JP2022145544A - Projection device, projection method, and program - Google Patents

Abstract

To provide a projection device capable of reducing the load required for processing for projecting an image to be easily viewed.SOLUTION: A projection device 1 includes a projector 3, an imaging device 4, a determination section 17, and a projection control section 18. The determination section 17 determines whether or not an identification mark 11 is normally displayed in an image captured by the imaging device 4. When the determination section 17 determines the identification mark 11 is not normally displayed, the projection control section 18 changes the position of the image projected from the projector 3 if a specific first condition is satisfied, and changes the scale of the image projected from the projector 3 if a specific second condition is satisfied.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to a projection device, a projection method, and a program.

A projection device is described in US Pat. In the projection device described in Patent Document 1, obstacles present on the projection plane are detected, and empty areas are identified. The device projects an image on the identified empty area.

JP 2017-163532 A

In the projection device described in Patent Literature 1, when projecting an image onto a product shelf, packages placed on the shelf are detected as obstacles. This processing is performed to project an image in an easy-to-view manner. However, since various objects are detected as obstacles, the projection apparatus described in Japanese Patent Application Laid-Open No. 2002-200310 has a problem that the processing load increases.

The present disclosure has been made to solve the problems described above. An object of the present disclosure is to provide a projection apparatus and a projection method that can reduce the load required for processing for projecting an image that is easy to see. Another object of the present disclosure is to provide a program for realizing such functions in a projection device.

A projection device according to the present disclosure includes a projector for projecting an image including an identification mark, a camera for capturing the image projected from the projector, and a normal display of the identification mark in the image captured by the camera. determination means for determining whether or not the identification mark is displayed normally, and if the determination means determines that the identification mark is not normally displayed, the position of the image projected from the projector is changed if a specific first condition is satisfied. and projection control means for changing the scale of the image projected from the projector if a specific second condition is satisfied.

A projection device according to the present disclosure includes a projector for projecting an image including an identification mark, a camera for capturing the image projected from the projector, and a normal display of the identification mark in the image captured by the camera. and projection control means for changing the position of the image projected from the projector when the determination means determines that the identification mark is not displayed normally.

A projection method according to the present disclosure includes a projecting step of projecting an image including an identification mark from a projector, a photographing step of photographing the image projected from the projector by a photographing device, and an identification mark in the image photographed by the photographing device. is normally displayed, and if it is determined in the determination step that the identification mark is not normally displayed, the image projected from the projector if a specific first condition is satisfied. and changing the scale of the image projected from the projector if a specific second condition is met.

A program according to the present disclosure is stored in a computer capable of communicating with a projector for projecting an image including an identification mark and a camera for capturing an image projected from the projector, and the image captured by the camera has an identification mark. Determination processing for determining whether or not the identification mark is displayed normally; and a projection control process for changing the position and changing the scale of the image projected from the projector if a specific second condition is satisfied.

A projection device according to the present disclosure includes, for example, a projector, a camera, determination means, and projection control means. The determination means determines whether or not the identification mark is normally displayed in the image captured by the camera. The projection control means changes the position of the image projected from the projector if the determination means determines that the identification mark is not displayed normally, if a specific first condition is satisfied, and changes the position of the image projected by the projector to meet the specific second condition. is established, the scale of the image projected from the projector is changed. With the projection device according to the present disclosure, it is possible to reduce the load required for processing for projecting images in an easy-to-view manner.

1 is a diagram illustrating an example of a projection device according to Embodiment 1; FIG. It is a perspective view which shows the usage example of a projection apparatus. FIG. 4 is a diagram showing an example of an image captured by a camera; 4 is a flowchart showing an operation example of the projection device according to Embodiment 1; FIG. 10 is a diagram for explaining a projection position changing function; FIG. 10 is a diagram for explaining a function of changing the projection scale; 8 is a flowchart showing another operation example of the projection device according to Embodiment 1. FIG. 8 is a flowchart showing another operation example of the projection device according to Embodiment 1. FIG. 8 is a flowchart showing another operation example of the projection device according to Embodiment 1. FIG. It is a figure which shows the example of the hardware resources of a computer. FIG. 4 is a diagram showing another example of hardware resources of a computer;

A detailed description is given below with reference to the drawings. Duplicate descriptions are appropriately simplified or omitted. In each figure, the same reference numerals denote the same or corresponding parts.

Embodiment 1.
FIG. 1 is a diagram showing an example of a projection device 1 according to Embodiment 1. FIG. FIG. 2 is a perspective view showing a usage example of the projection device 1. As shown in FIG.

The projection device 1 has a case 2 . The projection device 1 also includes a projector 3 , a camera 4 , a computer 5 and a router 6 . Projector 3 , camera 4 , computer 5 and router 6 are supported by case 2 . 1 and 2 show an example in which the projector 3, camera 4, computer 5, and router 6 are arranged inside the case 2. FIG. The projection device 1 may be a device in which a computer 5 is connected to each of the projector 3, camera 4, and router 6 by wire or wirelessly. In such a case, the computer 5 may be a computer capable of communicating with the projector 3, camera 4, and router 6. FIG.

The projector 3 includes a projection unit 7 for projecting an image and a speaker 8 for outputting sound. Speaker 8 is an example of an annunciator. A lamp may be provided in the projector 3 as an annunciator. The speaker 8 may be provided in the projection device 1 as a separate device from the projector 3 .

FIG. 2 shows an example in which the image projected from the projector 3 is projected on the same plane as the case 2 is placed. For example, the projection device 1 is placed in the lobby of a building. The image from the projector 3 is projected onto the floor of the lobby. As another example, the projection device 1 is placed at an elevator hall. The image from the projector 3 is projected onto the floor of the landing.

The photographing device 4 includes a photographing section 9 . A photographing unit 9 photographs an image projected from the projector 3 . FIG. 3 is a diagram showing an example of an image captured by the camera 4. As shown in FIG. An image projected from the projector 3 includes an information providing image 10 . The image includes an identification mark 11 . FIG. 3 shows an example in which an image projected from the projector 3 includes nine identification marks 11-1 to 11-9. In the following description, the identification marks included in the image will simply be referred to as identification marks 11 unless it is necessary to specify them individually.

The information provision image 10 is for providing specific information to the user who has viewed the image. The information providing image 10 may include an image for guidance or may include an image for calling attention. The information providing image 10 may be a moving image, that is, a moving image. The information providing image 10 may be a motionless image, that is, a still image. The information providing image 10 may be a combination of moving images and still images. The information providing image 10 shown in FIG. 3 includes a pattern indicating an arrow and characters "Exit 5a". A user who sees this information providing image 10 understands that he/she can go to "Exit 5a" by proceeding in the direction indicated by the arrow.

The identification mark 11 may be any mark that can be identified from the captured image. FIG. 3 shows an example in which the identification mark 11 is a two-dimensional color bar code. The identification mark 11 may be a two-dimensional code. The identification mark 11 may be a bar code. The image projected from the projector 3 preferably has identification marks 11 at the four corners of the image. The number of identification marks 11 included in the image can be set arbitrarily.

The router 6 has a wireless communication section 12 . The router 6 controls communication functions with external devices. FIG. 1 shows an example in which the external device is a tablet terminal 13 . In the example shown in FIG. 1 , the projection device 1 can be operated from the tablet terminal 13 .

The computer 5 includes an acquisition unit 15 , an analysis unit 16 , a determination unit 17 , a projection control unit 18 and a notification control unit 19 . A projection control unit 18 and a notification control unit 19 control the projector 3 . The notification control section 19 controls the speaker 8 of the projector 3 . The functions of the projection device 1 will be described in detail below with reference to FIGS. 4 to 6 as well. FIG. 4 is a flow chart showing an operation example of the projection device 1 according to the first embodiment.

In S101, the projection control unit 18 projects an image including the information providing image 10 and the identification mark 11 from the projector 3 toward the standard position at the standard scale. A standard position is preset. A standard scale is preset. Next, in S<b>102 , the camera 4 shoots the image projected from the projector 3 . The acquisition unit 15 acquires the photographed data from the camera 4 (S103).

The analysis unit 16 analyzes the photographed data acquired by the acquisition unit 15 (S104). As an example, the analysis unit 16 identifies each of the identification marks 11 . The analysis unit 16 may specify each position of the identification mark 11 . The analysis unit 16 may specify each position of the identification mark 11 as a relative position from the reference position. The reference position may be one of the identification marks 11 .

Next, the determination unit 17 determines whether or not the identification mark 11 is normally displayed in the image captured by the camera 4 (S105). The determination in S<b>105 by the determination unit 17 is performed based on the analysis result by the analysis unit 16 . As an example, when the identification mark 11 cannot be identified in the image captured by the camera 4, the determination unit 17 determines that the identification mark 11 is not displayed normally (No in S105). For example, even if the identification marks 11-1 to 11-8 can be specified, if the identification mark 11-9 cannot be specified, the determination in S105 is No.

As another example, when the position of the identification mark 11 in the image captured by the camera 4 is deviated from the position registered in advance, the determination unit 17 determines that the identification mark 11 is not displayed normally. (No in S105). For example, even if the identification mark 11-9 can be specified, the distance between the detected identification mark 11-9 and the position registered in advance as the position where the identification mark 11-9 should exist does not exceed the threshold. If it exceeds, it is determined as No in S105.

If all the identification marks 11 can be specified as a result of the analysis by the analysis unit 16 and there is no deviation in the positions of all the identification marks 11, the determination unit 17 determines that the identification marks 11 are displayed normally. (Yes in S105). If determined as Yes in S105, the process returns to S101. That is, unless the determination unit 17 determines that the identification mark 11 is not displayed normally, the projection control unit 18 projects the image from the projector 3 toward the standard position with the standard scale.

If the determination in S105 is No, the projection control unit 18 performs adjustment processing for projecting the image from the projector 3 in an easy-to-view manner. The adjustment process includes a process of changing the projection position and a process of changing the projection scale. In the example shown in FIG. 4, the projection control unit 18 first changes the position of the image projected from the projector 3 when it is determined as No in S105 (S106).

FIG. 5 is a diagram for explaining the projection position changing function. For example, if the determination in S105 is No because the identification mark 11-9 cannot be specified, the projection control unit 18 moves the identification mark 11-9 toward the center of the image, that is, in the direction indicated by the arrow A. , the image projected from the projector 3 is moved. The distance to move the image is preset. The movement may be performed such that the position of the identification mark 11-9 after movement is arranged at the position of the identification mark 11-5 before movement. The identification mark 11-5 is an identification mark placed in the center of the image.

Next, in S107, the same processing as the processing shown in S102 to S104 is performed. Thereafter, the determination unit 17 determines again whether or not the identification mark 11 is normally displayed in the image captured by the camera 4 in S107 (S108). The processing shown in S108 is the same as the processing shown in S105.

If the determination in S108 is No, the projection control unit 18 performs adjustment processing again for projecting the image from the projector 3 in an easy-to-view manner. In the example shown in FIG. 4, the projection control unit 18 changes the scale of the image projected from the projector 3 when it is determined as No in S108 (S109).

The process of changing the scale of the image by the projection control unit 18 is the process of reducing or enlarging the image. Whether the projection control unit 18 performs processing to reduce or enlarge the image in S109 follows a predetermined rule. For example, if a relatively large scale is set as the standard scale, it can be determined in advance so that processing for reducing the image is executed in S109. As a result, the image is gradually reduced by the execution of S109 each time it is determined as No in S108. Similarly, if a relatively small scale is set as the standard scale, it can be determined in advance so that processing for enlarging the image is executed in S109. In this case, the image is gradually enlarged by the execution of S109 each time it is determined as No in S108. Further, in S109, the projection control unit 18 basically reduces the image projected from the projector 3, and if the degree of reduction exceeds a preset standard, the process of reducing the image. Alternatively, processing for enlarging the image may be performed. Similarly, in S109, the projection control unit 18 basically enlarges the image projected from the projector 3, and if the degree of enlargement exceeds a preset standard, enlarges the image. A process of reducing the image may be performed instead of the process. A simple example in which the processing by the projection control unit 18 in S109 is processing for reducing the image will be described below.

FIG. 6 is a diagram for explaining the function of changing the projection scale. For example, if the determination in S108 is No because the identification mark 11-9 cannot be identified, the projection control unit 18 moves the identification mark 11-9 closer to the center of the image, that is, in the direction indicated by arrow B. First, the image projected from the projector 3 is reduced at a constant rate. The rate at which the image is reduced is preset.

In the example shown in FIG. 6, the position of the image projected from the projector 3 is also changed in S109. As another example, in S109, the image projected from the projector 3 may be reduced so that the position of the image is not changed. That is, the image projected from the projector 3 may be reduced so that the center position of the image does not change.

Next, in S110, the same processing as the processing shown in S102 to S104 is performed. After that, the determination unit 17 determines again whether or not the identification mark 11 is normally displayed in the image captured by the camera 4 in S110 (S111). The processing shown in S111 is the same as the processing shown in S105. A series of processes from S106 to S111 are repeatedly performed until it is determined as Yes in S108 or S111.

If it is determined as Yes in S108 or S111, it is determined whether or not a certain period of time has passed (S112). After a certain period of time has passed after the determination of Yes in S108 or S111, the process returns to S101. That is, when the determination in S112 is Yes, the projection control unit 18 projects the image from the projector 3 toward the standard position with the standard scale.

In the projection apparatus 1 according to the present embodiment, the projection control unit 18 performs adjustment processing for projecting an image from the projector 3 in an easy-to-see manner based on the determination result as to whether or not the identification mark 11 is normally displayed. I do. That is, the projection control unit 18 changes the position of the image projected from the projector 3 or changes the scale. The projection apparatus 1 according to the present embodiment can reduce the load required for the adjustment process.

Other functions that can be employed by the projection device 1 will be described below. If possible, the projection device 1 may employ a combination of the functions described below.

As shown in FIG. 2, when the image from the projector 3 is projected on the same surface as the projector 1 is placed, there is a possibility that the lens of the projector 3 is arranged at a position where children can easily look into. There is In order to prevent such peeping, the notification control unit 19 may perform specific notification from the speaker 8 when the projection position is changed in S106 and when the projection scale is changed in S109. As the notification, the notification control unit 19 may display a message "Do not look into" on the display.

In the example shown in FIG. 4, a suitable example has been described in which the process of changing the projection position is performed in S106 and the process of changing the projection scale is performed in S109 as the adjustment process for projecting the image from the projector 3 in an easy-to-see manner. . In S109, the projection scale may be changed so that the position of the image projected from the projector 3 is always changed. As another example, if the determination in S108 is No, the process may return to S106. That is, as the adjustment process, only the process of changing the projection position may be performed.

FIG. 4 shows an example of the adjustment process, in which the projection position is changed when a specific first condition is satisfied, and the projection scale is changed when a specific second condition is satisfied. That is, FIG. 4 shows an example in which the establishment of the first condition and the establishment of the second condition are determined according to the number of times the determination unit 17 continuously determines that the identification mark 11 is not displayed normally. Hereinafter, "the number of consecutive determinations by the determination unit 17 that the identification mark 11 is not displayed normally" is also referred to as "the number of consecutive determinations".

FIG. 7 is a flow chart showing another operation example of the projection device 1 according to the first embodiment. As described above, in the example shown in FIG. 4, the first condition is met if the number of consecutive determinations is an odd number. If the number of consecutive determinations is an even number, the second condition is met. However, in the example shown in FIG. 4, if the determination of No in S108 and S111 continues after the determination of No in S105, the image from the projector 3 will continue to move and be reduced. Such an event can occur, for example, when many people stop in front of the projection device 1 .

FIG. 7 shows an operational flow for preventing such an event from occurring. Specifically, FIG. 7 corresponds to an example in which the determination process of S213 is added to the example shown in FIG. That is, the example shown in FIG. 7 is substantially the same as the example shown in FIG. 4 except for the determination process of S213. Therefore, in the example shown in FIG. 7 as well, the first condition is met if the number of consecutive determinations is an odd number, and the second condition is met if the number of consecutive determinations is an even number.

In the example shown in FIG. 7, n=1 is set in S200. The processing from S201 to S205 in FIG. 7 is the same as the processing from S101 to S105 in FIG.

If the determination unit 17 determines that the identification mark 11 is normally displayed (Yes in S205), the process of S212 is performed, and then the process returns to S200. The process shown in S212 of FIG. 7 is the same as the process shown in S112 of FIG. That is, if the determination in S205 is Yes when n=1, the projection control unit 18 continues projecting the image from the projector 3 toward the standard position at the standard scale.

If it is determined No in S205, it is determined in S213 whether or not n is equal to or greater than the reference number of times nth. The reference number of times nth is set in advance. n represents the number of consecutive determinations. That is, when the number of consecutive determinations reaches the reference number of times nth, it is determined as Yes in S213. If it is determined as Yes in S213, n is reset to 1. Also, if it is determined as Yes in S213, the projection control unit 18 projects the image from the projector 3 toward the standard position with the standard scale.

If the number of consecutive determinations has not reached the reference number of times nth, it is determined as No in S213. If the determination in S213 is No, in S214 the projection control unit 18 determines whether or not n is an odd number. If n is an odd number, it is determined as Yes in S214. If it is determined as Yes in S214, the projection control unit 18 changes the position of the image projected from the projector 3 (S206). The process shown in S206 of FIG. 7 is the same as the process shown in S106 of FIG. Then, at S215, 1 is added to the current value of n. The processing from S202 to S205 that is performed immediately after the determination of Yes in S214 is the same as the processing shown in S107 and S108 in FIG.

If n is an even number when it is determined as No in S213, it is determined as No in S214. If determined as No in S214, the projection control unit 18 changes the scale of the image projected from the projector 3 (S209). The process shown in S209 of FIG. 7 is the same as the process shown in S109 of FIG. Then, at S215, 1 is added to the current value of n. The processing from S202 to S205 performed immediately after the determination of No in S214 is the same as the processing shown in S110 and S111 in FIG.

Note that, in the example shown in FIG. 7, the process shown in S209 may be performed when it is determined as Yes in S214. In such a case, if the determination in S214 is No, the process shown in S206 is performed.

In the example shown in FIG. 7, in S213, it may be determined whether or not a specific period of time has elapsed after setting n=1. The time is preset. In such a case, if the time has passed, it is determined as Yes in S213. If the time has not passed, it is determined as No in S213.

In the example shown in FIG. 7, the adjustment process for projecting an image from the projector 3 in an easy-to-view manner can be limited until the number of consecutive determinations reaches the reference number of times nth. In the example shown in FIG. 7, it is possible to prevent the image from the projector 3 from continuously moving and being reduced.

As another example, the projection control unit 18 may change the content of the information providing image 10 projected from the projector 3 when the number of consecutive determinations reaches the reference number of times nth. For example, the projection control unit 18 may project from the projector 3 an information providing image 10 that prompts a standing person to move.

8 is a flowchart showing another operation example of the projection apparatus according to Embodiment 1. FIG. FIG. 8 shows an example in which the first condition is met when the number of consecutive determinations is N or less, and the second condition is met when the number of consecutive determinations is N+1 or more. The value of N is preset. In the example shown in FIG. 8, the reference number of times nth is preferably a value greater than N+1. FIG. 8 corresponds to an example in which the determination process shown in S214 in the example shown in FIG. 7 is changed to the determination process shown in S316.

Specifically, in the example shown in FIG. 8, if it is determined as No in S305, it is determined in S313 whether or not n is equal to or greater than the reference number of times nth. When the number of consecutive determinations reaches the reference number of times nth, a determination of Yes is made in S313. If it is determined as Yes in S313, n is reset to 1. If S313 determines Yes, the projection control unit 18 projects the image from the projector 3 toward the standard position with the standard scale.

If the number of consecutive determinations has not reached the reference number of times nth, it is determined as No in S313. If the determination in S313 is No, in S316 the projection control unit 18 determines whether or not the value of n is N or less. As described above, n represents the number of consecutive determinations. That is, if the number of consecutive determinations is N times or less, it is determined as Yes in S316. If it is determined as Yes in S316, the projection control unit 18 changes the position of the image projected from the projector 3 (S306).

On the other hand, if the number of consecutive determinations exceeds N times, it is determined as No in S316. If determined as No in S316, the projection control unit 18 changes the scale of the image projected from the projector 3 (S309).

In the example shown in FIG. 8, the processing shown in S309 may be performed when it is determined as Yes in S316. In such a case, if the determination in S316 is No, the process shown in S306 is performed.

The information providing image 10 shown in FIG. 3 includes a design showing an arrow. Therefore, it is not preferable that the projection position is too far from the standard position. For this reason, the area where the image from the projector 3 can be projected may be set in advance. In the following, this area is also referred to as a projectable area. In this case, the first condition is satisfied when the image projected from the projector 3 is within the projectable area even if the position of the image is changed. The second condition is satisfied when changing the position of the image projected from the projector 3 causes the image to be out of the projectable area. When projecting the image from the projector 3 onto the floor, the projectable area may be set according to the position of the wall.

For example, the projection target area is determined using the parameters used in the process of changing the position of the image. The projection target area is an area where the image will be projected when the position of the image is changed using the parameter. In such a case, processing is performed to determine whether or not the obtained projection target area fits within the projectable area. If the projection target area fits within the projectable area, the first condition is met. If the projection target area does not fit within the projectable area, the second condition is met.

The information providing image 10 shown in FIG. 3 includes characters. For this reason, if the projection scale becomes too small compared to the standard scale, the characters become unreadable. For this reason, whether the first condition is satisfied or the second condition is satisfied may be determined according to the content of the information providing image 10 projected from the projector 3 .

9 is a flowchart showing another operation example of the projection device according to Embodiment 1. FIG. FIG. 9 shows an example in which the first condition is satisfied when the information providing image 10 contains characters, and the second condition is satisfied when the information providing image 10 does not include characters. FIG. 9 corresponds to an example in which the determination process shown in S214 in the example shown in FIG. 7 is changed to the determination process shown in S417.

Specifically, in the example shown in FIG. 9, if the determination in S405 is No, it is determined in S413 whether or not n is equal to or greater than the reference number of times nth. When the number of consecutive determinations reaches the reference number of times nth, it is determined as Yes in S413. If determined as Yes in S413, n is reset to 1. Further, when the determination in S413 is Yes, the projection control unit 18 projects the image from the projector 3 toward the standard position with the standard scale.

If the number of consecutive determinations has not reached the reference number of times nth, it is determined as No in S413. If it is determined as No in S413, in S417, the projection control unit 18 determines whether or not the information providing image 10 includes characters. The determination processing in S417 is performed, for example, based on the result of analysis by the analysis unit 16. FIG. The analysis unit 16 analyzes the photographed data acquired by the acquisition unit 15 and detects characters included in the information providing video 10 . If characters are detected by the analysis of the photographed data by the analysis unit 16, a determination of Yes is made in S417. If it is determined as Yes in S417, the projection control unit 18 changes the position of the image projected from the projector 3 (S406).

On the other hand, if the character is not detected by the analysis of the photographed data by the analysis unit 16, it is determined as No in S417. If determined as No in S417, the projection control unit 18 changes the scale of the image projected from the projector 3 (S409).

In the example shown in FIG. 9, the processing shown in S409 may be performed when it is determined as Yes in S417. In such a case, if the determination in S417 is No, the process shown in S406 is performed.

As another example, the first condition may be satisfied when the information providing image 10 includes a picture symbol such as a pictogram or a specific pattern such as an icon. In such a case, the second condition is met when the pictorial symbol and pattern are not included in the information providing image 10 .

The projection device 1 may be built in a mobile robot. Only the projector 3 may be built into a movable robot. In such a case, the position of the image projected from the projector 3 may be changed by moving the robot.

FIG. 10 is a diagram showing an example of hardware resources of the computer 5. As shown in FIG. The computer 5 includes a processing circuit 20 including a processor 21 and a memory 22 as hardware resources. A plurality of processors 21 may be included in the processing circuit 20 . A plurality of memories 22 may be included in the processing circuitry 20 .

In the present embodiment, each part indicated by reference numerals 15 to 19 indicates the function of the computer 5. FIG. The function of each part indicated by reference numerals 15 to 19 can be realized by software written as a program, firmware, or a combination of software and firmware. The program is stored in memory 22 . Calculator 5 implements the functions of the units indicated by reference numerals 15 to 19 by executing programs stored in memory 22 by processor 21 .

The processor 21 is also called a CPU (Central Processing Unit), a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP. A semiconductor memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, or a DVD may be used as the memory 22 . Semiconductor memories that can be employed include RAM, ROM, flash memory, EPROM, EEPROM, and the like.

FIG. 11 is a diagram showing another example of hardware resources of the computer 5. As shown in FIG. In the example shown in FIG. 11, computer 5 comprises processing circuitry 20 including processor 21 , memory 22 and dedicated hardware 23 . FIG. 11 shows an example in which a part of the functions of the computer 5 are implemented by dedicated hardware 23 . All functions of the computer 5 may be realized by dedicated hardware 23 . Dedicated hardware 23 can be a single circuit, multiple circuits, programmed processors, parallel programmed processors, ASICs, FPGAs, or combinations thereof.

Hardware resources of the projector 3 are the same as those shown in FIG. 10 or 11 . The projector 3 has a processing circuit including a processor and a memory as hardware resources. The projector 3 implements each function described above by executing a program stored in the memory by the processor. The projector 3 may include, as hardware resources, a processing circuit including a processor, memory, and dedicated hardware. Part or all of the functions of the projector 3 may be implemented by dedicated hardware.

Hardware resources of the camera 4 are the same as those shown in FIG. 10 or 11 . The camera 4 includes a processing circuit including a processor and a memory as hardware resources. The camera 4 implements each function described above by executing a program stored in the memory by the processor. The imaging device 4 may include, as hardware resources, a processing circuit including a processor, memory, and dedicated hardware. Part or all of the functions of the camera 4 may be implemented by dedicated hardware.

1 Projector 2 Case 3 Projector 4 Camera 5 Calculator 6 Router 7 Projector 8 Speaker 9 Photographer 10 Information Providing Video 11 Identification Mark 12 Wireless Communication Unit 13 Tablet Terminal 15 Acquisition Unit 16 Analysis Unit 17 Judgment Unit 18 Projection Control Unit 19 Information Control Unit 20 Processing Circuit 21 Processor 22 Memory 23 Dedicated Hardware

A projection device according to the present disclosure includes a projector for projecting an image including an identification mark, a camera for capturing the image projected from the projector, and a normal display of the identification mark in the image captured by the camera. determination means for determining whether or not the identification mark is displayed normally, and if the determination means determines that the identification mark is not normally displayed, the position of the image projected from the projector is changed if a specific first condition is satisfied. and projection control means for changing the scale of the image projected from the projector if a specific second condition is satisfied. If the number of consecutive determinations made by the determination means that the identification mark is not normally displayed is an odd number, one of the first condition and the second condition is satisfied, and if the number of times is an even number, the first condition or the second condition The other of the conditions holds.
A projection device according to the present disclosure includes a projector for projecting an image including an identification mark, a camera for capturing the image projected from the projector, and a normal display of the identification mark in the image captured by the camera. determination means for determining whether or not the identification mark is displayed normally, and if the determination means determines that the identification mark is not normally displayed, the position of the image projected from the projector is changed if a specific first condition is satisfied. and projection control means for changing the scale of the image projected from the projector if a specific second condition is satisfied. If the number of consecutive determinations made by the determining means that the identification mark is not normally displayed is equal to or less than a preset value, one of the first condition and the second condition is satisfied, and if the number of times exceeds the value, the second condition is satisfied. The other of condition 1 or condition 2 is met.
A projection device according to the present disclosure includes a projector for projecting an image including an identification mark, a camera for capturing the image projected from the projector, and a normal display of the identification mark in the image captured by the camera. determination means for determining whether or not the identification mark is displayed normally, and if the determination means determines that the identification mark is not normally displayed, the position of the image projected from the projector is changed if a specific first condition is satisfied. and projection control means for changing the scale of the image projected from the projector if a specific second condition is satisfied. An image projected from the projector includes an information providing image including characters. The first condition is satisfied when characters are detected in the image captured by the camera. The second condition is satisfied if no characters are detected in the image captured by the camera.
A projection device according to the present disclosure includes a projector for projecting an image including an identification mark, a camera for capturing the image projected from the projector, and a normal display of the identification mark in the image captured by the camera. determination means for determining whether or not the identification mark is displayed normally, and if the determination means determines that the identification mark is not normally displayed, the position of the image projected from the projector is changed if a specific first condition is satisfied. and projection control means for changing the scale of the image projected from the projector if a specific second condition is satisfied. The determination means determines again whether or not the identification mark is normally displayed when the position of the image projected from the projector or the scale of the image is changed by the projection control means. The projection control means projects an image from the projector at a specific standard scale toward a specific standard position unless the decision means determines that the identification mark is not displayed normally. The projection control means projects an image from the projector at a standard scale toward a standard position when the determination means continuously determines that the identification mark is not displayed normally a specific number of times.
A projection device according to the present disclosure includes a projector for projecting an image including an identification mark, a camera for capturing the image projected from the projector, and a normal display of the identification mark in the image captured by the camera. determination means for determining whether or not the identification mark is displayed normally, and if the determination means determines that the identification mark is not normally displayed, the position of the image projected from the projector is changed if a specific first condition is satisfied. and projection control means for changing the scale of the image projected from the projector if a specific second condition is satisfied. The determination means determines again whether or not the identification mark is normally displayed when the position of the image projected from the projector or the scale of the image is changed by the projection control means. An image projected from the projector includes an information providing image. The projection control means changes the contents of the information providing image projected from the projector when the number of times the determination means continuously determines that the identification mark is not displayed normally reaches a specific number.
A projection device according to the present disclosure includes a projector for projecting an image including an identification mark, a camera for capturing the image projected from the projector, and a normal display of the identification mark in the image captured by the camera. determination means for determining whether or not the identification mark is displayed normally, and if the determination means determines that the identification mark is not normally displayed, the position of the image projected from the projector is changed if a specific first condition is satisfied. and projection control means for changing the scale of an image projected from the projector when a specific second condition is established, a case for supporting the projector, and notification control means for controlling the annunciator. The image from the projector is projected onto the same plane on which the case rests. The notification control means provides a specific notification from the annunciator when the projection control means changes the position of the image projected from the projector and changes the scale of the image projected from the projector.

A projection method according to the present disclosure includes a projecting step of projecting an image including an identification mark from a projector, a photographing step of photographing the image projected from the projector by a photographing device, and an identification mark in the image photographed by the photographing device. is normally displayed, and if it is determined in the determination step that the identification mark is not normally displayed, the image projected from the projector if a specific first condition is satisfied. and changing the scale of the image projected from the projector if a specific second condition is met. If the number of consecutive determinations in the determination step that the identification mark is not normally displayed is an odd number, one of the first condition or the second condition is satisfied; if the number of times is an even number, the first condition or the second condition The other of the conditions holds.
A projection method according to the present disclosure includes a projecting step of projecting an image including an identification mark from a projector, a photographing step of photographing the image projected from the projector by a photographing device, and an identification mark in the image photographed by the photographing device. is normally displayed, and if it is determined in the determination step that the identification mark is not normally displayed, the image projected from the projector if a specific first condition is satisfied. and changing the scale of the image projected from the projector if a specific second condition is met. If the number of consecutive determinations in the determination step that the identification mark is not normally displayed is equal to or less than a preset value, one of the first condition and the second condition is satisfied. The other of condition 1 or condition 2 is met.
A projection method according to the present disclosure includes a projection step of projecting an image including an information providing image including identification marks and characters from a projector, a photographing step of photographing the image projected from the projector with a photographing device, and a photographing step of photographing the image projected from the projector. and if it is determined in the determination step that the identification mark is not normally displayed, a specific first condition is satisfied. and a projection control step of changing the position of the image projected from the projector and changing the scale of the image projected from the projector if a specific second condition is satisfied. The first condition is satisfied when characters are detected in the image captured by the camera. The second condition is satisfied if no characters are detected in the image captured by the camera.
A projection method according to the present disclosure includes a projecting step of projecting an image including an identification mark from a projector, a photographing step of photographing the image projected from the projector by a photographing device, and an identification mark in the image photographed by the photographing device. is normally displayed, and if it is determined in the determination step that the identification mark is not normally displayed, the image projected from the projector if a specific first condition is satisfied. and changing the scale of the image projected from the projector if a specific second condition is met. If the position of the image projected from the projector or the scale of the image is changed in the projection control step, the determining step is performed again. If the determination step does not determine that the identification mark is not displayed normally, the projection control step projects an image from the projector toward a particular standard position and at a particular standard scale. When the determination step reaches a specific number of times in succession that the identification mark is not displayed normally, the projection control step projects an image from the projector at a standard scale toward a standard position.
A projection method according to the present disclosure includes a projection step of projecting an image including an identification mark and an information providing image from a projector, a photographing step of photographing the image projected from the projector with a photographing device, and a determination step of determining whether or not the identification mark is normally displayed in the image; and if it is determined in the determination step that the identification mark is not normally displayed, the projector will and a projection control step of changing the position of the projected image and changing the scale of the image projected from the projector if a particular second condition is met. If the position of the image projected from the projector or the scale of the image is changed in the projection control step, the determining step is performed again. When the determination step reaches a specific number of times in succession that the identification mark is not displayed normally, the projection control step changes the content of the information providing image projected from the projector.
A projection method according to the present disclosure includes a projecting step of projecting an image including an identification mark from a projector, a photographing step of photographing the image projected from the projector by a photographing device, and an identification mark in the image photographed by the photographing device. is normally displayed, and if it is determined in the determination step that the identification mark is not normally displayed, the image projected from the projector if a specific first condition is satisfied. and changing the scale of the image projected from the projector if a specific second condition is satisfied; and when changing the position of the image projected from the projector in the projection control step and a notification control step of performing a specific notification from an annunciator when the scale of the image projected from the projector is changed. The image from the projector is projected onto the same plane as the case supporting the projector is placed.

A program according to the present disclosure is stored in a computer capable of communicating with a projector for projecting an image including an identification mark and a camera for capturing an image projected from the projector, and the image captured by the camera has an identification mark. Determination processing for determining whether or not the identification mark is displayed normally; and a projection control process for changing the position and changing the scale of the image projected from the projector if a specific second condition is satisfied. If the number of consecutive determinations in the determination process that the identification mark is not normally displayed is an odd number, one of the first condition and the second condition is satisfied. The other of the conditions holds.
A program according to the present disclosure is stored in a computer capable of communicating with a projector for projecting an image including an identification mark and a camera for capturing an image projected from the projector, and the image captured by the camera has an identification mark. Determination processing for determining whether or not the identification mark is displayed normally; and a projection control process for changing the position and changing the scale of the image projected from the projector if a specific second condition is satisfied. If the number of consecutive determinations in the determination process that the identification mark is not displayed normally is equal to or less than a preset value, one of the first condition and the second condition is satisfied. The other of condition 1 or condition 2 is met.
A program according to the present disclosure is transmitted by a camera to a computer capable of communicating with a projector for projecting an image including an information providing image including identification marks and characters and a camera for capturing the image projected from the projector. Determination processing for determining whether or not the identification mark is normally displayed in the photographed image; a projection control process for changing the position of the image projected from the projector and changing the scale of the image projected from the projector if a specific second condition is satisfied. The first condition is satisfied when characters are detected in the image captured by the camera. The second condition is satisfied if no characters are detected in the image captured by the camera.
A program according to the present disclosure is stored in a computer capable of communicating with a projector for projecting an image including an identification mark and a camera for capturing an image projected from the projector, and the image captured by the camera has an identification mark. Determination processing for determining whether or not the identification mark is displayed normally; and a projection control process for changing the position and changing the scale of the image projected from the projector if a specific second condition is satisfied. If the position of the image projected from the projector or the scale of the image is changed in the projection control process, the determination process is performed again. If the determination process does not determine that the identification mark is displayed normally, the projection control process projects an image from the projector toward a specific standard position with a specific standard scale. When the number of consecutive determinations that the identification mark is not displayed reaches a specific number in the determination process, the projection control process projects an image from the projector toward the standard position at the standard scale.
A program according to the present disclosure is a computer capable of communicating with a projector for projecting an image including an identification mark and an information providing video and a camera for capturing an image projected from the projector, and is captured by the camera. Determination processing for determining whether or not the identification mark is normally displayed in the image; and a projection control process for changing the position of the projected image and changing the scale of the image projected from the projector if a specific second condition is satisfied. If the position of the image projected from the projector or the scale of the image is changed in the projection control process, the determination process is performed again. When the number of consecutive determinations in the determination process that the identification mark is not displayed normally reaches a specific number, the content of the information providing image projected from the projector is changed in the projection control process.
A program according to the present disclosure communicates with a projector for projecting an image including an identification mark on the same surface as the surface on which the case is placed and supported by the case, and a camera for capturing the image projected from the projector. determination processing for determining whether or not the identification mark is normally displayed in the image photographed by the camera, and if it is determined in the determination processing that the identification mark is not normally displayed, a specified projection control processing for changing the position of the image projected by the projector if the first condition of is satisfied, and changing the scale of the image projected by the projector if the second condition is satisfied; a notification control process for performing a specific notification from the annunciator when the position of the image projected from the projector is changed and when the scale of the image projected from the projector is changed in .

With the projection device according to the present disclosure, it is possible to reduce the load required for processing for projecting images in an easy-to-view manner.

Claims (11)

a projector for projecting an image containing the identification mark;
a camera for capturing an image projected from the projector;
determination means for determining whether or not the identification mark is normally displayed in the image captured by the camera;
When the determining means determines that the identification mark is not displayed normally, if a specific first condition is satisfied, the position of the image projected from the projector is changed, and a specific second condition is satisfied. projection control means for changing the scale of an image projected from said projector if
A projection device with When the identification mark cannot be identified in the image photographed by the photographing device, or when the position of the identification mark in the image photographed by the photographing device deviates from a pre-registered position, 2. The projection device according to claim 1, wherein it is determined that the identification mark is not displayed normally. The determination means determines again whether the identification mark is normally displayed when the position of the image projected from the projector or the scale of the image is changed by the projection control means,
3. The determination device according to claim 1, wherein whether the first condition is satisfied and whether the second condition is satisfied is determined according to the number of consecutive determinations by the determination means that the identification mark is not displayed normally. projection device. The image projected from the projector includes an information providing image,
3. The projection device according to claim 1, wherein whether the first condition is satisfied and whether the second condition is satisfied is determined according to the content of the information providing image projected from the projector. Projectable area is set in advance,
the first condition is satisfied when the image projected from the projector is within the projectable area even if the position of the image is changed;
3. The projection apparatus according to claim 1, wherein the second condition is satisfied when the position of the image projected from the projector is changed so that the image does not fit in the projectable area. The determination means determines again whether the identification mark is normally displayed when the position of the image projected from the projector or the scale of the image is changed by the projection control means,
The projection control means is
if the determination means determines that the identification mark is not displayed normally, projecting an image from the projector at a specific standard scale toward a specific standard position;
3. An image is projected from said projector toward said standard position at said standard scale when the number of times said determining means continuously determines that said identification mark is not displayed normally reaches a specific number of times. 6. A projection device according to any one of claims 1-5. The determination means determines again whether the identification mark is normally displayed when the position of the image projected from the projector or the scale of the image is changed by the projection control means,
The image projected from the projector includes an information providing image,
The projection control means changes the content of the information providing image projected from the projector when the number of times the determination means continuously determines that the identification mark is not displayed normally reaches a specific number of times. 6. A projection device according to any one of claims 1 to 5. a case that supports the projector;
Notification control means for controlling the alarm;
further comprising
the image from the projector is projected onto the same plane on which the case is placed;
Said notification control means makes a specific notification from said notification device when said projection control means changes the position of the image projected from said projector and changes the scale of the image projected from said projector. 8. A projection device according to any one of claims 1-7. a projector for projecting an image containing the identification mark;
a camera for capturing an image projected from the projector;
determination means for determining whether or not the identification mark is normally displayed in the image captured by the camera;
projection control means for changing the position of the image projected from the projector when the determination means determines that the identification mark is not displayed normally;
A projection device with a projecting step of projecting an image containing the identification mark from a projector;
a photographing step of photographing an image projected from the projector with a photographing device;
a determination step of determining whether the identification mark is normally displayed in the image captured by the camera;
When it is determined in the determination step that the identification mark is not displayed normally, if a specific first condition is satisfied, the position of the image projected from the projector is changed, and a specific second condition is satisfied. a projection control step of changing the scale of the image projected from the projector if
A projection method with A computer capable of communicating with a projector for projecting an image containing an identification mark and a camera for capturing the image projected from the projector,
a determination process for determining whether or not the identification mark is normally displayed in the image captured by the camera;
When it is determined in the determination process that the identification mark is not normally displayed, if a specific first condition is satisfied, the position of the image projected from the projector is changed, and a specific second condition is satisfied. a projection control process for changing the scale of an image projected from the projector if
program to run the

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