WO2009090752A1 - Electronic data display system, image display, and electronic data display method - Google Patents

Electronic data display system, image display, and electronic data display method Download PDF

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Publication number
WO2009090752A1
WO2009090752A1 PCT/JP2008/050613 JP2008050613W WO2009090752A1 WO 2009090752 A1 WO2009090752 A1 WO 2009090752A1 JP 2008050613 W JP2008050613 W JP 2008050613W WO 2009090752 A1 WO2009090752 A1 WO 2009090752A1
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WO
WIPO (PCT)
Prior art keywords
image
page
image analysis
analysis information
display
Prior art date
Application number
PCT/JP2008/050613
Other languages
French (fr)
Japanese (ja)
Inventor
Takeshi Morimoto
Original Assignee
Nec Display Solutions, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nec Display Solutions, Ltd. filed Critical Nec Display Solutions, Ltd.
Priority to PCT/JP2008/050613 priority Critical patent/WO2009090752A1/en
Priority to JP2009549942A priority patent/JP5140876B2/en
Publication of WO2009090752A1 publication Critical patent/WO2009090752A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
    • G06F3/1438—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display using more than one graphics controller
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90—Details of database functions independent of the retrieved data types
    • G06F16/95—Retrieval from the web
    • G06F16/957—Browsing optimisation, e.g. caching or content distillation
    • G06F16/9574—Browsing optimisation, e.g. caching or content distillation of access to content, e.g. by caching
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background

Definitions

  • the present invention relates to an electronic material display system that includes a plurality of display devices and displays electronic materials having the same contents on each display device.
  • Japanese Patent Application Laid-Open No. 2006-512593 discloses a system in which a computer and a plurality of projectors are connected via a network.
  • a plurality of projectors are installed in separate rooms, and each projector projects electronic material provided from a computer.
  • the amount of data in the electronic material is large (for example, in the case of electronic material including image information), it takes time to process transmission / reception of the electronic material between the computer and each projector. It takes a long time from inputting the instruction until the electronic material is displayed on each projector. Such display delay of the electronic material is not very preferable for the user of the system.
  • the above-mentioned traffic increases by connecting a computer to one projector and connecting an external storage device storing electronic materials to the other projectors, and manually operating the display of electronic materials on other projectors. And the display delay problem can be solved. However, in this case, since the display of the electronic material is manually operated, a different page may be displayed by mistake.
  • An object of the present invention is to provide an electronic material presentation system, an image display device, and an electronic material presentation method that can solve the above-described problems.
  • the electronic material presentation system of the present invention provides A first display device connected to an external terminal storing electronic materials composed of a plurality of pages having different display contents, and displaying an image of any page of the electronic material supplied from the external terminal;
  • An external storage device is connected, the image of each page of the electronic material stored in the external storage device is analyzed to acquire image analysis information for identifying each page, and the acquired image analysis information is
  • at least one second display device that stores the page in association with identifiable information in a table,
  • the first display device is connected to the second display device via a network, analyzes an image of the displayed page, acquires image analysis information for identifying the display page, and acquires the acquired image.
  • the second display device searches the table based on the image analysis information of the display page sent out by the first display device, specifies a page corresponding to the display page, and data of the specified page Is acquired from the external storage device, and an image based on the acquired data is displayed.
  • the image display device of the present invention includes: An image display device is connected to an external terminal storing electronic materials consisting of a plurality of pages with different display contents, and displays an image of any page of the electronic material supplied from the external terminal, A communication unit to which another image display device is connected via a network; An image analysis unit that analyzes an image of the displayed page and acquires image analysis information for identifying the display page; A control unit that sends the image analysis information obtained by the image analysis unit to the network through the communication unit.
  • Another image display device of the present invention is An image display device to which an external storage device storing electronic materials consisting of a plurality of pages with different display contents is connected, An image analysis unit for analyzing the image of each page of the electronic material stored in the external storage device and acquiring image analysis information for identifying each page; A control unit that stores the image analysis information acquired by the image analysis unit in a table in association with information that can identify each page; Another image display device that displays an image of any page of the electronic material is connected via a network, and The communication unit receives image analysis information related to a display image of any page of the electronic material from the other image display device, The control unit searches the table based on the image analysis information received by the communication unit, specifies a page corresponding to the display image, acquires data of the specified page from the external storage device, An image based on the acquired data is displayed.
  • the electronic material presentation method of the present invention includes: A first image display device to which an external terminal storing electronic materials consisting of a plurality of pages having different display contents is connected, and at least one second image to which an external storage device storing the electronic materials is connected.
  • An electronic material presentation method performed in a system in which a display device is connected via a network The second image display device analyzes the image of each page of the electronic material stored in the external storage device to acquire image analysis information for identifying each page, and the acquired image analysis information Is stored in the table in association with information that can identify each page, Image analysis information for the first image display device to display an image of any page of the electronic material supplied from the external terminal and analyze the image of the display page to identify the display page And sending the acquired image analysis information to the network, The second image display device searches the table based on the image analysis information of the display page sent out by the first image display device, specifies a page corresponding to the display page, and specifies the specified page Are acquired from the external storage device, and an image based on the acquired data is displayed.
  • FIG. 3 is a schematic diagram illustrating an example of an image projected by the projector illustrated in FIG. 2. It is a schematic diagram which shows the result of having extracted the outline of the image shown in FIG. It is a schematic diagram which shows the example which divided the outline extraction image shown in FIG. 5 into 16. It is an enlarged view which shows an example of the division area shown in FIG.
  • FIG. 1 is a block diagram showing a configuration of an electronic material display system according to an embodiment of the present invention.
  • the electronic document display system includes two projectors 101 and 102 connected via a LAN (local area network) 103, a personal computer (PC) 106 connected to the projector 101, and a data storage connected to the projector 102.
  • Device 107 is a block diagram showing a configuration of an electronic material display system according to an embodiment of the present invention.
  • the electronic document display system includes two projectors 101 and 102 connected via a LAN (local area network) 103, a personal computer (PC) 106 connected to the projector 101, and a data storage connected to the projector 102.
  • PC personal computer
  • the PC 106 is a presenter terminal used by the presenter.
  • the presenter terminal includes a computer system having a communication function that operates according to a program.
  • the main part of the computer system is a storage device for storing programs and data, an input device such as a keyboard and a mouse, a display device such as a CRT and an LCD, a communication device such as a modem for communicating with the outside, and an output device such as a printer.
  • a control device that receives an input from the input device and controls operations of the communication device, the output device, and the display device.
  • Data relating to the electronic material for presentation is stored in the storage device of the PC 106 in advance.
  • the electronic material for presentation consists of a plurality of pages with different display contents, and the image data of each page is stored in the storage device of the PC 106 as electronic material for presentation.
  • the control device reads out the electronic material data designated by the input from the input device from the storage device and transmits it to the projector 101.
  • the data storage device 107 is a storage device represented by a semiconductor memory or the like, and includes an interface unit for transmitting / receiving data to / from an external device.
  • the data storage device 107 stores the same data as the electronic material for presentation stored in the PC 106.
  • Projectors 101 and 102 are network projectors each having a communication function for transmitting and receiving data to and from an external device through a network.
  • the projectors 101 and 102 are installed at different locations.
  • the projector 101 projects an image 104 based on the image signal supplied from the PC 106 on the screen.
  • the projector 102 reads an image 105 corresponding to the image 104 from the data storage device 107 and projects it on the screen. By projecting the same image as the images 104 and 105, participants in different places can hold a meeting while viewing the same material.
  • FIG. 2 is a block diagram showing the configuration of the projector 101.
  • the main part of the projector 101 includes an image analysis unit 602, a control unit 603, a memory 604, and a communication unit 605.
  • the image analysis unit 602 performs image analysis of the image data 601 supplied from the PC 106.
  • the image analysis result (image analysis information) is supplied from the image analysis unit 602 to the control unit 603.
  • the communication unit 605 is connected to an external device via a LAN and transmits / receives data to / from the external device.
  • the control unit 603 controls the overall operation of the projector 101 and transmits the image analysis result supplied from the image analysis unit 602 to the projector 102 via the communication unit 605. In addition, the control unit 603 writes the image data supplied from the PC 106 in the image memory 606.
  • the memory 604 is for storing programs and data necessary for operating the projector 101.
  • the image memory 606 is a frame memory, for example. In the projector 101, an image based on the image data stored in the image memory 606 is projected on the screen by the projection optical system.
  • FIG. 3 is a block diagram showing the configuration of the projector 102.
  • the main part of the projector 102 includes an external storage device interface 701, an image analysis unit 702, a control unit 703, a memory 704, a communication unit 705, and an image memory 706.
  • the external storage device interface 701 is connected to the data storage device 107 shown in FIG. 1 which is an external storage device.
  • the image analysis unit 702 reads the electronic material for presentation from the data storage device 107 through the external storage device interface 701, and performs image analysis of each page of the read electronic material for presentation.
  • the image analysis result is supplied from the image analysis unit 702 to the control unit 703.
  • the communication unit 705 receives the image analysis result from the projector 101.
  • the image analysis result received from the projector 101 is supplied from the communication unit 705 to the control unit 703.
  • the control unit 703 controls the operation of the entire projector 102 and compares the image analysis result of the designated page received from the projector 101 via the communication unit 705 with the image analysis result of each page by the image analysis unit 702. In this comparison, when the image analysis result of the designated page matches any of the image analysis results of each page, the control unit 703 acquires image data related to the page with the matching analysis result from the data storage device 107. The control unit 703 writes the acquired image data in the image memory 706.
  • the memory 704 stores programs and data necessary for operating the projector 102.
  • the image memory 706 is a frame memory, for example. In the projector 102, an image based on the image data stored in the image memory 706 is projected on the screen by the projection optical system.
  • image analysis processing by contour detection is performed on electronic material data (image data).
  • FIG. 4 shows an example of the image 104 projected by the projector 101.
  • This image 104 is an image in which the letter “A” of the alphabet is displayed on the entire screen. In the image analysis process, the contour of the image “A” is extracted.
  • the image analysis unit 602 generates image data D2 by removing high-frequency components (edge components) of the image data D1 supplied from the PC 106, and subtracts the image data D2 from the original image data D1. Can be obtained.
  • FIG. 5 shows the result of extracting the contour of the image shown in FIG. In the example shown in FIG. 5, the edge portion of the character “A” is extracted.
  • the image analysis unit 602 divides the contour extraction image of the character “A” shown in FIG.
  • FIG. 6 schematically shows an example in which the contour extraction image of the character “A” is divided into 16 parts.
  • the contour extraction image is divided into 16 areas of 4 rows and 4 columns.
  • the codes indicating rows (vertical positions) are A to D, and the codes indicating columns (horizontal positions) are 1 to 4.
  • the image analysis unit 602 calculates the area of the contour portion for each area.
  • FIG. 7 shows an enlarged view of the area of the vertical position A and the horizontal position 3 in the area configuration shown in FIG.
  • the image analysis unit 602 calculates the area of the black portion (contour portion) in the area shown in FIG.
  • the control unit 603 After calculating the area of the contour portion for all the areas, the control unit 603 sends the image analysis result including the calculation result of the area of the contour portion of each area by the image analysis unit 602 to the LAN line via the communication unit 605. Send it out.
  • the image analysis result includes area position information (for example, “A-1”) and the calculation result of the area of the contour portion in the area.
  • Image analysis by the image analysis unit 602 and transmission of the image analysis result to the LAN line are executed each time an image signal is supplied from the PC 106 to the projector 101 (every time the content of the projected image 104 is switched). In a period until the image subjected to the image analysis process is switched to another image, the image analysis unit 602 sends the image analysis result to the LAN line once or always.
  • the image analysis process of the image analysis unit 702 is the same as the image analysis process of the image analysis unit 602. However, the image analysis unit 702 performs image analysis on each page of the electronic material for presentation stored in the data storage device 107.
  • the image analysis unit 702 In the image analysis of each page, the image analysis unit 702 generates a contour extraction image, divides the contour extraction image into 16 areas, and calculates the area of the contour portion in each area. Then, the image analysis unit 702 supplies an image analysis result including area position information (for example, “A-1”) and the calculation result of the area of the contour portion in the area to the control unit 703 for each page.
  • area position information for example, “A-1”
  • FIG. 8 shows an example of a table storing image analysis results for each page.
  • the table shown in FIG. 8 is an example of an image analysis result when the contour extraction image is divided into 16 areas.
  • the table includes items of page numbers (0, 1, 2,%) That are identification information for specifying pages, and items indicating area position information (for example, “A-1”). Every time, the calculation result of the area of the contour portion of each area is stored.
  • the page number corresponds to the number of each page of the electronic material for presentation stored in the data storage device 107.
  • FIG. 9 is a flowchart showing the operation of the projector 101 to which the presenter terminal is connected. Hereinafter, the operation will be described with reference to FIG. 1, FIG. 2 and FIG.
  • step S10 When the image data is supplied from the PC 106 to the projector 101 (“YES” in step S10), first, the control unit 603 stores the supplied image data in the image memory 606. Thereby, an image based on the image data from the PC 106 is projected (step S11).
  • the image analysis unit 602 performs contour extraction processing on the image data supplied from the PC 106 (step S12). Then, the image analysis unit 602 divides the contour extraction image obtained by the contour extraction processing into a plurality of areas (step S13), and calculates the area of the contour portion in each area (step S14).
  • control unit 603 sends an image analysis result including information on the area of the contour portion in each area calculated by the image analysis unit 602 to the LAN line through the communication unit 605.
  • the projector 102 is connected to the LAN 103, and network connection settings are made so that communication with the projector 101 is possible.
  • the network connection setting is a connection setting in a general LAN.
  • a data storage device 107 is connected to the projector 102, and a table is created in the memory 704 that stores image analysis results for each page of the electronic material for presentation stored in the data storage device 107.
  • FIG. 10 is a flowchart showing the operation of the projector 102. Hereinafter, the operation will be described with reference to FIG. 1, FIG. 3, and FIG.
  • the control unit 703 stores the image analysis result received from the projector 101 in the table stored in the memory 704. It is checked whether there is a matching page (step S21).
  • the control unit 703 If there is a page that matches the image analysis result from the projector 101, the control unit 703 reads the image data of the page from the data storage device 107 (step S22). Then, the control unit 703 stores the read image data in the image memory 706. As a result, an image based on the image data read from the data storage device 107 is projected (step S23). This projection image is the same image as the projection image of the projector 101.
  • control unit 703 If there is no match in the table, the control unit 703 writes image data for displaying a predetermined error message indicating that in the image memory 706. As a result, a predetermined error message is displayed on the projection screen.
  • the PC 106 storing electronic materials consisting of a plurality of pages with different display contents is connected to the projector 101, and the data storage device 107 storing the electronic materials is used as the projector. 102.
  • the control unit 603 displays an image of any page of the electronic material supplied from the PC 106, and the image analysis unit 602 analyzes the displayed page image to identify the display page. Image analysis information is acquired. Then, the control unit 603 sends the image analysis information acquired by the image analysis unit 602 onto the LAN 103.
  • the image analysis unit 702 obtains image analysis information for identifying each page by analyzing the image of each page of the electronic material stored in the data storage device 107, and the control unit 703.
  • the acquired image analysis information is stored in a table in association with information capable of specifying each page.
  • the control unit 703 searches the table based on the image analysis information from the projector 101 to identify the page corresponding to the display page, acquires the data of the identified page from the data storage device 107, and Display an image based on the acquired data.
  • the image 105 having the same content as the image 104 displayed on the projector 101 is automatically displayed on the projector 102. Therefore, for example, when a video conference, a telephone conference, or the like is performed based on the same material, it is possible to suppress a page feed error of the material, and as a result, a smooth conference is possible.
  • electronic materials are supplied from the PC 106 to the projector 101, and electronic materials are supplied from the data storage device 107 to the projector 102.
  • Electronic materials are connected between the PC and each projector through a network. There is no need to send or receive.
  • the data transmitted / received between the projectors is image analysis information, and the amount of data of the image analysis information is smaller than the image data of the page of the electronic material. Therefore, there is no problem of increase in network traffic or display delay of electronic materials.
  • image analysis processing by contour detection is used as image analysis processing in each projector, but the present invention is not limited to this. Any image analysis process may be used as long as the page can be specified.
  • Applicable image analysis processing includes, for example, image analysis processing using luminance information and color information of image data.
  • Image analysis processing using luminance information will be described.
  • an average luminance level (APL) obtained by averaging the luminance levels of the pixels of the page image is calculated, and the calculation result is used as image analysis information for the page.
  • APL average luminance level
  • the APL of the entire image may be obtained, or the image may be divided into a plurality of areas and the APL of each area may be calculated.
  • the image analysis unit 602 performs image analysis processing using luminance information on an image based on the image data supplied from the PC 106. Then, the control unit 603 sends the image analysis result to the LAN through the communication unit 605.
  • the image analysis unit 702 performs image analysis processing using luminance information on an image based on image data regarding each page of the electronic material for presentation stored in the data storage device 107. Then, the control unit 703 stores the image analysis result in a table in the memory 704.
  • the display operation in the projectors 101 and 102 is the same as the procedure shown in FIGS.
  • the color information includes first color information related to the number of colors of the image and second color information based on the color difference signal.
  • the number of colors indicated by each pixel of the page image is counted, and the count result is used as image analysis information for the page.
  • counting the number of colors the number of colors in the entire image may be counted, or the image may be divided into a plurality of areas and the number of colors in each area may be counted.
  • the image analysis unit 602 performs image analysis processing based on the first color information on an image based on the image data supplied from the PC 106. Then, the control unit 603 sends the image analysis result to the LAN through the communication unit 605. On the other hand, in the projector 102, the image analysis unit 702 performs image analysis processing based on the first color information on the image based on the image data regarding each page of the electronic material for presentation stored in the data storage device 107. Then, the control unit 703 stores the image analysis result in a table in the memory 704.
  • the display operation in the projectors 101 and 102 is the same as the procedure shown in FIGS.
  • each of red, blue, and green is expressed in 256 levels.
  • the number of colors that can be displayed by the pixels is [256 ⁇ 256 ⁇ 256] types.
  • the number of colors indicated by each pixel is calculated.
  • an average of two color difference signals (RY signal and BY signal) representing the color indicated by each pixel of the image of the page is calculated, and the calculation result is calculated as the calculation result.
  • the average value of the color difference signals used as page image analysis information.
  • the average value of the color difference signals of the entire image may be calculated, or the image may be divided into a plurality of areas, and the average value of the color difference signals may be calculated for each area. .
  • the image analysis unit 602 performs image analysis processing based on the second color information on the image based on the image data supplied from the PC 106. Then, the control unit 603 sends the image analysis result to the LAN through the communication unit 605. On the other hand, in the projector 102, the image analysis unit 702 performs image analysis processing based on the second color information on the image based on the image data regarding each page of the electronic material for presentation stored in the data storage device 107. Then, the control unit 703 stores the image analysis result in a table in the memory 704.
  • the display operation in the projectors 101 and 102 is the same as the procedure shown in FIGS.
  • FIG. 1 For example, in the system shown in FIG. 1, two projectors are used, but the present invention is not limited to this. Three or more projectors may be connected via a LAN. When the system is configured by three or more projectors, one projector has the configuration shown in FIG. 2, and the other projectors have the configuration shown in FIG.
  • each projector may have the functions shown in FIGS.
  • At least two pieces of information such as contour information, luminance information, and color information may be used.
  • FIG. 11 shows the configuration of the projector 101 that performs image analysis processing using contour information and luminance information.
  • the projector 101 shown in FIG. 11 has the same configuration as that shown in FIG. 2 except that image analysis units 602 a and 602 b are provided instead of the image analysis unit 602.
  • Image data from the PC 106 is supplied to each of the image analysis units 602a and 602b.
  • the image analysis unit 602a is the same as the image analysis unit 602 shown in FIG. 2, and performs contour extraction processing on the image data supplied from the PC 106, and divides the obtained contour extraction image into a plurality of areas. Then, the area of the contour portion in each area is calculated.
  • the image analysis unit 602b performs image analysis processing based on the luminance information described above on the image data supplied from the PC 106. Each image analysis result by the image analysis units 602a and 602b is supplied to the control unit 603.
  • the control unit 603 sends the image analysis results of the image analysis units 602a and 602b to the LAN line via the communication unit 605.
  • FIG. 12 shows the configuration of the projector 102 that performs image analysis processing using contour information and luminance information.
  • the projector 102 shown in FIG. 12 has the same configuration as that shown in FIG. 3 except that image analysis units 702a and 702b are provided instead of the image analysis unit 702.
  • the image analysis units 702a and 702b are connected to the data storage device 107 via the external storage device interface 701.
  • the image analysis unit 702a is the same as the image analysis unit 702 shown in FIG. 3, reads out the electronic material for presentation from the data storage device 107, and performs image analysis of each page of the read electronic material for presentation.
  • the image analysis result is supplied from the image analysis unit 702 to the control unit 703.
  • the image analysis unit 702b reads the electronic material for presentation from the data storage device 107, and performs the image analysis process based on the luminance information described above on the image indicated by the image data of each page of the read electronic material for presentation.
  • the image analysis result is supplied from the image analysis unit 702 to the control unit 703.
  • the control unit 703 stores the image analysis result regarding each page from the image analysis units 702a and 702b in a table in the memory 704.
  • the display operation in the projectors 101 and 102 is the same as the procedure shown in FIGS.
  • the electronic material presentation system in each of the above-described embodiments includes a plurality of projectors connected via a network, but the present invention is not limited to this.
  • an image display device such as a liquid crystal display or a plasma display may be used.
  • the image display device to which the presenter terminal is connected has the configuration shown in FIG. 2
  • the image display device to which the external storage device (data storage device) is connected has the configuration shown in FIG.

Abstract

An electronic data display system capable of solving problems with an increase in network traffic and a delay in the display of electronic data and automatically adjusting the display page is provided. The electronic data display system has a projector (101) to which a PC (106) where the electronic data is stored is connected and a projector (102) to which a data storage device (107) where the electronic data is stored is connected. The projector (101) displays an image of any of the pages of the electronic data supplied from the PC (106) and sends out the image analysis information of the displayed image onto a LAN (103). The projector (102) associates the image analysis information of each of the pages of the electronic data stored in the data storage device (107) with information capable of identifying the pages to store it in a table and searches the table to identify the page corresponding to the displayed image on the basis of the image analysis information sent out by the projector (101).

Description

電子資料表示システム、画像表示装置および電子資料表示方法Electronic material display system, image display device, and electronic material display method
　本発明は、複数の表示装置を備え、同じ内容の電子資料を各表示装置にて表示する電子資料表示システムに関する。 The present invention relates to an electronic material display system that includes a plurality of display devices and displays electronic materials having the same contents on each display device.
　特開２００６－５１２５９３号公報には、コンピュータと複数のプロジェクタがネットワークを介して接続されたシステムが開示されている。このシステムでは、複数のプロジェクタを別々の部屋に設置し、それぞれのプロジェクタが、コンピュータから提供された電子資料を投写する。 Japanese Patent Application Laid-Open No. 2006-512593 discloses a system in which a computer and a plurality of projectors are connected via a network. In this system, a plurality of projectors are installed in separate rooms, and each projector projects electronic material provided from a computer.
　しかしながら、特開２００６－５１２５９３号公報に記載のシステムにおいては、コンピュータが、電子資料を各プロジェクタへ一度に送信するため、ネットワークのトラフィックが増大してデータ通信が切断される場合がある。 However, in the system described in Japanese Patent Application Laid-Open No. 2006-512593, since the computer transmits electronic materials to each projector at once, network traffic may increase and data communication may be disconnected.
　加えて、電子資料のデータ量が多い場合（例えば、画像情報を含む電子資料の場合）は、コンピュータと各プロジェクタとの間における、電子資料の送受信の処理に時間を要するため、コンピュータにて送信指示を入力してから各プロジェクタにて電子資料が表示されるまでの時間が長くなる。このような電子資料の表示遅延は、システムの利用者にとってあまり好ましくない。 In addition, if the amount of data in the electronic material is large (for example, in the case of electronic material including image information), it takes time to process transmission / reception of the electronic material between the computer and each projector. It takes a long time from inputting the instruction until the electronic material is displayed on each projector. Such display delay of the electronic material is not very preferable for the user of the system.
　なお、コンピュータを一つのプロジェクタに接続し、他のプロジェクタには電子資料を格納した外部記憶装置を接続する形態とし、他のプロジェクタにおける電子資料の表示を手動により操作することで、上記のトラフィック増大や表示遅延の問題を解決することができる。しかし、この場合は、手動により電子資料の表示を操作するため、誤って違うページを表示する場合がある。 The above-mentioned traffic increases by connecting a computer to one projector and connecting an external storage device storing electronic materials to the other projectors, and manually operating the display of electronic materials on other projectors. And the display delay problem can be solved. However, in this case, since the display of the electronic material is manually operated, a different page may be displayed by mistake.
　本発明の目的は、上記の問題を解決することのできる、電子資料提示システム、画像表示装置および電子資料提示方法を提供することにある。 An object of the present invention is to provide an electronic material presentation system, an image display device, and an electronic material presentation method that can solve the above-described problems.
　上記目的を達成するため、本発明の電子資料提示システムは、
　表示内容が異なる複数のページからなる電子資料が格納された外部端末が接続され、該外部端末から供給される前記電子資料のいずれかのページの画像を表示する第１の表示装置と、
　外部記憶装置が接続され、該外部記憶装置に格納された前記電子資料の各ページの画像を解析してそれぞれのページを識別するための画像解析情報を取得し、該取得した画像解析情報をそれぞれのページを特定可能な情報と対応付けてテーブルに格納する、少なくとも一つの第２の表示装置と、を有し、
　前記第１の表示装置は、前記第２の表示装置がネットワークを介して接続され、表示したページの画像を解析して該表示ページを識別するための画像解析情報を取得し、該取得した画像解析情報を前記ネットワーク上に送出し、
　前記第２の表示装置が、前記第１の表示装置が送出した前記表示ページの画像解析情報に基づいて前記テーブルを検索して前記表示ページに対応するページを特定し、該特定したページのデータを前記外部記憶装置から取得し、該取得したデータに基づく画像を表示する。 In order to achieve the above object, the electronic material presentation system of the present invention provides
A first display device connected to an external terminal storing electronic materials composed of a plurality of pages having different display contents, and displaying an image of any page of the electronic material supplied from the external terminal;
An external storage device is connected, the image of each page of the electronic material stored in the external storage device is analyzed to acquire image analysis information for identifying each page, and the acquired image analysis information is And at least one second display device that stores the page in association with identifiable information in a table,
The first display device is connected to the second display device via a network, analyzes an image of the displayed page, acquires image analysis information for identifying the display page, and acquires the acquired image. Send analysis information to the network,
The second display device searches the table based on the image analysis information of the display page sent out by the first display device, specifies a page corresponding to the display page, and data of the specified page Is acquired from the external storage device, and an image based on the acquired data is displayed.
　また、本発明の画像表示装置は、
　表示内容が異なる複数のページからなる電子資料が格納された外部端末が接続され、該外部端末から供給される前記電子資料のいずれかのページの画像を表示する画像表示装置であって、
　他の画像表示装置がネットワークを介して接続される通信部と、
　表示したページの画像を解析して該表示ページを識別するための画像解析情報を取得する画像解析部と、
　前記画像解析部にて得した画像解析情報を、前記通信部を通じて前記ネットワーク上に送出する制御部と、を有する。 Moreover, the image display device of the present invention includes:
An image display device is connected to an external terminal storing electronic materials consisting of a plurality of pages with different display contents, and displays an image of any page of the electronic material supplied from the external terminal,
A communication unit to which another image display device is connected via a network;
An image analysis unit that analyzes an image of the displayed page and acquires image analysis information for identifying the display page;
A control unit that sends the image analysis information obtained by the image analysis unit to the network through the communication unit.
　また、本発明の別の画像表示装置は、
　表示内容が異なる複数のページからなる電子資料が格納された外部記憶装置が接続される画像表示装置であって、
　前記外部記憶装置に格納された前記電子資料の各ページの画像を解析してそれぞれのページを識別するための画像解析情報を取得する画像解析部と、
　前記画像解析部にて取得した画像解析情報をそれぞれのページを特定可能な情報と対応付けてテーブルに格納する制御部と、
　前記電子資料のいずれかのページの画像を表示する他の画像表示装置がネットワークを介して接続される通信部と、を有し、
　前記通信部は、前記電子資料のいずれかのページの表示画像に関する画像解析情報を前記他の画像表示装置から受信し、
　前記制御部は、前記通信部にて受信した画像解析情報に基づいて前記テーブルを検索して前記表示画像に対応するページを特定し、該特定したページのデータを前記外部記憶装置から取得し、該取得したデータに基づく画像を表示させる。 Another image display device of the present invention is
An image display device to which an external storage device storing electronic materials consisting of a plurality of pages with different display contents is connected,
An image analysis unit for analyzing the image of each page of the electronic material stored in the external storage device and acquiring image analysis information for identifying each page;
A control unit that stores the image analysis information acquired by the image analysis unit in a table in association with information that can identify each page;
Another image display device that displays an image of any page of the electronic material is connected via a network, and
The communication unit receives image analysis information related to a display image of any page of the electronic material from the other image display device,
The control unit searches the table based on the image analysis information received by the communication unit, specifies a page corresponding to the display image, acquires data of the specified page from the external storage device, An image based on the acquired data is displayed.
　また、本発明の電子資料提示方法は、
　表示内容が異なる複数のページからなる電子資料が格納された外部端末が接続される第１の画像表示装置と、前記電子資料が格納された外部記憶装置が接続される少なくとも一つの第２の画像表示装置とがネットワークを介して接続されるシステムにおいて行われる電子資料提示方法であって、
　前記第２の画像表示装置が、前記外部記憶装置に格納された前記電子資料の各ページの画像を解析してそれぞれのページを識別するための画像解析情報を取得し、該取得した画像解析情報をそれぞれのページを特定可能な情報と対応付けてテーブルに格納し、
　前記第１の画像表示装置が、前記外部端末から供給される前記電子資料のいずれかのページの画像を表示し、該表示ページの画像を解析して該表示ページを識別するための画像解析情報を取得し、該取得した画像解析情報を前記ネットワーク上に送出し、
　前記第２の画像表示装置が、前記第１の画像表示装置が送出した前記表示ページの画像解析情報に基づいて前記テーブルを検索して前記表示ページに対応するページを特定し、該特定したページのデータを前記外部記憶装置から取得し、該取得したデータに基づく画像を表示する。 In addition, the electronic material presentation method of the present invention includes:
A first image display device to which an external terminal storing electronic materials consisting of a plurality of pages having different display contents is connected, and at least one second image to which an external storage device storing the electronic materials is connected. An electronic material presentation method performed in a system in which a display device is connected via a network,
The second image display device analyzes the image of each page of the electronic material stored in the external storage device to acquire image analysis information for identifying each page, and the acquired image analysis information Is stored in the table in association with information that can identify each page,
Image analysis information for the first image display device to display an image of any page of the electronic material supplied from the external terminal and analyze the image of the display page to identify the display page And sending the acquired image analysis information to the network,
The second image display device searches the table based on the image analysis information of the display page sent out by the first image display device, specifies a page corresponding to the display page, and specifies the specified page Are acquired from the external storage device, and an image based on the acquired data is displayed.
本発明の一実施形態である電子資料表示システムの構成を示すブロック図である。It is a block diagram which shows the structure of the electronic material display system which is one Embodiment of this invention. 図１に示す電子資料表示システムを構成する、発表者端末が接続されるプロジェクタの構成を示すブロック図である。It is a block diagram which shows the structure of the projector which comprises the electronic material display system shown in FIG. 1, and a presenter terminal is connected. 図１に示す電子資料表示システムを構成する、データ記憶装置が接続されるプロジェクタの構成を示すブロック図である。It is a block diagram which shows the structure of the projector which comprises the data storage device which comprises the electronic material display system shown in FIG. 図２に示すプロジェクタによって投写される画像の一例を示す模式図である。FIG. 3 is a schematic diagram illustrating an example of an image projected by the projector illustrated in FIG. 2. 図４に示す画像の輪郭を抽出した結果を示す模式図である。It is a schematic diagram which shows the result of having extracted the outline of the image shown in FIG. 図５に示す輪郭抽出画像を１６分割した例を示す模式図である。It is a schematic diagram which shows the example which divided the outline extraction image shown in FIG. 5 into 16. 図６に示す分割エリアの一例を示す拡大図である。It is an enlarged view which shows an example of the division area shown in FIG. 電子資料の各ページの画像解析結果が格納されるテーブルの一例を示す図である。It is a figure which shows an example of the table in which the image analysis result of each page of electronic material is stored. 発表者用端末が接続されるプロジェクタの動作を示すフローチャートである。It is a flowchart which shows operation | movement of the projector to which the terminal for presenters is connected. データ記憶装置が接続されるプロジェクタの動作を示すフローチャートである。It is a flowchart which shows operation | movement of the projector to which a data storage device is connected. 輪郭情報および輝度情報を用いた画像解析処理を行う、発表者用端末が接続されるプロジェクタの構成を示すブック図である。It is a book figure which shows the structure of the projector to which the terminal for presenters is connected which performs the image analysis process using outline information and brightness | luminance information. 輪郭情報および輝度情報を用いた画像解析処理を行う、データ記憶装置が接続されるプロジェクタの構成を示すブック図である。It is a book figure which shows the structure of the projector to which the data storage device which performs the image analysis process using outline information and brightness | luminance information is connected.
符号の説明Explanation of symbols
１０１、１０２　プロジェクタ
１０３　ＬＡＮ（ローカルエリアネットワーク）
１０４、１０５　画像
１０６　パーソナルコンピュータ（ＰＣ）
１０７　データ記憶装置 101, 102 Projector 103 LAN (Local Area Network)
104, 105 Image 106 Personal computer (PC)
107 Data storage device
　以下、本発明における一実施形態を、図面を参照して説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
　図１は、本発明の一実施形態である電子資料表示システムの構成を示すブロック図である。電子資料表示システムは、ＬＡＮ（ローカルエリアネットワーク）１０３を介して接続された２台のプロジェクタ１０１、１０２と、プロジェクタ１０１に接続されたパーソナルコンピュータ（ＰＣ）１０６と、プロジェクタ１０２に接続されたデータ記憶装置１０７とを有する。 FIG. 1 is a block diagram showing a configuration of an electronic material display system according to an embodiment of the present invention. The electronic document display system includes two projectors 101 and 102 connected via a LAN (local area network) 103, a personal computer (PC) 106 connected to the projector 101, and a data storage connected to the projector 102. Device 107.
　ＰＣ１０６は、発表者によって使用される発表者端末である。発表者端末は、プログラムにより動作する通信機能を備えたコンピュータシステムよりなる。コンピュータシステムの主要部は、プログラムやデータなどを蓄積する記憶装置、キーボードやマウスなどの入力装置、ＣＲＴやＬＣＤなどの表示装置、外部との通信を行うモデムなどの通信装置、プリンタなどの出力装置および入力装置からの入力を受け付けて通信装置、出力装置、表示装置の動作を制御する制御装置から構成される。 The PC 106 is a presenter terminal used by the presenter. The presenter terminal includes a computer system having a communication function that operates according to a program. The main part of the computer system is a storage device for storing programs and data, an input device such as a keyboard and a mouse, a display device such as a CRT and an LCD, a communication device such as a modem for communicating with the outside, and an output device such as a printer. And a control device that receives an input from the input device and controls operations of the communication device, the output device, and the display device.
　発表用電子資料に関するデータがＰＣ１０６の記憶装置に予め格納される。発表用電子資料は、表示内容の異なる複数のページからなり、各ページの画像データが発表用電子資料としてＰＣ１０６の記憶装置に格納される。ＰＣ１０６では、制御装置が、入力装置からの入力にて指定された電子資料データを記憶装置から読み出してプロジェクタ１０１に送信する。 Data relating to the electronic material for presentation is stored in the storage device of the PC 106 in advance. The electronic material for presentation consists of a plurality of pages with different display contents, and the image data of each page is stored in the storage device of the PC 106 as electronic material for presentation. In the PC 106, the control device reads out the electronic material data designated by the input from the input device from the storage device and transmits it to the projector 101.
　データ記憶装置１０７は、半導体メモリなどに代表される記憶装置であって、外部装置との間でデータを送受信するためのインタフェース部を備えている。データ記憶装置１０７には、ＰＣ１０６に格納された発表用電子資料と同じデータが格納されている。 The data storage device 107 is a storage device represented by a semiconductor memory or the like, and includes an interface unit for transmitting / receiving data to / from an external device. The data storage device 107 stores the same data as the electronic material for presentation stored in the PC 106.
　プロジェクタ１０１、１０２は、いずれもネットワークを通じて外部装置との間でデータを送受信するための通信機能を備えたネットワークプロジェクタである。本実施形態では、プロジェクタ１０１、１０２は、別々の場所に設置されている。 Projectors 101 and 102 are network projectors each having a communication function for transmitting and receiving data to and from an external device through a network. In the present embodiment, the projectors 101 and 102 are installed at different locations.
　プロジェクタ１０１は、ＰＣ１０６から供給される画像信号に基づく画像１０４をスクリーン上に投写する。プロジェクタ１０２は、画像１０４に対応する画像１０５をデータ記憶装置１０７から読み出してスクリーン上に投写する。画像１０４、１０５として同一の画像を投写することで、別々の場所に居る参加者が、同一資料を見ながら会議を行うことができる。 The projector 101 projects an image 104 based on the image signal supplied from the PC 106 on the screen. The projector 102 reads an image 105 corresponding to the image 104 from the data storage device 107 and projects it on the screen. By projecting the same image as the images 104 and 105, participants in different places can hold a meeting while viewing the same material.
　図２は、プロジェクタ１０１の構成を示すブロック図である。図２を参照すると、プロジェクタ１０１の主要部は、画像解析部６０２、制御部６０３、メモリ６０４および通信部６０５からなる。 FIG. 2 is a block diagram showing the configuration of the projector 101. Referring to FIG. 2, the main part of the projector 101 includes an image analysis unit 602, a control unit 603, a memory 604, and a communication unit 605.
　画像解析部６０２は、ＰＣ１０６から供給された画像データ６０１の画像解析を行う。画像解析結果（画像解析情報）は、画像解析部６０２から制御部６０３に供給される。通信部６０５は、ＬＡＮを介して外部装置と接続され、外部装置との間でデータを送受信する。 The image analysis unit 602 performs image analysis of the image data 601 supplied from the PC 106. The image analysis result (image analysis information) is supplied from the image analysis unit 602 to the control unit 603. The communication unit 605 is connected to an external device via a LAN and transmits / receives data to / from the external device.
　制御部６０３は、プロジェクタ１０１全体の動作を制御する他、画像解析部６０２から供給された画像解析結果を通信部６０５経由でプロジェクタ１０２に送信する。また、制御部６０３は、ＰＣ１０６から供給された画像データを画像メモリ６０６に書き込む。 The control unit 603 controls the overall operation of the projector 101 and transmits the image analysis result supplied from the image analysis unit 602 to the projector 102 via the communication unit 605. In addition, the control unit 603 writes the image data supplied from the PC 106 in the image memory 606.
　メモリ６０４は、プロジェクタ１０１を動作させるために必要なプログラムやデータを格納するためのものである。画像メモリ６０６は例えばフレームメモリである。プロジェクタ１０１では、この画像メモリ６０６に格納された画像データに基づく画像が投写光学系によってスクリーン上に投写される。 The memory 604 is for storing programs and data necessary for operating the projector 101. The image memory 606 is a frame memory, for example. In the projector 101, an image based on the image data stored in the image memory 606 is projected on the screen by the projection optical system.
　図３は、プロジェクタ１０２の構成を示すブロック図である。図３を参照すると、プロジェクタ１０２の主要部は、外部記憶装置用インタフェース７０１、画像解析部７０２、制御部７０３、メモリ７０４、通信部７０５および画像メモリ７０６からなる。 FIG. 3 is a block diagram showing the configuration of the projector 102. Referring to FIG. 3, the main part of the projector 102 includes an external storage device interface 701, an image analysis unit 702, a control unit 703, a memory 704, a communication unit 705, and an image memory 706.
　外部記憶装置用インタフェース７０１は、外部記憶装置である図１に示したデータ記憶装置１０７と接続される。画像解析部７０２は、外部記憶装置用インタフェース７０１を通じてデータ記憶装置１０７から発表用電子資料を読み出し、その読み出した発表用電子資料の各ページの画像解析を行う。画像解析結果は、画像解析部７０２から制御部７０３に供給される。 The external storage device interface 701 is connected to the data storage device 107 shown in FIG. 1 which is an external storage device. The image analysis unit 702 reads the electronic material for presentation from the data storage device 107 through the external storage device interface 701, and performs image analysis of each page of the read electronic material for presentation. The image analysis result is supplied from the image analysis unit 702 to the control unit 703.
　通信部７０５は、プロジェクタ１０１から画像解析結果を受信する。プロジェクタ１０１から受信した画像解析結果は、通信部７０５から制御部７０３に供給される。 The communication unit 705 receives the image analysis result from the projector 101. The image analysis result received from the projector 101 is supplied from the communication unit 705 to the control unit 703.
　制御部７０３は、プロジェクタ１０２全体の動作を制御する他、通信部７０５を介してプロジェクタ１０１から受信した指定ページの画像解析結果と、画像解析部７０２による各ページの画像解析結果とを比較する。この比較において、指定ページの画像解析結果が各ページの画像解析結果のいずれかと合致した場合は、制御部７０３は、解析結果の合致したページに関する画像データをデータ記憶装置１０７から取得する。制御部７０３は、取得した画像データを画像メモリ７０６に書き込む。 The control unit 703 controls the operation of the entire projector 102 and compares the image analysis result of the designated page received from the projector 101 via the communication unit 705 with the image analysis result of each page by the image analysis unit 702. In this comparison, when the image analysis result of the designated page matches any of the image analysis results of each page, the control unit 703 acquires image data related to the page with the matching analysis result from the data storage device 107. The control unit 703 writes the acquired image data in the image memory 706.
　メモリ７０４は、プロジェクタ１０２を動作させるために必要なプログラムやデータを格納するためのものである。画像メモリ７０６は例えばフレームメモリである。プロジェクタ１０２では、この画像メモリ７０６に格納された画像データに基づく画像が投写光学系によってスクリーン上に投写される。 The memory 704 stores programs and data necessary for operating the projector 102. The image memory 706 is a frame memory, for example. In the projector 102, an image based on the image data stored in the image memory 706 is projected on the screen by the projection optical system.
　次に、本実施形態の電子資料表示システムの動作について具体的に説明する。 Next, the operation of the electronic material display system of this embodiment will be specifically described.
　まず、画像解析部６０２、７０２による画像解析の処理について説明する。この画像解析では、電子資料データ（画像データ）に対して、輪郭検出による画像解析処理が行われる。 First, an image analysis process performed by the image analysis units 602 and 702 will be described. In this image analysis, image analysis processing by contour detection is performed on electronic material data (image data).
　図４に、プロジェクタ１０１によって投写される画像１０４の一例を示す。この画像１０４は、アルファベットの「Ａ」という文字を画面一杯に表示した画像である。画像解析処理では、「Ａ」という画像の輪郭を抽出する。 FIG. 4 shows an example of the image 104 projected by the projector 101. This image 104 is an image in which the letter “A” of the alphabet is displayed on the entire screen. In the image analysis process, the contour of the image “A” is extracted.
　輪郭抽出処理において、例えば、画像解析部６０２は、ＰＣ１０６から供給された画像データＤ１の高周波成分（エッジ成分）を除去して画像データＤ２を生成し、元の画像データＤ１から画像データＤ２を差し引くことで得られる。図５に、図４に示した画像の輪郭を抽出した結果を示す。図５に示す例では、文字「Ａ」のエッジ部分が抽出されている。 In the contour extraction process, for example, the image analysis unit 602 generates image data D2 by removing high-frequency components (edge components) of the image data D1 supplied from the PC 106, and subtracts the image data D2 from the original image data D1. Can be obtained. FIG. 5 shows the result of extracting the contour of the image shown in FIG. In the example shown in FIG. 5, the edge portion of the character “A” is extracted.
　画像解析部６０２は、図５に示した文字「Ａ」の輪郭抽出画像を１６分割する。図６に、文字「Ａ」の輪郭抽出画像を１６分割した例を模式的に示す。図６に示す例では、輪郭抽出画像は、４行４列の１６個のエリアに分割されている。行（縦位置）を示す符号をＡ～Ｄとし、列（横位置）を示す符号を１～４とする。 The image analysis unit 602 divides the contour extraction image of the character “A” shown in FIG. FIG. 6 schematically shows an example in which the contour extraction image of the character “A” is divided into 16 parts. In the example shown in FIG. 6, the contour extraction image is divided into 16 areas of 4 rows and 4 columns. The codes indicating rows (vertical positions) are A to D, and the codes indicating columns (horizontal positions) are 1 to 4.
　さらに、画像解析部６０２は、それぞれのエリアについて、輪郭部分の面積を計算する。図７に、図６に示したエリア構成における縦位置Ａおよび横位置３のエリアの拡大図を示す。画像解析部６０２は、図７に示したエリア内の黒い部分（輪郭部分）の面積を計算する。 Further, the image analysis unit 602 calculates the area of the contour portion for each area. FIG. 7 shows an enlarged view of the area of the vertical position A and the horizontal position 3 in the area configuration shown in FIG. The image analysis unit 602 calculates the area of the black portion (contour portion) in the area shown in FIG.
　全てのエリアについて輪郭部分の面積を計算した後、制御部６０３は、画像解析部６０２による各エリアの輪郭部分の面積の計算結果を含む画像解析結果を、通信部６０５を介してＬＡＮ回線上に送出する。１６分割エリアの場合、画像解析結果は、エリアの位置情報（例えば「Ａ－１」）とそのエリアにおける輪郭部分の面積の計算結果とを含む。 After calculating the area of the contour portion for all the areas, the control unit 603 sends the image analysis result including the calculation result of the area of the contour portion of each area by the image analysis unit 602 to the LAN line via the communication unit 605. Send it out. In the case of a 16-divided area, the image analysis result includes area position information (for example, “A-1”) and the calculation result of the area of the contour portion in the area.
　画像解析部６０２による画像解析およびその画像解析結果のＬＡＮ回線上への送出は、画像信号がＰＣ１０６からプロジェクタ１０１に供給される度（投写される画像１０４の内容が切り替わる度）に実行される。画像解析処理を行った画像が他の画像に切り替わるまでの期間において、画像解析部６０２は、一度または常時、その画像解析結果をＬＡＮ回線上に送出する。 Image analysis by the image analysis unit 602 and transmission of the image analysis result to the LAN line are executed each time an image signal is supplied from the PC 106 to the projector 101 (every time the content of the projected image 104 is switched). In a period until the image subjected to the image analysis process is switched to another image, the image analysis unit 602 sends the image analysis result to the LAN line once or always.
　画像解析部７０２の画像解析処理も、画像解析部６０２の画像解析処理と同じである。ただし、画像解析部７０２は、データ記憶装置１０７に格納されている発表用電子資料の各ページについて画像解析を行う。 The image analysis process of the image analysis unit 702 is the same as the image analysis process of the image analysis unit 602. However, the image analysis unit 702 performs image analysis on each page of the electronic material for presentation stored in the data storage device 107.
　各ページの画像解析において、画像解析部７０２は、輪郭抽出画像を生成し、その輪郭抽出画像を１６個のエリアに分割し、各エリアにおける輪郭部分の面積を計算する。そして、画像解析部７０２は、ページ毎に、エリアの位置情報（例えば「Ａ－１」）とそのエリアにおける輪郭部分の面積の計算結果とを含む画像解析結果を制御部７０３に供給する。 In the image analysis of each page, the image analysis unit 702 generates a contour extraction image, divides the contour extraction image into 16 areas, and calculates the area of the contour portion in each area. Then, the image analysis unit 702 supplies an image analysis result including area position information (for example, “A-1”) and the calculation result of the area of the contour portion in the area to the control unit 703 for each page.
　制御部７０３は、画像解析部７０２から供給された各ページの画像解析結果をメモリ７０４に格納する。図８に、各ページの画像解析結果が格納されるテーブルの一例を示す。図８に示すテーブルは、輪郭抽出画像を１６個のエリアに分割した場合の画像解析結果の一例である。テーブルは、ページを特定するための識別情報であるページ番号（０、１、２、・・・）の項目と、エリアの位置情報（例えば「Ａ－１」）を示す項目とからなり、ページ毎に、各エリアの輪郭部分の面積の計算結果が格納される。ここで、ページ番号は、データ記憶装置１０７に格納されている発表用電子資料の各ページの番号に対応する。 The control unit 703 stores the image analysis result of each page supplied from the image analysis unit 702 in the memory 704. FIG. 8 shows an example of a table storing image analysis results for each page. The table shown in FIG. 8 is an example of an image analysis result when the contour extraction image is divided into 16 areas. The table includes items of page numbers (0, 1, 2,...) That are identification information for specifying pages, and items indicating area position information (for example, “A-1”). Every time, the calculation result of the area of the contour portion of each area is stored. Here, the page number corresponds to the number of each page of the electronic material for presentation stored in the data storage device 107.
　次に、プロジェクタ１０１、１０２における電子資料の表示動作について説明する。 Next, the display operation of the electronic material in the projectors 101 and 102 will be described.
　（１）プロジェクタ１０１の動作：
　図９は、発表者用端末が接続されるプロジェクタ１０１の動作を示すフローチャートである。以下、図１、図２および図９を参照して動作を説明する。 (1) Operation of projector 101:
FIG. 9 is a flowchart showing the operation of the projector 101 to which the presenter terminal is connected. Hereinafter, the operation will be described with reference to FIG. 1, FIG. 2 and FIG.
　画像データがＰＣ１０６からプロジェクタ１０１に供給されると（ステップＳ１０の「ＹＥＳ」）、まず、制御部６０３が、その供給された画像データを画像メモリ６０６に格納する。これにより、ＰＣ１０６からの画像データに基づく画像が投写される（ステップＳ１１）。 When the image data is supplied from the PC 106 to the projector 101 (“YES” in step S10), first, the control unit 603 stores the supplied image data in the image memory 606. Thereby, an image based on the image data from the PC 106 is projected (step S11).
　次に、画像解析部６０２が、ＰＣ１０６から供給された画像データについて輪郭抽出処理を行う（ステップＳ１２）。そして、画像解析部６０２が、その輪郭抽出処理により得られた輪郭抽出画像を複数のエリアに分割し（ステップＳ１３）、各エリアにおける輪郭部分の面積を計算する（ステップＳ１４）。 Next, the image analysis unit 602 performs contour extraction processing on the image data supplied from the PC 106 (step S12). Then, the image analysis unit 602 divides the contour extraction image obtained by the contour extraction processing into a plurality of areas (step S13), and calculates the area of the contour portion in each area (step S14).
　最後に、制御部６０３が、画像解析部６０２にて計算した各エリアにおける輪郭部分の面積の情報を含む画像解析結果を、通信部６０５を通じてＬＡＮ回線上に送出する。 Finally, the control unit 603 sends an image analysis result including information on the area of the contour portion in each area calculated by the image analysis unit 602 to the LAN line through the communication unit 605.
　（２）プロジェクタ１０２の動作：
　プロジェクタ１０２は、ＬＡＮ１０３に接続されており、プロジェクタ１０１との通信が可能なようにネットワーク接続設定がなされている。ネットワーク接続設定は、一般のＬＡＮにおける接続設定である。また、データ記憶装置１０７がプロジェクタ１０２に接続されており、メモリ７０４には、データ記憶装置１０７に格納されている発表用電子資料の各ページに関する画像解析結果を格納したテーブルが作成されている。 (2) Operation of projector 102:
The projector 102 is connected to the LAN 103, and network connection settings are made so that communication with the projector 101 is possible. The network connection setting is a connection setting in a general LAN. A data storage device 107 is connected to the projector 102, and a table is created in the memory 704 that stores image analysis results for each page of the electronic material for presentation stored in the data storage device 107.
　図１０は、プロジェクタ１０２の動作を示すフローチャートである。以下、図１、図３および図１０を参照して動作を説明する。 FIG. 10 is a flowchart showing the operation of the projector 102. Hereinafter, the operation will be described with reference to FIG. 1, FIG. 3, and FIG.
　画像解析結果がプロジェクタ１０１からプロジェクタ１０２に供給されると（ステップＳ２０の「ＹＥＳ」）、まず、制御部７０３が、メモリ７０４に格納されているテーブル内に、プロジェクタ１０１から受信した画像解析結果と合致するページがあるか否かを調べる（ステップＳ２１）。 When the image analysis result is supplied from the projector 101 to the projector 102 (“YES” in step S20), first, the control unit 703 stores the image analysis result received from the projector 101 in the table stored in the memory 704. It is checked whether there is a matching page (step S21).
　プロジェクタ１０１からの画像解析結果と合致するページがある場合は、制御部７０３が、そのページの画像データをデータ記憶装置１０７から読み出す（ステップＳ２２）。そして、制御部７０３が、その読み出した画像データを画像メモリ７０６に格納する。これにより、データ記憶装置１０７から読み出した画像データに基づく画像が投写される（ステップＳ２３）。この投写画像は、プロジェクタ１０１の投写画像と同じ画像である。 If there is a page that matches the image analysis result from the projector 101, the control unit 703 reads the image data of the page from the data storage device 107 (step S22). Then, the control unit 703 stores the read image data in the image memory 706. As a result, an image based on the image data read from the data storage device 107 is projected (step S23). This projection image is the same image as the projection image of the projector 101.
　なお、テーブル内に合致するものがない場合は、制御部７０３は、その旨を示す所定のエラーメッセージを表示するための画像データを画像メモリ７０６に書き込む。これにより、投写画面上に、所定のエラーメッセージが表示される。 If there is no match in the table, the control unit 703 writes image data for displaying a predetermined error message indicating that in the image memory 706. As a result, a predetermined error message is displayed on the projection screen.
　以上の本実施形態の電子資料表示システムによれば、表示内容が異なる複数のページからなる電子資料が格納されたＰＣ１０６がプロジェクタ１０１に接続され、上記電子資料が格納されたデータ記憶装置１０７がプロジェクタ１０２に接続される。プロジェクタ１０１において、制御部６０３が、ＰＣ１０６から供給される上記電子資料のいずれかのページの画像を表示させ、画像解析部６０２が、その表示したページの画像を解析して該表示ページを識別するための画像解析情報を取得する。そして、制御部６０３が、画像解析部６０２にて取得した画像解析情報をＬＡＮ１０３上に送出する。一方、プロジェクタ１０２において、画像解析部７０２が、データ記憶装置１０７に格納された上記電子資料の各ページの画像を解析してそれぞれのページを識別するための画像解析情報を取得し、制御部７０３が、その取得した画像解析情報をそれぞれのページを特定可能な情報と対応付けてテーブルに格納する。そして、制御部７０３が、プロジェクタ１０１からの画像解析情報に基づいて上記テーブルを検索して上記表示ページに対応するページを特定し、該特定したページのデータをデータ記憶装置１０７から取得し、該取得したデータに基づく画像を表示させる。このような構成により、プロジェクタ１０１にて表示される画像１０４と同じ内容の画像１０５が、自動的に、プロジェクタ１０２にて表示される。よって、例えば、同一資料をもとにテレビ会議や電話会議等を行う場合において、資料のページ送りの間違いを抑制することができ、その結果、円滑な会議が可能となる。 According to the electronic material display system of the present embodiment as described above, the PC 106 storing electronic materials consisting of a plurality of pages with different display contents is connected to the projector 101, and the data storage device 107 storing the electronic materials is used as the projector. 102. In the projector 101, the control unit 603 displays an image of any page of the electronic material supplied from the PC 106, and the image analysis unit 602 analyzes the displayed page image to identify the display page. Image analysis information is acquired. Then, the control unit 603 sends the image analysis information acquired by the image analysis unit 602 onto the LAN 103. On the other hand, in the projector 102, the image analysis unit 702 obtains image analysis information for identifying each page by analyzing the image of each page of the electronic material stored in the data storage device 107, and the control unit 703. However, the acquired image analysis information is stored in a table in association with information capable of specifying each page. Then, the control unit 703 searches the table based on the image analysis information from the projector 101 to identify the page corresponding to the display page, acquires the data of the identified page from the data storage device 107, and Display an image based on the acquired data. With such a configuration, the image 105 having the same content as the image 104 displayed on the projector 101 is automatically displayed on the projector 102. Therefore, for example, when a video conference, a telephone conference, or the like is performed based on the same material, it is possible to suppress a page feed error of the material, and as a result, a smooth conference is possible.
　加えて、プロジェクタ１０１には、ＰＣ１０６から電子資料が供給され、プロジェクタ１０２には、データ記憶装置１０７から電子資料が供給されるようになっており、ＰＣと各プロジェクタとの間でネットワークを通じて電子資料を送受信する必要はない。プロジェクタ間で送受信されるデータは画像解析情報であり、この画像解析情報のデータ量は、電子資料のページの画像データに比較して少ない。したがって、ネットワークのトラフィック増大や電子資料の表示遅延の問題は生じない。 In addition, electronic materials are supplied from the PC 106 to the projector 101, and electronic materials are supplied from the data storage device 107 to the projector 102. Electronic materials are connected between the PC and each projector through a network. There is no need to send or receive. The data transmitted / received between the projectors is image analysis information, and the amount of data of the image analysis information is smaller than the image data of the page of the electronic material. Therefore, there is no problem of increase in network traffic or display delay of electronic materials.
　（他の実施形態）
　図１に示した電子資料表示システムでは、各プロジェクタにおける画像解析処理として輪郭検出による画像解析処理を用いているが、本発明はこれに限定されるものではない。ページを特定することができるのであれば、どのような画像解析処理を用いてもよい。適用可能な画像解析処理としては、例えば、画像データの輝度情報や色情報を用いた画像解析処理がある。 (Other embodiments)
In the electronic material display system shown in FIG. 1, image analysis processing by contour detection is used as image analysis processing in each projector, but the present invention is not limited to this. Any image analysis process may be used as long as the page can be specified. Applicable image analysis processing includes, for example, image analysis processing using luminance information and color information of image data.
　輝度情報を用いた画像解析処理について説明する。輝度情報を用いた画像解析処理では、ページの画像の各画素の輝度レベルを平均した平均輝度レベル（ＡＰＬ）を計算し、該計算結果を該ページの画像解析情報として用いる。このＡＰＬ計算において、画像全体のＡＰＬを求めてよく、また、画像を複数のエリアに分割し、各エリアのＡＰＬを計算してもよい。 Image analysis processing using luminance information will be described. In the image analysis processing using luminance information, an average luminance level (APL) obtained by averaging the luminance levels of the pixels of the page image is calculated, and the calculation result is used as image analysis information for the page. In this APL calculation, the APL of the entire image may be obtained, or the image may be divided into a plurality of areas and the APL of each area may be calculated.
　プロジェクタ１０１では、画像解析部６０２が、ＰＣ１０６から供給された画像データに基づく画像に対して輝度情報を用いた画像解析処理を行う。そして、制御部６０３が、その画像解析結果を、通信部６０５を通じてＬＡＮ上に送出する。一方、プロジェクタ１０２では、画像解析部７０２が、データ記憶装置１０７に格納されている発表用電子資料の各ページに関する画像データに基づく画像に対して、輝度情報を用いた画像解析処理を行う。そして、制御部７０３が、その画像解析結果を、メモリ７０４内のテーブルに格納する。プロジェクタ１０１、１０２における表示動作は図９、図１０に示した手順と同じである。 In the projector 101, the image analysis unit 602 performs image analysis processing using luminance information on an image based on the image data supplied from the PC 106. Then, the control unit 603 sends the image analysis result to the LAN through the communication unit 605. On the other hand, in the projector 102, the image analysis unit 702 performs image analysis processing using luminance information on an image based on image data regarding each page of the electronic material for presentation stored in the data storage device 107. Then, the control unit 703 stores the image analysis result in a table in the memory 704. The display operation in the projectors 101 and 102 is the same as the procedure shown in FIGS.
　色情報を用いた画像解析処理について説明する。色情報としては、画像の色数に関する第１の色情報と、色差信号に基づく第２の色情報とがある。 An image analysis process using color information will be described. The color information includes first color information related to the number of colors of the image and second color information based on the color difference signal.
　第１の色情報による画像解析処理では、ページの画像の各画素にて示される色数をカウントし、該カウント結果を該ページの画像解析情報として用いる。この色数のカウントにおいて、画像全体の色数をカウントしてもよく、また、画像を複数のエリアに分割し、各エリアの色数をカウントしてもよい。 In the image analysis processing using the first color information, the number of colors indicated by each pixel of the page image is counted, and the count result is used as image analysis information for the page. In counting the number of colors, the number of colors in the entire image may be counted, or the image may be divided into a plurality of areas and the number of colors in each area may be counted.
　プロジェクタ１０１では、画像解析部６０２が、ＰＣ１０６から供給された画像データに基づく画像に対して第１の色情報による画像解析処理を行う。そして、制御部６０３が、その画像解析結果を、通信部６０５を通じてＬＡＮ上に送出する。一方、プロジェクタ１０２では、画像解析部７０２が、データ記憶装置１０７に格納されている発表用電子資料の各ページに関する画像データに基づく画像に対して、第１の色情報による画像解析処理を行う。そして、制御部７０３が、その画像解析結果を、メモリ７０４内のテーブルに格納する。プロジェクタ１０１、１０２における表示動作は図９、図１０に示した手順と同じである。 In the projector 101, the image analysis unit 602 performs image analysis processing based on the first color information on an image based on the image data supplied from the PC 106. Then, the control unit 603 sends the image analysis result to the LAN through the communication unit 605. On the other hand, in the projector 102, the image analysis unit 702 performs image analysis processing based on the first color information on the image based on the image data regarding each page of the electronic material for presentation stored in the data storage device 107. Then, the control unit 703 stores the image analysis result in a table in the memory 704. The display operation in the projectors 101 and 102 is the same as the procedure shown in FIGS.
　８ビット処理の場合は、赤、青、緑をそれぞれ２５６段階のレベルで現す。この場合、画素にて表示可能な色数は、［２５６×２５６×２５６］種類となる。第１の色情報による画像解析処理では、各画素にて示される色が何種類あるかが計算される。 In the case of 8-bit processing, each of red, blue, and green is expressed in 256 levels. In this case, the number of colors that can be displayed by the pixels is [256 × 256 × 256] types. In the image analysis process using the first color information, the number of colors indicated by each pixel is calculated.
　第２の色情報による画像解析処理では、ページの画像の各画素にて示される色を表す２つの色差信号（Ｒ－Ｙ信号およびＢ－Ｙ信号）の平均を計算し、該計算結果を該ページの画像解析情報として用いる。色差信号の平均値の計算において、画像全体の色差信号の平均値を計算してもよく、また、画像を複数のエリアに分割し、各エリアについて、色差信号の平均値を計算してもよい。 In the image analysis processing by the second color information, an average of two color difference signals (RY signal and BY signal) representing the color indicated by each pixel of the image of the page is calculated, and the calculation result is calculated as the calculation result. Used as page image analysis information. In calculating the average value of the color difference signals, the average value of the color difference signals of the entire image may be calculated, or the image may be divided into a plurality of areas, and the average value of the color difference signals may be calculated for each area. .
　プロジェクタ１０１では、画像解析部６０２が、ＰＣ１０６から供給された画像データに基づく画像に対して第２の色情報による画像解析処理を行う。そして、制御部６０３が、その画像解析結果を、通信部６０５を通じてＬＡＮ上に送出する。一方、プロジェクタ１０２では、画像解析部７０２が、データ記憶装置１０７に格納されている発表用電子資料の各ページに関する画像データに基づく画像に対して、第２の色情報による画像解析処理を行う。そして、制御部７０３が、その画像解析結果を、メモリ７０４内のテーブルに格納する。プロジェクタ１０１、１０２における表示動作は図９、図１０に示した手順と同じである。 In the projector 101, the image analysis unit 602 performs image analysis processing based on the second color information on the image based on the image data supplied from the PC 106. Then, the control unit 603 sends the image analysis result to the LAN through the communication unit 605. On the other hand, in the projector 102, the image analysis unit 702 performs image analysis processing based on the second color information on the image based on the image data regarding each page of the electronic material for presentation stored in the data storage device 107. Then, the control unit 703 stores the image analysis result in a table in the memory 704. The display operation in the projectors 101 and 102 is the same as the procedure shown in FIGS.
　以上説明した実施形態の構成および動作は本発明の一例であり、本発明は、これに限定されるものではない。本発明の構成および動作については、発明の趣旨を逸脱しない範囲において、当業者が理解し得る様々な変更を行うことができる。 The configuration and operation of the embodiment described above are examples of the present invention, and the present invention is not limited to this. Various changes that can be understood by those skilled in the art can be made to the configuration and operation of the present invention without departing from the spirit of the invention.
　例えば、図１に示したシステムでは、２台のプロジェクタが使用されているが、本発明はこれに限定されるものではない。３台以上のプロジェクタがＬＡＮを介して接続されてもよい。３台以上のプロジェクタによりシステムを構成する場合は、１台のプロジェクタが図２に示した構成とされ、他のプロジェクタが図３に示した構成とされる。 For example, in the system shown in FIG. 1, two projectors are used, but the present invention is not limited to this. Three or more projectors may be connected via a LAN. When the system is configured by three or more projectors, one projector has the configuration shown in FIG. 2, and the other projectors have the configuration shown in FIG.
　また、複数のプロジェクタによりシステムを構成する場合において、各プロジェクタが、図２および図３に示した各機能を有していてもよい。 Further, when the system is configured by a plurality of projectors, each projector may have the functions shown in FIGS.
　また、画像解析処理において、輪郭情報、輝度情報および色情報の少なくとも２つの情報を用いてもよい。 In the image analysis process, at least two pieces of information such as contour information, luminance information, and color information may be used.
　以下に、プロジェクタ１０１、１０２にて、輪郭情報および輝度情報を用いた画像解析処理を行う形態について説明する。 Hereinafter, a mode in which the projectors 101 and 102 perform image analysis processing using contour information and luminance information will be described.
　図１１に、輪郭情報および輝度情報を用いた画像解析処理を行うプロジェクタ１０１の構成を示す。図１１に示すプロジェクタ１０１は、画像解析部６０２に代えて画像解析部６０２ａ、６０２ｂを設けた以外は、図２に示した構成と同じものである。 FIG. 11 shows the configuration of the projector 101 that performs image analysis processing using contour information and luminance information. The projector 101 shown in FIG. 11 has the same configuration as that shown in FIG. 2 except that image analysis units 602 a and 602 b are provided instead of the image analysis unit 602.
　ＰＣ１０６からの画像データが、画像解析部６０２ａ、６０２ｂのそれぞれに供給されている。 Image data from the PC 106 is supplied to each of the image analysis units 602a and 602b.
　画像解析部６０２ａは、図２に示した画像解析部６０２と同じものであって、ＰＣ１０６から供給された画像データについて輪郭抽出処理を行い、それにより得られた輪郭抽出画像を複数のエリアに分割し、各エリアにおける輪郭部分の面積を計算する。画像解析部６０２ｂは、ＰＣ１０６から供給された画像データについて、上述した輝度情報による画像解析処理を行う。画像解析部６０２ａ、６０２ｂによる各画像解析結果は制御部６０３に供給される。 The image analysis unit 602a is the same as the image analysis unit 602 shown in FIG. 2, and performs contour extraction processing on the image data supplied from the PC 106, and divides the obtained contour extraction image into a plurality of areas. Then, the area of the contour portion in each area is calculated. The image analysis unit 602b performs image analysis processing based on the luminance information described above on the image data supplied from the PC 106. Each image analysis result by the image analysis units 602a and 602b is supplied to the control unit 603.
　制御部６０３は、画像解析部６０２ａ、６０２ｂの各画像解析結果を、通信部６０５を介してＬＡＮ回線上に送出する。 The control unit 603 sends the image analysis results of the image analysis units 602a and 602b to the LAN line via the communication unit 605.
　図１２に、輪郭情報および輝度情報を用いた画像解析処理を行うプロジェクタ１０２の構成を示す。図１２に示すプロジェクタ１０２は、画像解析部７０２に代えて画像解析部７０２ａ、７０２ｂを設けた以外は、図３に示した構成と同じものである。 FIG. 12 shows the configuration of the projector 102 that performs image analysis processing using contour information and luminance information. The projector 102 shown in FIG. 12 has the same configuration as that shown in FIG. 3 except that image analysis units 702a and 702b are provided instead of the image analysis unit 702.
　画像解析部７０２ａ、７０２ｂは、外部記憶装置用インタフェース７０１を介してデータ記憶装置１０７と接続される。画像解析部７０２ａは、図３に示した画像解析部７０２と同じものであって、データ記憶装置１０７から発表用電子資料を読み出し、その読み出した発表用電子資料の各ページの画像解析を行う。この画像解析結果は、画像解析部７０２から制御部７０３に供給される。 The image analysis units 702a and 702b are connected to the data storage device 107 via the external storage device interface 701. The image analysis unit 702a is the same as the image analysis unit 702 shown in FIG. 3, reads out the electronic material for presentation from the data storage device 107, and performs image analysis of each page of the read electronic material for presentation. The image analysis result is supplied from the image analysis unit 702 to the control unit 703.
　画像解析部７０２ｂは、データ記憶装置１０７から発表用電子資料を読み出し、その読み出した発表用電子資料の各ページの画像データにより示される画像について、上述した輝度情報による画像解析処理を行う。この画像解析結果は、画像解析部７０２から制御部７０３に供給される。 The image analysis unit 702b reads the electronic material for presentation from the data storage device 107, and performs the image analysis process based on the luminance information described above on the image indicated by the image data of each page of the read electronic material for presentation. The image analysis result is supplied from the image analysis unit 702 to the control unit 703.
　制御部７０３は、画像解析部７０２ａ、７０２ｂからの各ページに関する画像解析結果をメモリ７０４内のテーブルに格納する。プロジェクタ１０１、１０２における表示動作は図９、図１０に示した手順と同じである。 The control unit 703 stores the image analysis result regarding each page from the image analysis units 702a and 702b in a table in the memory 704. The display operation in the projectors 101 and 102 is the same as the procedure shown in FIGS.
　上述の各実施形態における電子資料提示システムは、ネットワークを介して接続された複数のプロジェクタにより構成されているが、本発明は、これに限定されるものではない。プロジェクタに代えて、液晶ディスプレイやプラズマディスプレイなどの画像表示装置を用いてもよい。この場合も、発表者端末が接続される画像表示装置は図２に示した構成を有し、外部記憶装置（データ記憶装置）が接続される画像表示装置は図３に示した構成を有する。 The electronic material presentation system in each of the above-described embodiments includes a plurality of projectors connected via a network, but the present invention is not limited to this. Instead of the projector, an image display device such as a liquid crystal display or a plasma display may be used. Also in this case, the image display device to which the presenter terminal is connected has the configuration shown in FIG. 2, and the image display device to which the external storage device (data storage device) is connected has the configuration shown in FIG.

Claims (20)

  1. 　表示内容が異なる複数のページからなる電子資料が格納された外部端末が接続され、該外部端末から供給される前記電子資料のいずれかのページの画像を表示する第１の表示装置と、
    　外部記憶装置が接続され、該外部記憶装置に格納された前記電子資料の各ページの画像を解析してそれぞれのページを識別するための画像解析情報を取得し、該取得した画像解析情報をそれぞれのページを特定可能な情報と対応付けてテーブルに格納する、少なくとも一つの第２の表示装置と、を有し、
    　前記第１の表示装置は、前記第２の表示装置がネットワークを介して接続され、表示したページの画像を解析して該表示ページを識別するための画像解析情報を取得し、該取得した画像解析情報を前記ネットワーク上に送出し、
    　前記第２の表示装置は、前記第１の表示装置が送出した前記表示ページの画像解析情報に基づいて前記テーブルを検索して前記表示ページに対応するページを特定し、該特定したページのデータを前記外部記憶装置から取得し、該取得したデータに基づく画像を表示する、電子資料提示システム。     A first display device connected to an external terminal storing electronic materials composed of a plurality of pages having different display contents, and displaying an image of any page of the electronic material supplied from the external terminal;
    An external storage device is connected, the image of each page of the electronic material stored in the external storage device is analyzed to acquire image analysis information for identifying each page, and the acquired image analysis information is And at least one second display device that stores the page in association with identifiable information in a table,
    The first display device is connected to the second display device via a network, analyzes an image of the displayed page, acquires image analysis information for identifying the display page, and acquires the acquired image. Send analysis information to the network,
    The second display device searches the table based on the image analysis information of the display page sent out by the first display device, specifies a page corresponding to the display page, and data of the specified page Is obtained from the external storage device and an image based on the obtained data is displayed.
  2. 　前記第１および第２の表示装置は、ページの画像の輪郭を抽出し、該抽出した輪郭部分の面積を計算し、該計算結果を該ページの画像解析情報として用いる、請求の範囲１に記載の電子資料提示システム。 The said 1st and 2nd display apparatus extracts the outline of the image of a page, calculates the area of this extracted outline part, and uses this calculation result as image analysis information of this page. Electronic material presentation system.
  3. 　前記第１および第２の表示装置は、ページの画像の輪郭を抽出し、該抽出した輪郭よりなる画像を複数のエリアに分割し、それぞれのエリアにおける輪郭部分の面積を計算し、該エリア毎の計算結果を該ページの画像解析情報として用いる、請求の範囲１に記載の電子資料提示システム。 The first and second display devices extract the contour of the image of the page, divide the image composed of the extracted contour into a plurality of areas, calculate the area of the contour portion in each area, and The electronic material presentation system according to claim 1, wherein the calculation result is used as image analysis information of the page.
  4. 　前記第１および第２の表示装置は、ページの画像の各画素の輝度レベルを平均した平均輝度レベルを計算し、該計算結果を該ページの画像解析情報として用いる、請求の範囲１乃至３のいずれか１項に記載の電子資料提示システム。 The first and second display devices calculate an average luminance level obtained by averaging luminance levels of respective pixels of an image of a page, and use the calculation result as image analysis information of the page. The electronic material presentation system according to any one of the above items.
  5. 　前記第１および第２の表示装置は、ページの画像を複数のエリアに分割し、それぞれのエリアの各画素の輝度レベルを平均した平均輝度レベルを計算し、該エリア毎の計算結果を該ページの画像解析情報として用いる、請求の範囲１乃至３のいずれか１項に記載の電子資料提示システム。 The first and second display devices divide an image of a page into a plurality of areas, calculate an average luminance level obtained by averaging the luminance levels of the pixels in each area, and calculate the calculation result for each area. The electronic material presentation system according to claim 1, wherein the electronic material presentation system is used as image analysis information.
  6. 　前記第１および第２の表示装置は、ページの画像の各画素にて示される色数をカウントし、該カウント結果を該ページの画像解析情報として用いる、請求の範囲１乃至５のいずれか１項に記載の電子資料提示システム。 The first or second display device according to any one of claims 1 to 5, wherein the first and second display devices count the number of colors indicated by each pixel of an image of a page and use the count result as image analysis information of the page. Electronic material presentation system described in the section.
  7. 　前記第１および第２の表示装置は、ページの画像を複数のエリアに分割し、それぞれのエリアの各画素にて示される色数をそれぞれカウントし、該エリア毎のカウント結果を該ページの画像解析情報として用いる、請求の範囲１乃至５のいずれか１項に記載の電子資料提示システム。 The first and second display devices divide a page image into a plurality of areas, count the number of colors indicated by each pixel of each area, and display the count result for each area as an image of the page. The electronic material presentation system according to any one of claims 1 to 5, which is used as analysis information.
  8. 　前記第１および第２の表示装置は、ページの画像の各画素にて示される色を表す２つの色差信号の平均を計算し、該計算結果を該ページの画像解析情報として用いる、請求の範囲１乃至８のいずれか１項に記載の電子資料提示システム。 The first and second display devices calculate an average of two color difference signals representing colors indicated by each pixel of an image of a page, and use the calculation result as image analysis information of the page. The electronic material presentation system according to any one of 1 to 8.
  9. 　前記第１および第２の表示装置は、ページの画像を複数のエリアに分割し、それぞれのエリアの各画素にて示される色を表す２つの色差信号の平均をそれぞれ計算し、該エリア毎の計算結果を該ページの画像解析情報として用いる、請求の範囲１乃至３のいずれか１項に記載の電子資料提示システム。 The first and second display devices divide an image of a page into a plurality of areas, calculate an average of two color difference signals representing colors indicated by each pixel in each area, and The electronic material presentation system according to any one of claims 1 to 3, wherein the calculation result is used as image analysis information of the page.
  10. 　表示内容が異なる複数のページからなる電子資料が格納された外部端末が接続され、該外部端末から供給される前記電子資料のいずれかのページの画像を表示する画像表示装置であって、
    　他の画像表示装置がネットワークを介して接続される通信部と、
    　表示したページの画像を解析して該表示ページを識別するための画像解析情報を取得する画像解析部と、
    　前記画像解析部にて得した画像解析情報を、前記通信部を通じて前記ネットワーク上に送出する制御部と、を有する画像表示装置。     An image display device is connected to an external terminal storing electronic materials consisting of a plurality of pages with different display contents, and displays an image of any page of the electronic material supplied from the external terminal,
    A communication unit to which another image display device is connected via a network;
    An image analysis unit that analyzes an image of the displayed page and acquires image analysis information for identifying the display page;
    An image display apparatus comprising: a control unit that sends image analysis information obtained by the image analysis unit to the network through the communication unit.
  11. 　表示内容が異なる複数のページからなる電子資料が格納された外部記憶装置が接続される画像表示装置であって、
    　前記外部記憶装置に格納された前記電子資料の各ページの画像を解析してそれぞれのページを識別するための画像解析情報を取得する画像解析部と、
    　前記画像解析部にて取得した画像解析情報をそれぞれのページを特定可能な情報と対応付けてテーブルに格納する制御部と、
    　前記電子資料のいずれかのページの画像を表示する他の画像表示装置がネットワークを介して接続される通信部と、を有し、
    　前記通信部は、前記電子資料のいずれかのページの表示画像に関する画像解析情報を前記他の画像表示装置から受信し、
    　前記制御部は、前記通信部にて受信した画像解析情報に基づいて前記テーブルを検索して前記表示画像に対応するページを特定し、該特定したページのデータを前記外部記憶装置から取得し、該取得したデータに基づく画像を表示させる、画像表示装置。     An image display device to which an external storage device storing electronic materials consisting of a plurality of pages with different display contents is connected,
    An image analysis unit for analyzing the image of each page of the electronic material stored in the external storage device and acquiring image analysis information for identifying each page;
    A control unit that stores the image analysis information acquired by the image analysis unit in a table in association with information that can identify each page;
    Another image display device that displays an image of any page of the electronic material is connected via a network, and
    The communication unit receives image analysis information related to a display image of any page of the electronic material from the other image display device,
    The control unit searches the table based on the image analysis information received by the communication unit, specifies a page corresponding to the display image, acquires data of the specified page from the external storage device, An image display device for displaying an image based on the acquired data.
  12. 　前記画像解析部は、ページの画像の輪郭を抽出し、該抽出した輪郭部分の面積を計算し、該計算結果を該ページの画像解析情報として用いる、請求の範囲１０または１１に記載の画像表示装置。 12. The image display according to claim 10, wherein the image analysis unit extracts a contour of an image of a page, calculates an area of the extracted contour portion, and uses the calculation result as image analysis information of the page. apparatus.
  13. 　前記画像解析部は、ページの画像の輪郭を抽出し、該抽出した輪郭よりなる画像を複数のエリアに分割し、それぞれのエリアにおける輪郭部分の面積を計算し、該エリア毎の計算結果を該ページの画像解析情報として用いる、請求の範囲１０または１１に記載の画像表示装置。 The image analysis unit extracts the contour of the image of the page, divides the image including the extracted contour into a plurality of areas, calculates the area of the contour portion in each area, and calculates the calculation result for each area. The image display device according to claim 10 or 11, which is used as image analysis information of a page.
  14. 　前記画像解析部は、ページの画像の各画素の輝度レベルを平均した平均輝度レベルを計算し、該計算結果を該ページの画像解析情報として用いる、請求の範囲１０乃至１３のいずれか１項に記載の画像表示装置。 The said image analysis part calculates the average luminance level which averaged the luminance level of each pixel of the image of a page, and uses this calculation result as image analysis information of this page. The image display device described.
  15. 　前記画像解析部は、ページの画像を複数のエリアに分割し、それぞれのエリアの各画素の輝度レベルを平均した平均輝度レベルを計算し、該エリア毎の計算結果を該ページの画像解析情報として用いる、請求の範囲１０乃至１３のいずれか１項に記載の画像表示装置。 The image analysis unit divides the image of the page into a plurality of areas, calculates an average luminance level obtained by averaging the luminance levels of the pixels in each area, and uses the calculation result for each area as image analysis information for the page. The image display device according to any one of claims 10 to 13, which is used.
  16. 　前記画像解析部は、ページの画像の各画素にて示される色数をカウントし、該カウント結果を該ページの画像解析情報として用いる、請求の範囲１０乃至１５のいずれか１項に記載の画像表示装置。 The image according to any one of claims 10 to 15, wherein the image analysis unit counts the number of colors indicated by each pixel of an image of a page and uses the count result as image analysis information of the page. Display device.
  17. 　前記画像解析部は、ページの画像を複数のエリアに分割し、それぞれのエリアの各画素にて示される色数をそれぞれカウントし、該エリア毎のカウント結果を該ページの画像解析情報として用いる、請求の範囲１０乃至１５のいずれか１項に記載の画像表示装置。 The image analysis unit divides a page image into a plurality of areas, counts the number of colors indicated by each pixel of each area, and uses the count result for each area as image analysis information for the page. The image display device according to any one of claims 10 to 15.
  18. 　前記画像解析部は、ページの画像の各画素にて示される色を表す２つの色差信号の平均を計算し、該計算結果を該ページの画像解析情報として用いる、請求の範囲１０乃至１７のいずれか１項に記載の画像表示装置。 The image analysis unit according to any one of claims 10 to 17, wherein the image analysis unit calculates an average of two color difference signals representing colors indicated by each pixel of an image of a page and uses the calculation result as image analysis information of the page. The image display device according to claim 1.
  19. 　前記画像解析部は、ページの画像を複数のエリアに分割し、それぞれのエリアの各画素にて示される色を表す２つの色差信号の平均をそれぞれ計算し、該エリア毎の計算結果を該ページの画像解析情報として用いる、請求の範囲１乃至３のいずれか１項に記載の電子資料提示システム。 The image analysis unit divides an image of a page into a plurality of areas, calculates an average of two color difference signals representing colors indicated by pixels in each area, and calculates a calculation result for each area. The electronic material presentation system according to claim 1, wherein the electronic material presentation system is used as image analysis information.
  20. 　表示内容が異なる複数のページからなる電子資料が格納された外部端末が接続される第１の画像表示装置と、前記電子資料が格納された外部記憶装置が接続される少なくとも一つの第２の画像表示装置とがネットワークを介して接続されるシステムにおいて行われる電子資料提示方法であって、
    　前記第２の画像表示装置が、前記外部記憶装置に格納された前記電子資料の各ページの画像を解析してそれぞれのページを識別するための画像解析情報を取得し、該取得した画像解析情報をそれぞれのページを特定可能な情報と対応付けてテーブルに格納し、
    　前記第１の画像表示装置が、前記外部端末から供給される前記電子資料のいずれかのページの画像を表示し、該表示ページの画像を解析して該表示ページを識別するための画像解析情報を取得し、該取得した画像解析情報を前記ネットワーク上に送出し、
    　前記第２の画像表示装置が、前記第１の画像表示装置が送出した前記表示ページの画像解析情報に基づいて前記テーブルを検索して前記表示ページに対応するページを特定し、該特定したページのデータを前記外部記憶装置から取得し、該取得したデータに基づく画像を表示する、電子資料提示方法。     A first image display device to which an external terminal storing electronic materials consisting of a plurality of pages having different display contents is connected, and at least one second image to which an external storage device storing the electronic materials is connected. An electronic material presentation method performed in a system in which a display device is connected via a network,
    The second image display device analyzes the image of each page of the electronic material stored in the external storage device to acquire image analysis information for identifying each page, and the acquired image analysis information Is stored in the table in association with information that can identify each page,
    Image analysis information for the first image display device to display an image of any page of the electronic material supplied from the external terminal and analyze the image of the display page to identify the display page And sending the acquired image analysis information to the network,
    The second image display device searches the table based on the image analysis information of the display page sent out by the first image display device, specifies a page corresponding to the display page, and specifies the specified page The electronic material presentation method of acquiring the data from the external storage device and displaying an image based on the acquired data.
PCT/JP2008/050613 2008-01-18 2008-01-18 Electronic data display system, image display, and electronic data display method WO2009090752A1 (en)

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