal between the bands. The distortion can be interpreted as a transform applied to the image, such as an Affine transform. By evaluating the transform parameters the distortion to the image can be removed by applying an inverse transform according to the determined transform.

9. 发明专利

GB2369945A Method of embedding watermark information according to relative importance 未知
公开(公告)号：GB2369945A
公开(公告)日：2002-06-12
申请号：GB0029856
申请日：2000-12-07
申请人： SONY UK LTD
发明人： KEATING STEPHEN MARK , PELLY JASON CHARLES , TAPSON DANIEL WARREN , DAVID MORGAN WILLIAM AMOS , STONE JONATHAN JAMES
IPC分类号： G06T1/00 , H04N1/32 , H04N7/24
摘要： An apparatus for embedding data in information material, the data being a plurality of data items 175.1 - 175.3 each having a different relative importance, comprises an encoding processor C-P operable to encode each of said data items, and a combining processor (237,Figure 3) operable to combine said encoded data items with information material. The information material provides a limited data embedding capacity, as a result for example of the limited bandwidth of the information material itself. Each of the data items are encoded and embedded to the effect that a proportion of the limited data embedding capacity is allocated to the encoded data items in accordance with the relative importance of these data items. For example, an amount of error protection given to each of the data items can be arranged in accordance with the importance of the data items, whilst still satisfying the limited data embedding capacity. The data may be embedded in the wavelet transform domain.

10. 发明专利

DE60231025D1 未知
公开(公告)号：DE60231025D1
公开(公告)日：2009-03-19
申请号：DE60231025
申请日：2002-12-11
申请人： SONY UK LTD
发明人： PELLY JASON CHARLES , TAPSON DANIEL WARREN
IPC分类号： G06T1/00 , H04N1/32 , H04N1/387 , H04N1/41 , H04N5/91
摘要： A watermarking system comprises an encoding data processor operable to generate at least one marked version of an original item of material by introducing one of a predetermined set of code words into a copy of the original material item. The code words are generated from a pseudo-random number generator initialised with a seed value. The seed value is used to identify the marked material item, from the code word produced from the seed value. The watermarking system also includes a detecting data processor operable to identify a particular marked copy of the material item by recovering a code word from the marked material item and correlating all code words in the set of code words with the recovered code word. The detecting data processing apparatus also includes a registration processor operable to associate samples of the original material item with corresponding samples of the marked material item to which corresponding code word coefficients may have been added. By registering the original material item with the marked material item, a likelihood of correctly identifying the version of the marked material item is improved, reducing a false negative detection probability.

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