JP2020113102A - Projection image specification device, diagram projection system, method for specifying projection image, and program - Google Patents

Abstract

To provide specification means for easily specifying an image to be projected to a projector.SOLUTION: A projection image specification device is connected to a projector capable of projecting a predetermined range and an imaging device capable of imaging a projection-possible range of the projector. The projection image specification device includes: a diagram recognition unit for recognizing a diagram drawing operation by a user on the basis of an image taken by the imaging device; and a projection control unit for instructing the projector to project a diagram based on the diagram drawing operation.SELECTED DRAWING: Figure 6

Description

The present invention relates to a projection image designation device, a graphic projection system, a projection image designation method, and a program.

Patent Document 1 discloses an apparatus for setting a monitoring area of an automatic video monitoring system. According to this document, this device sets three markers at equal intervals on one side of the monitoring area, photographs them with the monitoring camera 20, and detects them with the image processing unit 12 to set the monitoring area. ..

Patent Document 2 discloses a position measurement drawing device that is easy to operate, can perform measurement work at a traffic accident site in a shortest time, and can easily create a site sketch at the accident site. According to the document, the position measuring/plotting device displays an image at a desired position photographed by the photographing means. Then, the position measurement drawing device creates a site sketch by detecting the coordinates of the marker placed at a desired position on the image.

JP, 2001-204007, A JP-A-2-281380

The following analysis is given by the present invention. There is a need to project an image of a specific shape using a projection device typified by a projector device. For example, by installing a projector in a room or aisle and presenting an image of an arbitrary color, attention can be given or a space effect can be produced. In short, by projecting an image of the shape of a center line or a pedestrian crossing on the passage in the building, it becomes possible to organize the traffic in the hall at any time.

It is an object of the present invention to provide a projection image designating device, a graphic projection system, a projection image designating method, and a program that can contribute to the provision of a simple designating method of an image projected on a projection device.

According to the first aspect, a projection device capable of projecting a predetermined range and a photographing device capable of photographing the projectable range of the projection device are connected, and based on an image photographed by the photographing device. And a projection control unit for recognizing a drawing operation of a user by a user, and a projection control unit for instructing the projection device to project a drawing based on the drawing operation of the drawing. Provided.

According to the second aspect, the projection device capable of projecting a predetermined range, the photographing device capable of photographing the projectable range of the projection device, and the user based on the image photographed by the photographing device. And a projection control unit that instructs the projection device to project a graphic based on the graphic drawing operation. A graphic projection system is provided.

According to the third aspect, a computer connected to the projection device capable of projecting a predetermined range and the photographing device capable of photographing the projectable range of the projection device is photographed by the photographing device. A step of recognizing a graphic drawing operation by the user based on the image; and a step of instructing the projection device to project a graphic based on the recognized graphic drawing operation by the user. A projection image designation method is provided. This method is tied to a specific machine, which is a projection image designation device that receives a drawing operation of a graphic from a user and instructs projection of the graphic.

According to the fourth aspect, a program for realizing the function of the above-described projection image designation device is provided. It should be noted that this program can be recorded in a computer-readable (non-transitary) storage medium. That is, the present invention can be embodied as a computer program product.

According to the present invention, it is possible to easily specify an image to be projected on the projection device.

It is a figure which shows the structure of one Embodiment of this invention. It is a figure for demonstrating operation|movement of one Embodiment of this invention. It is a figure for demonstrating operation|movement of one Embodiment of this invention. It is a figure for demonstrating operation|movement of one Embodiment of this invention. It is a figure for demonstrating operation|movement of one Embodiment of this invention. It is a figure for demonstrating operation|movement of one Embodiment of this invention. It is a figure which shows the structure of the area|region presentation system of the 1st Embodiment of this invention. It is a figure which shows an example of the area|region data which the area|region presentation system of the 1st Embodiment of this invention hold|maintains. It is a figure for demonstrating operation|movement of the area|region presentation system of the 1st Embodiment of this invention. It is a figure for demonstrating operation|movement of the area|region presentation system of the 1st Embodiment of this invention. It is a figure for demonstrating operation|movement of the area|region presentation system of the 1st Embodiment of this invention. It is a figure for demonstrating operation|movement of the area|region presentation system of the 1st Embodiment of this invention. It is a figure for demonstrating the effect of the area|region presentation system of the 1st Embodiment of this invention. It is a figure for demonstrating operation|movement of the area|region presentation system of the 2nd Embodiment of this invention. It is a figure for demonstrating operation|movement of the area|region presentation system of the 3rd Embodiment of this invention. It is a figure for demonstrating operation|movement of the area|region presentation system of the 3rd Embodiment of this invention. It is a figure for demonstrating operation|movement of the area|region presentation system of the 4th Embodiment of this invention. It is a figure for demonstrating operation|movement of the area|region presentation system of the 4th Embodiment of this invention. It is a figure which shows the structure of the computer which comprises the area|region presentation system of this invention.

First, an outline of one embodiment of the present invention will be described with reference to the drawings. The reference numerals in the drawings attached to this outline are added to the respective elements for convenience as an example for facilitating understanding, and are not intended to limit the present invention to the illustrated modes. Further, the connecting lines between blocks in the drawings and the like referred to in the following description include both bidirectional and unidirectional. The unidirectional arrows schematically show the flow of main signals (data), and do not exclude bidirectionality. Also, although there are ports or interfaces at the input/output connection points of each block in the figure, they are not shown. Further, in the following description, “A and/or B” is used to mean at least one of A and B.

In one embodiment thereof, the present invention is connected to a projection device 12 capable of projecting a predetermined range and a photographing device 11 capable of photographing the projectable range of the projection device 12, as shown in FIG. It can be realized by the projected image designation device 20. The projection image designating apparatus 20 is configured to recognize a drawing operation of a figure by a user on the basis of an image captured by the image capturing apparatus 11 and a projection apparatus 12 based on the drawing operation of the figure. A projection control unit 22 for instructing the projection of the figure.

The operation of the projection image designating device 20 will be described with reference to FIGS. First, as shown in FIG. 2, the user U places the marker M at the apex of the shape that the projection device 12 wants to project. Here, it is assumed that the user draws a triangle using three markers.

Next, the image capturing device 11 captures an image of the area including the markers M arranged by the user. The figure recognition unit 21 of the projection image designating apparatus 20 recognizes the drawing operation of the figure by the user based on the image photographed by the photographing apparatus 11. In the example of FIG. 3, the figure recognition unit 21 recognizes a triangle formed by the markers M. The figure recognition unit 21 passes the recognized contents to the projection control unit 22.

Next, the projection control unit 22 instructs the projection device 12 to project a triangle based on the drawing operation of the graphic. As a result, as shown in FIG. 4, the triangle TR1 having the three markers M as vertices is projected.

In a more desirable form, the projection image designating device 20 receives a correction operation by moving the marker M from the user. For example, as shown in FIG. 5, it is assumed that the user moves the rightmost marker M to the right.

The figure recognition unit 21 of the projected image designating apparatus 20 recognizes a user's operation of correcting a figure based on the image captured by the image capturing apparatus 11. Finally, the projection control unit 22 projects the triangle TR2 shown in FIG. 6 based on the content recognized by the graphic recognition unit 21. This triangle TR2 has a larger area than the triangle TR1 of FIG. 4 by moving the marker M at the right end further to the right.

It should be noted that the period for accepting the correction operation by moving the marker M from the user may be limited. For example, the correction operation may be accepted only for a certain period after the projection. Further, the figure recognition unit 21 may be made to recognize at the timing when a predetermined gesture or a correction request operation by the communication device is received from the user. Further, it is also possible to adopt a configuration in which a correction request function is assigned to a button or the like provided in the projection image designating device 20 and the operation starts (presses) to specify the start or end of the marker movement period.

As described above, according to the present embodiment, it is possible to cause the projection device 12 to project a graphic or the like having an intended shape by a simple operation. Note that, in the examples of FIGS. 2 to 6, the user arranges the markers M so as to have a triangular shape, but the shape that the projection image designation device 20 can recognize is not limited to the triangular shape. For example, it is possible to recognize a polygon having n vertices expressed by using n markers M. It is also possible to recognize and project an arbitrary straight line by using two markers. Further, by changing the type (shape, color) of the marker M, the difference of the figure recognition unit 21 can be recognized, so that not only the usual polygonal corner but also the rounded corner can be used properly. Good. In addition, in the examples of FIGS. 4 to 6, it has been described that the figure including the marker is recognized on the basis of the position of the marker, but the relationship between the position of the marker and the figure to be recognized can be determined by a separate rule. it can. For example, the inside of the marker may be recognized as a figure.

[First Embodiment]
Subsequently, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 7: is a figure which shows the structure of the area|region presentation system of the 1st Embodiment of this invention. Referring to FIG. 7, there is shown a configuration including a region recognition unit 101, a projection control unit 102, a region storage unit 103, a monitoring unit 104, a projection unit 106, and a photographing unit 107.

The projection control unit 102 projects the area using the area data registered in the area storage unit 103, using the projection unit 106 configured by one or more projection devices. As the projection device, one using a DLP (registered trademark) system, an LCD system (transmissive liquid crystal system), an LCoS system (reflective liquid crystal system), or the like can be used. DLP is an abbreviation for Digital Light Processing. LCD is an abbreviation for Liquid Crystal Display, and LCoS is an abbreviation for Liquid Crystal on Silicon. The projection control unit 102 corresponds to the projection control unit 22 described above.

Of course, the projection control unit 102 may control the projection unit 106 including a plurality of projection devices to perform projection.

The image capturing unit 107 includes one or more cameras that can capture an area that covers the projectable area of the projection unit 106. It is preferable that the image capturing unit 107 is arranged in parallel with and close to the projecting unit 106 so that the position of the subject can be specified at coordinates substantially the same as the output coordinates of the projecting unit 106. The image captured by the image capturing unit 107 is input to the area recognition unit 101 and the monitoring unit 104. The projectable area of the projection unit 106 and the shooting area (covering area) of the shooting unit 107 do not have to be the same.

The area recognition unit 101 recognizes a user's area setting operation based on the image captured by the imaging unit 107. Then, the area recognition unit 101 adds or reflects the information on the area set by the user to the area data of the area storage unit 103. Therefore, the area recognition unit 101 corresponds to the above-described figure recognition unit 21. When a plurality of image capturing units 107 are provided, the region recognition unit 101 acquires images from the plurality of image capturing units 107 and recognizes the user's region setting operation.

The area storage unit 103 holds data of an area to be projected by the projection control unit 102. FIG. 8 is a diagram showing an example of area data stored in the area storage unit 103. In the example of FIG. 8, the area of ID#1 is the area inside the five points (x1, y1), (x2, y2), (x3, y3), (x4, y4), and (x5, y5). Showing. Similarly, the area of ID#3 is an area inside three points of (x6, y6), (x7, y7), and (x8, y8). As these coordinates, the same coordinates as those used when the projection device projects on a general projection screen can be used. Note that the representation form of these areas is merely an example, and instead of these coordinates, for example, the physical position (latitude/longitude, height if necessary) of a point that becomes a node of each area is used. May be managed.

The monitoring unit 104 includes a person, a vehicle, a robot, an animal, etc. who approach the area projected by the projection control unit 102 from the image captured by the imaging unit 107 (hereinafter, these are collectively referred to as “intruder or intruder”). ,) and detect the movement. Then, the monitoring unit 104 implements a predetermined warning operation and a caution activation operation when detecting the invasion of these “intruders or intruders” into the area.

Next, the operation of this embodiment will be described in detail with reference to the drawings. FIG. 9: is a figure for demonstrating operation|movement of the area|region presentation system 100 of the 1st Embodiment of this invention. It is assumed that the user arranges a cone (traffic cone) used as a marker around the crane, as shown in the left diagram of FIG. 9, in a state where the image capturing unit 107 of the area presentation system 100 has started capturing.

The area recognition unit 101 of the area presentation system 100 identifies the position of the cone from the image captured by the imaging unit 107, creates area data, and registers the area data in the area storage unit 103. Here, it is assumed that five coordinates are specified as shown in the right diagram of FIG. As a result, area data corresponding to the area ID #1 in FIG. 8 is generated.

As a result, the projection control unit 102 can present the area Z1 as shown in FIG. 10 based on the area data read from the area storage unit 103. After that, by monitoring and warning the intruder in the area Z1 by the monitoring unit 104, the area Z1 can be monitored as a dangerous area.

It is also possible to set two or more areas described above. For example, it is assumed that the user has placed a cone (traffic cone) outside the danger area as shown in the left diagram of FIG. 11.

As shown in the right diagram of FIG. 11, the area recognition unit 101 of the area presentation system 100 specifies the position of the newly added cone from the image captured by the imaging unit 107, creates area data, and creates the area. Register in the storage unit 103. As a result, area data corresponding to the area ID #2 in FIG. 8 is generated.

As a result, the projection control unit 102 can present the area Z2 as shown in FIG. 12 based on the area data read from the area storage unit 103. After that, the monitoring unit 104 monitors an intruder in the area Z2. For example, when an intruder is detected in the area Z2, a warning activating operation is performed instead of a warning so that the area Z2 can function as a gray zone.

When correcting the regions Z1 and Z2, the following two methods can be adopted. One of them is a method of moving a cone (traffic cone) and causing the area recognition unit 101 of the area presentation system 100 to re-recognize it, as shown in FIGS. 5 and 6. The other method is to rearrange all cones (traffic cones) and cause the area recognition unit 101 of the area presentation system 100 to re-recognize them. In either case, since the area can be corrected while looking at the area projected by the projection control unit 102, the area correction work can be performed efficiently.

As described above, according to the area presentation system 100 of the present embodiment, it is possible to efficiently set the area to be projected by the projection device. The reason is to provide a simple user interface in which the area can be set by arranging a cone (traffic cone) while presenting the area by the projection control unit 102.

FIG. 13 is a diagram for explaining the superiority (effect) of the present invention with respect to the method of designating the point a2 from the captured image shown in the background art. The left diagram of FIG. 13 shows a state in which the point a2 is designated using the pointer P from the captured image shown in the background art. However, according to this method, as shown in the right diagram of FIG. 13, it becomes difficult to determine whether the point a3 on the same straight line as the point a2 is selected from the position of the camera or not. On the other hand, according to the present invention, as shown in FIG. 3, since the marker is actually arranged, and the marker is photographed and recognized by the camera, the problem that the intended range cannot be specified is solved. It will be.

In addition, in the above-described embodiment, the example in which the area is specified by photographing the cone (traffic cone) with the camera has been described, but the marker is not limited to the cone (traffic cone). Anything can be used as long as it can be recognized by the area recognition unit 101, and a marker plate or illuminant of any shape can be used as a marker. Further, the device used by the area recognition unit 101 to recognize the marker is not limited to the camera. For example, the position of the marker may be specified by using a distance sensor or the like that can specify the distance and direction to the marker. Further, for example, it is possible to adopt a configuration in which the marker itself is provided with a position measuring means such as GPS (Global Positioning System) and the position information is received. In this case, the area presentation system 100 includes a position information receiving unit.

[Second Embodiment]
Next, a second embodiment in which the area recognition method in the area recognition unit 101 is modified will be described in detail with reference to the drawings. The second embodiment of the present invention can be realized with the same configuration as that of the first embodiment, and therefore the differences in operation will be mainly described below. FIG. 14: is a figure for demonstrating operation|movement of the area|region presentation system 100 of the 2nd Embodiment of this invention. It is assumed that the user moves the cone and draws a region around the crane as shown in the left diagram of FIG. 14 in a state where the image capturing unit 107 of the region presentation system 100 starts capturing.

The area recognition unit 101 of the area presentation system 100 identifies the movement path of the cone from the image captured by the imaging unit 107, creates area data corresponding to the area surrounded by this movement path, and stores the area storage unit 103. Register with. For example, by drawing a pentagon similar to that in the first embodiment, the user can specify five coordinates as in the first embodiment. As a result, area data corresponding to the area ID #1 in FIG. 8 is generated. Of course, the user may move the cone to draw a free-form amorphous area. In that case, area data having coordinates of the locus of the marker may be created and registered in the area storage unit 103.

As described above, according to the present embodiment, it is possible to obtain a configuration in which the area can be designated by one marker. Of course, also in this embodiment, since the area can be corrected while observing the area projected by the projection control unit 102, the area correction work can be efficiently performed.

[Third Embodiment]
Next, a third embodiment in which projected markers (virtual markers) are used as markers will be described in detail with reference to the drawings. The third embodiment of the present invention can be realized with the same configuration as that of the first embodiment, and therefore the differences in operation will be mainly described below. FIG. 15: is a figure for demonstrating operation|movement of the area|region presentation system 100 of the 3rd Embodiment of this invention. When the user performs a predetermined gesture while the image capturing unit 107 has started capturing, virtual markers are displayed as shown in the left diagram of FIG. The display form of the virtual markers may be a form in which a plurality of virtual markers are displayed at one time, or may be a form in which one virtual marker is displayed at a position designated by the user according to the gesture of the user. ..

Then, the area presentation system 100 provides a position correction interface for these virtual markers by the user's (second) gesture using the projection unit 106 and the imaging unit 107. For example, the area presentation system 100 receives the movement of the virtual marker by dragging and dropping the virtual marker using the projection unit 106 and the imaging unit 107, as illustrated in FIG. 16. Then, finally, as shown in the right diagram of FIG. 16, the area where the user has moved the point (x2, y2) to the point (x2a, y2a) is specified.

As described above, according to the present embodiment, it is possible to obtain a configuration capable of designating an area without preparing a physical marker. Of course, also in this embodiment, since the area can be corrected while observing the area projected by the projection control unit 102, the area correction work can be efficiently performed. Also in the present embodiment, as in the second embodiment, a method of recognizing the movement locus of the virtual marker and recognizing the region can be adopted.

[Fourth Embodiment]
Next, a fourth embodiment in which the created areas can be combined and divided will be described in detail with reference to the drawings. The fourth embodiment of the present invention can be realized with the same configuration as that of the first embodiment, and therefore the differences in operation will be mainly described below. FIG. 17: is a figure for demonstrating operation|movement of the area|region presentation system 100 of the 4th Embodiment of this invention. For example, as shown in FIG. 17, it is assumed that two dangerous areas Z3 and Z4 have been created. When the user performs a predetermined area combining operation in that state, the area presentation system 100 creates a dangerous area Z5 by combining the dangerous areas Z3 and Z4 as shown in the right diagram of FIG.

FIG. 18: is a figure for demonstrating another operation|movement of the area|region presentation system 100 of the 4th Embodiment of this invention. For example, as shown in FIG. 18, it is assumed that the dangerous area Z5 has already been created. When the user stands in front of the projection unit 106 in that state, the user is hidden and the dangerous area Z5 is divided into two as shown in FIG. In that state, when the user makes a predetermined gesture, the area presentation system 100 divides the dangerous area Z5 into dangerous areas Z5-1 and Z5-2 as shown in the right diagram of FIG. 18.

As described above, according to the present embodiment, it is possible to obtain a configuration in which the shape of the region can be changed without moving the marker. Further, the region presentation system 100 may present a basic region figure such as a quadrangle, a triangle, and a circle by a predetermined gesture of the user. By doing so, a configuration for creating a region having an arbitrary shape can be obtained by combining and dividing these figures.

Although the respective embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and further modifications, replacements, and adjustments can be made without departing from the basic technical idea of the present invention. Can be added. For example, the device configuration, the configuration of each element, and the expression form of data shown in each drawing are examples for helping understanding of the present invention, and are not limited to the configurations shown in these drawings.

In each of the above-described embodiments, the present invention has been described by way of an example in which the area presentation system 100 is used to specify an area. However, with the same configuration, an arbitrary projected image such as a line or a pattern in a building is projected by projection. It can be applied to specified uses. For example, when projecting a line in a building, the region presentation system 100 may recognize a line drawn by a marker or the like and project the line.

The procedures shown in the above-described first to fourth embodiments can be realized by a program that causes a computer (9000 in FIG. 19) functioning as the area presentation system 100 to realize the function as the area presentation system 100. .. Such a computer is exemplified by the configuration including the CPU (Central Processing Unit) 9010, the communication interface 9020, the memory 9030, and the auxiliary storage device 9040 of FIG. That is, the CPU 9010 in FIG. 19 may execute the area recognition program and the projection control program to update the calculation parameters held in the auxiliary storage device 9040 and the like.

That is, each unit (processing unit, function) of the area presentation system 100 shown in each of the above-described embodiments is a computer that causes the processor mounted in the area presentation system 100 to execute the above-described processing using its hardware. It can be realized by a program.

Finally, the preferred forms of the invention are summarized.
[First form]
(Refer to the above-mentioned projection image designation device from the first viewpoint)
[Second mode]
The drawing operation of the figure by the user recognized by the above-mentioned projection image designation device is
It is a setting operation of three or more markers by the user,
The projection control unit may be configured to project an area delimited by the three or more markers.
[Third form]
The drawing operation of the figure by the user recognized by the above-mentioned projection image designation device is
An operation in which the user moves the marker to enclose the area,
The projection control unit may be configured to project an area designated by the locus of the marker.
[Fourth form]
In the projection image designating device described above,
A configuration using a virtual marker projected by the projection device can be adopted as the marker.
[Fifth form]
In the projection image designating device described above,
The figure recognition unit may be configured to recognize an operation performed on the virtual marker projected by the projection device by a gesture of the user.
[Sixth form]
In the projection image designating device described above,
The figure recognition unit may be configured to be capable of recognizing, as the gesture of the user, at least one of installation of the virtual marker, movement of the virtual marker, cutting of a region, and joining of regions.
[Seventh form]
In the projection image designating device described above,
The figure recognition unit recognizes a figure correction operation by a user who refers to the projected figure,
The projection control unit may be configured to instruct the projection device to project a graphic that reflects the correction operation of the graphic.
[Eighth mode]
(Refer to the figure projection system from the above second viewpoint)
[Ninth mode]
(Refer to the projection image designation method from the third viewpoint above)
[Tenth form]
(Refer to the program from the fourth viewpoint above)
The eighth to tenth modes can be expanded to the second to seventh modes, like the first mode.

It should be noted that the disclosures of the above patent documents are incorporated herein by reference. Modifications and adjustments of the exemplary embodiments and examples are possible within the scope of the overall disclosure (including claims) of the present invention and based on the basic technical concept of the invention. Further, within the framework of the disclosure of the present invention, various combinations or selections (parts) of various disclosed elements (including each element of each claim, each element of each embodiment or example, each element of each drawing, etc.) (Including targeted deletion) is possible. That is, it goes without saying that the present invention includes various variations and modifications that can be made by those skilled in the art according to the entire disclosure including the claims and the technical idea. In particular, with regard to the numerical range described in this specification, any numerical value or small range included in the range should be construed as being specifically described even if not otherwise specified.

11 Imaging Device 12 Projection Device 20 Projection Image Designation Device 21 Graphic Recognition Unit 22 Projection Control Unit 100 Region Presentation System 101 Region Recognition Unit 102 Projection Control Unit 103 Region Storage Unit 104 Monitoring Unit 106 Projection Unit 107 Imaging Unit 9000 Computer 9010 CPU
9020 communication interface 9030 memory 9040 auxiliary storage device M marker TR1, TR2 triangle U user Z1-Z5, Z5-1, Z5-2 area

Claims (10)

Connected to a projection device capable of projecting a predetermined range, and a photographing device capable of photographing the projectable range of the projection device,
A figure recognition unit for recognizing a drawing operation by a user based on an image taken by the imaging device;
A projection control unit for instructing the projection device to project a figure based on the drawing operation of the figure;
Projection image designation device equipped with. The drawing operation by the user is
It is a setting operation of three or more markers by the user,
The projection image designation device according to claim 1, wherein the projection control unit projects an area delimited by the three or more markers. The drawing operation by the user is
An operation in which the user moves the marker to enclose the area,
The projection image designating device according to claim 1, wherein the projection control unit projects a region designated by the locus of the marker. The projection image designation device according to claim 2, wherein the marker is a virtual marker projected by the projection device. The projection image designation device according to claim 4, wherein the figure recognition unit recognizes an operation performed on the virtual marker projected by the projection device by a gesture of the user. The projection image designation device according to claim 5, wherein the figure recognition unit is capable of recognizing, as the gesture of the user, at least one of installation of the virtual marker, movement of the virtual marker, cutting of a region, and joining of regions. The figure recognition unit recognizes a correction operation of a figure by a user who refers to the projected figure,
7. The projection image designation device according to claim 1, wherein the projection control unit instructs the projection device to project a graphic that reflects the correction operation of the graphic. A projection device capable of projecting a predetermined range,
A photographing device capable of photographing the projectable range of the projection device;
A figure recognition unit for recognizing a drawing operation by a user based on an image taken by the imaging device;
A projection image designating device comprising: a projection control unit for instructing the projection device to project a graphic based on the drawing operation of the graphic;
Figure projection system including. A computer connected to a projection device capable of projecting a predetermined range and a photographing device capable of photographing the projectable range of the projection device,
Recognizing a drawing operation of the user by the user based on the image photographed by the photographing device,
Instructing the projection device to project a figure based on the recognized drawing operation of the figure by the user,
Projection image designation method with. A computer connected to a projection device capable of projecting a predetermined range and a photographing device capable of photographing the projectable range of the projection device,
A process of recognizing a drawing operation of a user by a user based on an image taken by the imaging device;
A process of instructing the projection device to project a figure based on the recognized drawing operation of the figure by the user;
A program to execute.

Images