JP2018185414A - Projector and projector control method - Google Patents

Abstract

A technique is provided that allows a viewer to change one of the images displayed on each of a plurality of objects as a projection image. A projector includes a generation unit that generates a projection image by synthesizing a first image and a second image, and a projection unit that projects the projection image onto a projection area including a first projection target and a second projection target. and a detector that detects the position of the first projection target and the position of the second projection target. The generator generates a projection image such that the first image is projected at the position of the first projection target and the second image is projected at the position of the second projection target. The first image is a selection image for selecting images. The second image is the image selected using the selection image. [Selection drawing] Fig. 3

Description

  The present invention relates to a projector and a projector control method.

  Patent Document 1 describes a projector that generates a projection image by synthesizing an image associated with each of a plurality of objects in advance. The projector described in Patent Document 1 projects and displays an image previously associated with each of a plurality of objects by projecting the generated projection image.

JP 2016-123079 A

  The projector described in Patent Document 1 projects and displays an image associated with each of the plurality of objects in advance. For this reason, the person who sees the projection image containing these images cannot change the image projected on a certain object.

  The present invention has been made in view of the circumstances described above, and it is a solution to provide a technique that allows a person who views the image to change any one of images displayed on each of a plurality of objects as a projection image. To do.

In one aspect of the projector according to the present invention, the projection image is generated in a projection area including a generation unit that generates a projection image by combining the first image and the second image, and a first projection target and a second projection target. A projection unit that projects, and a detection unit that detects a position of the first projection target and a position of the second projection target, and the generation unit includes the first image at the position of the first projection target. The projection image is generated so that the second image is projected and projected to the position of the second projection target, the first image is a selection image for selecting an image, and the second image is It is an image selected using the selected image.
According to this aspect, the person viewing the projection image selects and changes the second image projected on the second projection target using the selection screen (first image) projected on the first projection target. Is possible. It is also possible to provide a relationship between the first image and the second image.

In one aspect of the projector described above, the detection unit also detects the size of the second projection target, and the generation unit adjusts the size of the second image according to the size of the second projection target. It is desirable to do.
According to this aspect, it is possible to change the size of the second image according to the size of the second projection target.

In one aspect of the projector described above, it is preferable that the generation unit adjusts the size of the second image by performing a trimming process on the second image.
According to this aspect, since the size of the second image is adjusted by performing the trimming process on the second image, the second image is compared with the case where the size of the second image is adjusted by enlargement or reduction of the second image. It becomes possible to suppress a change in the size of the object indicated by the two images.

In one aspect of the projector described above, it is preferable that the selection image is an image for selecting one image from a plurality of images.
According to this aspect, the second image can be selected from a plurality of images.

One aspect of the projector control method according to the present invention includes: a step of generating a projection image by combining the first image and the second image; and a projection area including the first projection target and the second projection target. A step of projecting a projection image; and a step of detecting a position of the first projection target and a position of the second projection target. In the step of generating the projection image, the position of the first projection target is The projection image is generated so that the first image is projected and the second image is projected to the position of the second projection target, and the first image is a selection image for selecting an image, The second image is an image selected using the selected image.
According to this aspect, the person who views the projection image changes the second image projected on the second projection target by selecting the second image projected on the first projection target using the selection screen (first image). It becomes possible. It is also possible to provide a relationship between the first image and the second image.

1 is a diagram illustrating a projector 100 according to a first embodiment. 5 is a diagram showing an example of a projected image 400. FIG. 1 is a diagram illustrating a schematic configuration of a projector 100. FIG. 5 is a diagram showing an example of a first menu image 501. FIG. It is the figure which showed an example of the Japanese food menu image 502a. It is the figure which showed an example of the Chinese menu image 502b. It is the figure which showed an example of the Italian menu image 502c. It is the figure which showed an example of the cooking image. FIG. 4 is a diagram illustrating an example of a projection unit 4. FIG. 6 is a diagram illustrating an example of a sensor 5. It is a figure for demonstrating the distance information for every infrared light receiving element 52a. 4 is a flowchart for explaining the operation of the projector 100.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the size and scale of each part are appropriately different from the actual ones. The embodiments described below are preferred specific examples of the present invention. For this reason, the technically preferable various restrictions are attached | subjected to this embodiment. However, the scope of the present invention is not limited to these forms unless otherwise specified in the following description.

<First Embodiment>
FIG. 1 is a diagram illustrating a projector 100 according to the first embodiment. FIG. 1 shows an example in which the projector 100 is used in a restaurant. The projector 100 may be used outside a restaurant.

  The projector 100 is fixed to the ceiling or wall of the restaurant by a support device (not shown). The projector 100 projects and displays the projection image 400 on the projection area 300 set in the restaurant table 200. In the projection area 300, a menu display 301 for displaying a restaurant menu (hereinafter simply referred to as “menu”) and a plate 302 are arranged. The dish 302 may be selected by a restaurant customer. The menu display body 301 is an example of a first projection target. The dish 302 is an example of a second projection target. In the present embodiment, the height of the menu display body 301 is different from the height of the dish 302.

  FIG. 2 is a diagram illustrating an example of the projection image 400. The projected image 400 includes a first area 401 projected onto the menu display 301 and a second area 402 projected onto the dish 302. The projector 100 arranges a menu image 500 representing a menu in the first area 401. Further, the projector 100 arranges the dish image 600 representing the dish selected from the menu image 500 in the second area 402. Menu image 500 is an example of a selection image and a first image for selecting an image. The dish image 600 is an example of an image selected using the menu image 500 and a second image.

  The projector 100 projects the projection image 400 onto the projection area 300 so that the menu image 500 is projected onto the menu display body 301 and the dish image 600 is projected onto the plate 302.

  FIG. 3 is a diagram illustrating a schematic configuration of the projector 100. The projector 100 includes a reception unit 1, a storage unit 2, a processing unit 3, a projection unit 4, and a sensor 5. The projector 100 is controlled by a remote controller 101, for example.

  The remote controller 101 includes various operation buttons, operation keys, a touch panel, and the like that receive input from a user (for example, a restaurant customer). The remote controller 101 transmits information corresponding to the user input. The receiving unit 1 receives information transmitted from the remote controller 101.

  The storage unit 2 is a computer-readable recording medium. The storage unit 2 includes a program storage unit 21, an image information storage unit 22, and a projection target storage unit 23. The program storage unit 21, the image information storage unit 22, and the projection target storage unit 23 may be separate from each other.

  The program storage unit 21 stores a program that defines the operation of the projector 100.

The image information storage unit 22 stores various image information (for example, menu image information indicating the menu image 500 and dish image information indicating the dish image 600).
The image information storage unit 22 includes, as menu image information, first menu image information indicating a first menu image 501 (see FIG. 4) and a second menu image 502 (see FIGS. 5, 6, and 7). 2 menu image information is stored.

FIG. 4 is a diagram illustrating an example of the first menu image 501.
The first menu image 501 is used to select a genre of cooking (Japanese food, Chinese, Italian). The genre of food that can be selected in the first menu image 501 is not limited to Japanese food, Chinese, and Italian, and can be changed as appropriate. The first menu image 501 is arranged as the menu image 500 in the first area 401 of the projection image 400.

  The second menu image 502 is used to select a dish image (cooking image) projected on the plate 302 from dishes belonging to the genre selected in the first menu image 501. The second menu image 502 is arranged in place of the first menu image 501 in the first area 401 when a food genre is selected in the first menu image 501.

  In the present embodiment, as the second menu image 502, a menu image 502a corresponding to Japanese food, a menu image 502b corresponding to Chinese, and a menu image 502c corresponding to Italian are used. Hereinafter, the menu image 502a corresponding to Japanese food is referred to as “Japanese food menu image 502a”, the menu image 502b corresponding to Chinese is referred to as “Chinese menu image 502b”, and the menu image 502c corresponding to Italian is “Italian menu image 502c”. Called. The second menu image 502 is not limited to the Japanese menu image 502a, the Chinese menu image 502b, and the Italian menu image 502c, and can be changed as appropriate.

  The image information storage unit 22 includes Japanese menu image information indicating the Japanese menu image 502a, Chinese menu image information indicating the Chinese menu image 502b, and Italian menu image information indicating the Italian menu image 502c, respectively. Store as information.

  FIG. 5 is a diagram showing an example of the Japanese food menu image 502a. The Japanese menu image 502a represents the names of dishes belonging to the genre of Japanese food (sushi, tempura). The name of the dish represented by the Japanese food menu image 502a is not limited to sushi and tempura and can be changed as appropriate.

  FIG. 6 is a diagram showing an example of the Chinese menu image 502b. The Chinese menu image 502b represents the names of the dishes belonging to the Chinese genre (shrimp chilli, fried rice, dumplings). The name of the dish represented by the Chinese menu image 502b is not limited to shrimp chilli, fried rice, and dumplings, and can be changed as appropriate.

  FIG. 7 is a diagram showing an example of the Italian menu image 502c. The Italian menu image 502c represents the names of dishes belonging to the Italian genre.

  FIG. 8 is a diagram illustrating an example of a dish image 600 (a dish image representing dumplings). The image information storage unit 22 includes image information about each dish represented by the Japanese menu image 502a, image information about each dish represented by the Chinese menu image 502b, and image information about each dish represented by the Italian menu image 502c. Each is stored as dish image information.

Returning to FIG. 3, the projection target storage unit 23 stores information related to the projection target. Specifically, the projection target storage unit 23 stores menu display body information related to the menu display body 301 that is the first projection target and dish information related to the dish 302 that is the second projection target.
As the menu display body information, information indicating the distance from the sensor 5 to the menu display body 301 (information indicating the distance to the menu display body 301 measured by the sensor 5) is used. As the dish information, information indicating the distance from the sensor 5 to the dish 302 (information indicating the distance to the dish 302 measured by the sensor 5) is used.

  The processing unit 3 is a computer such as a CPU (Central Processing Unit). The processing unit 3 implements the generation unit 31 and the projection target detection unit 32 by reading and executing the program stored in the program storage unit 21. The generation unit 31 and the projection target detection unit 32 may be realized by one CPU (or semiconductor chip), or the generation unit 31 and the projection target detection unit 32 are realized by a plurality of CPUs (or semiconductor chips). May be.

The generation unit 31 combines the menu image 500 and the dish image 600 to generate a projection image 400 (see FIG. 2). The generation unit 31 projects the menu image 500 (any one of the first menu image 501, the Japanese food menu image 502 a, the Chinese menu image 502 b, and the Italian menu image 502 c) at the position of the menu display body 301, and The projection image 400 is generated so that the dish image 600 is projected.
Specifically, the generation unit 31 arranges the menu image 500 in the first area 401 and arranges the dish image 600 in the second area 402 to generate the projection image 400. The generation unit 31 also generates the projection image 400 by arranging the menu image 500 in the first area 401 without arranging the dish image 600 in the second area 402.
The generation unit 31 generates an image signal indicating the projection image 400 and outputs the image signal to the projection unit 4.

  The projection unit 4 receives the image signal from the generation unit 31, and projects and displays the projection image 400 on the projection region 300 according to the image signal. The projection unit 4 projects the projection image 400 onto the projection area 300 so that the menu image 500 is projected onto the position of the menu display body 301 and the dish image 600 is projected onto the position of the plate 302.

  FIG. 9 is a diagram illustrating an example of the projection unit 4. The projection unit 4 includes a light source 11, three liquid crystal light valves 12 (12R, 12G, and 12B) that are examples of a light modulation device, a projection lens 13 that is an example of a projection optical system, a light valve driving unit 14, and the like. Including. The projection unit 4 modulates the light emitted from the light source 11 with the liquid crystal light valve 12 to form a projection image (image light), and enlarges and projects this projection image from the projection lens 13.

  The light source 11 includes a light source unit 11a composed of a xenon lamp, an ultra-high pressure mercury lamp, an LED (Light Emitting Diode), a laser light source, or the like, and a reflector 11b that reduces variations in the direction of light emitted from the light source unit 11a. The light emitted from the light source 11 is reduced in variation in luminance distribution by an integrator optical system (not shown), and then red (R), green (G), which are the three primary colors of light by a color separation optical system (not shown), It is separated into blue (B) color light components. The color light components of R, G, and B are incident on the liquid crystal light valves 12R, 12G, and 12B, respectively.

  The liquid crystal light valve 12 is configured by a liquid crystal panel in which liquid crystal is sealed between a pair of transparent substrates. The liquid crystal light valve 12 is formed with a rectangular pixel region 12a composed of a plurality of pixels 12p arranged in a matrix. In the liquid crystal light valve 12, it is possible to apply a driving voltage to the liquid crystal for each pixel 12p. When the light valve driving unit 14 applies a driving voltage corresponding to the image signal input from the generating unit 31 to each pixel 12p, each pixel 12p is set to a light transmittance corresponding to the image signal. For this reason, the light emitted from the light source 11 is modulated by transmitting through the pixel region 12a, and an image corresponding to the image signal is formed for each color light.

  The images of the respective colors are synthesized for each pixel 12p by a color synthesis optical system (not shown), and projection image light (projection image) that is color image light (color image) is generated. The projected image light is enlarged and projected onto the projection area 300 by the projection lens 13.

  Returning to FIG. 3, the projection target detection unit 32 is an example of a detection unit. The projection target detection unit 32 detects the position and size of the menu display body 301 and the position and size of the dish 302. In the present embodiment, the projection target detection unit 32 detects the position and size of the menu display body 301 and the position and size of the dish 302 based on the output of the sensor 5.

  The sensor 5 is, for example, a TOF (Time of Flight) type distance image sensor. The sensor 5 measures a distance to an object (projection target) existing in the projection area 300.

FIG. 10 is a diagram illustrating an example of the sensor 5.
The sensor 5 includes an infrared light source unit 51, an infrared light receiving unit 52, a sensor control unit 53, and a memory 54.

  The infrared light source unit 51 irradiates the projection area 300 with infrared detection light so that the infrared detection light is diffused throughout the projection area 300.

The infrared light receiving unit 52 receives infrared detection light (hereinafter also referred to as “reflected light”) reflected by the projection region 300. The infrared light receiving unit 52 includes a plurality of infrared light receiving elements 52a (see FIG. 11) arranged in a matrix, and each of the plurality of infrared light receiving elements 52a receives reflected light. For this reason, the infrared image of the projection area | region 300 is comprised by the output of the some infrared light receiving element 52a.
The positions of the plurality of infrared light receiving elements 52a arranged in a matrix are associated with the positions of the plurality of pixels 12p arranged in a matrix on the liquid crystal light valve 12 (see FIG. 9). Coordinate conversion data indicating this correspondence is stored in the storage unit 2. The coordinate conversion data is generated when the projector 100 executes a known calibration process.

  The sensor control unit 53 controls the infrared light source unit 51 and the infrared light receiving unit 52. The sensor control unit 53 stores the phase of the infrared detection light emitted by the infrared light source unit 51 in the memory 54. Further, the sensor control unit 53 stores the phase of the reflected light received by each infrared light receiving element 52 a in the memory 54. The sensor control unit 53 also reads from the memory 54 the phase of the infrared detection light emitted by the infrared light source unit 51 and the phase of the reflected light received by each infrared light receiving element 52a.

The sensor control unit 53 calculates, for each infrared light receiving element 52a, the difference between the phase of the infrared detection light emitted by the infrared light source unit 51 and the phase of the reflected light received by the infrared light receiving element 52a. Based on the calculation result, the sensor control unit 53 measures, for each infrared light receiving element 52a, the distance to the portion of the projection area 300 that reflects the infrared light received by the infrared light receiving element 52a.
The sensor control unit 53 generates distance information for each infrared light receiving element 52a based on these measurement results.

FIG. 11 is a diagram for explaining distance information for each infrared light receiving element 52a.
In the distance information for each infrared light receiving element 52a, for each of the plurality of infrared light receiving elements 52a arranged in a matrix, the horizontal position is used as the X-axis value (X coordinate), and the vertical position is It is used as the Y-axis value (Y coordinate). In each of the plurality of infrared light receiving elements 52a, the measured distance is used as a Z-axis value (Z coordinate). For this reason, distance information for each infrared light receiving element 52a is indicated by three-axis coordinates (X, Y, Z) of XYZ.

  The projection target detection unit 32 detects the menu display body 301 and the dish 302 using the distance information for each infrared light receiving element 52a and the menu display body information and dish information stored in the projection target storage unit 23. .

For example, the projection target detection unit 32 first calculates distance information having a Z coordinate value (distance) equal to the distance indicated by the menu display body information from the distance information for each infrared light receiving element 52a. Identify as information. Subsequently, the projection target detection unit 32 detects the position and size of the menu display body 301 using the value of the XY coordinates of the first corresponding distance information.
Moreover, the projection target detection unit 32 specifies distance information having a Z coordinate value (distance) equal to the distance indicated by the dish information, as the second corresponding distance information, from the distance information for each infrared light receiving element 52a. . Subsequently, the projection target detection unit 32 detects the position and size of the dish 302 using the XY coordinate values of the second corresponding distance information.

  The generation unit 31 uses the detection result of the position and size of the menu display body 301 detected by the projection target detection unit 32 and the coordinate conversion data stored in the storage unit 2 to position the first region 401. And determine the size. In addition, the generation unit 31 uses the detection result of the position and size of the dish 302 detected by the projection target detection unit 32 and the coordinate conversion data stored in the storage unit 2 to position the second region 402. And determine the size. In the present embodiment, the generation unit 31 determines a rectangular area that fits in the dish 302 as the second area 402.

Next, the operation will be described. FIG. 12 is a flowchart for explaining the operation of the projector 100.
For example, when a restaurant customer arrives at the table 200 on which the menu display body 301 and the dish 302 are arranged, the restaurant clerk operates the remote controller 101 and inputs a display start instruction to the remote controller 101. Note that the dish 302 may be placed on the table 200 after being selected by a restaurant customer before a display start instruction is input. Upon receiving the display start instruction, the remote controller 101 transmits a display start instruction to the receiving unit 1. When receiving the display start instruction, the reception unit 1 outputs the display start instruction to the generation unit 31.

  Upon receiving the display start instruction, the generation unit 31 outputs an operation instruction to the sensor 5. Upon receiving the operation instruction, the sensor 5 measures the distance to the projection area 300 and outputs distance information (see FIG. 11) for each infrared light receiving element 52a to the projection target detection unit 32.

  When receiving the distance information for each infrared light receiving element 52a, the projection target detection unit 32 reads the menu display body information and the dish information from the projection target storage unit 23. Subsequently, the projection target detection unit 32 uses the distance information for each infrared light receiving element 52a, the menu display body information, and the dish information, and the position and size of the menu display body 301 and the position and size of the dish 302. , Is detected (step S1). Subsequently, the projection target detection unit 32 outputs the position and size of the menu display body 301 and the position and size of the dish 302 to the generation unit 31.

  Upon receiving the position and size of the menu display body 301, the generation unit 31 determines the first region 401 using the position and size of the menu display body 301 and the coordinate conversion data stored in the storage unit 2. To do. In addition, when the generation unit 31 receives the position and size of the plate 302, the generation unit 31 determines the second region 402 using the position and size of the plate 302 and the coordinate conversion data stored in the storage unit 2 ( Step S2).

  Subsequently, the generation unit 31 reads the first menu image information from the image information storage unit 22. Subsequently, the generation unit 31 generates the projection image 400 by arranging the first menu image 501 in the first area 401 using the first menu image information without arranging the dish image 600 in the second area 402. (Step S3). The projection image 400 generated in step S3 is also referred to as a “genre selection projection image”. In the genre selection projection image, the second area 402 is blank.

  Subsequently, the generation unit 31 generates an image signal indicating the genre selection projection image and outputs the image signal to the projection unit 4, and the projection unit 4 projects the genre selection projection image according to the image signal. Projecting to the area 300 (step S4). At this time, the first menu image 501 (see FIG. 4) is projected on the menu display body 301.

  A customer of the restaurant operates the remote controller 101 while selecting the first menu image 501 projected on the menu display body 301 and selects a genre of cuisine (Japanese, Chinese or Italian). Upon receiving the genre selection result, the remote controller 101 transmits the genre selection result to the receiving unit 1. When receiving the genre selection result (step S5), the reception unit 1 outputs the genre selection result to the generation unit 31.

  Upon receiving the genre selection result, the generation unit 31 reads the second menu image 502 corresponding to the genre selection result from the image information storage unit 22. For example, when the genre selection result indicates Japanese food, the generation unit 31 reads Japanese food menu image information from the image information storage unit 22. When the genre selection result indicates Chinese, the generation unit 31 reads the Chinese menu image information from the image information storage unit 22. When the genre selection result indicates Italian, the generation unit 31 reads Italian menu image information from the image information storage unit 22. In the following, it is assumed that the Chinese menu image information is read from the image information storage unit 22 for the sake of simplification.

  Subsequently, the generating unit 31 generates the projection image 400 by arranging the Chinese menu image 502b in the first area 401 using the Chinese menu image information without arranging the dish image 600 in the second area 402 (Step S31). S6). The projection image 400 generated in step S6 is also referred to as a “dish selection projection image”. In the dish selection projection image, the second area 402 is blank as in the genre selection projection image.

  Subsequently, the generation unit 31 generates an image signal indicating the dish selection projection image, and outputs the image signal to the projection unit 4. The projection unit 4 projects the dish selection projection image according to the image signal. Projecting to the area 300 (step S7). At this time, the Chinese menu image 502b (see FIG. 6) is projected onto the menu display 301.

  A restaurant customer operates the remote controller 101 to select a dish while viewing the Chinese menu image 502b projected on the menu display 301. Upon receiving the dish selection result, the remote controller 101 transmits the dish selection result to the receiving unit 1. When receiving the dish selection result (step S8), the receiving unit 1 outputs the dish selection result to the generating unit 31.

  Upon receiving the dish selection result, the generation unit 31 reads the dish image 600 corresponding to the dish selection result from the image information storage unit 22. For example, when the dish selection result indicates dumplings, the generation unit 31 reads the dumpling dish image information from the image information storage unit 22. In the following, for simplification of explanation, it is assumed that cooking image information of dumplings is read from the image information storage unit 22.

  Subsequently, the generating unit 31 arranges the Chinese menu image 502b in the first area 401 and arranges the dumpling dish image 600 in the second area 402 to generate the projection image 400 (step S9). The projection image 400 generated in step S9 is also referred to as a “projection image-added projection image”.

  Subsequently, the generation unit 31 generates an image signal indicating a projection image with a cooking image, and outputs the image signal to the projection unit 4. The projection unit 4 projects a projection image with a cooking image according to the image signal. Projecting to the area 300 (step S10). At this time, the Chinese menu image 502b (see FIG. 6) is projected onto the menu display 301, and the dumpling dish image (see FIG. 8) is projected onto the plate 302.

  According to the projector 100 and the control method of the projector 100 according to the present embodiment, the restaurant customer selects the dish image 600 projected on the dish 302 by using the menu image 500 projected on the menu display body 301. It becomes possible to change. In addition, it is possible to provide a relationship between the menu image 500 and the dish image 600.

<Modification>
The present invention is not limited to the above-described embodiments, and various modifications as described below are possible, for example. Further, one or a plurality of modifications arbitrarily selected from the modifications described below can be appropriately combined.

<Modification 1>
The dish 302 may be selected from a plurality of dishes having different sizes. For example, three plates of “large”, “medium”, and “small” having different sizes are prepared. When a restaurant customer orders a large plate, the “large” plate is placed on the table 200 as a plate 302. The “medium” dish may be placed on the table 200 as the dish 302 when the serving is ordered, and the “small” dish may be placed on the table 200 as the dish 302 when a smaller order is ordered.
In this case, the generation unit 31 may adjust the size of the second area 402 according to the size of the dish 302 and adjust the size of the dish image 600 according to the size of the second area 402. For example, the generation unit 31 may enlarge the second region 402 and the dish image 600 as the dish 302 is larger.

  When the second region 402 and the dish image 600 are larger as the dish 302 is larger, a plurality of dish image information having different sizes may be stored in the image information storage unit 22 in advance.

In addition, when the dish image information corresponding to the largest dish among the plurality of dishes is stored in the image information storage unit 22 and a dish smaller than the largest dish is used, the generating unit 31 displays the dish image. The size of the dish image may be adjusted by performing a trimming process on the dish image indicated by the information.
When the size of the cooking image is adjusted by enlarging or reducing the cooking image, the size of the cooking shown in the cooking image (for example, the size of dumplings or the size of shrimp) changes. For this reason, the possibility that the difference between the size of the dish displayed on the plate 302 and the size of the actual dish will increase.
On the other hand, if the size of the dish image is adjusted by performing the trimming process on the dish image, the object indicated by the dish image is larger than the case where the size of the dish image is adjusted by enlargement or reduction of the dish image. The change in the size of the dish can be suppressed, and an increase in the difference between the size of the dish displayed on the dish 302 and the actual size of the dish can be suppressed.

<Modification 2>
In step S1, the projection target storage unit 23 detects only the position and size of the menu display 301, and detects the position and size of the plate 302 in response to the reception of the dish selection result by the receiving unit 1. Good. In this case, the dish 302 only needs to be placed on the table 200 before step S8 shown in FIG. 12 is executed. Compared to the case where the operation shown in FIG. The degree of freedom of the timing to arrange the position becomes higher.

<Modification 3>
Although the TOF sensor is used as the sensor 5, the sensor 5 is not limited to the TOF sensor and can be changed as appropriate. For example, the sensor 5 may detect the menu display body 301 and the dish 302 using parallax like a stereo camera. The sensor 5 may be an RGB camera. In this case, the projection target detection unit 32 may detect the menu display body 301 and the dish 302 using image information output from the RGB camera. By using an RGB camera, it is possible to detect an object (projection target) using information such as the color of the object or characters written on the object.

<Modification 4>
The first projection target is not limited to the menu display 301, and can be changed as appropriate as long as it is a projection target. Further, the second projection target is not limited to the dish 302, and can be appropriately changed as long as it is a projection target.

<Modification 5>
As the first image projected on the first projection target, the first menu image 501, the Japanese food menu image 502a, the Chinese menu image 502b, and the Italian menu image 502c are alternatively used. It may be a menu image of a kind. Furthermore, the first image is not limited to a screen for selecting a dish image, and may be a selection image for selecting an image projected on the second projection target.
The second image projected on the second projection target is not limited to the dish image and can be changed as appropriate.

<Modification 6>
In each of the Japanese food menu image 502a, the Chinese menu image 502b, and the Italian menu image 502c, the food may be indicated by a food image instead of the food name (character), and the food name (character) and the food image. And may be indicated.

<Modification 7>
All or a part of the elements realized by the processing unit 3 executing the program may be realized by hardware by an electronic circuit such as a field programmable gate array (FPGA) or an application specific IC (ASIC). It may be realized by cooperation of software and hardware.

<Modification 8>
In the projection unit 4, a liquid crystal light valve is used as the light modulation device, but the light modulation device is not limited to the liquid crystal light valve and can be changed as appropriate. For example, the light modulation device may have a configuration using three reflective liquid crystal panels. Further, the light modulation device may have a configuration using one liquid crystal panel, a method using three digital mirror devices (DMD), a method using one digital mirror device, and the like. When only one liquid crystal panel or DMD is used as the light modulation device, members corresponding to the color separation optical system and the color synthesis optical system are unnecessary. In addition to the liquid crystal panel and the DMD, a configuration capable of modulating the light emitted from the light source can be employed as the light modulation device.

DESCRIPTION OF SYMBOLS 1 ... Reception part, 2 ... Memory | storage part, 21 ... Program memory | storage part, 22 ... Image information memory | storage part, 23 ... Projection object memory | storage part, 3 ... Processing part, 31 ... Production | generation part, 32 ... Projection object detection part, 4 ... Projection Part 5 ... sensor 100 ... projector 101 ... remote controller.

Claims (5)

A generating unit that generates a projection image by combining the first image and the second image;
A projection unit that projects the projection image onto a projection area including a first projection target and a second projection target;
A detection unit that detects the position of the first projection target and the position of the second projection target;
The generation unit generates the projection image so that the first image is projected at the position of the first projection target and the second image is projected at the position of the second projection target.
The first image is a selection image for selecting an image,
The second image is an image selected using the selected image.
A projector characterized by that. The detection unit also detects the size of the second projection target,
The projector according to claim 1, wherein the generation unit adjusts a size of the second image according to a size of the second projection target.   The projector according to claim 2, wherein the generation unit adjusts a size of the second image by performing a trimming process on the second image.   The projector according to claim 1, wherein the selected image is an image for selecting one image from a plurality of images. Combining the first image and the second image to generate a projection image;
Projecting the projection image onto a projection area including a first projection target and a second projection target;
Detecting the position of the first projection target and the position of the second projection target,
In the step of generating the projection image, the projection image is generated so that the first image is projected at the position of the first projection target and the second image is projected at the position of the second projection target.
The first image is a selection image for selecting an image,
The second image is an image selected using the selected image.
And a projector control method.

Images