JP4137685B2 - Document presentation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a presentation material presentation apparatus for photographing a document such as a manuscript or a photograph and displaying the photographed image on a monitor or a screen such as a CRT or a liquid crystal display.
[0002]
[Prior art]
In the case of giving a presentation such as a lecture or explanation of a product while displaying an image of the material as described above on a screen or the like, a material presentation device has been used in recent years. In general, the material presentation device is mainly composed of a material mounting table on which data is placed, a moving image camera having the material as a subject, and the like. An image taken by the camera, that is, a document image is output to, for example, a liquid crystal projector, and in this case, the image is projected from the liquid crystal projector onto the screen. Such a material presentation device is provided with a switch for executing functions such as camera focus adjustment and zoom adjustment. In addition, some material presentation devices are configured to output an image from a personal computer connected or an external storage medium inserted. Such a material presentation device includes a switch (button) that performs functions such as output image selection and output image page advance / return in addition to focus adjustment and zoom adjustment (for example, , See Patent Document 1).
[0003]
In addition, in the Japanese Patent Application No. 2002-177038, the present applicant outputs an imaging unit image, a stored image or an external image to two systems of a presenter monitor and a projector, and switches the output images, forwards / returns the screen, and further A material presentation device is proposed in which screen feed / return linkage is executed by a switch (predetermined key) on an operation panel provided on a material placement table.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-275415 (FIG. 1)
[0005]
[Problems to be solved by the invention]
A switch for executing the functions as described above is constituted by hardware accompanied by an entity. Therefore, those components are required for each switch, and the more functions there are, the greater the number of parts with the number of switches, leading to an increase in cost. In addition, there is a possibility that a push button type switch or the like may be damaged due to wear.
[0006]
Therefore, an object of the present invention is to provide a material presentation device that can delete a hardware switch for executing a presentation function and can be configured at low cost.
[0007]
[Means for Solving the Problems]
The present invention includes a material placement area on which a material is placed, an operation area representing a presentation function, and a material placement table on which a virtual screen is set, and at least the material placement table. An imaging unit as a shooting range, an image output unit that outputs an image signal to a display device, an instruction mark for pointing to the virtual screen, and data of a captured image by the imaging unit are input, and in the virtual screen When the coordinates of the instruction mark are calculated and the coordinates correspond to the coordinates in the material placement area, an instruction to synthesize a predetermined point image with the coordinates of the image in the display device corresponding to the coordinates is issued. and, when the coordinates corresponding to the operation area, issues an instruction to execute the function set for presentation in accordance with the coordinates, article placing region and If the coordinate none of the work area, and a control unit for executing a process that does not issue any of the instruction, the imaging unit, for that the photographing optical path, taking only light of a specific wavelength An enabling optical filter is removably provided, and the indication mark is a light emitting portion that emits light with a specific wavelength .
[0008]
The display device of the present invention refers to a screen on which an image is projected from a projection device such as a liquid crystal projector, a TV receiver or a liquid crystal display that displays an image by inputting image data. On the display device, an image of the material placed on the material mounting table and photographed by the imaging unit is displayed via the image output unit. Further, the virtual screen of the present invention is a two-dimensional space that is set to be superimposed on the material mounting table and in which XY coordinates are generated by image processing. The state indicated by the instruction mark is imaged on this virtual screen. When the image is captured by the unit, the control unit calculates the position of the instruction mark as a coordinate on the virtual screen, and issues an instruction to execute processing set in accordance with the coordinate.
[0009]
Specific processing includes a pointing function for combining a point image with a display image of a display device and a presentation function. That is, when an instruction mark is given in the material placement area of the material placement table, a predetermined point image is synthesized with the coordinates of the image in the display device corresponding to the coordinates of the instruction mark on the virtual screen. . Further, when an instruction in instruction mark is made in the operation area, the set function for presentation in accordance with the coordinates on the virtual screen is executed. Examples of the presentation function include point image shape setting and color setting. In addition, selection of an image supplied to the image output unit, page turning / returning of the screen, stillness of the output image, zoom magnification adjustment of the imaging unit, and the like can be given. In the present invention, a plurality of virtual screens are set in areas that do not overlap each other on the material placement table, and one of the virtual screens is set for the material placement area, and the other virtual screen is Including the form set in the operation area.
[0010]
According to the present invention, the operation instructed by the instruction mark in the operation area is the switch operation. Therefore, the conventional hardware switch can be deleted, and it can be configured at low cost. If a pointing area (material placement area) and an operation instruction area (operation area) are used together in one virtual screen, the virtual screen becomes large and there is a blank area that is not used between the two. As a result, the overall image resolution may be degraded. Therefore, if a plurality of virtual screens are set as described above, and the pointing and operation instruction virtual screens are individually set, there is a further advantage that deterioration of image resolution can be prevented.
[0011]
In the present invention, the imaging unit is provided with an optical filter capable of capturing only light of a specific wavelength so as to be detachable with respect to the imaging optical path, and the indication mark is a light emitting unit that emits light including the specific wavelength. Can be taken. Examples of the specific wavelength light include infrared light. In this mode, pointing to the material or giving an instruction to the switch unit is performed by the light emitting unit with the optical filter inserted in the imaging optical path of the imaging unit. Since the optical filter is inserted in the photographing optical path, the imaging unit can photograph only the light emitting unit, and therefore, the instruction mark can be reliably identified and a stable operation can be obtained.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1A and 1B show a presentation material presentation apparatus 1 according to an embodiment, and FIG. 2 is a block diagram systematically showing the configuration and functions of the apparatus 1. As shown in FIG. 1, the material presentation apparatus 1 includes a material mounting table 10 on which a material D is placed, an imaging unit 20 supported on the material mounting table 10 via an arm 11, and a presenter monitor 30. And. The arm 11 is configured such that an L-shaped horizontal portion 11b extending to the near side is fixed to an upper end of a support column portion 11a erected on the left rear end portion of the material mounting table 10, and the tip of the horizontal portion 11b is a material. The imaging unit 20 is attached to the top of the mounting table 10 and has the imaging table 20 as an imaging range at the tip thereof.
[0013]
The monitor 30 is attached to the back end portion of the document mounting table 10 through a hinge 31 so as to be freely opened and closed. In the opened state shown in FIG. 1, the screen is directed to the front side, and the user (presenter) displays the screen. Visually check. The opening angle of the monitor 30 can be manually adjusted appropriately.
[0014]
As shown in FIG. 2, the imaging unit 20 includes a camera 21 and an optical filter 22. The camera 21 has a zoom function and an autofocus function. The optical filter 22 is capable of photographing only infrared light which is invisible light, and is set so as to be detachable with respect to the photographing optical path of the camera 21. In this case, insertion / removal of the optical filter 22 is performed manually. As shown in FIG. 2, an image captured by the imaging unit 20 is captured and processed by the control unit 40, and is output from the image output unit 41 to the monitor 30 and the liquid crystal projector 50. From the liquid crystal projector 50, a photographed image is projected onto a screen (not shown). The control unit 40 is built in, for example, the material mounting table 10. The imaging unit 20 may be rotatably attached to the arm 11 so that the monitor 30 can also shoot.
[0015]
As shown in FIGS. 1 and 3, a material placement area for placing the material D is set on the upper surface of the material placement table 10, and an operation area is set on the front side of the material placement area. Yes. In the operation area, a plurality of rectangular switch units 70 having the same shape / size are arranged in a horizontal row at equal intervals. Each switch unit 70 is a simple space partitioned into a rectangular shape, and is provided by means such as printing a rectangular frame on the material mounting table 10 or attaching a seal printed with the frame.
[0016]
As shown in FIG. 1B and FIG. 3B, the control unit 40 uses a general image processing method, and a material placement area on the surface of the material placement table 10 photographed by the imaging unit 20. In the operation area, the XY coordinates of the pointing virtual screen S1 and the XY coordinates of the operation instruction virtual screen S2 are generated individually. As a method for generating these virtual screens S 1 and S 2, infrared light is emitted at the four corners of each region, and the imaging unit 20 in a state where the optical filter 22 is inserted into the photographing optical path of the camera 21 at the four light emitting points. And the position of each light emitting point is recognized from the image data.
[0017]
Reference numeral 60 in FIG. 1 denotes a light pen that the presenter uses in his / her hand. The light pen 60 includes a light emitting unit 61 composed of an LED or the like at the tip. When the light pen 60 is pressed against the light emitting unit 61, the light pen 60 is turned on and the light emitting unit 61 emits light. The light emitted from the light emitting unit 61 is invisible light that passes through the optical filter 22 of the imaging unit 20. In a state where the optical filter 22 of the imaging unit 20 is inserted into the imaging optical path, when the presenter emits light by applying the light emitting unit 61 of the light pen 60 to the portion to be instructed in the document D or the switch unit 70, An image is taken into the control unit 40 via the imaging unit 20.
[0018]
When there is an instruction (light emission instruction) from the light emitting unit 61 of the light pen 60 in the pointing virtual screen S1, the control unit 40 calculates the coordinates of the light emitting unit 61 and displays them on the monitor 30 and the screen corresponding to the coordinates. A predetermined point image is synthesized with the coordinates of the image. As a result, it is possible to point to the material image. Since the material D is not photographed because the optical filter 22 is inserted at the time of pointing, the material image captured by removing the optical filter 22 is temporarily displayed as a still image when pointing to the material image. Then, the optical filter 22 is inserted to perform pointing.
[0019]
Each switch unit 70 in the operation area photographed by the imaging unit 20 is stored in the control unit 40 as a coordinate area in the operation instruction virtual screen S2. The control unit 40 stores one presentation function in association with each coordinate area of one switch unit 70. This association can be performed arbitrarily by the user, for example, and is performed for all the switch units 70 or the number of necessary presentation functions. It is preferable to display the presentation function on the switch unit 70. Examples of the presentation function include point image shape setting and color setting at the time of pointing, and zoom magnification adjustment (increase / decrease) of the camera 21 of the imaging unit 20. When a light emission instruction is issued by the light emitting unit 61 of the light pen 60 in the operation instruction virtual screen S2, the function for presentation associated with the switch unit 70 is executed by the control unit 40.
[0020]
Hereinafter, a specific operation example of the control unit 40 will be described with reference to FIG.
First, it is detected whether or not there is a light emission instruction by the light pen 60 in each of the virtual screens S1 and S2 (step S101). If there is a light emission instruction, the coordinates of the light emission instruction point are detected (step S102). . Then, whether the coordinates are in the pointing virtual screen S1 or the operation instruction virtual screen S2 is detected (step S103). If the former, the coordinates are converted into the pointing virtual screen coordinates (step S103). In step S104, a point image is generated at the coordinates of the light emission instruction point in the coordinates (step S105). If it is detected in step S103 that the light emission instruction point is within the operation instruction virtual screen S2, it is converted into the operation instruction virtual screen coordinates (step S106), and then the coordinates of the light emission instruction point are any switch unit 70. Is detected (step S107). If it is detected in step S105 that the switch unit 70 is applicable, the presentation function associated with the switch unit 70 is executed (step S108).
[0021]
In the above embodiment, when the switch unit 70 is instructed by the light emitting unit 61 of the light pen 60, the control unit 40 recognizes and executes the presentation function from the position (coordinate area) of the light emitting unit 61. The switch unit 70 is a simple space that is partitioned at a predetermined position on the material mounting table 10 and is different from a hardware switch, so that the cost can be greatly reduced.
[0022]
FIGS. 1A and 3A show an example in which one virtual screen S surrounding the material placement area and the operation area is set on the material placement table 10. Similarly to the above embodiment, a pointing or presentation function can be executed by a light emission instruction from the light pen 60. However, in this way a combination of the operation area for the article placing region and presentation capabilities for pointing in one virtual screen S, the blank area is caused not used during virtual screen is increased, and both Therefore, the overall image resolution may be deteriorated. However, as shown in FIGS. 1B and 3B, the pointing virtual screen S1 and the operation instruction virtual screen S2 are individually set according to each area. By setting to, there is an advantage that deterioration of image resolution can be prevented.
[0023]
Further, when the light pen 60 instructs to emit light, the optical filter 22 is inserted into the photographing optical path, and at that time, the imaging unit 20 can photograph only the light emitting unit 61, and therefore, the control unit 40 has the light emitting unit 61. Can be reliably identified, and stable operation can be obtained.
[0024]
In the above-described embodiment, the switch unit 70 is provided on the material mounting table 10, but it can also be provided on the edge of the monitor 30 (for example, the lower edge). In that case, the imaging unit 20 is directed to the monitor 30, an operation instruction virtual screen is generated in the area where the switch unit 70 is arranged, and a pointing virtual screen is generated on the screen of the monitor 30. As a result, it is possible to point to the material image displayed on the monitor 30 instead of the material D, and the function for presentation can be executed by the switch unit provided on the monitor 30.
[0025]
In the above embodiment, the captured image (material image) of the material D placed on the material mounting table 10 is displayed on the monitor 30 and the screen. However, the present invention connects a personal computer or an external storage medium. The present invention can also be applied to a material presentation device of a type that can be inserted / driven and from which images can be displayed on a monitor and a screen. In that case, as a function for presentation, functions such as selection of an output image and page feed / return of the output image can be executed by the switch unit 70 as described above.
[0026]
【The invention's effect】
As described above, according to the present invention, the operation indicated by the indication mark can be applied as the switch operation in the operation area of the material placing table in which the virtual screen is set, so the hardware switch is deleted. Therefore, it can be configured at low cost. In addition, since each virtual screen is set individually, it is possible to prevent the image resolution from being deteriorated, and the processing is executed accurately.
[Brief description of the drawings]
FIG. 1 is a perspective view of a material presentation device according to an embodiment of the present invention. FIG. 1A shows a case where one virtual screen is generated on a material placing table, and FIG. A case where two virtual screens are individually generated is shown.
FIG. 2 is a block diagram systematically representing the configuration and functions of a material presentation device according to an embodiment.
FIG. 3A is a diagram showing an example in which one virtual screen is generated on a material mounting table, and FIG. 3B is a diagram showing an example in which two virtual screens for pointing and operation instruction are generated.
FIG. 4 is a flowchart illustrating an operation example of an embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Material presentation apparatus, 10 ... Material mounting table, 20 ... Imaging part, 22 ... Optical filter,
30 ... monitor (display device), 40 ... control unit, 41 ... image output unit,
50 ... Liquid crystal projector (display device), 61 ... Light emitting part (indication mark),
70 ... Switch part, S1 ... Virtual screen for pointing,
S2 ... Virtual screen for operation instructions.

Claims (4)

A material placement area on which a material is placed, an operation area representing a presentation function, and a virtual screen is set over these areas;
An imaging unit having an imaging range of at least this document mounting table;
An image output unit for outputting an image signal to a display device;
An instruction mark for pointing to the virtual screen;
Data of the image captured by the imaging unit is input, and the coordinates of the instruction mark in the virtual screen are calculated.
If the coordinates fall within the material placement area, issue an instruction to synthesize a predetermined point image with the coordinates of the image in the display device corresponding to the coordinates,
Wherein when a coordinate corresponding to the operation area, issues an instruction to execute the presentation features that are set according to the coordinates,
In the case of coordinates that do not correspond to any of the material placement area and the operation area, a control unit that executes a process that does not issue any of the instructions , and
The imaging unit is detachably provided with an optical filter that can shoot only light of a specific wavelength with respect to the imaging optical path, and the indication mark is a light emitting unit that emits light with light including the specific wavelength. A material presentation device characterized by that. A plurality of the virtual screens set on the material mounting table;
The plurality of virtual screens are set in non-overlapping areas on the material placement table,
One of them is set for the material placement area, the other one is set for the operation area,
The controller is
When an instruction is given to the one virtual screen with the instruction mark, an instruction to synthesize a predetermined point image with the coordinates of the image in the display device corresponding to the coordinates of the instruction mark in the virtual screen is issued.
Wherein the other indication in the indication mark on the first virtual screen is made, claims and issues an instruction to execute the function set for presentation in accordance with the coordinates of the marks within the virtual screen Item 1. The material presentation device according to Item 1.   The material presentation apparatus according to claim 1, wherein the presentation function is at least one of a shape setting or a color setting of the point image.   The presentation function is at least one of selection of an image supplied to the image output unit, page turning / returning of the screen, stillness of the output image, and zoom magnification adjustment of the imaging unit. The material presentation device according to claim 1 or 2.

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