JP2005204043A - Image display apparatus, information acquisition device thereof, information acquisition/setting method thereof, and content in which setting information thereof is embedded - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide setting information of an image display apparatus, such as that of a projector on a displaying image to the user, without displaying through superimposition. <P>SOLUTION: The projector 1 as the image display apparatus includes a watermark-embedding processor 13 which embeds the setting information as a watermark in an image displayed by the projector 1, and an image display processor 14 which displays the embedded image of the electronic watermark. A remote controller, as an information acquisition device which makes information acquisition of the projector 1 possible, reads the watermark from an photographed image of a display image displayed by the projector 1, obtains the setting information of the projector 1, and displays the acquired setting information on own display screen. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention acquires information related to an image display device such as setting information and device information of the image display device, and sets the image display device in an optimal setting state based on the acquired information. The present invention relates to information acquisition / setting methods for information acquisition devices and image display devices, and contents in which setting information for image display devices is embedded.

  In general, a television receiver, a personal computer (PC), and an image display device such as a projector can perform various adjustments such as brightness and color adjustment, and shape adjustment. In addition, there are devices that can read out various information (for example, temperature information from a temperature sensor and information on the usage time of the image display device) inside the image display device.

  Note that information for performing various adjustments such as brightness adjustment, color adjustment, and shape adjustment described above is referred to herein as setting information, and various information within the image display device described above (for example, temperature information from a temperature sensor, The information on the usage time of the image display device, etc.) will be referred to herein as device information, and these will be collectively referred to as information relating to the image display device.

  In some cases, the user wants to confirm information regarding such an image display device. In such a case, the user can generally read the information by performing a predetermined operation. However, as a means of presenting such information to the user, usually when the user wants to change the setting by superimposing and displaying information for setting on the whole or a part of the screen of the image display device. In most cases, for example, an adjustment operation such as brightness is performed while viewing the display. However, this causes a problem that, for example, viewing of an image that is originally desired to be displayed is hindered during the setting operation.

Some image display devices have a function that enables fine adjustment according to the type of content to be displayed. Thus, for example, when a certain movie is viewed on an image display device (for example, a projector) of a certain model, how the movie provider adjusts the setting of the projector to the user side. If it is specified whether it is optimal and settings corresponding to the specification can be made, it is possible to view an image closer to the intention of the movie creator.
However, at present, a technology for automatically providing such setting information to the image display device side or automatically acquiring it by the image display device has not been established.

For example, there is a technique described in Patent Document 1 if a technique for automatically acquiring the setting information as described above is cited.
In the technique of Patent Document 1, when an image output by a digital still camera or the like is printed or displayed by an image output device such as a printer or a projector, the color reproduction characteristics of individual cameras and the photographer's shooting are performed on the image output device side. An image processing that reflects the intention (a special setting when shooting a night view or the like) is performed to output an optimum image.

In order to realize this, the technique of Patent Document 1 uses information (image processing information) that enables image processing control that reflects the color reproducibility of the camera and the photographing intention of the photographer in the captured image data. It is embedded as watermark data. On the image output device side, image processing information embedded as a digital watermark is extracted from the image data, subjected to image processing based on the extracted image processing information, and then printed or displayed.
As described above, Patent Document 1 mainly aims to transmit image processing control reflecting the color reproducibility on the camera side and the photographing intention of the photographer to the image output device side such as a printer.
JP 2002-314797 A

  The technique of Patent Document 1 described above embeds image processing control reflecting the color reproducibility on the camera side and the photographing intention of the photographer as image data in the image data. It is used in a different way from that used for protection and other purposes, and is considered to be original in itself.

  However, as described above, this patent document 1 is mainly intended to transmit image processing control reflecting the color reproducibility on the camera side and the photographing intention of the photographer to the image output device side such as a printer. Yes, the setting information and device information of the image output apparatus itself are not embedded as digital watermark data. That is, according to the present invention, as described above, when information or the like for setting the image display device is displayed superimposed on the whole or a part of the screen of the image display device, viewing of the image that is originally desired to be displayed is hindered. Since the main problem is to solve this problem, the technique of Patent Document 1 cannot solve the problem.

  Therefore, the present invention superimposes information related to the image display device on the display image by embedding information related to the image display device such as setting information and device information of the image display device as digital watermark data in the image to be displayed. Image display device, information acquisition device for image display device, information acquisition / setting method for image display device, and information acquisition / setting method for image display device, An object of the present invention is to provide content in which setting information of an image display device is embedded.

  (1) The image display device of the present invention has a function of acquiring information related to the image display device such as setting information and device information of the image display device and presenting the acquired information related to the image display device to the user. A display device, characterized in that it has electronic watermark embedding means for embedding information relating to the image display device as an electronic watermark in an image displayed by the image display device.

As described above, since the information about the image display device can be embedded as a digital watermark, it is not necessary to display the information about the image display device on the display image in a state visible to the user, and the original display image is being displayed. In this case, the display image is not hindered. Note that the user can confirm information about the device on the remote control device by using a device (such as a remote control device) that can read the digital watermark.
The above setting information is information for setting the brightness, color, shape, etc. of the display image, and if the information about the image display device is device information of the image display device, for example, temperature This includes the temperature information from the sensor and the usage time of the device.

(2) The image display device according to (1) preferably includes a digital watermark embedding selection unit that can select whether to embed a digital watermark in the image to be displayed.
As a result, a digital watermark can be embedded as necessary, and a digital watermark can be prevented from being embedded in a display content that does not want to be embedded.

  (3) An information acquisition device for an image display device according to the present invention is an information acquisition device for an image display device capable of acquiring information related to the image display device, and is capable of capturing a display image displayed by the image display device. And when the information related to the image display device is embedded as a digital watermark in the captured image captured by the imaging means, the digital watermark reading is performed to read the digital watermark and acquire the information related to the image display device It is characterized by comprising processing means and display means capable of displaying information relating to the image display device acquired by the digital watermark reading processing means.

  As a result, the display image displayed by the image display device (display image embedded with the digital watermark) is imaged by the information acquisition device of the image display device, and the digital watermark is read out from the captured image. Information can be acquired.

  By using such an information acquisition device of the image display device to capture a display image of another image display device, it is possible to read out a digital watermark from the captured image and acquire information about the image display device. For example, when a single display device cannot sufficiently convey information to all people, such as a large venue such as a lecture hall, there are cases where it is desired to display the same content on a plurality of image display devices. In such a case, according to the present invention, as described above, setting information of another image display device can be acquired without being displayed on the screen, or the setting information can be unified among the display devices.

(4) In the information acquisition device for the image display device according to (3), when a setting operation for setting the state of the image display device is performed by a user, setting information corresponding to the setting operation is set as the setting information. It is also possible to further provide setting information output means for outputting to the image display device.
This is because the information acquisition device of this image display device has a function as a remote controller capable of remotely controlling the image display device, and acquires information embedded as a digital watermark and performs an operation on it The image display device can be remotely controlled.

  (5) In the information acquisition / setting method for an image display device according to the present invention, the information acquisition device of the image display device acquires information about the image display device, and the image display device has the information on the acquired image display device. An information acquisition / setting method for an image display device that sets a state to a certain state, wherein the image display device embeds information relating to the image display device as an electronic watermark in an image displayed by the image display device And an image display step for displaying an image in which the digital watermark is embedded. The information acquisition device of the image display device is obtained by capturing a display image displayed by the image display device. A digital watermark reading step of reading out a digital watermark from the captured image and acquiring information relating to the image display device; A display step for displaying information about the image display device acquired in the output step, and a setting operation based on the display content of the display step, and setting for outputting setting information corresponding to the setting operation And an information output step.

  In this way, information related to the image display device is embedded and displayed as an electronic watermark in the image to be displayed, and the user images the image display device using an information acquisition device (such as a remote controller) of the image display device, Information about the image display device can be confirmed on a display screen provided in the information acquisition device.

  Accordingly, it is not necessary to superimpose and display information related to the image display device on the display image, and the display image is not hindered even during the display of the original display image. Further, the state of the image display device can be set to a certain state by the user performing a setting operation based on the contents confirmed on the display screen.

  (6) Another image display device of the present invention is an image display device capable of acquiring information relating to an image display device such as setting information and device information of the image display device, and having an imaging unit, wherein the imaging When information relating to the image display device is embedded as a digital watermark in the captured image captured by the means, the digital watermark reading processing means is provided for reading the digital watermark and obtaining information relating to the image display device. It is said.

This is an image display device having an image pickup means provided with a digital watermark read processing means capable of reading a digital watermark. According to this, for example, optimum setting information for displaying a certain content, etc. By capturing an image embedded as a digital watermark with an imaging unit provided in the image display device, the digital watermark can be read out from the captured image and setting information can be automatically acquired.
(7) In the information acquisition / setting method of the other image display device of the present invention, when displaying a certain content by the image display device having the imaging means, the optimum information for displaying the content is acquired, An information acquisition / setting method for an image display device that sets the image display device in a certain state based on the acquired information, wherein the image in which information optimal for displaying the content is embedded with a digital watermark is captured An information acquisition step of reading out a digital watermark from a captured image obtained by imaging by means and acquiring information optimal for displaying the content, and information acquired by the information acquisition step of the image display device And a state setting step for setting the state to a certain state.

  As a result, it is possible to acquire optimal information for displaying the content and automatically set the acquired information. For example, when the content is a movie or the like, a display that appropriately reflects the intention of the creator of the movie can be performed, and the movie can be displayed in an optimal display state.

  Note that in the information acquisition / setting method of the image display device described in (5) and (7) and the image display device described in (6), the image display device also embeds an electronic watermark in the image to be displayed. It is desirable to have a digital watermark embedding selection means that can select either. Similarly, in the information acquisition / setting method of the image display device described in (5) and (7) and the image display device described in (6), the information acquisition device of the image display device includes the state of the image display device. When the user performs a setting operation for setting the setting information, it is possible to provide setting information output means for outputting setting information corresponding to the setting operation to the image display device.

(8) In the content in which the setting information of the image display device of the present invention is embedded, the setting information of the image display device is embedded as an electronic watermark in the image displayed by the image display device according to (6). It is characterized by that.
By displaying such content on the image display device described in (6), the image display device can acquire optimal information for displaying the content.

(9) In the content in which the setting information of the image display device according to (8) is embedded, it is preferable that the setting information of the digital watermark is embedded at the beginning of the image.
As a result, the image display device can acquire the setting information immediately after displaying the content, and the setting of the image display device is optimized for the content immediately after the display of the content is started. Can do.

(10) In the content in which the setting information of the image display device according to (8) or (9) is embedded, the setting information of the digital watermark is embedded in a necessary portion according to a change in the content of the image It is preferable.
For example, for each scene where it is desirable to switch setting information, the setting information to be set is embedded in the content as a digital watermark immediately before that scene. Even when the scene changes greatly, it can be displayed in an optimal state. Of course, it is possible to combine embedding this setting information in a necessary portion in accordance with a change in the content of the image and embedding the setting information described in (9) at the beginning.

  Embodiments of the present invention will be described below. The contents described in this embodiment include the description of the image display device of the present invention, the remote control device of the image display device, and the information acquisition / setting method of the image display device. In this embodiment, it is assumed that the image display device is a projector, and the information acquisition device of the image display device that acquires information related to the projector can remotely control the projector and has an imaging function. (Remote controller) will be described.

  Information relating to the projector includes setting information for setting the projector state to a certain state (for example, information for setting brightness, color adjustment, shape adjustment, etc. in various states) and device information of the projector. (Information such as temperature information from a temperature sensor provided inside the projector, information on the projector usage time, etc.) will be described, but in this embodiment, information related to the projector will be described as setting information.

Embodiment 1
First, the outline of the information acquisition / setting method of the image display apparatus of the present invention will be described with reference to FIG. In the present invention, the setting information of the projector 1 is embedded as an electronic watermark in an image displayed from the projector 1 as an image display device, and the image embedded with the electronic watermark is displayed on the screen 2 or the like.

Then, the display image displayed on the screen 2 is picked up by the image pickup means 30 of the remote controller (hereinafter referred to as a remote controller) 3, and a digital watermark is read from the picked-up data by a predetermined digital watermark reading algorithm, and the read electronic Setting information is acquired from the watermark, and the acquired setting information is displayed on the display screen 31 on the remote controller 3.
A user who operates the remote controller 3 can know from the setting information displayed on the display screen 31 of the remote controller 3 what setting the projector 1 is currently in.

  According to this, it is possible to notify the user without superimposing and displaying the setting information of the projector 1 on the original image displayed on the screen 2 as in the prior art.

  As described above, the setting information can be acquired by the remote controller 3, so that setting information of other projectors can be acquired, for example. For example, if you want to display the same content on multiple projectors in a large venue such as a lecture hall, you can obtain the setting information of other projectors without displaying them on the screen, or unify the setting information. It is effective to do.

  If the user knows in what format the digital watermark is embedded, for example, an imaging means such as a digital still camera is used as the information acquisition device of the image display device instead of the dedicated remote controller 3 as described above. If the display image of the projector 1 is picked up by image pickup means such as a digital still camera, setting information can be read from the picked-up image.

  FIG. 2 is a configuration diagram of the projector 1 as an image display device of the present invention, and FIG. 3 is a configuration diagram of a remote controller 3 as an information acquisition device of the image display device of the present invention. The configurations of the projector 1 and the remote control 3 shown in FIG. 2 and FIG. 3 show only the components necessary for explaining the present invention, and various functions for executing the original functions as the projector 1 and the remote control 3 are shown. Illustration of the components is omitted.

The projector 1 includes a digital watermark embedding selection switch 11 that can select whether or not to embed a digital watermark in display content supplied from a PC, a memory card, a network, etc., a setting information storage unit 12 that stores setting information, Setting information according to the digital watermark embedding processing unit 13 that embeds the digital watermark in the display content, the image display processing unit 14 that displays the display content, and the operation performed by the user on the remote control 3 (operation such as changing some setting value). The setting information input processing unit 15 for inputting the setting information, the setting information acquisition unit 16 for acquiring the setting information input to the setting information input processing unit 15 and rewriting the storage contents of the setting information storage unit 12 and the like.
The digital watermark embedding selection switch 11 is set to the terminal a side when the digital watermark is embedded in the display content, and is set to the terminal b side when the digital watermark is not embedded in the display content.

  On the other hand, the remote controller 3 includes an imaging unit 30, an electronic watermark reading processing unit 32 that reads out a digital watermark from a captured image captured by the imaging unit 30 using a predetermined digital watermark reading algorithm, and acquires setting information. A setting information storage unit 33 for storing the setting information acquired by the unit 32, and a setting for performing processing for displaying the setting information stored in the setting information storage unit 33 on the display screen 31 shown in FIG. The information display processing unit 34 receives a user operation (an operation such as changing some setting value) and acquires setting information corresponding to the operation, and the setting information acquisition unit 35 acquires the setting information. A setting information output unit 36 for transmitting the setting information to the projector 1 side by a communication method using infrared rays.

  The setting information acquired by the setting information acquisition unit 35 (setting information set by a user operation) is not only transmitted to the projector 1 by the setting information output unit 36 but also stored in the setting information storage unit 33. And displayed on the display screen 31 by the setting information display processing unit 34.

The operation of such a configuration will be described. On the projector 1 side, when the digital watermark is embedded in the display content, the digital watermark embedding selection switch 11 is set to the terminal a. As a result, the display content is input to the digital watermark embedding processing unit 13, and the setting information stored in the setting information storage unit 12 is embedded in the display content as a digital watermark.
The display content in which the setting information is embedded as a digital watermark is output as an image by the image display processing unit 14 and displayed on the screen 2 (see FIG. 1), for example.

  On the other hand, on the remote controller 3 side, an image displayed on the screen 2 or the like is picked up by the image pickup means 30, and a digital watermark read processing unit 32 performs a digital watermark read process on the picked-up image. The digital watermark read processing itself performed by the digital watermark read processing unit 32 is not the gist of the present invention, and various methods can be adopted, and the description thereof is omitted here.

  When the digital watermark is read by the digital watermark reading processing unit 32, the read digital watermark is decoded to obtain setting information. The acquired setting information is stored in the setting information storage unit 33, and the setting information stored in the setting information storage unit 33 is displayed on the display screen 31 by the setting information display processing unit 34. The setting information displayed on the display screen 31 is the setting information currently set in the projector 1.

  Then, based on the setting information (setting information currently set in the projector 1) displayed on the display screen 31, the user who operates the remote control 3 performs a remote control operation (for example, color adjustment or brightness adjustment operation). Etc.), the setting information corresponding to the remote control operation is acquired by the setting information acquisition unit 35. The setting information acquired by the setting information acquisition unit 35 is stored in the setting information storage unit 33, displayed on the display screen 31 by the setting information display processing unit 34, and sent to the projector 1 side by the setting information output unit 36. Sent.

  The setting information output from the remote controller 3 is input to the setting information input processing unit 15 of the projector 1, and setting information corresponding to the operation input performed by the user is acquired by the setting information acquisition unit 16, and this setting information acquisition unit The stored content of the setting information storage unit 12 is rewritten by the setting information acquired in 16.

  That is, when the user looks at the setting information set on the projector 1 at the current time displayed on the display screen 31 of the remote controller 3 and performs a remote control operation (for example, an operation of increasing the brightness a little more). The stored contents of the setting information storage unit 12 of the projector 1 are rewritten with the setting information corresponding to the remote control operation. This rewritten setting information becomes the setting contents at the present time.

  Note that the setting information stored in the setting information storage unit 12 is read by each state setting processing unit not shown in FIG. 2, and the state setting according to the read setting information is made. . For example, for setting information for setting the brightness of an image to a certain value, the state setting unit corresponding to the setting information reads the setting information and sets the brightness according to the read setting information.

  Subsequently, if the digital watermark embedding selection switch 11 is set to perform embedding of the digital watermark on the terminal a side, that is, the display content, the current setting information is read from the setting information storage unit 12, The read setting information is embedded in the display content by the digital watermark embedding processing unit 13, and the display content embedded with the digital watermark is displayed on the screen 2.

  On the remote controller 3 side, the image displayed on the screen 2 is picked up by the image pickup means 30, and the picked-up image is read by the digital watermark read processing unit 32. When the digital watermark is read by the digital watermark reading processing unit 32, the read digital watermark is decoded to obtain setting information. The acquired setting information is stored in the setting information storage unit 33, and the stored setting information is displayed on the display screen 31 as setting information at the present time by the setting information display processing unit 34.

When the user operating the remote controller 3 performs a remote control operation (for example, color adjustment or brightness adjustment operation) based on the setting information displayed on the display screen 31, settings corresponding to the remote control operation are performed. Information is acquired by the setting information acquisition unit 35. The setting information acquired by the setting information acquisition unit 35 is stored in the setting information storage unit 33, displayed on the display screen 31 by the setting information display processing unit 34, and sent to the projector 1 side by the setting information output unit 36. The stored information in the setting information storage unit 12 on the projector 1 side is rewritten by the same operation as described above by the setting information output from the remote controller 3 to be transmitted. Even if the setting information is displayed on the display screen 31 of the remote controller 3, if the user does not perform the remote control operation (for example, the setting information displayed on the display screen 31 is the content desired by the user). ), The stored contents of the setting information storage unit 12 on the projector 1 side are kept as they are.

  The above description is an example in which the digital watermark is set to be embedded in the display content. However, it is also possible not to embed the digital watermark in the display content. In that case, the digital watermark embedding selection switch 11 may be set on the terminal b side.

  As described above, when the digital watermark embedding selection switch 11 is set to the terminal b side, the display content is not input to the digital watermark embedding processing unit 13 but directly input to the image display processing unit 14 and the electronic watermark is embedded. It is projected on the screen 2 as a non-image. In this case, even when an image projected on the screen 2 is picked up by the remote controller 3 and the picked-up image is read out by the digital watermark read processing unit 32, a valid digital watermark is not read and setting information is not acquired.

  As described above, according to the first embodiment, it is possible to embed the setting information as a digital watermark in the display content, and the user side picks up the display image of the projector 1 with the remote controller 3, so 1 setting information can be displayed.

  As a result, the current setting information of the projector 1 can be presented to the user without superimposing and displaying the setting information of the projector 1 on the original display image as in the prior art. The display image is not obstructed.

  In addition, since the setting information can be acquired by the remote controller 3, for example, setting information of other projectors can be acquired. As described above, it is desired to display the same content on a plurality of projectors in a large venue such as a lecture venue. In such a case, the setting information of other projectors can be acquired without being displayed on the screen, or the setting information can be unified.

  Also, if you know what format the digital watermark is embedded in, you can set it from the captured image data by imaging the display screen with an imaging means such as a digital still camera instead of a dedicated remote control. Information can also be read, and setting information can be stored and distributed as general image data.

  In the first embodiment, whether or not to embed a digital watermark can be freely set by the digital watermark embedding selection switch 11. Thereby, it is possible not to embed a digital watermark in display contents that do not want to embed a digital watermark.

[Embodiment 2]
In the second embodiment, the image display device is a projection type image display device (projector) as in the first embodiment, but in the second embodiment, the projector has an imaging means. Think. Some projectors already have an image pickup unit capable of picking up a projected image for the purpose of correcting distortion of color and shape.

  In the second embodiment, for example, when creating a content such as a movie using a projector having such an imaging device, settings for enabling the projector that displays the movie to be displayed in an optimal state The information can be specified by the creator of the movie.

  FIG. 4 is an overall configuration diagram for explaining the second embodiment. The projector 1 has an imaging means (digital still camera or the like) 10 for enabling imaging of a projection screen (not shown in FIG. 4). Built in.

  For example, when a display content recording medium 4 such as a DVD (Digital Versatile Disc) in which display content (movie or the like) is stored is attached to the playback device 5 and projected on the screen by the projector 1, the display content recording medium 4 ( Before the reproduction of the DVD 4 is started, the user holds a printed material 7 such as a movie guide in the storage case 6 for storing the DVD 4 in front of the image pickup means 10 of the projector 1. The printed matter 7 is imaged.

  It is assumed that the printed material 7 is, for example, a jacket on which a title, a photograph, or the like is printed as an image for guiding the movie if the display content is a movie. Then, in the image printed on the printed matter 7, setting information (setting information that can display the movie in an optimum state) that can correspond to the model of each image display device is embedded as a digital watermark. deep.

  As components of the projector 1 necessary for realizing the second embodiment, as shown in FIG. 5, as shown in FIG. 5, setting information is read by reading a digital watermark from a captured image captured by the imaging unit 10. A digital watermark read processing unit 17 to be acquired, a setting information storage unit 12 that stores the read setting information, a state setting processing unit 18 that performs state setting based on the storage contents of the setting information storage unit 12, and a state setting processing unit 18 The image display processing unit 14 performs image display based on the state set in.

  Note that FIG. 5 also shows only the components necessary for explaining the second embodiment, as in FIG. 2, and omits the illustration of various components necessary for executing the original functions of the projector. Yes.

  In such a configuration, the printed matter 7 contained in the storage case 6 of the DVD 4 is imaged by the imaging means 10 of the projector 1 before reproducing the DVD 4. As a result, the picked-up image picked up by the image pickup means 10 is sent to the digital watermark read processing unit 17, and the digital watermark read process is performed by a predetermined digital watermark read algorithm. Here, if the captured image includes a digital watermark, the digital watermark is read out, setting information is acquired by decoding the digital watermark, and the acquired setting information is stored in the setting information storage unit 12. The

  Then, the state setting processing unit 18 performs state setting based on the setting information stored in the setting information storage unit 12, and the image display processing unit 14 performs image display based on the setting content in the state setting processing unit 18.

  As a result, the display image displayed by the projector 1 is an image that appropriately reflects the setting information specified by the creator of the display content. If the display content is a movie, for example, the intention of the creator of the movie Can be reproduced in a state that properly reflects.

  As described above, in the second embodiment, the optimum setting information for displaying the display content is automatically acquired, and the image display based on the acquired setting information can be performed. There is no need to perform an operation such as setting an optimum state. Moreover, as in the first embodiment, the setting information is not superimposed, so that the original display image is not hindered.

  In addition to the components shown in FIG. 5, the projector having the imaging means 10 used in the second embodiment has the digital watermark embedding processing unit 13, the digital watermark embedding selection switch 11, and setting information input shown in FIG. If the processing unit 15, the setting information acquisition unit 16 and the like are provided and the remote controller 3 shown in FIG. 3 is prepared, in addition to the operations described in the second embodiment, the same as described in the first embodiment. Operations can also be performed.

  In the above-described example, before reproducing the DVD, an image printed on the printed matter 7 (an image with an embedded digital watermark) is captured by the imaging unit 10, and the setting information is acquired by reading the digital watermark. However, the place where the setting information is embedded as a digital watermark is not the printed image such as the printed matter 7, but, for example, the beginning portion of the image projected by the projector 1 by playing the DVD 4 (the title of the movie) Setting information suitable for the movie may be acquired by embedding setting information as a digital watermark in a portion where a cast is displayed or the like, and capturing it with the imaging means 10.

  Also, by embedding setting information as a digital watermark at the location of the content to be displayed, for example, when the display content is a movie or the like, an optimal display state can be obtained depending on the scene.

  This is a setting in which a low-brightness image can be displayed with a high resolution on the projector 1 side when a low-brightness scene continues, and a suddenly high-brightness scene from the low-brightness scene. In such a case, setting information corresponding to the scene is automatically acquired by the projector 1 so that the setting is made so as to cope with the bright scene at the same time, and the acquired setting information is converted into the acquired setting information. Based on the state setting process.

  In order to realize this, for each scene where it is desirable to switch the setting information, the setting information to be set is embedded in the display content as a digital watermark immediately before the scene, and the projector 1 side displays the display information. A display image is picked up by the image pickup means 10 while projecting the content. Then, when the digital watermark reading processing unit 17 performs a reading process on the image captured by the imaging unit 10 and the digital watermark is read, setting information corresponding to the read digital watermark is acquired, and the acquired setting is acquired. Display images based on information.

  Accordingly, as described above, when a scene with low brightness continues, setting information such as increasing the resolution of an image with low brightness is acquired immediately before that, and based on the acquired setting information Optimal image display can be performed, and when the scene changes from a low brightness scene to a high brightness scene, setting information corresponding to the scene is acquired immediately before the scene changes to a bright scene. As a result, optimal image processing can be performed in the scene.

  In this way, setting information corresponding to each scene is embedded in the display content with a digital watermark, and the projector 1 captures the display content while projecting the display content, thereby capturing the scene at a necessary timing. The setting information corresponding to can be read out and displayed in an optimum state for each scene.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. For example, in the above-described embodiment, the projector is described as an example of the image display device. However, the present invention is not limited to the projector, and can be applied to other image display devices.

  In addition, the present invention can create a processing program in which the processing procedure for realizing the present invention described above is described, and the processing program can be stored in a storage medium such as a floppy disk, an optical disk, a hard disk, The present invention also includes a storage medium storing the processing program. Further, the processing program may be obtained from a network.

1 is an overall configuration diagram for describing Embodiment 1 of the present invention. It is a principal part block diagram of the image display apparatus shown in FIG. It is a principal part block diagram of the remote control as an information acquisition apparatus of the image display apparatus shown in FIG. It is a whole block diagram for demonstrating Embodiment 2 of this invention. It is a principal part block diagram of the image display apparatus shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Image display apparatus (projector), 2 screens, 3 Image display apparatus information acquisition apparatus (remote control), 10, 30 Imaging means, 11 Digital watermark embedding selection switch, 12, 33 Setting information storage part, 13 Digital watermark embedding processing part , 14 Image display processing unit, 15 Setting information input processing unit, 16, 35 Setting information acquisition unit, 17, 32 Digital watermark reading processing unit, 34 Setting information display processing unit, 36 Setting information output unit

Claims (10)

An image display device having a function capable of acquiring information related to the image display device such as setting information and device information of the image display device and presenting the acquired information related to the image display device to the user,
An image display device comprising: an electronic watermark embedding unit that embeds information relating to the image display device as an electronic watermark in an image displayed by the image display device.   2. The image display apparatus according to claim 1, further comprising: a digital watermark embedding selection unit capable of selecting whether or not to embed a digital watermark in the image to be displayed. An information acquisition device for an image display device capable of acquiring information about the image display device,
Imaging means capable of imaging a display image displayed by the image display device;
A digital watermark reading processing unit that reads out the digital watermark and acquires information about the image display device when information about the image display device is embedded as a digital watermark in the captured image captured by the imaging unit; ,
Display means capable of displaying information on the image display device acquired by the digital watermark reading processing means;
An information acquisition device for an image display device, comprising:   4. The information acquisition device for an image display device according to claim 3, wherein a setting operation for setting the state of the image display device is performed by a user, whereby setting information corresponding to the setting operation is transmitted to the image display device. An information acquisition device for an image display device, further comprising setting information output means for outputting. Information acquisition / setting method for an image display device in which information acquisition device of the image display device acquires information about the image display device and sets the state of the image display device to a certain state based on the acquired information about the image display device There,
The image display device includes an electronic watermark embedding step of embedding information relating to the image display device as an electronic watermark in an image displayed by the image display device, and an image display step of displaying the image embedded with the electronic watermark. Have
The information acquisition device of the image display device reads out a digital watermark from a captured image obtained by capturing a display image displayed by the image display device, and acquires information related to the image display device. Corresponding to the setting operation by performing a reading step, a display step for displaying information on the image display device acquired by the digital watermark reading step, and a setting operation based on the display contents by the display step. A setting information output step for outputting setting information to be
An information acquisition / setting method for an image display device. An image display device capable of acquiring information related to the image display device such as setting information and device information of the image display device, and having an imaging means,
In the case where information relating to the image display device is embedded as a digital watermark in the captured image taken by the imaging means, the digital watermark reading processing means is provided for reading out the digital watermark and obtaining information relating to the image display device. An image display device characterized by the above. When displaying a certain content by an image display device having an imaging means, an image display device that acquires information optimal for displaying the content and sets the image display device in a certain state based on the acquired information Information acquisition / setting method,
The digital watermark is read out from the captured image obtained by capturing the image in which the optimal information for displaying the content is embedded with the digital watermark by the imaging unit, and the optimal information for displaying the content is acquired. An information acquisition / setting method for an image display device, comprising: an information acquisition step; and a state setting step for setting the state of the image display device to a certain state based on the information acquired by the information acquisition step.   7. Content in which setting information of an image display device is embedded in an image displayed by the image display device according to claim 6, wherein the setting information of the image display device is embedded as a digital watermark.   9. The content embedded with the setting information of the image display device according to claim 8, wherein the setting information of the digital watermark is embedded at the beginning of the image. Content. 10. The image in which the setting information of the image display device according to claim 8 or 9 is embedded, wherein the setting information of the digital watermark is embedded at a necessary location in accordance with a change in the content of the image. Content with embedded display device information.