JP2018036481A - Image projection system, information processing apparatus, image projection method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately calculate the time required for creation of images for projection in a digital signage obtained by combining a plurality of surfaces.SOLUTION: An image projection system comprises: dividing means that divides one image according to the positions and sizes of a plurality of surfaces included in a predetermined area to create a plurality of divisional images; control means that controls to project the plurality of divisional images respectively to projection surfaces corresponding to the plurality of surfaces through projection devices corresponding respectively to the plurality of surfaces. The dividing means further includes calculation means that calculates the time required for the creation of the plurality of divisional images by using information on the attribute of the image and information on the layout of the plurality of surfaces.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an image projection system, an information processing apparatus, an image projection method, and a program.

  In recent years, digital signage that distributes content such as moving images to an image projection apparatus such as a projector and projects the content on a large screen installed outdoors, in a store, in a public space or the like has been widely used. In the case of digital signage, it is possible to project content suitable for time and place in real time, so that the advertiser can expect a high advertising effect.

  However, in the case of large-scale digital signage using the image projection apparatus as described above, a flat surface with a certain size is required as a projection target. For this reason, there is a problem that the applicable places are limited. In contrast, for example, if one digital signage can be realized by combining a plurality of surfaces included in a predetermined area, such as a window glass (light transmission surface) of a building, the digital signage The application range can be expanded. In particular, if it can be applied to medium- and high-rise buildings with a large number of window glasses, digital signage on a larger scale than before can be realized.

  Here, when digital signage is realized by using a plurality of window glasses, it is necessary to project a moving image for projection corresponding to each position on an image projection device arranged corresponding to each window glass. For this reason, the number of projection moving images to be generated becomes enormous, and it takes a certain period of time until digital signage can actually start after receiving a request from an advertiser.

  On the other hand, in order to enhance the advertising effect, it is important to start digital signage at an appropriate timing, and for that purpose, it is required to accurately calculate the startable time.

  The present invention has been made in view of the above problems, and an object of the present invention is to accurately calculate the time required to generate an image for projection in digital signage in which a plurality of surfaces are combined.

The image projection system according to each embodiment of the present invention has the following configuration. That is,
A dividing unit that generates a plurality of divided images by dividing one image according to the positions and sizes of the plurality of surfaces included in the predetermined area;
Control means for controlling the plurality of divided images to be projected onto each of the projection planes corresponding to the plurality of planes via a projection device corresponding to each of the plurality of planes;
The dividing means further includes:
It has a calculation means for calculating the time required to generate the plurality of divided images using the attribute information of the image and the layout information of the plurality of surfaces.

  According to each embodiment of the present invention, it is possible to accurately calculate the time required to generate an image for projection in digital signage in which a plurality of surfaces are combined.

It is a figure which shows the example of application of an image projection system. It is a figure for demonstrating operation | movement of each signage apparatus arrange | positioned in the position corresponding to each window glass of a building. It is a figure which shows an example of the system configuration | structure of an image projection system. It is a figure which shows an example of the hardware constitutions of information processing apparatus. It is a figure which shows an example of signage object information. It is a figure which shows an example of image information. It is a figure which shows an example of schedule information. It is a flowchart which shows the flow of a signage process. It is a figure which shows the function structure of the calibration part of information processing apparatus. It is a sequence diagram of a 1st calibration process. It is a figure which shows an example of the selection screen of the information processing apparatus displayed at the time of a 1st calibration process. It is a figure which shows an example of the calibration pattern image projected at the time of a 1st calibration process. It is a figure which shows another example of the calibration pattern image projected at the time of a 1st calibration process. It is a sequence diagram of a 2nd calibration process. It is a figure which shows an example of the white image projected at the time of a 2nd calibration process. It is a figure which shows the function structure of the image process part of information processing apparatus. It is a figure which shows the specific example of an image process. It is a 1st flowchart which shows the flow of an image process. It is a 2nd flowchart which shows the flow of an image process. It is a 1st flowchart which shows the flow of a production | generation time calculation process. It is a flowchart which shows the flow of a 1st division | segmentation process. It is a figure which shows an example of a 1st division | segmentation process. It is a flowchart which shows the flow of a transmission process. It is a figure which shows the function structure of the signage control part of information processing apparatus. It is a flowchart which shows the flow of a signage control process. It is a 2nd flowchart which shows the flow of a production | generation time calculation process.

  Details of each embodiment will be described below with reference to the accompanying drawings. In the description of the specification and drawings according to each embodiment, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

[First Embodiment]
<1. Application example of image projection system>
First, an application example of the image projection system according to the first embodiment will be described. FIG. 1 is a diagram illustrating an application example of an image projection system. The example of FIG. 1 shows a state in which a large-scale digital signage is realized by using a plurality of window glasses (light transmission surfaces) attached to the outer surface of a building 110 which is a middle-rise building.

  As shown in FIG. 1, a plurality of window glasses (window glass group 120) are attached to the outer surface of the building 110 on the road side (in the example of FIG. 1, 30 window glasses). In the image projection system according to the first embodiment, for each of the plurality of window glasses (window glass group 120) attached to the outer surface of the building 110, each projection moving image included in the projection moving image group 130 from the inside. Project an image.

  Thereby, according to the image projection system which concerns on 1st Embodiment, the large-scale digital signage which consists of the area | region for 30 pieces of window glass (The example of FIG. 1 shows the scene where the huge tree was displayed. Can be realized). In addition, digital signage can be realized in a relatively conspicuous place such as the outer surface of the road side. That is, digital signage with high advertising effect can be realized.

  In addition, according to the image projection system according to the first embodiment, as compared with a digital signage that uses a large screen or a side wall surface of a building that does not have a window glass as in the past, it is digital. The applicable range of signage can be expanded.

<2. Operation of the signage device>
Next, the operation of each signage device (in this embodiment, a projector (projection device), an electric screen (projection surface), and an illumination device) constituting the image projection system according to the first embodiment. explain.

  Drawing 2 is a figure for explaining operation of each signage device arranged in a position corresponding to each window glass of a building. (A)-(d) of FIG. 2 (A) has shown the operation | movement of a projector and an electric screen among each signage apparatus arrange | positioned inside each window glass of the building 110. FIG.

  As shown to (a) of FIG. 2 (A), the projector is arrange | positioned up and down inside each window glass of the building 110, and it is two projectors (upper projector) with respect to one window glass. And a lower moving projector) are used to project a moving image for projection. Thereby, even when the size of the window glass is large, an appropriate projection moving image can be projected.

  Moreover, as shown to (b) of FIG. 2 (A), the electric screen is arrange | positioned inside each window glass of the building 110. As shown in FIG. When projecting a moving image for projection using a projector, the light transmittance is changed by turning on the motorized screen so that each window glass is in a translucent state. The electric screen (projection surface) forms a light transmission surface together with the window glass (projection target).

  FIG. 2C shows a state in which the lamps of the upper projector and the lower projector are turned on after the electric screen is turned on. The upper projector has a projection range on the upper side of the window glass, and the lower projector has a projection range on the lower side of the window glass. The upper projector and the lower projector are adjusted so that a part of the projection range overlaps. That is, in the present embodiment, the projection of the moving image for projection onto the projection range corresponding to the size of the window glass is realized by two projectors.

  (D) of FIG. 2 (A) has shown the mode that the moving image for projection was projected by the upper side projector and the lower side projector. In the image projection system according to the present embodiment, one digital signage is realized as a whole by projecting a moving image for projection onto each motorized screen corresponding to each window glass included in the window glass group 120. . Therefore, for each motorized screen corresponding to each window glass, the projection moving image generated based on the moving image of a part of the original moving image (moving image provided by the advertiser) is vertically And is projected by two projectors.

  As shown in FIG. 2B, in the image projection system according to the first embodiment, when the projection of the projection moving image group 130 is completed, the electrical decoration device group 140 (electrical decoration devices 140_1 to 140_6). ) Is turned on and the motorized screen is turned off.

  As described above, in the image projection system according to the first embodiment, the upper projector, the lower projector, the electric screen, and the illumination device group 140 operate in conjunction with each other.

<3. System configuration of image projection system>
Next, the system configuration of the image projection system according to the first embodiment will be described. FIG. 3 is a diagram illustrating an example of a system configuration of the image projection system. As shown in FIG. 3, the image projection system 300 includes projectors 310_1a to 310_30b, external memories 320_1a to 320_30b, electric screens 330_1 to 330_30, a control device 340, and illumination devices 140_1 to 140_6. The image projection system 300 also includes a time server 360, an information processing device 370, an imaging device 381, and a color luminance meter 382.

  The projectors 310_1a to 310_30b, the control device 340, the time server 360, and the information processing device 370 are communicably connected via a network 390.

  The projectors 310_1a to 310_30b are arranged up and down inside each of the window glass groups 120 included in a predetermined region on the outer surface of the building 110. As described above, since 30 window glasses are attached to a predetermined area on the outer surface of the building 110, 60 projectors are arranged in this embodiment.

  Each of the projectors 310_1a to 310_30b executes the first calibration process using the calibration pattern image so that the projection moving image is projected without distortion onto the projection range corresponding to the size of the window glass to be projected. . In addition, each of the projectors 310_1a to 310_30b performs the second calibration process using the white image so that the projection moving image is projected with a predetermined color on the window glass to be projected.

  Further, the projectors 310_1a to 310_30b read the designated projection moving images from the projection moving images respectively stored in the external memories 320_1a to 320_30b based on the projection start instruction from the information processing device 370. Furthermore, each of the projectors 310_1a to 310_30b projects the projection moving image read out onto the motorized screen corresponding to the window glass to be projected.

  The external memories 320_1a to 320_30b are connected to the projectors 310_1a to 310_30b, respectively. The external memories 320_1a to 320_30b store the projection moving images projected by the projectors 310_1a to 310_30b, respectively. The external memories 320_1a to 320_30b mentioned here include, for example, a USB (Universal Serial Bus) memory.

  The electric screens 330 </ b> _ <b> 1 to 330 </ b> _ <b> 30 are disposed inside the window glass groups 120 included in a predetermined region on the outer surface of the building 110. As described above, since 30 window glasses are attached to a predetermined area on the outer surface of the building 110, 30 electric screens are arranged in this embodiment.

  The electric screens 330_1 to 330_30 are connected to the control device 340 via a power cable, and the control device 340 individually controls the ON state and the OFF state. When the electric screens 330_1 to 330_30 are controlled to be in the ON state by the control device 340, the light transmission surface is reduced in light transmittance and becomes translucent. On the other hand, when the electric screens 330_1 to 330_30 are controlled to be in the OFF state by the control device 340, the light transmission surface is in a transparent state with increased light transmittance.

  The control device 340 controls the electric screens 330_1 to 330_30 to the ON state based on the screen ON instruction from the information processing device 370. Further, the control device 340 controls the electric screens 330_1 to 330_30 to be in an OFF state based on the screen OFF instruction from the information processing device 370.

  Furthermore, the control device 340 controls the lighting devices 140_1 to 140_6 to be in an ON state based on the lighting ON instruction from the information processing device 370. In addition, the control device 340 controls the electrical decoration devices 140_1 to 140_6 to be in an OFF state based on the electrical decoration OFF instruction from the information processing device 370.

  The illumination devices 140_1 to 140_6 are connected to the control device 340 via a power cable, and the control device 340 controls the ON state and the OFF state.

  The time server 360 provides time information to the information processing device 370 in order to synchronize the time between the projectors 310_1a to 310_30b and the information processing device 370.

  The information processing device 370 is a device for controlling signage processing in the image projection system 300. The information processing apparatus 370 is installed with a calibration program, an image processing program, and a signage control program. The information processing apparatus 370 functions as a calibration unit 371, an image processing unit 372, and a signage control unit 373 by executing these programs.

  The calibration unit 371 executes the first calibration process and the second calibration process together with the projectors 310_1a to 310_30b. Further, the calibration unit 371 calculates the correction parameters used when generating the projection moving images respectively projected by the projectors 310_1a to 310_30b by executing the first calibration process.

  Further, the calibration unit 371 calculates the RGB levels set in the projectors 310_1a to 310_30b by executing the second calibration process together with the projectors 310_1a to 310_30b.

  The image processing unit 372 is an example of a dividing unit. The image processing unit 372 uses the signage target information stored in the signage target information management unit 375 and the image information stored in the image information management unit 376 to project from the original moving image provided by the advertiser. A moving image group is generated. The signage target refers to the building 110 in which large-scale digital signage is realized by the image projection system 300. Further, the signage target information includes information such as the position and size of each window glass of the window glass group 120 included in a predetermined area on the outer surface of the building 110. Furthermore, the image information includes information for managing various images, correction parameters, and the like used when generating the projection moving image.

  When generating the projection moving image group, the image processing unit 372 uses the attribute information of the original moving image and the signage target information to calculate the time required to generate the projection moving image group. As a result, the image processing unit 372 can clearly indicate to the advertiser the time required to generate the projection moving image group. As a result, the advertiser can examine in detail the start time with higher advertising effectiveness as the start time of digital signage.

  Further, the image processing unit 372 stores the divided still image (details will be described later) generated in the process of generating the projection moving image in the image information management unit 376. Furthermore, the image processing unit 372 transmits the projection moving images of the generated projection moving image group to the projectors 310_1a to 310_30b. Thereby, the projectors 310_1a to 310_30b store the respective moving images for projection in the external memories 320_1a to 320_30b.

  The signage control unit 373 is an example of a control unit. The signage control unit 373 performs signage control processing based on the schedule information stored in the schedule information management unit 377. For example, the signage control unit 373 transmits a projection start instruction or a projection end instruction to each of the projectors 310_1a to 310_30b according to the projection start time or the projection end time identified based on the schedule information. Further, the signage control unit 373 transmits a screen ON instruction or a screen OFF instruction to the electric screens 330_1 to 330_30 according to the projection start time or the projection end time identified based on the schedule information. Furthermore, the signage control unit 373 transmits an electrical decoration OFF instruction or an electrical decoration ON instruction to the electrical decoration devices 140_1 to 140_6 according to the projection start time or the projection end time identified based on the schedule information.

  When each of the projectors 310_1a to 310_30b executes the first calibration process, the imaging device 381 captures the calibration pattern images projected by the projectors 310_1a to 310_30b and transmits them to the information processing device 370. Note that the imaging device 381 and the information processing device 370 are connected via, for example, a USB cable.

  When each of the projectors 310_1a to 310_30b executes the second calibration process, the color luminance meter 382 measures the color temperature of each white image projected by each of the projectors 310_1a to 310_30b and transmits the measurement result to the information processing device 370. To do. Note that the color luminance meter 382 and the information processing device 370 are connected via, for example, a USB cable.

<4. Hardware configuration of information processing apparatus>
Next, the hardware configuration of the information processing apparatus 370 will be described. FIG. 4 is a diagram illustrating an example of a hardware configuration of the information processing apparatus.

  As illustrated in FIG. 4, the information processing apparatus 370 includes a CPU (Central Processing Unit) 401, a ROM (Read Only Memory) 402, and a RAM (Random Access Memory) 403. The CPU 401, ROM 402, and RAM 403 form a so-called computer. Furthermore, the information processing apparatus 370 includes an auxiliary storage unit 404, a display unit 405, an input unit 406, a network I / F (Interface) unit 407, and a USB I / F unit 408. Note that the hardware of the information processing apparatus 370 is connected to each other via a bus 409.

  The CPU 401 is a device that executes various programs (for example, a calibration program, an image processing program, a signage control program, etc.) stored in the auxiliary storage unit 404.

  The ROM 402 is a nonvolatile main storage device. The ROM 402 stores various programs and data necessary for the CPU 401 to execute various programs stored in the auxiliary storage unit 404. Specifically, a boot program such as BIOS (Basic Input / Output System) or EFI (Extensible Firmware Interface) is stored.

  The RAM 403 is a volatile main storage device such as a DRAM (Dynamic Random Access Memory) or an SRAM (Static Random Access Memory). The RAM 403 provides a work area that is expanded when various programs stored in the auxiliary storage unit 404 are executed by the CPU 401.

  The auxiliary storage unit 404 is an auxiliary storage device that stores various programs executed by the CPU 401 and various information used when the various programs are executed. Various types of information stored in the auxiliary storage unit 404 include signage target information, image information, schedule information, various images managed by the image information, correction parameters, and the like. The signage target information management unit 375, the image information management unit 376, and the schedule information management unit 377 are realized by the auxiliary storage unit 404.

  The display unit 405 is a display device that displays various screens. The input unit 406 is an input device for inputting various information to the information processing apparatus 370. The network I / F unit 407 is an interface device for connecting to the network 390. The information processing device 370 performs communication with the projectors 310_1a to 310_30b, the control device 340, and the time server 360 via the network I / F unit 407.

  The USB I / F unit 408 is an interface device for connecting a USB cable. The information processing device 370 transmits and receives data to and from the imaging device 381 and the color luminance meter 382 via the USB I / F unit 408.

<5. Information stored in each management unit>
Next, various information (signage target information, image information, schedule information) stored in each management unit (signage target information management unit 375, image information management unit 376, schedule information management unit 377) of the information processing device 370 will be described. To do.

(1) Signage target information First, the signage target information stored in the signage target information management unit 375 will be described. FIG. 5 is a diagram illustrating an example of signage target information. As shown in FIG. 5A, the signage target information 500 is generated for each signage target. In this embodiment, the signage target ID of the building 110 is “S001”.

  Further, as shown in FIG. 5A, the signage target information 500 includes information items such as “floor”, “window ID”, “window information”, “projector ID”, “motorized screen ID”, “ The illumination device ID "is included.

  The “floor” stores the floor number of the floor to which the window glass group 120 included in the predetermined area on the outer surface of the building 110 is attached.

  The “window ID” stores an identifier for identifying each window glass of the window glass group 120 included in a predetermined area on the outer surface of the building 110.

  The “window information” further includes “position”, “horizontal size”, and “vertical size”. Here, the “position”, “horizontal size”, and “vertical size” of each window glass included in the “window information” will be described with reference to FIG.

  As illustrated in FIG. 5B, the image projection system 300 realizes large-scale digital signage using a predetermined area 510 on the outer surface of the building 110. At this time, the image projection system 300 defines a reference point (origin) and a reference axis (x axis, y axis) when specifying the coordinates of each window glass included in the predetermined area 510.

  In FIG. 5B, a point 520 indicates the origin in the predetermined area 510. An axis 530 indicates the x axis when the point 520 is the origin in the predetermined area 510, and an axis 540 indicates the y axis when the point 520 is the origin in the predetermined area 510.

  As shown in FIG. 5B, by defining the predetermined area 510, the origin 520, the x-axis 530, and the y-axis 540, the position, horizontal size, and vertical size of each window glass can be uniquely specified.

  Returning to the description of FIG. The “position” stores coordinates indicating the position of the lower left corner of each window glass in the predetermined area 510 on the outer surface of the building 110. In the case of FIG. 5A, the coordinates of the position of the lower left corner of the window glass of window ID = “W201” are the origin (0, 0).

The “horizontal size” stores the length (width) of each window glass in the horizontal direction. For example, in the case of the window glass with window ID = “W201”, the coordinates of the position of the lower left corner are (0, 0), and the coordinates of the position of the lower right corner are (x ₁₂ , 0). Therefore, the horizontal size = “x ₁₂ ”. In the case of the window glass with window ID = “W202”, the coordinates of the position of the lower left corner are (x ₂₁ , 0), and the coordinates of the position of the lower right corner are (x ₂₂ , 0). Therefore, the horizontal size = “x ₂₂ −x ₂₁ ”.

The “vertical size” stores the length (height) of each window glass in the vertical direction. For example, in the case of the window glass with window ID = “W201”, the coordinates of the position of the lower left corner are (0, 0), and the coordinates of the position of the upper left corner are (0, y ₁₂ ). Therefore, the vertical size = “y ₁₂ ”. In the case of the window glass with window ID = “W301”, the coordinates of the lower left corner position are (0, y ₂₁ ), and the coordinates of the upper left corner position are (0, y ₂₂ ). Therefore, the vertical size = “y ₂₂ −y ₂₁ ”.

  “Projector ID” stores an identifier for identifying a projector arranged at a position corresponding to each window glass. In the example of FIG. 5A, projectors identified by projector ID = “PJ201A” and “PJ201B” are respectively arranged at positions corresponding to the window glass identified by window ID = “W201”. Is shown.

  “Electric screen ID” stores an identifier for identifying the electric screen arranged at a position corresponding to each window glass. The example of FIG. 5A shows that the electric screen identified by the electric screen ID = “SC201” is arranged at the position corresponding to the window glass identified by the window ID = “W201”. Yes.

  In the “lighting device ID”, an identifier for identifying the light lighting device arranged at a position corresponding to any window glass on each floor is stored. The example of FIG. 5A shows that the electrical decoration device identified by the electrical decoration device ID = “E200” is arranged on the floor identified by the floor = “2F”.

(2) Image Information Next, image information stored in the image information management unit 376 will be described. FIG. 6 is a diagram illustrating an example of image information. As shown in FIG. 6, the image information 600 includes “moving image ID”, “signage target ID”, “window ID”, and “projector ID” as information items. Further, the image information 600 includes “correction parameter ID”, “calculation date / time”, “divided still image group ID”, “projection moving image ID”, and “generation date / time” as information items.

  The “moving image ID” stores an identifier for identifying the original moving image provided by the advertiser. The example of FIG. 6 indicates that the moving image identified by “C100” as the moving image ID is stored in the image information management unit 376.

  The “signage target ID” stores an identifier for identifying the building 110 that realizes digital signage based on the original moving image provided by the advertiser. The example of FIG. 6 shows that digital signage is realized in the building 110 identified by the signage target ID = “S001” based on the moving image identified by the moving image ID = “C100”.

  The “window ID” stores an identifier for identifying each window glass of the window glass group 120 included in the predetermined area 510 on the outer surface of the building 110 identified by the signage target ID = “S001”.

  The “projector ID” stores an identifier for identifying a projector disposed at a position corresponding to each window glass identified by the window ID.

  The “correction parameter ID” stores an identifier for identifying the correction parameter calculated by the calibration unit 371. As described above, since the calibration unit 371 calculates a correction parameter for each window glass by executing the first calibration process, the correction parameter ID is stored in association with the window ID. The “calculation date / time” stores the date / time when the correction parameter was calculated.

  The “divided still image group ID” is used to identify the divided still image group generated in the process of generating the projection moving image group based on the moving image identified by the moving image ID = “C100”. An identifier is stored.

  The “projection video ID” includes an identifier for identifying each projection video included in the projection video group generated based on the video identified by the video ID = “C100”. Stored.

  In “generation date and time”, the date and time when each projection moving image identified by the projection moving image ID is generated is stored.

  The example of FIG. 6 shows that the projection moving image ID = “M201A”, “M201B”,... Is generated from the moving image with the moving image ID = “C100”.

  Further, according to the example of FIG. 6, the projection moving image with the projection moving image ID = “M201A” has the projector ID = “PJ201A” arranged at the position corresponding to the window glass with the window ID = “W201”. Projected by a projector.

  Further, according to the example of FIG. 6, when generating the projection moving image with the projection moving image ID = “M201A”, the correction parameter (correction parameter ID = “P201”) is set to “May 25, 2016”. It has been calculated.

  Further, according to the example of FIG. 6, the divided still image group of the divided still image group ID = “C201” is corrected by the correction parameter (correction parameter ID = “P201”). Further, according to the example of FIG. 6, based on the divided still image group with the corrected divided still image group ID = “C201”, the projection moving image ID = “M201A” on “June 10, 2016”. And “M201B” projection moving images are generated.

  Hereinafter, a group of projection moving images with projection IDs “M201A” to “M705B” generated based on a moving image with a moving image ID = “C100” is referred to as “content 100”.

  In the example of FIG. 6, the image information 600 with the moving image ID = “C100” is shown, but the image information management unit 376 has a projection generated based on the moving image identified by the other moving image ID. It is assumed that the moving image group is stored in the same manner. For example, it is assumed that the image information management unit 376 stores a projection moving image group (“content 101”) generated based on the moving image with the moving image ID = “C101”. The image information management unit 376 stores a projection moving image group (“content 102”) generated based on the moving image with the moving image ID = “C102”. Furthermore, it is assumed that the image information management unit 376 stores the image information of each moving image ID = “C101” and “C102”.

(3) Schedule Information Next, schedule information stored in the schedule information management unit 377 will be described. FIG. 7 is a diagram illustrating an example of schedule information. As shown in FIGS. 7A to 7C, the schedule information 710 to 730 is generated for each signage target and for each day of the week. 7A to 7C show schedule information from “Friday” to “Sunday” for the building 110 with the signage target ID = “S001”, respectively. As shown in FIGS. 7A to 7C, the schedule information 710 to 730 includes “time” and “signage device” as information items.

  In “Time”, a time zone in which the window glass group 120 of the building 110 identified by the signage target ID = “S001” can be used as digital signage is described. 7A to 7C, in the case of the building 110, the window glass group 120 can be used as digital signage in the time zone from 10:00 to 22:00. It is.

  “Signage device” further includes “projector”, “motorized screen”, and “lighting device”. In the “projector”, a time zone in which the projection moving images are projected by the projectors 310_a to 310_30b is described.

  According to the example of FIG. 7A, a projection moving image group (“content” generated based on the moving image identified by the moving image ID = “C100” between 18:00 and 19:00. 100 ") is projected.

  According to the example of FIG. 7B, a projection moving image group (“content” generated based on the moving image identified by the moving image ID = “C100” between 18:00 and 19:00. 100 ") is projected. Further, from 20:30 to 21:30, a projection moving image group (“content 101”) generated based on the moving image identified by the moving image ID = “C101” is projected.

  According to the example of FIG. 7C, a projection moving image group (“content” generated based on the moving image identified by the moving image ID = “C100” between 18:00 and 19:00. 100 ") is projected. Further, a projection moving image group (“content 102”) generated based on the moving image identified by the moving image ID = “C102” is projected between 20:00 and 21:00.

  “Electric screen” describes a time period in which the electric screens 330_1 to 330_30 are in the ON state. The time zone in which the electric screens 330_1 to 330_30 are turned on is the same time zone as the time when the projection moving image group is projected by the projectors 310_1a to 310_30b. Therefore, in the example of FIG. 7A, the state is ON from 18:00 to 19:00. Further, in the example of FIG. 7B, between 18:00 and 19:00 and between 20:30 and 21:30, in the example of FIG. 7C, 18:00 to 19 It is in the ON state between 0:00 and 20:00 to 21:00.

  In the “lighting device”, a time zone in which the lighting devices 140_1 to 140_6 are turned on is described. In the present embodiment, the illumination devices 140_1 to 140_6 are turned on in the time zone after the evening (in the example of FIGS. 7A to 7C, after 17:00). However, the time zone in which the projection moving images are projected by the projectors 310_1a to 310_30b is excluded.

  As described above, the schedule information 710 to 730 includes a schedule relating to the projection schedule of the projector, a schedule relating to the operation schedule of the electric screen, and a schedule relating to the operation schedule of the electrical decoration device. Hereinafter, the schedule related to the projection schedule of the projector is referred to as “projection schedule”, the schedule related to the operation schedule of the electric screen is referred to as “screen schedule”, and the schedule related to the operation schedule of the electrical decoration device is referred to as “electric decoration schedule”.

<6. Signage processing flow in image projection system>
Next, the flow of signage processing in the image projection system 300 will be described. FIG. 8 is a flowchart showing the flow of signage processing. When the installation of the image projection system 300 is completed in the building 110, the image projection system 300 executes the signage process shown in FIG.

  Specifically, in step S801, the image projection system 300 performs calibration processing (first calibration processing, second calibration processing, and the like) using the projectors 310_1a to 310_30b.

  In step S802, the image projection system 300 performs image processing. Specifically, the image projection system 300 generates a plurality of projection moving image groups (“content 100” to “content 102”), transmits the projection moving images to the projectors 310_1a to 310_30b, and the like.

  In step S803, the image projection system 300 performs a signage control process. Specifically, the image projection system 300 performs projection start / end control of each projection moving image by the projectors 310_1a to 310_30b based on the schedule information 710 to 730. Furthermore, the image projection system 300 performs ON / OFF control of the electric screens 330_1 to 330_30 and ON / OFF control of the electrical decoration devices 140_1 to 140_6 based on the schedule information 710 to 730.

<7. Details of calibration process>
Next, details of the calibration process (step S801) in the image projection system 300 will be described.

(1) Functional Configuration of Calibration Unit First, the functional configuration of the calibration unit 371 of the information processing apparatus 370 that executes calibration processing will be described. FIG. 9 is a diagram illustrating a functional configuration of the calibration unit of the information processing apparatus.

  As illustrated in FIG. 9, the calibration unit 371 includes a first calibration unit 911 and a second calibration unit 912. The first calibration unit 911 is activated during the first calibration process and executes various processes. Specifically, the first calibration unit 911 calculates a correction parameter used when the image processing unit 372 generates a projection moving image. The first calibration unit 911 stores the calculated correction parameter in the image information management unit 376 and stores the correction parameter ID indicating the calculated correction parameter and the calculation date in the image information 600 in association with the window ID. . As a result, the image processing unit 372 can generate a projection moving image without distortion when projected.

  The second calibration unit 912 is activated during the second calibration process and executes various processes. Specifically, the second calibration unit 912 calculates an RGB level so that the projection moving image is projected with a predetermined color, and sets the calculated RGB levels in the projectors 310_1a to 310_30b.

(2) Flow of First Calibration Process Next, details of the first calibration process will be described based on the sequence diagram of FIG. 10 while sequentially referring to FIGS. FIG. 10 is a sequence diagram of the first calibration process.

  As illustrated in FIG. 10, in step S <b> 1001, the operator 1000 inputs an activation instruction for activating the first calibration unit 911 to the information processing apparatus 370.

  In response to the activation instruction being input by the operator 1000, in step S1002, the first calibration unit 911 is activated, and the display unit 405 of the information processing apparatus 370 is subject to the first calibration process (projector). ) Is displayed for the operator 1000 to select.

  In step S1003, the operator 1000 selects, from the selection screen displayed on the display unit 405, the window glass on which the target (projector) for executing the first calibration process is arranged.

  In response to the window glass being selected by the operator 1000, the first calibration unit 911 identifies a projector disposed at a position corresponding to the selected window glass. In steps S1004 and S1005, the first calibration unit 911 transmits a lamp ON instruction to each of the identified projectors.

  FIG. 11 is a diagram illustrating an example of a selection screen of the information processing apparatus displayed during the first calibration process. When the first calibration unit 911 is activated, a selection screen 1100 is displayed on the display unit 405 of the information processing device 370. As shown in FIG. 11, the selection screen 1100 includes a layout 1110 of the window glass group 120 of the building 110.

  The operator 1000 selects a window glass on which a target for executing the first calibration process is arranged by pressing a rectangular button indicating the window glass in the layout 1110 and pressing a completion button 1120. The example of FIG. 11 shows a state where the rectangular button 1111 is pressed and the completion button 1120 is pressed.

  The window glass specified by the rectangular button 1111 is the window glass 1128 with the window ID = “W703”. As shown in the lower side of FIG. 11, a projector 310_28a (projector ID = “PJ703A”) and a projector 310_28b (projector ID = “PJ703B”) are arranged at positions corresponding to the window glass 1128.

  Accordingly, in step S1004, the first calibration unit 911 transmits a lamp ON instruction to the projector 310_28a. In step S1005, the first calibration unit 911 transmits a lamp ON instruction to the projector 310_28b. At this time, it is assumed that the electric screen 330_28 (electric screen ID = “SC703”) of the window glass 1128 is in the ON state.

  Subsequently, in step S1006, the first calibration unit 911 generates a calibration pattern image. The first calibration unit 911 generates two different calibration pattern images as calibration pattern images.

  In step S1007, the first calibration unit 911 transmits the first calibration pattern image to the projector 310_28a. In step S1008, the first calibration unit 911 transmits the second calibration pattern image to the projector 310_28b.

  In step S1009, the projector 310_28a projects the first calibration pattern image transmitted from the first calibration unit 911. In step S1010, the projector 310_28b projects the second calibration pattern image transmitted from the first calibration unit 911.

  In step S <b> 1011, the operator 1000 inputs an imaging instruction to the imaging device 381 in order to capture the projected first and second calibration pattern images using the imaging device 381.

  In step S1012, the imaging device 381 performs shooting processing on the projected first and second calibration pattern images, and in step S1013, the imaging device 381 transmits the shooting result to the information processing device 370.

  FIG. 12 is a diagram illustrating an example of a calibration pattern image projected during the first calibration process. As shown in FIG. 12, the projector 310_28a projects the first calibration pattern image, and the projector 310_28b projects the second calibration pattern image. The operator 1000 captures the projected first and second calibration pattern images using the imaging device 381, and transmits the imaging result to the information processing device 370.

  Returning to the description of FIG. In step S1014, the operator 1000 inputs an exchange instruction for exchanging the first calibration pattern image and the second calibration pattern image.

  In step S1015, the first calibration unit 911 transmits the second calibration pattern image to the projector 310_28a in response to the replacement instruction. In step S1016, the first calibration unit 911 transmits the first calibration pattern image to the projector 310_28b.

  In step S1017, the projector 310_28a projects the second calibration pattern image transmitted from the first calibration unit 911. In step S1018, the projector 310_28b projects the first calibration pattern image transmitted from the first calibration unit 911.

  In step S <b> 1019, the operator 1000 inputs an imaging instruction to the imaging device 381 in order to capture the projected second and first calibration pattern images using the imaging device 381.

  In step S1020, the imaging device 381 performs imaging processing on the projected second and first calibration pattern images. In step S1021, the imaging device 381 transmits the imaging result to the information processing device 370.

  FIG. 13 is a diagram illustrating another example of the calibration pattern image projected during the first calibration process. As shown in FIG. 13, the projector 310_28a projects the second calibration pattern image, and the projector 310_28b projects the first calibration pattern image. The operator 1000 captures the projected second and first calibration pattern images using the imaging device 381, and transmits the imaging result to the information processing device 370.

  Returning again to the description of FIG. In step S <b> 1022, the operator 1000 inputs to the first calibration unit 911 to specify the imaging result used for calculating the correction parameter. In step S <b> 1023, the first calibration unit 911 reads the imaging result designated by the operator 1000.

  In step S1024, the operator 1000 performs input for instructing calculation of the correction parameter. In step S1025, the first calibration unit 911 calculates a correction parameter based on the read imaging result.

  The correction parameters calculated by the first calibration unit 911 include various geometric corrections such as alignment correction, scale alignment correction, and distortion correction for the first and second calibration pattern images. Geometric parameters are included. This geometric parameter varies depending on various factors such as an installation position of the electric screen and the projection apparatus, and individual differences between optical apparatuses of the projection apparatus. For this reason, geometric parameters often differ for each window glass (combination of a motorized screen and a projection device). In an image processing unit 372 to be described later, by performing correction using an appropriate geometric parameter for each window glass, a part of the projection moving image in the projection moving image group 130 projected as shown in FIG. 1 is obtained. Avoid the occurrence of problems such as distorted display.

  The first calibration unit 911 stores the calculated correction parameter in the image information management unit 376. In addition, the first calibration unit 911 associates the correction parameter ID (for example, “P703”) and the calculation date (for example, “2016.5.25”) with the window ID (for example, “W703”) to generate an image. Stored in information 600.

(3) Flow of Second Calibration Process Next, the details of the second calibration process will be described based on the sequence diagram of FIG. 14 with reference to FIG. FIG. 14 is a sequence diagram of the second calibration process.

  As illustrated in FIG. 14, in step S <b> 1401, the operator 1000 inputs an activation instruction for activating the second calibration unit 912 to the information processing apparatus 370.

  In response to the activation instruction being input by the operator 1000, in step S1402, the second calibration unit 912 is activated, and the display unit 405 of the information processing device 370 is subject to the second calibration process (projector). ) Is displayed for the operator 1000 to select.

  In step S1403, the operator 1000 selects, from the selection screen displayed on the display unit 405, the window glass on which the target (projector) for executing the second calibration process is arranged.

  In response to the window glass being selected by the operator 1000, the second calibration unit 912 identifies the motorized screen disposed at a position corresponding to the selected window glass. In step S1404, the second calibration unit 912 transmits a screen OFF instruction to the identified electric screen.

  The example in FIG. 14 shows a case where the window glass 1128 with the window ID = “W703” is selected and the screen OFF instruction is transmitted to the corresponding electric screen 330_28, as in the first calibration process. .

  In response to the screen OFF instruction transmitted from the second calibration unit 912, the electric screen 330_28 is turned off in step S1405.

  In step S1406, the second calibration unit 912 transmits a lamp ON instruction to the projector 310_28a (projector ID = “PJ703A”) disposed at the position corresponding to the window glass 1128 with the window ID = “W703”. Accordingly, the lamp of the projector 310_28a is turned on.

  In step S1407, the operator 1000 inputs a projection instruction for projecting a white image to the projector 310_28a to the information processing apparatus 370.

  In step S1408, the second calibration unit 912 transmits a white image projection instruction to the projector 310_28a in response to the white image projection instruction from the operator 1000.

  In step S1409, the projector 310_28a performs all white projection according to the white image projection instruction transmitted from the second calibration unit 912.

  In step S1410, the operator 1000 inputs, to the color luminance meter 382, a measurement instruction for measuring the color temperature of the window glass projected by the projector 310_28a.

  In step S1411, the color luminance meter 382 measures the color temperature of the window glass 1128 projected all white. In step S1412, the operator 1000 inputs the measured color temperature as a measurement result to the information processing device 370.

  In step S1413, the second calibration unit 912 performs a conversion process for converting the color temperature input by the operator 1000 into an RGB level.

  In step S1414, the second calibration unit 912 transmits the RGB level calculated by performing the conversion process to the projector 310_28a.

  In step S1415, the projector 310_28a sets the RGB level transmitted from the second calibration unit 912.

  FIG. 15 is a diagram illustrating an example of a white image projected during the second calibration process. As shown in FIG. 15, the projector 310_28a projects a white image onto the window glass 1128 when the electric screen 330_28 is in the OFF state. The operator 1000 measures the color temperature of the window glass 1128 using the color luminance meter 382 and inputs the measurement result to the information processing device 370. Thereby, the information processing device 370 calculates the RGB level, and the projector 310_28a is set with the RGB level corresponding to the measurement result.

  Returning to the description of FIG. In step S1416, the operator 1000 inputs an instruction to end the second calibration process to the information processing apparatus 370. In response to the end instruction input by the operator 1000, the second calibration unit 912 transmits a screen ON instruction to the electric screen 330_28 in step S1417.

  In response to the screen ON instruction transmitted from the second calibration unit 912, the electric screen 330_28 is turned on in step S1418.

<8. Details of image processing>
Next, details of the image processing (step S802) in the image projection system 300 will be described.

(1) Functional Configuration of Image Processing Unit First, a functional configuration of the image processing unit 372 of the information processing apparatus 370 that executes image processing will be described. FIG. 16 is a diagram illustrating a functional configuration of the image processing unit of the information processing apparatus.

  As illustrated in FIG. 16, the image processing unit 372 includes a target information acquisition unit 1611, an image information acquisition unit 1612, a generation time calculation unit 1613, an inversion unit 1614, and a decoding unit 1615. The image processing unit 372 includes a first dividing unit 1616, a correcting unit 1617, a second dividing unit 1618, an encoding unit 1619, and a transmitting unit 1620.

  The target information acquisition unit 1611 reads the signage target information 500 from the signage target information management unit 375 and notifies the generation time calculation unit 1613 and the first division unit 1616.

  The image information acquisition unit 1612 reads attribute information from the header portion of the moving image provided by the advertiser and stored in the image information management unit 376 and notifies the generation time calculation unit 1613 of the attribute information. The image information acquisition unit 1612 reads a moving image provided from the advertiser and stored in the image information management unit 376 and notifies the reversing unit 1614 of the moving image.

  The generation time calculation unit 1613 is an example of a calculation unit. The generation time calculation unit 1613 uses the moving image attribute information notified from the image information acquisition unit 1612 and the signage target information 500 notified from the target information acquisition unit 1611 to generate a projection moving image group. The time is calculated and displayed on the display unit 405.

  The inversion unit 1614 inverts the left and right of the moving image notified from the image information acquisition unit 1612. In the image projection system 300, a transparent or translucent light transmission surface (window glass and motorized screen) is projected from the inside, and the projection result is visually recognized from the outside. For this reason, it is necessary to reverse the left and right in advance. As described above, the reversing unit 1614 performs the reversing process, so that it is possible to avoid a situation in which a moving image whose left and right are reversed from the moving image intended by the advertiser is visually recognized. The reversing unit 1614 notifies the decoded moving image to the decoding unit 1615.

  The decoding unit 1615 extracts a still image group by decoding the moving image determined to be left and right and decomposing the moving image into frame units. The decoding unit 1615 sequentially notifies each first still image included in the extracted still image group to the first dividing unit 1616.

  The first division unit 1616 performs a first division process of dividing each still image sequentially notified from the decoding unit 1615 into a plurality of still images based on the signage target information 500 notified from the target information acquisition unit 1611. . Thereby, the 1st division part 1616 can generate | occur | produce the division | segmentation still image (division image) according to the position of the window glass, and the size of the window glass.

  The first dividing unit 1616 divides a plurality of divided still images acquired by performing the first dividing process on all the still images included in the still image group for each divided still image of the same window glass. Thus, a plurality of divided still image groups corresponding to the number of window glasses are generated. The first division unit 1616 stores the generated plurality of divided still image groups in the image information management unit 376.

  Further, the first dividing unit 1616 attaches a divided still image group ID to each of the generated plurality of divided still image groups, and stores them in the image information 600 in association with the window IDs.

  Furthermore, the first dividing unit 1616 notifies each of the generated divided still image groups to the correcting unit 1617 in association with the window ID.

  The correcting unit 1617 corrects each of the plurality of divided still image groups notified from the first dividing unit 1616 using a correction parameter corresponding to the window ID. In addition, the correction unit 1617 notifies the second division unit 1618 of the plurality of divided still image groups after correction.

  The second dividing unit 1618 divides each of the corrected divided still image groups notified from the correcting unit 1617 into projector units. Since the plurality of divided still image groups after correction notified by the correction unit 1617 are generated for each window glass, the second division unit 1618 divides them into projector units.

  The encoding unit 1619 encodes a plurality of corrected still image groups divided in units of projectors in units of projectors, and generates a plurality of projection moving images corresponding to the number of projectors. The encoding unit 1619 stores the projection moving image ID for identifying the generated plurality of projection moving images and the generation date and time in the image information 600 in association with the projector ID.

  The transmission unit 1620 is an example of a transmission unit, and transmits a plurality of projection moving images generated by the encoding unit 1619 to the corresponding projectors. In addition, since the transmission unit 1620 transmits each projection moving image to each corresponding projector in advance, the signage control unit 373 only needs to transmit a projection start instruction to each projector at the start of projection. It will be. Accordingly, it is possible to reduce the possibility of delay in projecting the projection moving image, as compared with the configuration in which each projection moving image is transmitted to each projector at the start of projection.

  Note that the transmission unit 1620 determines whether or not it is a transmittable time zone when transmitting each projection moving image to each projector. The time zone in which the projection moving image can be transmitted is a time zone excluding the time zone during which the projection moving image is projected by each projector, and the schedule information 710 to 730 is referred to for the time zone. Thus, it is assumed that the operator 1000 has set in advance.

  The transmission unit 1620 transmits each projection moving image to each projector when determining that it is a time zone in which the projection moving image can be transmitted. On the other hand, when it is determined that it is not the time zone in which the projection moving image can be transmitted, the projection moving image is transmitted to each projector after waiting until the projection moving image can be transmitted. In a time zone in which each projector is projecting another projection moving image, each projector performs processing such as processing for reading another projection moving image from the external memory, decoding processing, and the like. For this reason, if the transmission unit 1620 transmits the projection moving image, the load on each projector increases. As a result, in each projector, a delay occurs in the process of reading another moving image for projection from the external memory, the decoding process, etc., and in the projection of the other moving image for projection, there are problems such as missing frames and screen distortion. Will occur. Therefore, the transmission unit 1620 transmits each projection moving image by setting a time zone during which no other projection moving image is projected as a “time zone during which the projection moving image can be transmitted”.

(2) Specific Example of Image Processing Next, a specific example of image processing (step S802) by the image processing unit 372 will be described. FIG. 17 is a diagram illustrating a specific example of image processing. Here, image processing for generating “content 100” will be described.

  In FIG. 17, a moving image 1710 is a moving image with a moving image ID = “C100” provided by an advertiser, and is stored in the image information management unit 376 in the MPEG4 format. When the image information acquisition unit 1612 reads out the moving image 1710 and notifies the reversing unit 1614, the reversing unit 1614 inverts the left and right of the moving image 1710 and generates a reversed moving image 1711.

  The inverted moving image 1711 is decoded by the decoding unit 1615 and extracted as a still image group including a plurality of still images. Further, for the extracted still image group, the first dividing unit 1616 performs a first dividing process based on the signage target information 500 to generate a plurality of divided still image groups.

  A plurality of divided still image groups (divided still image groups 1720_1, 1720_2,... 1720_30) are each assigned a divided still image group ID (C201, C202,... C705). A plurality of divided still image groups assigned with divided still image group IDs are stored in the image information management unit 376. Further, the divided still image group ID is stored in the image information 600 in association with the window ID.

  In addition, the correction unit 1617 corrects the plurality of divided still image groups 1720_1, 1720_2,..., 1720_30 using corresponding correction parameters. For example, the correction unit 1617 corrects the divided still image group 1720_1 using the correction parameter 1730_1 (correction parameter ID = “P201”). The correction unit 1617 corrects the divided still image group 1720_2 using the correction parameter 1730_2 (correction parameter ID = “P202”). Further, the correction unit 1617 corrects the divided still image group 1720_30 using the correction parameter 1730_30 (correction parameter ID = “P705”).

  The corrected divided still image groups 1720_1, 1720_2,... 1720_30 corrected by the correction parameters are each divided into projector units by the second dividing unit 1618. For example, the corrected divided still image group 1720_1 is divided into a divided still image group 1740_1a for the projector 310_1a and a divided still image group 1740_1b for the projector 310_1b.

  Similarly, the corrected divided still image group 1720_30 is divided into a divided still image group 1740_30a for the projector 310_30a and a divided still image group 1740_30b for the projector 310_30b.

  The encoding unit 1619 performs an encoding process on the corrected divided still image groups 1740_1a to 1740_30b divided by the second dividing unit 1618 in units of projectors. As a result, the encoding unit 1619 generates a moving image for projection in the MPEG4 format.

  For example, the encoding unit 1619 encodes the divided still image group 1740_1a for the projector 310_1a to generate the projection moving image 1750_1a. The encoding unit 1619 generates a projection moving image 1750_1b by encoding the divided still image group 1740_1b for the projector 310_1b. Further, the encoding unit 1619 encodes the divided still image group 1740_30a for the projector 310_30a and the divided still image group 1740_30b for the projector 310_30b to generate projection moving images 1750_30a and 1750_30b. As a result, “content 100” is generated.

  The encoding unit 1619 associates the generated projection moving images 1750_1a to 1750_30b with the projection moving image IDs (M201A, M201B,... M705A, M705B) and the generation date and time with the projector ID. Stored in information 600.

  In addition, the transmission unit 1620 transmits the generated plurality of projection moving images 1750_1a to 1750_30b to the corresponding projector. For example, the transmission unit 1620 transmits the projection moving image 1750_1a to the projector 310_1a. In addition, the projection moving image 1750_1b is transmitted to the projector 310_1b. Further, the transmission unit 1620 transmits the projection moving image 1750_30a to the projector 310_30a, and the projection moving image 1750_30b to the projector 310_30b.

(3) Flow of Image Processing Next, the flow of image processing (step S802) will be described using the flowcharts of FIGS. 18 and 19 are first and second flowcharts showing the flow of image processing.

  In step S <b> 1801, the image information acquisition unit 1612 acquires a moving image from the image information management unit 376.

  In step S1802, the target information acquisition unit 1611 acquires the signage target information 500 from the signage target information management unit 375.

  In step S1803, the generation time calculation unit 1613 calculates the time required to generate the projection moving image group using the moving image attribute information and the signage target information, and displays the time on the display unit 405. I do. Details of the flowchart of the generation time calculation process (step S1803) will be described later.

  In step S1804, the reversing unit 1614 performs left / right reversal processing on the moving image acquired in step S1801.

  In step S1805, the decoding unit 1615 extracts a still image group by decoding the inverted moving image.

  In step S1806, the first dividing unit 1616 substitutes 1 for the still image counter n.

  In step S1807, the first division unit 1616 performs a first division process on the nth still image. Details of the flowchart of the first division process (step S1807) will be described later.

  In step S1808, the first division unit 1616 determines whether or not the first division process has been performed for all still images. If it is determined in step S1808 that there is a still image that has not been subjected to the first division processing (in the case of No in step S1808), the process proceeds to step S1809. In step S1809, the first dividing unit 1616 increments the still image counter n, and then returns to step S1807.

  On the other hand, if it is determined in step S1808 that the first division process has been performed for all still images, the process advances to step S1810.

  In step S1810, the first dividing unit 1616 generates divided still image groups for the number of window glasses by dividing the plurality of divided still images generated for each still image into divided still images corresponding to the same window glass. And stored in the image information management unit 376. Also, the first dividing unit 1616 attaches a divided still image group ID to each generated divided still image group, and stores it in the image information 600 in association with the window ID.

  In step S1901 in FIG. 19, the correction unit 1617 substitutes 1 for the divided still image group counter m.

  In step S1902, the correction unit 1617 corrects the mth divided still image group among the divided still image groups generated in step S1810 using the corresponding correction parameter.

  In step S1903, the second dividing unit 1618 performs the second dividing process on the m-th divided still image group after correction.

  In step S1904, the second division unit 1618 determines whether correction processing and second division processing have been performed on all the divided still image groups generated in step S1810.

  If it is determined in step S1904 that there is a divided still image group for which the correction process and the second division process are not performed (No in step S1904), the process proceeds to step S1905.

  In step S1905, the correction unit 1617 increments the divided still image group counter m and returns to step S1902.

  On the other hand, if it is determined in step S1904 that correction processing and second division processing have been performed for all divided still image groups (Yes in step S1904), the process proceeds to step S1906.

  In step S1906, the encoding unit 1619 encodes the divided still image group subjected to the second division processing in units of projectors, thereby generating projection moving image groups (contents) corresponding to the number of projectors. Also, the encoding unit 1619 stores the generation date and time in the image information 600 for each projection moving image included in the generated projection moving image group (content).

  In step S1907, the transmission unit 1620 transmits each projection moving image included in the generated projection moving image group to each corresponding projector. Details of the flowchart of the transmission process (step S1907) will be described later.

(4) Details of Generation Time Calculation Process (Step S1803) Next, details of the generation time calculation process (step S1803) will be described with reference to FIG. FIG. 20 is a flowchart showing the flow of the generation time calculation process.

  In step S2001, the generation time calculation unit 1613 acquires the attribute information of the moving image notified from the image information acquisition unit 1612. The generation time calculation unit 1613 acquires the frame rate, resolution, image type, and length as the attribute information of the moving image.

  In step S2002, the generation time calculation unit 1613 acquires the signage target information 500 notified from the target information acquisition unit 1611, and extracts the horizontal size and vertical size of the window information as layout information.

  In step S2003, the generation time calculation unit 1613 reads a preset estimation coefficient.

  In step S2004, the generation time calculation unit 1613 calculates the generation time of the projection moving image per window glass using the moving image attribute information, the window information, and the estimation coefficient.

  In step S2005, the generation time calculation unit 1613 identifies the number of window glasses as layout information based on the window information included in the signage target information 500 notified from the target information acquisition unit 1611.

  In step S2006, the generation time calculation unit 1613 calculates the generation time of the projection moving image group (contents) by multiplying the generation time of the projection moving image per window glass by the number of window glasses. That is, the generation time calculation unit 1613 uses the attribute information (frame rate, resolution, image type, length) of the moving image and the layout information (number of windows, horizontal size, vertical size) for projection. The generation time of a moving image group (content) is calculated.

  In step S2007, the generation time calculation unit 1613 displays the calculated generation time of the moving image group for projection on the display unit 405. Also, the generation time calculation unit 1613 calculates the generation completion time when the generation of the projection moving image group is completed by adding the calculated generation time of the moving image group for projection to the current time, and displays it on the display unit 405. indicate.

(5) Details of First Division Processing (Step S1806) Next, details of the first division processing (step S1806) will be described using FIG. 21 and FIG. FIG. 21 is a flowchart showing the flow of the first division process. FIG. 22 is a diagram illustrating an example of the first division process.

  In step S2101, the first dividing unit 1616 reads the nth still image. In FIG. 22, the still image 2200 is assumed to be the nth still image read by the first dividing unit 1616.

  In step S2102, the first dividing unit 1616 substitutes “2” for the floor counter f.

  In step S2103, the first dividing unit 1616 substitutes “1” for the window counter g that counts the number of window glasses per floor.

In step S2104, the first dividing unit 1616 reads the “position”, “horizontal size”, and “vertical size” of the window ID = “Wf0g” from the signage target information 500. Here, since “2” is assigned to f and “1” is assigned to g, the position of window ID = “W201” ((0, 0)), horizontal size (x ₁₂ ), vertical size ( y ₁₂ ) is read out.

  In step S2105, the first dividing unit 1616 converts the position, horizontal size, and vertical size read in step S2104 into pixels on the still image 2200 according to the comparison between the still image 2200 and the predetermined area 510.

  As shown in FIG. 22, in the present embodiment, the still image 2200 is assumed to be composed of 4000 pixels horizontally and 8000 pixels vertically. In this case, the pixel on the still image 2200 corresponding to the position = “(0, 0)” is the pixel at the position = “(0, 0)”.

Further, the pixel on the still image 2200 corresponding to the horizontal size (x ₁₂ ) is a pixel calculated by (x ₁₂ / x ₅₂ ) × 4000. Further, the pixel on the still image 2200 corresponding to the vertical size (y ₁₂ ) is a pixel calculated by (y ₁₂ / y ₆₂ ) × 8000.

  In step S2106, the first dividing unit 1616 cuts out the rectangular area 2201 specified based on the pixel calculated in step S2105 from the still image 2200, and generates a divided still image.

  In step S2107, the first division unit 1616 determines whether or not the first division process has been performed for all the window glasses on the f floor. If it is determined in step S2107 that there is a window glass that has not been subjected to the first division processing (in the case of No in step S2107), the process proceeds to step S2108.

  In step S2108, the first dividing unit 1616 increments the window counter g, and then returns to step S2104. As a result, “2” is substituted for g.

In step S <b> 2104, the first dividing unit 1616 determines, based on the signage target information 500, the position of window ID = “W202” ((x ₂₁ , 0)), the horizontal size (x ₂₂ −x ₂₁ ), and the vertical size (y ₁₂ ). Is read.

  In step S2105, the first dividing unit 1616 converts the position, horizontal size, and vertical size read in step S2104 into pixels on the still image 2200.

As shown in FIG. 22, the pixel on the still image 2200 corresponding to the position ((x ₂₁ , 0)) is a pixel calculated by (x ₂₁ / x ₅₂ ) × 4000. Further, the pixel on the still image 2200 corresponding to the horizontal size (x ₂₂ −x ₂₁ ) is a pixel calculated by (x ₂₂ / x ₅₂ ) × 4000. Further, the pixel on the still image 2200 corresponding to the vertical size (y ₁₂ ) is a pixel calculated by (y ₁₂ / y ₆₂ ) × 8000.

  In step S2106, the first dividing unit 1616 cuts out the rectangular area 2202 specified based on the pixel calculated in step S2105 from the still image 2200, and generates a divided still image.

  In step S2107, the first division unit 1616 determines whether or not the first division process has been performed for all the window glasses on the f floor. If it is determined in step S2107 that there is a window glass that has not been subjected to the first division processing (in the case of No in step S2107), the process proceeds to step S2108. Thereafter, the processing in steps S2104 to S2106 is repeated until the rectangular area 2205 is cut out in step S2106.

  If it is determined in step S2107 that the first division processing has been performed for all the windowpanes on the f floor (in the case of Yes in step S2107), the process proceeds to step S2109.

  In step S2109, the first division unit 1616 determines whether or not the first division process has been performed for all floors. If it is determined in step S2109 that there is a floor that has not been subjected to the first division process (in the case of No in step S2109), the process proceeds to step S2110.

  In step S2110, the first dividing unit 1616 increments the floor counter f, and then returns to step S2103. Thereafter, the processing in steps S2103 to S2107 is repeated until the rectangular area 2230 is cut out at the floor counter f = 7.

  If it is determined in step S2109 that the first division process has been performed for all floors (in the case of Yes in step S2109), the process returns to step S1807 in FIG.

(6) Details of Transmission Processing (Step S1907) Next, details of the transmission processing (step S1907) will be described with reference to FIG. FIG. 23 is a flowchart showing the flow of transmission processing.

  As illustrated in FIG. 23A, in step S2301, the transmission unit 1620 acquires the current time.

  In step S2302, the transmission unit 1620 acquires a time zone during which the projection moving image can be transmitted to the projector. FIG. 23B is a diagram illustrating an example of a preset time zone as a time zone during which the projection moving image can be transmitted. The example of FIG. 23B is set based on the schedule information 710 to 730 of FIG. According to the schedule information 710 to 730 in FIG. 7, the projection moving image group of “content 100” is projected from 18:00 to 19:00. In addition, projection of the moving image group for projection of “content 101” or “content 102” is performed from 20:00 to 21:30. Therefore, the operator 1000 determines that the digital signage execution time is from 17:00 to 22:00, and the time period during which the moving image for projection can be transmitted is outside the digital signage execution time of 6 o'clock. The time zone is set from 00 minutes to 15:00.

  In step S2303, the transmission unit 1620 determines whether or not the current time is a transmittable time zone. When the current time is not a time zone from 6:00 to 15:00, it is determined that it is not a time zone in which transmission is possible (No in step S2303). In this case, the process waits until the current time is within a transmittable time zone.

  On the other hand, if it is determined in step S2303 that the current time is in a transmittable time zone (Yes in step S2303), the process proceeds to step S2304. In step S2304, the transmission unit 1620 transmits each projection moving image to each projector. Each projector that has received each projection moving image transmitted by the transmission unit 1620 stores the received projection moving image in an external memory. When the storage in the external memory is completed, each projector transmits a storage completion notification to the transmission unit 1620.

  In step S2305, the transmission unit 1620 determines whether a storage completion notification has been received from each projector. If it is determined in step S2305 that there is a projector that has not received the storage completion notification (No in step S2305), the process waits until a storage completion notification is received.

  On the other hand, if it is determined in step S2305 that a storage completion notification has been received (YES in step S2305), the process advances to step S2306. In step S2306, the transmission unit 1620 displays a message indicating that the storage of the projection moving image is completed on the display unit 405.

<9. Details of signage control processing>
Next, details of the signage control process (step S803) in the image projection system 300 will be described.

(1) Functional Configuration of Signage Control Unit First, a functional configuration of the signage control unit 373 of the information processing apparatus 370 that executes the signage control process will be described. FIG. 24 is a diagram illustrating a functional configuration of a signage control unit of the information processing apparatus.

  As illustrated in FIG. 24, the signage control unit 373 includes a synchronization unit 2401, a start control unit 2402, and an end control unit 2403.

  The synchronization unit 2401 outputs time information. The synchronization unit 2401 synchronizes the time between the projectors 310_1a to 310_30b and the information processing device 370. Specifically, after receiving time information from the time server 360 and correcting the time information to be output, the corrected time information is transmitted to the projectors 310_1a to 310_30b. When the projectors 310_1a to 310_30b receive the time information from the synchronization unit 2401, the projectors 310_1a to 310_30b correct the time information managed internally. Thereby, the synchronization unit 2401 can synchronize the time of the projectors 310_1a to 310_30b and the time of the information processing device 370 based on accurate time information.

  The start control unit 2402 reads the schedule information stored in the schedule information management unit 377 and identifies the projection start time. In addition, the start control unit 2402 transmits an instruction regarding the operation at the start of projection to each signage device based on the identified projection start time.

  The end control unit 2403 reads the schedule information stored in the schedule information management unit 377 and identifies the projection end time. Further, the end control unit 2403 transmits an instruction regarding the operation at the end of projection to each signage device based on the identified projection end time.

(2) Flow of Signage Control Processing Next, the flow of signage control processing (step S803) by the signage control unit 373 will be described. FIG. 25 is a flowchart showing the flow of signage control processing. When the image processing (step S802) by the image processing unit 372 is completed, the signage control process shown in FIG. 25 can be executed. It is assumed that the schedule information management unit 377 already stores schedule information 710 to 730 at the start of the signage control process.

  In step S2501, the start control unit 2402 reads one schedule information (for example, schedule information 710) stored in the schedule information management unit 377, and identifies the projection start time.

  In step S2502, the start control unit 2402 transmits a lamp ON instruction to the projectors 310_1a to 310_30b at a timing according to the identified projection start time. Thereby, each lamp of projector 310_1a-310_30b will be in an ON state.

  In step S2503, the synchronization unit 2401 receives time information from the time server 360, corrects the time information managed in the information processing device 370, and transmits the corrected time information to the projectors 310_1a to 310_30b. To do.

  In step S2504, the start control unit 2402 transmits a projection start instruction to the projectors 310_1a to 310_30b at a timing according to the identified projection start time. Thereby, in the projectors 310_1a to 310_30b, a process for starting the projection of each projection moving image is performed.

  In step S2505, the start control unit 2402 transmits an electrical decoration OFF instruction to the electrical decoration devices 140_1 to 140_6 at a timing according to the identified projection start time. Thereby, the illumination devices 140_1 to 140_6 are turned off.

  In step S2506, the start control unit 2402 transmits a screen ON instruction to the electric screens 330_1 to 330_30 at a timing according to the identified projection start time. Thereby, each of the electric screens 330_1 to 330_30 is turned on, and the light transmission surface is translucent. Through the above processing, digital signage corresponding to one schedule information is started.

  When digital signage is started, in step S2507, the end control unit 2403 reads one piece of schedule information (for example, schedule information 710) stored in the schedule information management unit 377. Further, the end control unit 2403 identifies the projection end time based on the read schedule information, and determines whether or not the current time has approached the projection end time.

  If it is determined in step S2507 that the projection end time has not been approached (No in step S2507), the process waits until it is determined that the projection end time has been approached.

  On the other hand, if it is determined in step S2507 that the projection end time has been approached (Yes in step S2507), the process proceeds to step S2508.

  In step S2508, the end control unit 2403 transmits a projection end instruction to the projectors 310_1a to 310_30b at a timing corresponding to the identified projection end time. Thereby, the projectors 310_1a to 310_30b end the projection of the projection moving images.

  In step S2509, the end control unit 2403 transmits a screen OFF instruction to the electric screens 330_1 to 330_30 at a timing according to the identified projection end time. Thereby, each of the electric screens 330_1 to 330_30 is turned off, and the light transmission surface is in a transparent state.

  In step S2510, the end control unit 2403 transmits an electrical decoration ON instruction to the electrical decoration devices 140_1 to 140_6 at a timing according to the identified projection end time. Thereby, the illumination devices 140_1 to 140_6 are turned on.

  In step S2511, the end control unit 2403 transmits a lamp OFF instruction to the projectors 310_1a to 310_30b at a timing corresponding to the identified projection end time. Accordingly, the lamps of the projectors 310_1a to 310_30b are turned off. Through the above processing, digital signage corresponding to one schedule information is completed.

  In step S2512, the start control unit 2402 determines whether or not the processing from step S2501 to step S2511 has been executed for all schedule information stored in the schedule information management unit 377. If it is determined in step S2512 that there is schedule information for which the processing from step S2501 to step S2511 has not been executed (No in step S2512), the process returns to step S2501.

  On the other hand, when it is determined in step S2512 that the processes from step S2501 to step S2511 have been executed for all schedule information (in the case of Yes in step S2512), the signage control process ends.

<10. Summary>
As is clear from the above description, in the image projection system 300 according to the present embodiment,
-Reverse the moving image provided by the advertiser. Further, based on the position and size of a plurality of window glasses included in a predetermined area on the outer surface of the building, a still image of each frame extracted from the inverted moving image is divided, and a plurality of still images are divided from each still image. A divided still image is generated.
Use the divided still images of each frame corresponding to the same window glass to generate divided still image groups for the number of window glasses and store them in the image information management unit.
・ A calibration process is performed using a projector arranged at a position corresponding to each of a plurality of window glasses included in a predetermined area on the outer surface of the building, and a divided still image is generated using a correction parameter generated based on the result of the calibration process. Correct the group.
The corrected divided still image group is further divided according to the number of projectors arranged at a position corresponding to one window glass, and encoded to generate a projection moving image group for each projector.
Projecting each of the projection moving images included in the generated projection moving image group onto each of the electric screens corresponding to the plurality of window glasses at a timing according to the schedule information via the corresponding projector.

  Thereby, digital signage combining a plurality of light transmission surfaces can be realized.

In the image projection system 300 according to the present embodiment,
・ At the time of generating a moving image group for projection, the time required for generating the moving image group for projection is calculated and displayed using the attribute information of the moving image provided by the advertiser and the layout information of a plurality of window glasses. To do.

  Thereby, in digital signage combining a plurality of light transmission surfaces, it is possible to accurately calculate the time required to generate a moving image group for projection.

  As a result, the advertiser can examine in detail the start time with higher advertising effectiveness as the start time of digital signage.

[Second Embodiment]
In the first embodiment, the generation time calculation unit 1613 calculates the time required to generate the projection moving image group and the generation completion time. However, if the generation completion time calculated by the generation time calculation unit 1613 is not a time zone during which the projection moving image can be transmitted, the transmission unit 1620 waits until the transmission time zone is reached. In this case, the time when the digital signage can actually start is shifted further after the generation completion time.

  Therefore, the generation time calculation unit 1613 according to the present embodiment calculates the transmission completion time at which the transmission of each projection moving image is completed in addition to the generation completion time, and displays it on the display unit 405.

  FIG. 26 is a second flowchart showing the flow of the generation time calculation process. The difference from the first flowchart of FIG. 20 is steps S2601 to S2603.

  In step S2601, the generation time calculation unit 1613 determines whether or not the calculated generation completion time is a time zone in which the projection moving image can be transmitted. If it is determined in step S2601 that it is a transmittable time zone (Yes in step S2601), the process proceeds to step S2602.

  In step S2602, the generation time calculation unit 1613 adds the time required for transmission to the calculated generation completion time, and displays the transmission completion time on the display unit 405.

  On the other hand, if it is determined in step S2601 that it is not a time zone in which transmission is possible (No in step S2601), the process proceeds to step S2603.

  In step S2603, the generation time calculation unit 1613 identifies the time zone closest to the calculated generation completion time among the time zones in which the projection video image can be transmitted, and transmits the projection video image in the identified time zone. In this case, the transmission completion time is calculated. The generation time calculation unit 1613 displays the calculated transmission completion time on the display unit 405.

  As described above, by calculating and displaying the transmission completion time in consideration of the time zone during which the projection moving image can be transmitted, according to the present embodiment, the time when the digital signage can actually be started can be accurately determined. Can be calculated.

[Other Embodiments]
In the first embodiment, the time required for generating the projection moving image group and the generation completion time are calculated and displayed. However, the function of the generation time calculation unit 1613 is not limited to this, and a function of outputting a warning based on the calculated generation time or generation completion time may be added.

  In the first embodiment, one time zone is set as a time zone in which the projection moving image can be transmitted based on the schedule information 710 to 730. However, the time zone in which the projection moving image can be transmitted is not limited to one time zone, and may be set for each day of the week based on the schedule information 710 to 730.

  In the first embodiment, the operator 1000 sets a time zone in which the projection moving image can be transmitted based on the schedule information 710 to 730. However, the time zone in which the projection moving image can be transmitted is not limited to the configuration set by the operator 1000, and may be a configuration automatically set by the transmission unit 1620 based on the schedule information 710 to 730.

  In the first embodiment, the information processing device 370 has been described as including the calibration unit 371, the image processing unit 372, and the signage control unit 373. However, some of these functions are performed in other signage devices. It may be realized.

  Moreover, although the said 1st Embodiment demonstrated the window glass contained in the predetermined area | region of the outer surface of the building 110 as a projection object, a projection object is not limited to a window glass, Even if it is another light transmissive surface Good. Further, the light transmission surface is not limited to that included in a predetermined region on the outer surface of the building 110, and may be a light transmission surface included in a predetermined region inside the building 110, or may be attached to an object other than the building. It may be a light transmission surface.

  Moreover, in the said 1st Embodiment, although the signage apparatus demonstrated as what points out a projector (projection apparatus), a motorized screen, and an electrical decoration apparatus, a signage apparatus is not limited to this. For example, there are devices already installed in the building 110, such as a lighting device inside the building 110, a lighting device that illuminates a wall surface or a signboard of the building 110 from the outside of the building 110, and an object or a signboard installed in the building 110. , May be included in the signage device.

  It should be noted that the present invention is not limited to the configuration shown here, such as a combination with other elements in the configuration described in the above embodiment. These points can be changed without departing from the spirit of the present invention, and can be appropriately determined according to the application form.

110: building 120: window glass group 130: projection moving image group 310_1a-310_30b: projector 320_1a-320_30b: external memory 330_1-330_30: electric screen 340: control device 360: time server 370: information processing device 371: calibration unit 372 : Image processing unit 373: Signage control unit 375: Signage target information management unit 376: Image information management unit 377: Schedule information management unit 500: Signage target information 510: Predetermined area 600: Image information 710 to 730: Schedule information 1611: Target Information acquisition unit 1612: Image information acquisition unit 1613: Generation time calculation unit 1614: Inversion unit 1615: Decoding unit 1616: First division unit 1617: Correction unit 1618: Second division unit 1619: Encoding unit 16 20: Transmitter

JP-A-2015-26992 JP-A-2006-85435

Claims (8)

A dividing unit that generates a plurality of divided images by dividing one image according to the positions and sizes of the plurality of surfaces included in the predetermined area;
Control means for controlling the plurality of divided images to be projected onto each of the projection planes corresponding to the plurality of planes via a projection device corresponding to each of the plurality of planes;
The dividing means further includes:
An image projection system comprising: a calculation unit that calculates time required to generate the plurality of divided images using the attribute information of the image and the layout information of the plurality of surfaces. The control means further includes
The image projection system according to claim 1, further comprising: a transmission unit configured to transmit the plurality of divided images to the plurality of projection apparatuses in a preset time zone.   The image projection system according to claim 2, wherein the preset time zone is a time zone excluding a time zone during which the projection is performed by the projection device.   The image projection system according to any one of claims 1 to 3, wherein the layout information of the plurality of surfaces includes the number and size of the surfaces. The calculating means includes
By adding the time required for generating the plurality of divided images to the current time, a generation completion time for completing the generation of the plurality of divided images is calculated,
Based on the calculated generation completion time and the preset time zone, further calculating a transmission completion time when transmission of the plurality of divided images to the plurality of projection devices by the transmission unit is completed. The image projection system according to claim 3. A dividing unit that generates a plurality of divided images by dividing one image according to the positions and sizes of the plurality of surfaces included in the predetermined area;
Control means for controlling the plurality of divided images to be projected onto each of the projection planes corresponding to the plurality of planes via a projection device corresponding to each of the plurality of planes;
The dividing means further includes:
An information processing apparatus comprising: a calculation unit configured to calculate time required to generate the plurality of divided images using the attribute information of the image and the layout information of the plurality of surfaces. A division step of generating a plurality of divided images by dividing one image according to the positions and sizes of the plurality of surfaces included in the predetermined region;
A control step of controlling the plurality of divided images to be projected onto each of the projection planes corresponding to the plurality of planes via a projection device corresponding to each of the plurality of planes;
The dividing step further includes
An image projecting method comprising: calculating a time required to generate the plurality of divided images using the attribute information of the image and the layout information of the plurality of surfaces. A division step of generating a plurality of divided images by dividing one image according to the positions and sizes of the plurality of surfaces included in the predetermined region;
A control program for causing a computer to execute a control process of projecting the plurality of divided images onto each of the projection planes corresponding to the plurality of planes via a projection device corresponding to each of the plurality of planes. There,
The dividing step further includes
A program comprising: a calculation step of calculating time required to generate the plurality of divided images using the attribute information of the image and the layout information of the plurality of surfaces.