JP2004228806A - Data presentation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data presentation apparatus with simple constitution capable of recording an image for audience and an image for a presenter onto a recording data and displaying the images respectively for the audience and the presenter as the separate images. <P>SOLUTION: An image S2 to be concealed which is desired to be concealed as required is recorded on a paper material S by an infrared ray absorbent paint and in addition, a main image S1 visually confirmed by a visible light is also recorded on the paper material S. The paper material S is irradiated with infrared rays by an infrared ray light 23 to photograph the paper material S and a photographed image (main image S1 + image S2 to be concealed) is displayed on a presenter monitor 30. The photographed image (only the main image S1) whose image S2 is concealed is projected on an audience screen without emitting the infrared ray. Switching the image changeover switch 44 can display the photographed image (main image S1 + image S2 to be concealed) displayed on the monitor 30 onto the screen as required. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a document presentation device that captures a document such as a manuscript or a photograph and displays the captured image on a monitor such as a CRT or a liquid crystal display, or on a screen.
[0002]
[Prior art]
BACKGROUND ART In presenting lectures, explanations of products, classes, and the like while displaying the image of the above-mentioned materials on a screen or the like (this type of performance is referred to as a presentation here), in recent years, a material presentation device has been used. . The material presentation device generally includes a material placing table on which the material is placed, a camera for moving images having the material as a subject, a lamp for illuminating the material, and the like, and the material placed on the material placing table is photographed by the camera. An image captured by the camera, that is, a material image, is output to, for example, a liquid crystal projector. In that case, the liquid crystal projector projects the image on a screen, and the presenter explains the material while displaying the image to an audience.
[0003]
When giving a presentation, the presenter often prepares notes and manuscripts for explaining the material separately from the material, and explains the displayed material image while looking at it. However, such a method puts a burden on the presenter, and may inadvertently change the order of the memos and originals from that of the display image and cause confusion. Thus, the applicant of the present application has disclosed in Japanese Patent Application No. 2002-177038 that an image captured by a camera and an image of a storage unit or an image of an external device such as a personal computer can be output to two systems of a screen for an audience and a display visually recognized by a presenter. In addition, for example, in conjunction with page feed of the material image from the external device reflected on the screen, the image of the memo for explanation about the material image is displayed on the display, and the material reflected on the screen while looking at the display A system that can explain images was proposed.
[0004]
[Problems to be solved by the invention]
However, in the above proposal, after all, it is necessary to create a memo for explanation in addition to the material, and furthermore, it is necessary to register the two types of images in conjunction with each other. Although convenient when giving a presentation, there is a problem that the preparation work is complicated. Further, there is a disadvantage that the configuration of the system is complicated and it is difficult to manufacture the system at low cost.
[0005]
Accordingly, the present invention provides a material presentation device that can record an image for an audience and an image for a presenter in one material with a simple configuration, and can display these images separately for an audience and a presenter. It is intended to provide.
[0006]
[Means for Solving the Problems]
The present invention provides a document including an image to be concealed, which is recorded by a recording means for concealment and concealed as necessary, a material mounting table on which the material is mounted, and a material mounted on the material mounting table. And a concealment / disclosure switching unit for switching an image captured by the imaging unit between a state in which the concealed image is concealed and a state in which the concealed image is disclosed, and an image captured by the imaging unit is displayed. A monitor for a presenter in which the concealed image is a captured image that is not concealed, an image signal output means to a display device on which the image is displayed, and an image output to the display device are concealed by the concealment / disclosure switching means. An output image switching unit for switching between a captured image in which the concealed image is concealed and a captured image in which the concealed image is not concealed is provided.
[0007]
In the document presenting apparatus of the present invention, the image capturing section captures a document placed on the document mounting table, and the captured image is output to the presenter monitor and the display device. The display device referred to here is intended for an audience, and includes a projector that projects an image on a screen, a screen, a CRT, a liquid crystal display, and the like. An concealed image (such as the above-mentioned memorandum) which is not necessary for the audience or which is necessary in some cases is recorded in the material by the concealment recording means. In addition to the concealed image, an image to be displayed to both the audience and the presenter (the above-mentioned material image, etc., referred to herein as a main image) is also recorded in the material.
[0008]
The image captured by the imaging unit has a state in which the concealed image is concealed by the concealment / disclosure switching means and only the main image is shown, and a state in which the concealed image is disclosed and both the main image and the concealed image are shown. It can be switched to either. The captured image (main image + concealed image) in which the concealed image is disclosed is displayed on the presenter monitor. On the other hand, an image captured by the imaging unit is displayed on the display device, and the output image switching unit displays the image in which the concealed image is disclosed (main image + concealed image) or the concealed image (only the main image). ). Therefore, according to the material presentation device of the present invention, it is possible to record an image for the audience and an image for the presenter on one material without separately preparing the image, and to use the images for the display device and the monitor for the presenter. They can be displayed separately. In addition, a concealment / disclosure switching unit that switches a captured image of a material to a concealed image is disclosed, and an output image switching unit that selects a captured image to be output to a display device. Since it can be covered by one, it can be configured relatively simply.
[0009]
Various combinations of the concealment recording means and the concealment / disclosure switching means for recording the concealed image on the material can be considered variously. A combination with at least one of the infrared light transmitting filters that are inserted into and removed from the imaging optical path of the imaging unit is exemplified. When the concealment / disclosure switching means is the infrared light component ratio of the illumination light for document illumination, the concealed image by the infrared light absorbing paint is photographed and disclosed when the ratio is increased, and not photographed when the ratio is reduced. The captured image is only the main image. When the concealment / disclosure switching means is an infrared light transmitting filter, when the filter is removed from the photographing optical path, the image to be concealed by the infrared light absorbing paint is not photographed but is concealed. The concealed image recorded with the external light absorbing paint is photographed and disclosed. For example, by storing this image once and combining it with the main image, “main image + concealed image” can be displayed on the monitor for the presenter.
[0010]
As another recording means for concealment, recording with a specific color may be mentioned. In this case, the concealment / disclosure switching means may be an optical filter inserted into and removed from the imaging optical path of the imaging unit with the same color as the specific color, or an imaging unit. The color signal selecting means for removing or leaving the color signal of the specific color from the image signal of the image captured by the camera is used. Assuming that the specific color is red, for example, an image recorded on the material with red ink or the like becomes the concealed image. When an optical filter is used as the concealment / disclosure switching means, a red optical filter is used. When this red filter is provided so as to be freely inserted into and removed from the imaging optical path of the imaging unit and is inserted into the imaging optical path of the imaging unit, the captured image is concealed by the red filter, and only the main image is reflected. Further, when the red filter is removed from the imaging optical path of the imaging unit, a red concealed image is also displayed.
[0011]
The color signal selection means removes or leaves a color signal of a specific color from an image signal of a captured image. The specific color is selected from the color signals R (red), G (green), and B (blue), with R being the most suitable. When the specific color is red, when the R signal is removed from the image signal (RGB signal) of the captured image, only the image including the G and B signals, that is, only the main image from which the concealed image has been removed appears. Then, if the R signal is left without being removed, the captured image is displayed by all the color signals, so that a red concealed image is disclosed.
[0012]
According to the present invention, a virtual screen is set on the document stage and / or the presenter monitor, and an instruction mark for pointing to the virtual screen is provided, and the instruction mark photographed by the imaging unit is displayed on the virtual screen. Having a pointer function for synthesizing a predetermined point image with the coordinates of the image of the display device corresponding to the coordinates of. Point images are formed by image processing, for example, arrows that specify a certain part of the material are generally used, but in addition to this, lines, hand shapes, circles, etc., can be displayed in various shapes, It is also possible to draw by connecting the movement of the point coordinates.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
(1) First embodiment
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a presentation material presenting apparatus according to the first embodiment, and FIG. 2 is a block diagram systematically showing the configuration and functions of the apparatus. As shown in FIG. 1, a document presentation device of the present embodiment includes a document table 10 on which a material S is placed on an upper surface, an imaging unit 20 supported on the document table 10 via an arm 11, and a presenter And a lamp (not shown) for illuminating the material S placed on the material mounting table 10. The arm 11 has an L-shaped horizontal portion 11b fixed to the upper end of a column portion 11a erected from the left rear end portion of the material mounting table 10, and the tip of the horizontal portion 11b is substantially the same as the material mounting table 10. It is located above the center, and the imaging unit 20 is attached to the tip.
[0014]
The monitor 30 is attached to the back end of the document table 10 via a hinge 31 so as to be freely openable and closable. In an open state shown in FIG. 1, the screen faces forward, and the presenter visually recognizes the screen. The opening angle of the monitor 30 can be manually adjusted appropriately.
[0015]
As shown in FIG. 2, the imaging unit 20 includes a camera 21, an optical filter 22, and an infrared light 23, and is set with the subject direction facing the material mounting table 10 below. The optical filter 22 is capable of photographing only infrared light, which is invisible light, and is set so as to be freely inserted into and removed from the photographing optical path of the camera 21. The infrared light 23 irradiates light including infrared light toward a subject. The camera 21 has a zoom mechanism and an autofocus function. As shown in FIG. 2, a liquid crystal projector connected to an output terminal (image signal output means) of the control unit 40 built in the document mounting table 10 by processing a captured image of the imaging unit 20 by being input to the control unit 40. 50 and the monitor 30. From the liquid crystal projector 50, a captured image is projected on a screen (not shown). The imaging unit 20 may be rotatably mounted on the arm 11 so that the screen of the monitor 30 can be photographed.
[0016]
Reference numeral 60 in FIG. 1 denotes a pointing light pen used by the presenter while holding it. At the tip of the light pen 60, there is provided a light emitting section (instruction mark) 61 which is constituted by an LED or the like and emits infrared light when a switch (not shown) is pressed. The light emitted from the light emitting section 61 is invisible light transmitted through the optical filter 22. The presenter hits the light-emitting portion 61 of the light pen 60 on a portion of the document S to be instructed to emit light, thereby performing pointing so that the point image appears at the same position in the image shown on the screen. This pointer function is performed by the control unit 40. Note that the switch that causes the light emitting unit 61 to emit light may be a pressing switch that emits light when the light emitting unit 61 is pressed.
[0017]
Now, in the material S in this case, the main image and the concealed image are recorded. The main image is an image to be displayed to both the audience and the presenter, and is recorded by ordinary recording means visually recognized by visible light such as a printer or handwriting. The concealed image is an image that is not necessary for the audience but is necessary only for the presenter, and in some cases is also necessary for the audience, and is recorded by a transparent infrared light absorbing paint (recording means for concealment). You. This concealed image recorded by the infrared light absorbing paint absorbs the infrared light when irradiated with the infrared light 23, and the part without the infrared light absorbing paint reflects the infrared light. When the image is taken through the filter 22, the imaged image is displayed with the portion coated with the infrared light absorbing paint being black and the portion not coated being white in the taken image. The main image and the concealed image can be of various types depending on the content of the presentation.For example, the main image is a material such as a character, a table, or a photograph to be presented to an audience, and the concealed image is a presenter for explaining them. May be referred to as an explanatory memo. Further, for example, in a mathematics education class, a case where a main image is a problem in a mathematical expression and a concealed image is a solution thereof is also assumed.
[0018]
The control unit 40 is built in, for example, the material mounting table 10, and the control performed by the control unit 40 will be described below with reference to FIG.
a. Importing captured images
The captured image of the material S captured by the image capturing unit 20 is taken into the control unit 40, but the captured image is turned off by turning off the infrared light light 23, not irradiating the infrared light, and connecting the optical filter 22 to the camera 21. The “photographed image in the visible light state” removed from the photographing optical path and the “red image” when the infrared light 23 is turned on to irradiate infrared light and the optical filter 22 is inserted into the photographing optical path of the camera 21. Captured image in an external light irradiation state ".
[0019]
The captured image in the visible light state (indicated by A in FIG. 2) does not show the concealed image but only the main image because it is not irradiated with infrared light. The captured image in the infrared light irradiation state (indicated by B in FIG. 2) is a concealed image because the infrared light is irradiated and the optical filter 22 is inserted. At this time, if the absorptance of infrared light is high depending on the type of ink for the main image, the main image is also taken. In the present embodiment (in many cases), the black ink absorbs infrared light, but its absorption rate is smaller than that of the infrared light absorbing paint. Therefore, the portion drawn with black ink in the main image appears thinner than the portion drawn with the infrared light absorbing paint. The captured image A is input to the first image combining unit 41, where it is processed into a still image. Next, the captured image A is output from the image output unit 43 to the second image synthesizing unit 42 and the image changeover switch (output image changeover unit) 44.
[0020]
On the other hand, the captured image B is input to the storage unit 45 and is input to the second image synthesis unit 42 as a still image. In the second image synthesizing unit 42, the captured images A and B are synthesized, and the synthesized image A + B is output to the monitor 30 and the image switch 44. A liquid crystal projector 50 is connected to the image changeover switch 44, and the image output to the liquid crystal projector 50 is changed by the image changeover switch 44 from the photographed image A directly output from the image output section 43 or the second image synthesis section. The mode is switched to any one of the synthesized images A + B synthesized in 42. The image changeover switch 44 is arranged at an appropriate position on the material mounting table 10, for example.
[0021]
b. Pointer function using light pen
In the present embodiment, as described above, pointing to project a point image on the image projected on the screen from the liquid crystal projector 50 using the light pen 60 can be performed. For this purpose, the XY coordinates of the virtual screen are generated in advance in a photographing range on the material placing table 10 photographed by the image pickup unit 20 by a general image processing method. As a method of generating the virtual screen, for example, the light emitting points of infrared light arranged at the four corners of the screen in the photographing range are photographed by the photographing unit 20 in which the optical filter 22 is inserted in the photographing optical path of the camera 21, and the image is obtained. There is a method of recognizing the position of each light emitting point from data and generating XY coordinates in a photographing range based on the position.
[0022]
The point image is generated on the screen as follows. The imaging unit 20 is set to a light pen (indicating mark) shooting state (the optical filter 22 is inserted, and the infrared light 23 is turned off), and the light pen 60 emits light in a shooting range on the virtual screen, that is, on the document table 10. The part 61 is hit or moved to an arbitrary position. The position of the light emitting unit 61 of the light pen 60 is photographed by the imaging unit 20, and the coordinates of the light emitting unit 61 on the coordinates of the virtual screen are calculated by the coordinate generating unit 46 one by one based on the image data. Then, the image data and the coordinate data of the light emitting unit 61 are processed, and a point image (indicated by P in FIG. 2) is generated by the point image generating unit 47 at the calculated coordinates of the light emitting unit 61. The point image P is input to the first image synthesizing unit 41, where it is synthesized with the photographed image A.
[0023]
The combined image A + P combined by the first image combining unit 41 is output from the image output unit 43 to the second image combining unit 42 and the image switch 44. In the second image synthesizing unit 42, the captured image B and the synthesized image A + P are synthesized, and the synthesized image A + B + P is output to the monitor and the image changeover switch (output image changeover unit) 44.
[0024]
When pointing using the light pen 60, if the image changeover switch 44 is connected to the image output unit 43 side, the composite image A + P appears on the screen. When the image changeover switch 44 is switched to the second image synthesizing section 42, a synthesized image A + B + P similar to the image displayed on the monitor 30 is projected on the screen. Regarding the position of the image changeover switch 44 in the following description, the image output unit 43 side is referred to as a concealing side, and the second image combining unit 42 side is referred to as a public side.
[0025]
Next, the operation of the material presentation device will be specifically described.
FIG. 3A shows a specific example of the material S to be used. On this material S, characters “1. data” and “2. configuration” and a drawing M indicating the configuration are printed by an ordinary printer. ing. These print images are visible with visible light, the characters are black, and the drawing M is recorded in colors other than black and red. These are collectively referred to as a main image S1 here. In the document S, “detailed text of data” is displayed on the right side of “1. data”, and “description of configuration” is displayed on the right side of “2. Has been recorded. The images of the “detailed data sentence” and the “description of configuration” are recorded with a transparent infrared-absorbing paint for visible light, so they are shown but are not actually visible under visible light These images are collectively referred to as concealed images S2 here.
[0026]
An operation example of performing a presentation using the above-mentioned material S will be described with reference to FIGS. The material S is placed on the material mounting table 10, and since the concealed image S2 is not initially displayed to the audience, the image changeover switch 44 is set to the concealed side as shown in FIG. Next, the document S is photographed by the imaging unit 20 with visible light, that is, without irradiating infrared light with the infrared light light 23 and with the optical filter 22 removed from the photographing optical path of the camera 21 (FIG. 4: Step S101). In the visible light imaging, as shown in the captured image A in FIG. 3B, the concealed image S2 is not shown, and only the main image S1 is shown. The captured image A is, as shown in FIG. The image data is input to a first image combining unit 41 of the image processing unit 40, and is processed into a still image. The captured image A is output from the image output unit 43 to the second image synthesizing unit 42 and the image switch 44. Since the image changeover switch 44 is set on the concealing side as shown in FIG. 2, the photographed image A is output to the liquid crystal projector 50 and projected on the screen.
[0027]
Subsequently, the document S is photographed by the imaging unit 20 in a state where the infrared light 23 is irradiated and the optical filter 22 is inserted into the photographing optical path of the camera 21 (FIG. 4: step S102). The captured image at this time, as shown in a captured image B in FIG. 3B, includes black characters (1. data 2. configuration) of the main image S1 and the concealed image S2, and is a drawing of the main image S1. M is not reflected. Here, it is assumed that the black ink that represents the black characters absorbs infrared rays to some extent, so that the black characters are projected, though thinner than the concealed image. The concealed image S2 is illuminated by the infrared light 23, and is displayed as a high-contrast image because the optical filter 22 is inserted in the photographing optical path. The portion of the drawing M printed in a color other than black is the same as a sheet on which nothing is drawn because it reflects infrared light and is not reflected. The photographed image B is input to the storage unit 45, where the concealed image S2 is subjected to a binarization process of an image in which the concealed image S2 is black and the other portions are white, and the binarized photographed image B is converted into a still image. The process is performed (FIG. 4: step S103). By the binarization processing, only the concealed image S2 is processed into an image that clearly appears. Next, the captured image B that has been binarized and processed into a still image is input to the second image combining unit 42. In the second image synthesizing unit 42, the captured images A and B are synthesized (FIG. 4: step S104), and the synthesized image A + B is output to the monitor 30. Note that, in the image synthesis in this case, the black portion of the binarized photographed image B is used as the photographed image B, and the photographed image A is used for a portion other than black.
[0028]
As described above, the captured image A showing only the main image S1 is displayed on the screen viewed by the audience, and the composite image A + B shown in FIG. Therefore, at this point, the audience does not know the “details of data” or the “description of configuration”, while the presenter can explain the data and configuration while viewing these concealed images S2 on the monitor 30. .
[0029]
When the image changeover switch 44 is switched to the public side from the above state, the combined image A + B combined by the second image combining unit 42 is also projected on the screen, and the audience sees the combined image A + B. That is, the audience can see the “detailed text of data” and the “description of configuration”, which are the concealed images S2 that have not been displayed until now, at this stage.
[0030]
When the presenter points to the image projected on the screen with the light pen 60, the imaging unit 20 is set to the light pen shooting state (the infrared light 23 is turned off, the optical filter 22 is inserted), and the light emitting unit of the light pen 60 that emits light is set. 61 is moved or moved to a desired position of the material S. Then, as shown in FIG. 2, the point image P is input to the first image synthesizing unit 41, where it is synthesized with the photographed image A. FIG. 5A shows an example of the point image P. When the image changeover switch 44 is on the concealing side, the point image P is synthesized with the photographed image A as shown in FIG. Image A + P is projected on the screen. When the image changeover switch 44 is switched to the public side, a composite image A + B + P obtained by combining the photographed image B with the composite image A + P is projected on the screen as shown in FIG. 5C. As described above, the presenter can perform pointing regardless of whether the image projected on the screen is the captured image A (only the main image S1) or the composite image A + B (the main image S1 + the concealed image S2).
[0031]
According to the first embodiment, at first, the main image S1 displayed on the screen and the main image S1 for the presenter + the concealed image S2 always displayed on the monitor 30 are prepared in one material S without separately preparing them. In addition to providing the images, the two types of images can be separately displayed on the screen and the monitor 30 separately. Then, the image reflected on the screen can be instantaneously switched to either the main image S1 alone or the main image S1 + the concealed image S2 by the image switch 44. For this reason, the presenter does not need to create an explanatory memo or the like separately from the material S, and also explains the contents of the material S displayed to the audience while watching the description displayed on the monitor 30. So that the presentation can proceed smoothly.
[0032]
Further, as the configuration of the apparatus, the image pickup unit 20 is provided with the optical filter 22 and the infrared light 23, the control unit 40 processes the image appropriately, and the image changeover switch 44 switches the image reflected on the screen. Therefore, for example, since there is no need to externally attach an image generation device such as a personal computer to capture another image, the configuration can be made relatively simple.
[0033]
In the first embodiment, the operation of concealing and displaying the concealed image S2 as necessary is performed by using the infrared light absorbing paint recorded on the material S, the infrared light 23 of the imaging unit 20, and the optical filter. The second and third embodiments in which the concealed image S2 is printed in a specific color as another means, which is achieved by a combination with the second embodiment, will be described below.
[0034]
(2) Second embodiment
In the second embodiment, the concealed image recorded on the material is a red image (written for concealment) by writing with a red pen or printing with red ink instead of the infrared light absorbing paint of the first embodiment. Recording means). On the other hand, instead of the infrared light 23 and the optical filter (infrared light transmitting filter) 22, a red filter (concealment / disclosure switching means) is set in the imaging unit 20 so as to be freely inserted into and removed from the imaging optical path of the camera 21. I do.
[0035]
As an operation example of performing a presentation in the second embodiment, first, as shown in FIG. 6, the red filter is removed from the imaging optical path of the camera 21, and an image is taken by the imaging unit 20 in this state (FIG. 6: step S201). ). The photographed image at this time is the photographed image C shown in FIG. 7, that is, the main image S1 + the concealed image S2. In this case, the captured image C is output to the monitor 30 via the storage unit 45 and the second image combining unit 42. Next, the red filter is inserted into the photographing optical path of the camera 21, and a material is photographed by the imaging unit 20 in this state (FIG. 6: step S202). The captured image at this time is the captured image D in FIG. 7, that is, an image in which the concealed image S2 is concealed and only the main image S1 is shown. This is because the red concealed image S2 is not photographed by the red filter, and the photographed image D is entirely red due to the red filter (in the photographed image D of FIG. 7, the state is represented by many dots). Shown).
[0036]
The captured image D is input to the first image combining unit 41, where the red component is deleted from the image data (step S203). As a result, the photographed image D becomes a photographed image D ′ of a black and white image shown in FIG. 7, and this photographed image D ′ is output to the image output unit 43, and is output to the liquid crystal projector 50 when the image switch 44 is on the concealing side. And projected on the screen. That is, the audience watching the screen sees only the main image S1.
[0037]
Further, the captured image D 'is combined with the captured image C by the second image combining unit 42, and when the image changeover switch 44 is switched to the public side, the combined image C + D' is projected on the screen, and the audience also has the concealed image S2. You can see. The second embodiment is an example in which the concealed image S2 recorded in red is concealed by a red filter, but the concealed image S2 is other than red (although it is premised that black of the main image S1 is removed, of course). In this case, a filter of the same color as the concealed image S2 is used instead of the red filter.
[0038]
(3) Third embodiment
The concealed image S2 recorded on the material in the third embodiment is a red image as in the second embodiment. Further, the imaging unit 20 does not include the infrared light 23 and the infrared light transmitting optical filter 22 of the first embodiment, and the red filter of the second embodiment. In the third embodiment, instead of these, an R signal selection unit (concealment / disclosure switching) that removes or leaves an R signal of the same color as the concealed image S2 from an RGB signal, which is a color signal of a captured image, as necessary. Means). The R signal selection unit is provided in, for example, a first image synthesis unit 41 in the control unit 40.
[0039]
As an operation example of performing a presentation in the third embodiment, as shown in FIG. 8, first, an R signal selection unit is set to a state where an R signal is not removed and left, and a material is photographed by the imaging unit 20 (FIG. 8: step). S301). The photographed image at this time is the photographed image E of FIG. 9, that is, the main image S1 + the concealed image S2. In this case, the captured image E is output to the monitor 30 via the storage unit 45 and the second image synthesis unit 42. Next, a material is photographed by the imaging unit 20 in a state where the R signal is removed by the R signal selection unit (FIG. 8: step S302). The captured image at this time is input to the first image combining unit 41, where the R signal is removed (FIG. 8: step S303). The captured image is a captured image F in FIG. 9, that is, an image in which the concealed image S2 is concealed and only the main image S1 is shown. This is because the R signal is removed and only the signal including the G and B signals is output.
[0040]
The captured image E is output to the image output unit 43, and when the image changeover switch 44 is on the concealing side, is output to the liquid crystal projector 50 and is projected on the screen. That is, the audience watching the screen sees only the main image S1.
[0041]
The captured image F is combined with the captured image E by the second image combining unit 42, and when the image changeover switch 44 is switched to the public side, the combined image E + F is projected on the screen, and the audience can also see the concealed image S2. Can be. The third embodiment is an example in which the concealed image S2 recorded in red is concealed by an R signal selection unit. The concealed image S2 may be recorded in G (green) or B (blue) of RGB, and in that case, the color signal may be removed.
[0042]
In the second and third embodiments, the structure can be further simplified than in the first embodiment, and since the concealed image S2 only needs to be recorded in a specific color, there is an advantage that the material creation is simpler. There is. Needless to say, pointing with the light pen 60 can be performed in the same manner as in the first embodiment.
[0043]
(4) Fourth embodiment
Next, a fourth embodiment of the present invention will be described.
In the fourth embodiment, one material image is called out from a plurality of material images stored in the control unit 40 with a barcode captured by the imaging unit 20, and the material image is projected on a screen. . The control unit 40 recognizes the barcode for calling the image as unique information corresponding to the material image, and the material image is registered by linking to the barcode. Since the barcode is unnecessary for the audience and should be visually recognized by the presenter, it is displayed only on the monitor 30.
[0044]
In this case, the imaging unit 20 includes a camera 21, an optical filter 22, and an infrared light 23, as in the first embodiment. FIG. 10 shows a barcode sheet 70 on which a plurality of barcodes 71 are recorded with infrared light absorbing paint. In order for the control unit 40 to recognize each barcode 71, the barcode sheet 70 placed on the document table 10 is irradiated with infrared light by the infrared light 23, and the optical filter 22 is connected to the imaging optical path of the camera 21. An image is taken by the imaging unit 20 inserted in the camera. Each barcode 71 is photographed by the imaging unit 20 and image data is stored.
[0045]
Subsequently, the same shooting state is maintained, and the barcode 71 and the material image are linked and registered as follows. The infrared light 23 of the imaging unit 20 is turned off, the optical filter 22 is inserted into the photographing optical path to set a light pen photographing state, and one bar code is displayed while looking at the bar code sheet 70 displayed on the monitor 30. 71 is indicated by the light emitting unit 61 of the light pen 60. The control unit 40 recognizes the barcode 71 from the image data around the light emitting unit 61, converts the code, and recognizes the barcode 71 as one unique information. Next, visible light is photographed, that is, a material is photographed with the optical filter 22 removed from the photographing optical path of the camera 21 with the infrared light 23 turned off, and the photographed image is linked to the bar code 71 recognized earlier. Let me register. The above registration work is performed for each set of the barcode 71 and the material.
[0046]
At the time of presentation, first, the barcode sheet 70 is photographed and stored by the imaging unit 20 in an infrared light irradiation state. Next, the imaging unit 20 is set to a light pen shooting state, and a state is displayed in which the image of the barcode sheet 70 stored on the presenter monitor 30 and a point indicated by the light pen 60 are combined and displayed. The presenter specifies the barcode 71 of the barcode sheet 70 with the light emitting unit 61 of the light pen 60 while watching the monitor 30 on which the image is displayed. Then, a material image linked to the barcode 71 is projected on the screen. Although the barcode 71 recorded with the infrared light absorbing paint is invisible with visible light, it is displayed on the monitor 30, so that the position of the barcode 71 can be easily recognized and indicated while looking at the monitor 30. .
[0047]
【The invention's effect】
As described above, according to the present invention, an image for the audience and an image for the presenter can be recorded on one recording medium with a simple configuration, and these images are separately provided to the audience and the presenter. As a result, it is possible to reduce the burden on the presenter and to smoothly perform the presentation.
[Brief description of the drawings]
FIG. 1 is a perspective view of a document presentation device according to a first embodiment of the present invention.
FIG. 2 is a block diagram systematically showing a configuration and a function of a material presentation device.
3A is a document, and FIG. 3B is various photographed images of the document.
FIG. 4 is a flowchart illustrating an operation example of the first embodiment.
FIG. 5A is a point image, and FIGS. 5B and 5C are various photographed images including the point image.
FIG. 6 is a flowchart showing an operation example of the second embodiment according to the present invention.
FIG. 7 shows various photographed images of a material according to the second embodiment.
FIG. 8 is a flowchart showing an operation example of the third embodiment according to the present invention.
FIG. 9 shows various photographed images of a material according to the third embodiment.
FIG. 10 is a barcode sheet used in a fourth embodiment of the present invention.
[Explanation of symbols]
10: mounting table, 20: imaging unit, 21: camera, 22: optical filter,
23 ... infrared light, 30 ... monitor for presenter,
44 image switching switch (output image switching unit) 50 liquid crystal projector
61: Light-emitting part (instruction mark) of light pen, S: material, S1: main image
S2: concealed image.

Claims (5)

A material including a concealed image recorded by the concealment recording means and concealed as necessary,
A material mounting table on which this material is mounted,
An imaging unit for photographing the material mounted on the material mounting table,
Concealment / disclosure switching means for switching an image captured by the imaging unit between a state where the concealed image is concealed and a state disclosed.
A presenter monitor in which a captured image of the imaging unit is displayed, and the display image is a captured image in which the concealed image is not hidden,
Image signal output means to a display device on which an image is displayed,
An output image switching unit that switches an image output to the display device to either a captured image in which the concealed image is concealed by the concealment / disclosure switching unit or a captured image in which the concealed image is disclosed. Material presentation device characterized by the above-mentioned. The concealment recording means is an infrared light absorbing paint, and the concealment / disclosure switching means is adapted to detect a change in an infrared light component ratio of illumination light for material illumination and a red light inserted into and removed from a photographing optical path of the imaging unit. The document presentation device according to claim 1, wherein the device is at least one of an external light transmission filter. The concealment recording unit is a specific color, and the concealment / disclosure switching unit is an optical filter that is the same color as the specific color and that is inserted into and removed from the imaging optical path of the imaging unit. 2. The document presentation device according to 1. The concealment recording unit is a specific color, and the concealment / disclosure switching unit is a color signal selection unit that removes or leaves the color signal of the specific color from an image signal of an image captured by the imaging unit. The document presentation device according to claim 1, wherein: A virtual screen is set on the material mounting table and / or the presenter monitor, and an indication mark for pointing to the virtual screen is provided, and the indication mark photographed by the imaging unit is displayed on the virtual screen. The document presentation device according to any one of claims 1 to 4, further comprising a pointer function for combining a predetermined point image with coordinates of the image of the display device corresponding to the coordinates.

Images