WO2006030509A1 - 画像検索装置、画像検索方法、画像作成装置、画像作成方法、プログラム - Google Patents
画像検索装置、画像検索方法、画像作成装置、画像作成方法、プログラム Download PDFInfo
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- WO2006030509A1 WO2006030509A1 PCT/JP2004/013549 JP2004013549W WO2006030509A1 WO 2006030509 A1 WO2006030509 A1 WO 2006030509A1 JP 2004013549 W JP2004013549 W JP 2004013549W WO 2006030509 A1 WO2006030509 A1 WO 2006030509A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
- G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
- G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
- G06F16/583—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using metadata automatically derived from the content
Definitions
- Image search device image search method, image creation device, image creation method, program
- the present invention relates to an image search technique, an image creation technique, and a program, and more particularly to a technique effective when applied to a video search technique in a recording device such as a video, a personal computer, or a video server.
- the first search method may be to create an elapsed time of a series of recorded videos or a scene name conversion table corresponding to the elapsed time, and perform a search by elapsed time or scene name.
- Patent Document 1 As another second search method, there is a technique disclosed in Patent Document 1. That is, in this patent document 1, a still image of the beginning of a series of videos to be recorded or a scene representative of the series of videos is created and held as an index image, and a plurality of index images are displayed to search for a search target video. I was going. In addition, in order to search for multiple scenes in a series of videos, still images of multiple scenes in the video (for example, video every hour divided by the time length of the video information into n equal parts) are indexed images ( A thumbnail screen was created, and a search using this index image was performed.
- the elapsed time is a search key. Therefore, when editing or falsification such as replacement of a part of video is performed, the scene to be searched is specified. There was a technical problem that was not possible.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-76460
- An object of the present invention is to provide an image search technique that can reliably search for target image information that is not affected by editing or falsification of image information.
- Another object of the present invention is to provide an image search technique capable of quickly searching for target image information related to the data amount of the image information.
- Another object of the present invention is to provide an image search technique capable of quickly searching for image information on a computer with good operability similar to that for handling general books and printed materials. There is.
- a first aspect of the present invention is an identification information detection means for extracting the identification information from image information in which the identification information is embedded as confidential information.
- Search condition input means for inputting a search condition of the image information
- Search determination means for searching the image information based on the identification information and the search condition
- An image search apparatus including
- a second aspect of the present invention is an image information input means for inputting image information
- Search condition power of the image information Search condition detection means for inputting the search condition from a print medium on which search image information embedded as S steganography is printed,
- an image search device including: search determination means for searching for the image information based on the search condition.
- a third aspect of the present invention is an identification information detection means for extracting the identification information from image information in which the identification information is embedded as confidential information.
- Identification information determination means for determining whether the image information is falsified based on the identification information in the image information
- An image search apparatus including
- a fourth aspect of the present invention provides image information in which identification information is embedded as confidential information. Inputting from the medium;
- An image search method including
- the fifth aspect of the present invention is the step of inputting image information embedded as identification information power S steganography from an image medium;
- a sixth aspect of the present invention includes a step of inputting image information
- Search condition power of the image information Print medium power on which the search image information embedded as S steganography is printed Input the search conditions;
- An image search method including
- a seventh aspect of the present invention provides an input means for inputting image information
- Steganography embedding means for embedding identification information used for searching the image information into the image information as steganography that is not lost by analogization of the image information;
- Image output means for outputting the image information in which the steganography is embedded to an image medium
- An image creating apparatus is provided.
- An eighth aspect of the present invention is the step of inputting image information
- Embedding identification information used for searching the image information in the image information as steganography that is not lost by analogization of the image information
- An image creation method including
- a ninth aspect of the present invention provides a computer that constitutes an image search device
- a step of searching for the image information based on the identification information and the search condition is provided.
- a tenth aspect of the present invention provides a computer for controlling an image creating apparatus
- Embedding identification information used for searching the image information in the image information as steganography that is not lost even by analogy of the image information
- identification information is embedded as confidential information such as steganography when image information such as video is recorded, and image information is searched using the embedded identification information as a search key. . Since identification information is directly embedded in the video, it is possible to search for video editing and falsification. Furthermore, since steganography embedded in image information is used as identification information of the image information, the identification information is not lost even if the image information is converted into an analog signal. For this reason, as a recording device that holds the image information to be searched, video tapes etc. that can be used only with digital recording devices such as HDD (Hard Disk Drive), DVD (Digital Versatile Disk), CD (Compact Disk), etc. are recorded. An analog recording device used as a medium can be used.
- identification information is embedded in image information by steganography and this identification information is searched, it is possible to search for image information that is not affected by editing or falsification of the image information.
- name information such as a scene name corresponding to the identification information is stored at the time of recording, and a video is searched using the scene name as a search key at the time of search. You can search for videos.
- image information in which identification information is embedded as steganography is printed on a print medium such as a card or sheet, and a target image is printed by flipping over the card or sheet like a book or magazine when searching.
- a print medium such as a card or sheet
- a target image is printed by flipping over the card or sheet like a book or magazine when searching.
- the video information to be searched is, for example, a monitoring image that may be used as evidence, it is necessary to prove the originality (no tampering).
- the originality can be confirmed by the presence or absence of identification information embedded in image information by steganography, it can be used not only for searching image information but also for determining whether or not image information has been tampered with. It becomes.
- FIG. 1 is a conceptual diagram showing an example of the operation of an image search apparatus that performs an image search method according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing an example of the configuration of an image search apparatus according to an embodiment that implements an image search method according to an embodiment of the present invention.
- FIG. 3 is a block diagram showing an example of an internal configuration of an image search apparatus according to an embodiment of the present invention.
- FIG. 4 is a conceptual diagram showing an example of a configuration of a computer system used for realizing an image search apparatus according to an embodiment of the present invention.
- FIG. 5 is a conceptual diagram showing a modification of the image search device according to the embodiment of the present invention.
- FIG. 6 is a conceptual diagram showing an example of the operation of the image creation device and the image search device according to the embodiment of the present invention.
- FIG. 7 is a flowchart showing an example of the operation of the image search apparatus according to the embodiment of the present invention. Is.
- FIG. 8 is a conceptual diagram showing a modification of the image search device according to the embodiment of the present invention.
- FIG. 9 is a conceptual diagram showing an example of the operation of an image search device that performs an image search method according to another embodiment of the present invention.
- FIG. 10 is a block diagram showing an example of a configuration of an image search apparatus according to an embodiment of the present invention.
- FIG. 11 is a block diagram showing an example of the configuration of an image search apparatus according to still another embodiment of the present invention.
- FIG. 12 is a conceptual diagram showing an example of the configuration of an image creating apparatus according to still another embodiment of the present invention.
- FIG. 13 is a flowchart showing an example of the operation of the image creating apparatus according to the embodiment of the present invention.
- FIG. 14 is a flowchart showing an example of the operation of the image creating apparatus according to the embodiment of the present invention.
- image medium is an arbitrary storage medium such as a print medium such as paper, a communication medium such as an information communication line, a semiconductor memory, an optical storage medium, or a magnetic storage medium. It is a concept that encompasses storage media.
- FIG. 1 is a conceptual diagram illustrating an example of the operation of an image search apparatus that performs an image search method according to an embodiment of the present invention.
- FIG. 2 is an image search method according to an embodiment of the present invention.
- FIG. 3 is a block diagram showing an example of the internal configuration of the image search apparatus according to the present embodiment, and
- FIG. 4 is a block diagram showing the configuration of the image search apparatus according to the embodiment.
- FIG. 5 is a conceptual diagram showing an example of the configuration of a computer system used to realize an image search device in a state
- FIG. 5 is a conceptual diagram showing a modification of the image search device of the present embodiment
- FIG. 7 is a flowchart showing an example of the operation of the image search apparatus according to the present embodiment.
- the search target image data 31 held in the image medium 30 such as a video data server includes an image by a steganography S described later.
- ID32 is embedded as confidential information.
- a video name-ID conversion table 71 in which an image ID 32 and a video name 72 such as a scene name are recorded in association with each other is also created.
- the image data 31 of the image medium 30 that is the search target is also transmitted through the image data 11 without losing the image quality of the image data 31.
- the identification information (image ID 32) uniquely assigned to the image data 31 is recorded in a mixed manner as steganography S, which is confidential information, in a state that cannot be discriminated with the naked eye of a human who browses the image.
- the steganography S of the present embodiment embeds arbitrary information in a concealed state in the image data 31 by using the visual characteristic of the human eye that sensitivity varies depending on the color and size of the object, as will be described later. Technology.
- steganography S divides image data 31 into a plurality of blocks, and almost distinguishes individual blocks and / or feature information between blocks by, for example, human vision.
- the image ID 32 is coded and embedded in the image data 31 by operating within the range where it cannot be done.
- the feature information of a block or a sub-block obtained by further subdividing the block includes image data 31 such as positional relationship between individual blocks, brightness and darkness, image graininess, saturation, density centroid, and variance. Any value that can be obtained can be used.
- the image search device 20 As illustrated in FIG. 2, the image search device 20 according to the present embodiment that searches for image information from the image medium 30 converts analog image data 31 input from the image medium 30 into digital data.
- the search determination unit 23 is extracted from the image data 31 by the steganography ID detection unit 22.
- the image ID 32 is compared with the image ID 25 input by the search condition input unit 24 and they match, the image data 31 in which the image ID 32 is embedded is used as the search result 33, and any arbitrary image not shown. An operation of outputting to an image medium or an image display device is performed.
- the steganography ID detection unit 22 decomposes the image data 31 in which the steganography S is embedded into a plurality of image blocks 3 la, and selects and extracts them according to a predetermined rule.
- a code conversion unit 22e that outputs as an image ID 32 is provided.
- the image search apparatus 20 having such a configuration can be realized by, for example, the computer system 40 illustrated in FIG. 4 and the search control program 60 executed by the computer system 40.
- the computer system 40 includes a micro computer 41 that controls the whole, a main memory 42 that stores information such as programs and data executed by the microprocessor 41, and the programs and data.
- Non-volatile storage device 43 in which information such as information is stored permanently, image information input unit 44 for inputting image data 31 from an arbitrary image medium 30, and output of image data 31 to an arbitrary image medium 30 Image information output unit 45, a display 46 for visualizing and displaying information such as image data 31, etc., a keyboard 47 used for information input by the user, a voice input device 49 used for voice input by the user, and these It is equipped with a nose 48 as an information transmission line that connects each part of the system.
- the non-volatile storage device 43 stores a search control program 60 for realizing the functions of the respective units of the image search device 20. Then, the search control program 60 is loaded into the main memory 42 and executed by the microprocessor 41, whereby the functions of each part of the image search device 20 are realized.
- the search result 33 may be displayed and output on the display 46, or may be stored in an arbitrary image medium 30 via the image information output unit 45 as necessary. That is, when the image search device 20 illustrated in FIG. 2 is realized by the computer system 40 illustrated in FIG. 4, the image configuration unit 21 corresponds to the image information input unit 44, and the search condition The input unit 24 corresponds to the keyboard 47, and other functions are realized by the search control program 60.
- information of the image ID 25 is set in the search condition input unit 24 by a method such as user key input (step 101).
- the analog image data 31 is digitized from the image medium 30 via the image construction unit 21 and then input to the steganography ID detection unit 22 (step 102), and the steganography ID detection unit In 22, the image ID 32 is detected from the steganography S included in the image data 31 (step 103).
- the image ID 32 detected by the steganography ID detection unit 22 is collated with the image ID 25 set by the search condition input unit 24 (step 104). Then, it is determined that the image data 31 of the image data 31 is strong, and the image data 31 including the image ID 32 is output to the display 46 or a desired image medium (step 105). If the IDs do not match in step 104, nothing is done.
- the image ID 32 is embedded in the image data 31 by the steganography S at the time of video recording, and is registered in the image medium 30 such as a video data server. Then, a search is performed using the image ID 32 embedded in the image data 31 as a search key.
- the image ID 32 is directly embedded in the image data 31, it is possible to perform an accurate search without being affected by editing or falsification of the image data 31. Further, by using steganography S for embedding the image ID 32, the image ID 32 does not disappear even if the image data 31 recorded on the image medium 30 is converted into an analog signal. Images stored on analog image media 30 such as analog video tapes as well as digital image media 30 such as HDDs, DVDs, and CDs. Data 31 can be searched.
- the image ID 25 is directly input to the search condition input unit 24.
- the image ID 25 such as a number or a symbol is used as a search key
- editing such as changing the order of the image data 31 is performed. If the search is performed, it may be difficult to directly search for the image data 31 to be searched.
- the search condition input unit 24 of the image search device 20 is provided with a video name ID conversion unit 70.
- the video name ID conversion unit 70 reads out and uses the video name-ID conversion table 71 generated when the image data 31 is recorded from the image medium 30 in which the image data 31 is stored. As illustrated, the video name 72 input from the external camera is converted into a corresponding image ID 32 and input to the search determination unit 23.
- the search target video can be easily searched by searching the image data 31 using the video name 72 such as a scene name that is easy for the user to search at the time of search. Improved operability.
- the image search device 20 is provided with a search condition input unit 24-1 including an audio conversion unit 80 and a video name ID conversion unit 70.
- a search condition input unit 24-1 including an audio conversion unit 80 and a video name ID conversion unit 70.
- the user When searching the image data 31 in the image search device 20, the user inputs the video name 72 such as the target scene name by the voice input 81 to the voice conversion unit 80 of the search condition input unit 24-1.
- the voice input 81 is changed to the video name 72 by voice recognition.
- the image ID-ID conversion unit 70 identifies the image ID 32 from the video name 72 and inputs it to the search determination unit 23 to perform a search.
- the search of the image data 31 can be executed by voice input, the workability in the search operation is improved.
- FIG. 9 is a conceptual diagram illustrating an example of the operation of an image search apparatus that performs an image search method according to another embodiment of the present invention
- FIG. 10 illustrates an image search apparatus according to the present embodiment. It is a block diagram which shows an example of a structure.
- the image search device 20A includes a search condition input unit 24-2 including a steganography ID detection unit 24a instead of the search condition input unit 24. Is different.
- specific image data 3 to be searched is stored in the search card 10.
- the image data 11 related to 1 is printed, and the image ID 12 corresponding to the image ID 32 embedded in the image data 31 is embedded in the image data 11 by the steganography S1.
- the user selects the target search card 10 using the image data 11 of the search card 10 as a mark, and sets it in the search condition input unit 24-2 of the image search device 20A. Then, the steganography ID detection unit 24a detects the steganography S1 (image ID 12) in the image data 11 and inputs it to the search determination unit 23 as a search key.
- the search determining unit 23 searches the image data 31 by comparing the image ID 32 in the image data 31 with the image ID 12 input from the search card 10. Execute.
- the search card 10 on which the target image data 11 is printed is selected from a plurality of search cards 10 and the search card 10 is stored in the image search device 20A in the same way as when searching through printed materials.
- the image data 31 input from the image medium 30 can be searched simply by reading it, so that the search time can be shortened and the operability is greatly improved.
- FIG. 11 shows an example of the configuration of an image search apparatus according to still another embodiment of the present invention.
- the image construction unit 21 that converts analog image data 31 input from the image medium 30 into digital data, and the image ID 32 recorded as steganography S are extracted from the image data 31.
- the steganography ID detection unit 22 includes a falsification determination unit 23-1 that outputs a falsification detection result 33 a based on whether or not the image ID 32 is detected by the steganography S in the steganography ID detection unit 22.
- this image search device 20B based on whether or not the image ID 32 is embedded in the image data 31, the presence or absence of falsification in the image data 31 is reliably determined. When used as evidence for subject monitoring, etc., it is necessary to prove the originality of the image data 31, that is, no falsification.
- the image data 31 to be stored is embedded in the image ID 32 by steganography S at the time of video recording on the image medium 30, so that the falsification determination unit 23-1 uses the image ID 32 of the image data 31.
- the falsification determination unit 23-1 uses the image ID 32 of the image data 31.
- FIG. 12 is a conceptual diagram showing an example of the configuration of an image creating apparatus that is still another embodiment of the present invention.
- the image creating apparatus 50 according to this embodiment is configured so that an image ID 31 and an image ID 32 are mixed as steganography S in advance with the image data 31 in order to perform search and falsification detection according to each of the above-described embodiments.
- the operation to output to 30 is performed.
- the image creation device 50 of the present embodiment embeds the steganography S in the image data 31 based on the principle of the codei illustrated in FIG.
- the image creating apparatus 50 steganographically scans an image input unit 51 for inputting image data 31 from the image medium 30 and an image ID 32 that is uniquely set for the image data 31 in the image data 31.
- a steganography embedding unit 52 for embedding and an image output unit 53 for outputting the image data 31 embedded with the steganography S to the original image medium 30 or another image medium 30 are provided.
- the steganography embedding unit 52 includes a block decomposing unit 52a, a block extracting unit 52b, a block calorie unit 52c, an image composing unit 52d, an averaging unit 52e, a code generating unit 52f, and image processing information generating Part 52g and a code input part 52h.
- Information such as an image ID 32 to be embedded as steganography S in the image data 31 is set or input from the outside to the code input unit 52h.
- the block decomposing unit 52a and the block extracting unit 52b divide the image data 31 digitized by the image input unit 51 into a plurality of blocks, individually extract them according to a predetermined rule, and send them to the averaging unit 52e and the block processing unit 52c. Send it out.
- the averaging unit 52e normalizes, for example, the brightness level of each image block 31a.
- the code generator 52f divides the image block 3la, which has been normalized by the averaging unit 52e, into two left and right sub-blocks, and assigns 0 or 1 to the code block to which 0 or 1 is assigned depending on which of the left and right sub-blocks is brighter. And output to the image processing information generation unit 52g.
- the image cache information generation unit 52g brightness of the left and right sub-blocks of the image block 3la so that the image ID 32 set in the code input unit 52h is finally reflected in the steganography S. Is used as it is or reversed to correspond to the image ID 32, and the discrimination result is instructed to the block processing unit 52c.
- the block force check unit 52c adjusts the brightness of the left and right sub-blocks with respect to the image block 31a coming from the block extraction unit 52b.
- the processing to embed the steganography S representing the image ID 32 set in the code input unit 52h in the image data 31 is performed by performing the force to maintain the image ID or the reverse processing to correspond to the image ID 32.
- the image ID 32 can be embedded in the image data 31 as steganography S without being noticed by the user, that is, without degrading the image quality of the image data 31. Since the image block 31a is handled as a unit, stable coding can be realized with little variation in the feature information used in steganography S even for analog output to printing or display.
- a plurality of the same image IDs 32 are redundantly embedded in the image data 31 as steganography S, and a plurality of image IDs detected from the image data 31 are detected at the time of detection.
- One image ID 32 may be finally determined by a majority of 32.
- the image construction unit 52d composes the original image data 31 by arranging a plurality of image blocks 31a, converts them to analog if necessary, and outputs them to an arbitrary image medium 30 via the image output unit 53. To help.
- the steganography S embedded in the image data 31 by the image creation device 50 or the like is decoded by the steganography ID detection unit 22 of the image search device 20 or the like, and the image ID 32 is detected.
- the image creation device 50 can be realized by the computer system 40 in FIG. 3 described above and the image data creation program 61 that is mounted on the computer system 40 and executed by the microprocessor 41. .
- the image input unit 51 corresponds to the image information input unit 44
- the image output unit 53 corresponds to the image information output unit 45
- the steganography embedding unit 52 corresponds to the image data creation program 61.
- the image ID 32 of the image data 31 to be created is initially set in the code input unit 52h of the steganography embedding unit 52 (step 111).
- the image ID 32 can be changed over time in synchronization with the input of the image data 31.
- a time stamp a serial number incremented in synchronization with the input of the image data 31 is used.
- Etc. can be used.
- the video name 72 such as a scene name may be input by voice input and recorded together with the image ID 32 in the video name-ID conversion table 71.
- step 112 input (photographing) of the image data 31 is started (step 112), and the image ID 32 is embedded in the input image data 31 as steganography S and output to a desired image medium (step 113).
- step 114 Check whether there is a change in the setting state of image ID32 (step 114). If there is a change, return to the setting step of image ID32 in step 111 and return to image ID3. Set 2 and continue to input image data 31.
- step 114 If it is determined in step 114 that there is no change in the image ID 32, it is determined whether or not the input of the image data 31 is completed (step 115). If not completed, the process returns to step 112 to return to the image. Continue to input data 31. If completed, complete creation (shooting) of image data 31.
- step 121 and step 122 for printing output of the search card 10 are added between steps 11 3 and 114 in the flowchart of FIG. 13 described above. It is different from FIG.
- step 121 it is determined whether or not there is an instruction to output a search image (image data 11), that is, an instruction to print output to the search card 10 from the user who has created the image data 31. If there is an output instruction, in step 122, for example, after image ID 12 equal to image ID 32 corresponding to image data 31 is embedded as steganography S1 in image data 11 such as one scene of image data 31. Print on search card 10.
- the search card 10 printed in this way is used for searching the image data 31 in the image search device 20A of FIG. 10 as described above.
- the image search technique of the present embodiment it is possible to perform an accurate search without being affected by editing or falsification of the image data 31, and it is possible to provide a video search with less burden on the user.
- the image ID 32 is directly embedded in the image data 31 as the steganography S, an accurate search that is not affected by editing or falsification of the image data 31 becomes possible. Further, since the image ID 32 is embedded in the image data 31 as the steganography S, it is effective in preventing falsification of the image data 31 in which the image ID 32 is not lost even if the image data 31 is converted into an analog signal.
- image data 11 serving as a search mark and image ID 12 embedded in steganography S1 in the image data 11 are printed on the search card 10 or sheet, and the user is allowed to select this search card 10. Therefore, it can be used as search key information, and the search time of the user can be shortened and the operability can be improved.
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Priority Applications (4)
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EP04773196A EP1811401A4 (en) | 2004-09-16 | 2004-09-16 | IMAGE-SCREENING, IMAGE-SEARCHING, PICTURE-GENERATING DEVICE, PICTURE-PRODUCING PROCESS AND PROGRAM |
JP2006534993A JPWO2006030509A1 (ja) | 2004-09-16 | 2004-09-16 | 画像検索装置、画像検索方法、画像作成装置、画像作成方法、プログラム |
PCT/JP2004/013549 WO2006030509A1 (ja) | 2004-09-16 | 2004-09-16 | 画像検索装置、画像検索方法、画像作成装置、画像作成方法、プログラム |
US11/681,382 US20070147658A1 (en) | 2004-09-16 | 2007-03-02 | Image search apparatus, image search method, image production apparatus, image production method and program |
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PCT/JP2004/013549 WO2006030509A1 (ja) | 2004-09-16 | 2004-09-16 | 画像検索装置、画像検索方法、画像作成装置、画像作成方法、プログラム |
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US11/681,382 Continuation US20070147658A1 (en) | 2004-09-16 | 2007-03-02 | Image search apparatus, image search method, image production apparatus, image production method and program |
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KR100932537B1 (ko) * | 2007-11-26 | 2009-12-17 | 한국전자통신연구원 | 이미지 필터를 이용한 포렌식 증거 분석 시스템 및 방법 |
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Also Published As
Publication number | Publication date |
---|---|
EP1811401A1 (en) | 2007-07-25 |
EP1811401A4 (en) | 2009-04-15 |
US20070147658A1 (en) | 2007-06-28 |
JPWO2006030509A1 (ja) | 2008-05-08 |
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