JP2019152815A - Projection system and control method therefor, and program - Google Patents

Abstract

To provide a projection system that can maintain the image quality of a video projected on each of a plurality of screens to an image quality set for every screen.SOLUTION: A projection system comprises: a projection unit 21 that projects a video on each of a plurality of portable screens 4; an object detection unit 22 that detects the arrangement state of the portable screens 4 with respect to the projection unit 21; and a control unit 5 that controls the projection unit 21 according to a result of detection performed by the object detection unit 22 so that the image quality of the video projected on each of the portable screens 4 becomes close to an image quality set for every portable screen 4.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a projection system that projects an image on a screen, a control method thereof, and a program.

  Projectors can be used for various purposes such as presentations and movie viewing because they can display relatively large images with simple equipment using a screen.

  The projector is not limited to a screen fixed to a wall or the like, and can project an image on various objects. For example, the following patent document describes a projector device having a function of specifying a display object and its position based on an image captured by a camera, and a function of arbitrarily adjusting a projection direction in a projectable area. Has been. When the electronic paper is placed in the projectable area, the projector device specifies the electronic paper as a display object and specifies the position of the electronic paper in the projectable area. When the projector device specifies the electronic paper placed in the displayable area, the projector device projects a predetermined image associated with the electronic paper toward the surface of the electronic paper or the vicinity thereof.

Japanese Patent Laid-Open No. 2016-110545

  By the way, the image quality (brightness, etc.) of the image projected from the projector to the screen varies depending on the distance from the projector to the screen, the angle at which the projection light of the projector enters the screen, and the like. That is, the image quality of the image on the screen changes according to the position and orientation of the screen with respect to the projector. Therefore, when control is performed to project an image in an appropriate range on the screen according to the position and orientation of the screen, if the image quality is not taken into consideration, the image quality will change as the position and orientation of the screen change. It will change and give the user a sense of incongruity. Since the evaluation of the image quality of the video depends on the user's preference, when such image projection control is performed on a plurality of screens, it is desirable to be able to set the image quality according to the user's preference for each screen.

  Therefore, an object of the present disclosure is to provide a projection system capable of maintaining the image quality of an image projected on each of a plurality of screens at an image quality set for each screen, a control method thereof, and a program.

  A projection system according to a first aspect of the present disclosure includes a projection unit that projects an image on each of a plurality of screens, a detection unit that detects an arrangement state of each screen with respect to the projection unit, and an image quality of the image projected on each screen Has a control unit that controls the projection unit according to the detection result of the detection unit so that the image quality approaches the image quality set for each screen.

  According to the projection system according to the first aspect, the arrangement state of each screen with respect to the projection unit is detected, and the image quality of the image projected on each screen approaches the image quality set for each screen according to the detection result. The projection unit is controlled. Therefore, the image quality of the image projected on each screen is easily maintained at the image quality set for each screen.

  Suitably, a detection part may detect the position of each part of the object in the detection object area | region where the some screen is arrange | positioned. The control unit may acquire, for each of the plurality of screens, arrangement state information related to at least one of the position and orientation of the screen in the detection target region based on the detection result of the detection unit. Further, the control unit controls the projection unit according to the arrangement state information acquired for the one screen so that the image quality of the image projected on the one screen approaches the image quality set for the one screen. May be performed for each of the plurality of screens.

  According to this configuration, arrangement state information acquisition and projection control are performed for each of the plurality of screens. The arrangement state information is information regarding at least one of the position and orientation of the screen in the detection target area where a plurality of screens are arranged, and is acquired based on the result of detecting the position of each part of the object in the detection target area. In the projection control performed for one screen, projection is performed so that the image quality of the image projected on the one screen approaches the image quality set for the one screen according to the arrangement state information acquired for the one screen. Part is controlled. As a result, the image quality of the image projected on the one screen is easily maintained at the image quality set for the one screen.

  Preferably, the control unit may repeat the acquisition of the arrangement state information of each screen based on the detection result of the detection unit, and may repeat the projection control of each screen according to the arrangement state information.

  According to this configuration, when the position or orientation of each screen changes, the arrangement state information of each screen is acquired after the change, and projection control of each screen is performed according to the acquired arrangement state information. Therefore, even if the position or orientation of each screen changes, the image quality of the image projected on each screen is easily maintained at the image quality set for each screen.

  Preferably, the image quality set for each screen may include at least one of brightness, contrast, color strength, hue, sharpness, geometric distortion, shading, and color unevenness.

  Preferably, the control unit may be capable of inputting an image quality setting instruction for setting at least one of brightness, contrast, color density, hue, and sharpness for at least some of the plurality of screens. In addition, when an image quality setting instruction is input for one screen, the control unit, in the projection control of the one screen, brightness, contrast, color density, color tone, and color tone in the image quality projected on the one screen. The projection unit may be controlled according to the arrangement state information so that at least one of the sharpness approaches the image quality set by the image quality setting instruction.

  According to this configuration, it is possible to set at least one of brightness, contrast, color density, hue, and sharpness for at least some of the plurality of screens by an image quality setting instruction. When the image quality is set by the image quality setting instruction for one screen, at least one of brightness, contrast, color density, hue, and sharpness in the image quality of the image projected on the one screen is set by the image quality setting instruction. The projection unit is controlled according to the arrangement state information so that the image quality approaches. As a result, in the image projected on the one screen, at least one of brightness, contrast, color density, hue, and sharpness can be easily maintained at the image quality set by the image quality setting instruction.

  Preferably, the control unit may repeat the acquisition of the arrangement state information of each screen based on the detection result of the detection unit, and may repeat the projection control of each screen according to the arrangement state information. In addition, when the control unit inputs an image quality setting instruction for setting the image quality of the image projected on one screen, the projection unit changes the image quality of the image projected on the one screen according to the image quality setting instruction. In addition to changing the image quality setting, the first setting information related to the changed image quality setting and the second setting information that is the latest arrangement state information acquired for the one screen may be stored. Then, in the projection control of the one screen, the control unit responds to the latest arrangement state information acquired for the one screen and the first setting information and the second setting information stored when the image quality setting instruction is input. The projection unit may be controlled so that the image quality of the image projected on the one screen approaches the image quality when the image quality setting instruction is input.

  According to this configuration, when an image quality setting instruction for setting the image quality of an image projected on one screen is input, the image quality of the image projected on the one screen changes according to the input image quality setting instruction. In addition, the image quality setting in the projection unit is changed. In this case, the first setting information related to the changed image quality setting is stored, and the latest arrangement state information among the arrangement state information repeatedly obtained for the one screen is the second setting information. Remembered. In the projection control of the one screen that is repeatedly executed, the latest arrangement state information acquired for the one screen, and the first setting information and the second setting information stored when the image quality setting instruction is input. Accordingly, the projection unit is controlled so that the image quality of the image projected on the one screen approaches the image quality when the image quality setting instruction is input. Therefore, when the image quality setting instruction is input, an image having the image quality set by the image quality setting instruction is projected on the screen, so that the image quality set by the image quality setting instruction can be confirmed. Further, in the projection control, since the difference in the arrangement state compared with the time of inputting the image quality setting instruction can be understood based on the second setting information that is the arrangement state information at the time of inputting the image quality setting instruction and the latest arrangement state information. From this difference in the arrangement state, the correction of the image quality setting necessary to obtain the image quality approximate to the image quality at the time of inputting the image quality setting instruction is estimated.

  Suitably, a control part may input the image quality setting instruction | indication by a user's gesture based on the detection result of a detection part.

  According to this configuration, since the detection result of the detection unit is used for inputting an image quality setting instruction, the configuration is simplified as compared with the case where a sensor dedicated to gesture input or the like is used.

  Preferably, for each of the plurality of screens, the control unit may store information relating to image quality set for each screen and identification information assigned for each screen in association with each other.

  According to this configuration, it is possible to manage information regarding the image quality set for each screen based on the identification information.

  Suitably, a control part may acquire the identification information of each screen based on the detection result of a detection part.

  According to this configuration, since the detection result of the detection unit is used for acquiring the identification information of each screen, the configuration is simplified compared to the case where a dedicated sensor or the like for acquiring the identification information is used.

  Preferably, the projection system according to the first aspect may include an ambient light detection unit that detects ambient light intensity in an area where a plurality of screens are arranged. In the projection control of one screen, the control unit determines the image quality of the image projected on the one screen according to the arrangement state information acquired for the one screen and the detection result of the ambient light detection unit. The projection unit may be controlled so as to approach the image quality set for.

  According to this configuration, projection control for each screen is performed according to the detection result of the intensity of the ambient light in the area where the plurality of screens are arranged. Therefore, even when the intensity of ambient light changes, the image quality of the image projected on each screen is easily maintained at the image quality set for each screen.

  Preferably, the control unit may perform a filter process for smoothing a temporal change in the intensity of the ambient light detected by the ambient light detection unit. In the projection control, the control unit of the ambient light detection unit subjected to the filter process may perform The projection unit may be controlled according to the detection result.

  According to this configuration, it is easy to suppress a sudden change in the image quality of the video due to the projection control being performed according to the sudden change in the intensity of the ambient light.

  Suitably, the projection system concerning the 1st side may have an environment lighting part which illuminates the field where a plurality of screens are arranged. The control unit may control the illuminance of the environmental illumination unit according to the brightness of the video set as the image quality for at least some of the plurality of screens.

  According to this configuration, since the illuminance of the environment illumination unit is controlled according to the brightness of the video set as the image quality for at least some of the plurality of screens, the appropriate ambient light according to the brightness of the video is controlled. Strength is easily obtained.

  A second aspect of the present disclosure relates to a control method for a projection system including a projection unit that projects an image on each of a plurality of screens, and a detection unit that detects an arrangement state of each screen with respect to the projection unit. The control method of the projection system includes controlling the projection unit according to the detection result of the detection unit so that the image quality of the image projected on each screen approaches the image quality set for each screen.

  Preferably, the control method of the projection system according to the second aspect includes a screen in the detection target area based on a detection result of a detection unit that detects the position of each part of the object in the detection target area in which the plurality of screens are arranged. Acquisition of arrangement state information regarding at least one of the position and orientation of each of the plurality of screens, and the image quality of an image projected on the one screen in accordance with the arrangement state information acquired for the one screen. Performing projection control for controlling the projection unit so as to approach the image quality set for the screens for each of the plurality of screens.

  Preferably, in the projection system control method according to the second aspect, the acquisition of the arrangement state information of each screen based on the detection result of the detection unit and the projection control of each screen according to the arrangement state information are repeated. When the image quality setting instruction for setting the image quality of the image projected on one screen is input, the image quality in the projection unit is changed so that the image quality of the image projected on the one screen changes according to the image quality setting instruction. The first setting information related to the image quality setting after the change, and the second setting information which is the latest arrangement state information acquired for the one screen, and In the projection control, the latest arrangement state information acquired for the one screen and the first setting information and the second setting information stored when the image quality setting instruction is input. Flip and has a the quality of the projected image on the one screen to control the projection unit so as to approach the image quality at the time of input of the image quality setting instruction.

  The third aspect of the present disclosure relates to a program for causing a computer to execute the control method of the projection system according to the second aspect.

  According to the present disclosure, it is possible to provide a projection system that can maintain the image quality of an image projected on each of a plurality of screens at an image quality set for each screen, and a control method and program thereof.

FIG. 1A is a diagram showing an example of a projection system according to the present embodiment, and shows a projection system using a desktop screen. FIG. 1B is a diagram illustrating an example of a desktop screen. FIG. 2A is a diagram showing an example of a projection system according to the present embodiment, and shows a projection system using a portable screen. 2B to 2C are diagrams illustrating an example of a portable screen. FIG. 3 is a diagram showing an example of the configuration of the projection system according to the present embodiment. FIG. 4 is a diagram illustrating an example of the configuration of the multifunction projector. FIG. 5 is a diagram illustrating an example of the configuration of a desktop screen. FIG. 6 is a diagram illustrating an example of the configuration of a portable screen. FIG. 7 is a diagram illustrating an example of the configuration of the control device. FIG. 8 is a diagram for explaining that the projection state of the image on the screen is kept constant. 9A to 9D are diagrams for explaining a method of projecting an image on a plurality of screens. 10A to 10B are diagrams illustrating examples of images displayed on the screen, and illustrate examples of virtual tabs used for switching pages. FIG. 11A is a diagram illustrating an example in which a video is updated according to a handwriting operation. FIG. 11B is a diagram illustrating an example in which the detection result of the contact sensor is used to determine whether or not there is a handwriting operation. 12A to 12C are diagrams illustrating an example of a portable screen. 13A to 13D are diagrams illustrating another example of the portable screen. FIG. 14 is a diagram illustrating an example of a reference arrangement state. FIG. 15 is a flowchart for explaining an example of an operation for inputting an image quality setting instruction. FIG. 16 is a flowchart for explaining an example of the operation for adjusting the image quality for each screen. FIG. 17 is a flowchart for explaining an example of projection control. FIG. 18 is a diagram illustrating an example of an arrangement state when an image quality setting instruction is input. FIG. 19 is a flowchart for explaining another example of the operation of inputting the image quality setting instruction. FIG. 20 is a flowchart for explaining another example of the projection control. FIG. 21 is a flowchart for explaining an example of an operation for measuring ambient light. FIG. 22 is a flowchart for explaining another example of the projection control, and shows an example in which the image quality is adjusted according to the intensity of the ambient light. FIG. 23 is a flowchart for explaining another example of the projection control, and shows an example in which the image quality is adjusted according to the intensity of the ambient light. FIG. 24 is a diagram illustrating an example of a configuration of a projection system including an environment illumination unit. FIG. 25 is a flowchart for explaining an example of the operation for adjusting the environmental illumination.

  Hereinafter, the projection system according to the present embodiment will be described with reference to the drawings. The projection system according to the present embodiment has a function of not only projecting an image but also bidirectionally controlling the projection of the image by detecting a user's gesture or screen movement with a sensor. This projection system, for example, functions such as projecting images such as documents on the screen in meetings, training, classes, etc., functions that limit the documents that can be viewed by each user, functions that automatically generate minutes, etc. Is provided.

  FIG. 1A is a diagram showing an example of a projection system according to the present embodiment, and shows a projection system using a desktop screen 3. FIG. 2A is a diagram showing another example of the projection system according to this embodiment, and shows a projection system using a portable screen 4. The projection system shown in these examples includes a multi-function projector 2 installed on the ceiling of a conference room and the like, and a desktop screen 3 or a portable screen 4 on which an image is projected. In the example of the figure, a desk 12 is arranged below the multi-function projector 2, and an image is projected from the multi-function projector 2 toward a desktop screen 3 or a portable screen 4 placed on the desk 12. The user sits on the seat 11 arranged around the desk 12 and holds a meeting or the like while watching the images projected on these screens (3, 4).

  In the example of FIGS. 1A and 2A, only the desktop screen 3 or the portable screen 4 is used, but these screens (3, 4) may be used on the desk 12 at the same time. . In this case, the multi-function projector 2 projects images on the screens (3, 4) in parallel.

  FIG. 1B is a diagram illustrating an example of the desktop screen 3. The desktop screen 3 shown in FIG. 1B is a flat plate-like member having a substantially rectangular flat projection surface 311. For the projection surface 311, for example, a general-purpose projector screen or a high-efficiency screen using a dimple reflector having high reflection efficiency is used.

  Star-shaped marks 301 and 302 are provided at diagonal corners of the projection surface 311 of the desktop screen 3. The marks 301 and 302 are detected by an object detection unit 22 described later, and are used for determining the position and orientation of the desktop screen 3. The marks 301 and 302 may be, for example, marks printed with invisible ink that emits fluorescence upon receiving light of a specific wavelength (such as invisible infrared rays or ultraviolet rays), or marks printed with general visible ink But you can. The marks 301 and 302 may be a reflecting plate that reflects projection light or a light emitting element (such as a light emitting diode). Note that the marks 301 and 302 may be configured to be rewritable using heat-sensitive ink, electronic paper, or the like.

  The desktop screen 3 includes a plurality of microphones 31 and speakers 32 near the edges of the four sides. The plurality of microphones 31 collect the voice of the speaker at different locations for the process of specifying the position of the speaker. Some microphones 31 collect environmental sounds other than sound for noise removal processing. The speaker 32 generates an operation sound (such as a click sound) corresponding to a predetermined gesture of the user on the projection surface 311 or a sound based on arbitrary audio data. Note that the microphone 31 and the speaker 32 may be housed on the outer edge of the desktop screen 3 (within the thickness range of the desktop screen 3). Thereby, when an image is projected from the multifunction projector 2 onto the projection surface 311, it is possible to prevent the image from overlapping the microphone 31 and the speaker 32.

  2B to 2C are diagrams illustrating an example of the portable screen 4. In the example of this figure, the portable screen 4 can be opened and closed (deformed) like a notebook. FIG. 2B shows the cover 450 of the portable screen 4 in the closed state. In the example of FIG. 2B, a two-dimensional code 451 including user identification information and a photograph 452 of the user's face are printed or pasted on the cover 450 of the portable screen 4. Note that the two-dimensional code 451 including the identification information of the user and the photograph 452 of the user's face may be configured to be rewritable using thermal ink or electronic paper.

  FIG. 2C shows the projection surfaces 411-1 and 411-2 of the portable screen 4 in the opened state. In the example of FIG. 2C, the portable screen 4 includes two foldable projection surfaces 411-1 and 411-2. As the projection surfaces 411-1 and 411-2 (hereinafter sometimes referred to as “projection surface 411” without distinction), for example, a general-purpose projector screen or a high-efficiency screen using a dimple reflector is used.

  Three marks 401 to 403 are provided on the two projection surfaces 411 of the portable screen 4, respectively. The marks 401 to 403 are detected by an object detection unit 22 described later, and are used to determine the position and orientation of each projection plane 411 and to determine the deformation state (open / close state) of the portable screen 4. The marks 401 to 403 may be marks printed with ink (such as invisible ink), or may be reflectors or light emitting elements. The marks 401 to 403 may be configured to be rewritable using heat-sensitive ink, electronic paper, or the like.

  A plurality of microphones 43 and speakers 44 are provided at the ends of the two projection surfaces 411. The plurality of microphones 43 collects the voice of the speaker and the environmental sound for noise removal. The speaker 44 generates an operation sound corresponding to a predetermined gesture of the user on the two projection surfaces 411 and a sound based on arbitrary audio data. The microphone 43 and the speaker 44 may be accommodated within a thickness range on the end surfaces of the outer edges of the projection surfaces 411-1 and 411-2. Accordingly, it is possible to prevent the images from overlapping the microphone 43 and the speaker 44 when the images are projected from the multifunction projector 2 onto the projection surfaces 411-1 and 411-2.

  FIG. 3 is a diagram showing an example of the configuration of the projection system according to the present embodiment. The projection system according to the present embodiment includes a control device 5 that comprehensively controls the overall operation. As shown in FIG. 3, for example, the multi-function projector 2, the desktop screen 3, and the portable screen 4 communicate with the control device 5 by a wireless communication method such as Bluetooth (registered trademark) or wireless LAN. Note that communication with the control device 5 is not limited to wireless communication, but may be wired communication. Further, at least a part of one or more blocks constituting the control device 5 may be incorporated in one or more other devices (for example, the multifunction projector 2).

  Furthermore, the control device 5 communicates with a server 6 connected to a LAN or other network. The control device 5 stores video data projected by the multifunction projector 2, sound data output from the speakers (32, 44) of the screen (3, 4), information for authenticating the user identification information, and the like. Obtain from the server 6.

  FIG. 4 is a diagram illustrating an example of the configuration of the multifunction projector 2. The multi-function projector 2 illustrated in FIG. 4 includes a projection unit 21, an object detection unit 22, an imaging unit 23, a communication unit 24, and a control unit 25.

  The projection unit 21 is a device that projects an image. For example, the projection unit 21 controls whether to transmit or block the light for each pixel through the light from the light source to the LCD panel, and displays the image with a liquid crystal projector or laser light from the laser light source with a MEMS mirror. It includes a laser projector that displays an image by reflecting and scanning in a predetermined area.

  In the present embodiment, the projection unit 21 has a function of changing the projection direction according to the control of the control unit 25 and a function of correcting distortion of the optical image at the projection destination. For example, the projection unit 21 drives the optical system with an actuator or the like to adjust the direction of the optical axis and the shape of the optical image.

  The object detection unit 22 detects the position of each part of the object in the detection target region. The detection target area is, for example, a three-dimensional space including the projection range of the projection unit 21, and the object detection unit 22 is a position of each part of the object existing in the three-dimensional space, that is, a three-dimensional space having a depth. Detect shape. For example, the object detection unit 22 irradiates the detection target space with infrared rays having a predetermined pattern from a predetermined position, and is reflected by an object (portable screen 4 or other detection target 14) existing in the space. An infrared ray image is taken with a camera at another position. The object detection unit 22 acquires information on the three-dimensional shape of the object based on the distortion of the infrared ray pattern in the captured image. Alternatively, the object detection unit 22 detects a time until the infrared ray irradiated from the laser is reflected by the object and received by the optical sensor, a method of detecting a shift of images captured at different positions, and the like. The three-dimensional information of the object may be acquired by various known methods.

  Note that the detection target region is a two-dimensional plane (for example, a plane on the desk 12), and the position and orientation of the object (rotation on the plane) even if information on the depth of the object (for example, the portable screen 4) is ignored. (Direction) can be detected, the object detection unit 22 may be a camera that captures a two-dimensional image.

  The imaging unit 23 images a projection range in which the projection unit 21 can project an image and its surroundings. The image captured by the imaging unit 23 is information relating to detection of the user 13 approaching the projection range of the projection unit 21, determination of the position of the user 13 around the projection range, facial expressions and gestures of the user 13, and the like. Used for acquisition of

  The communication unit 24 is a device that communicates with the control device 5 by a wireless communication method such as Bluetooth (registered trademark) or wireless LAN, and includes a circuit that performs predetermined baseband processing and a transmission / reception circuit.

  The control unit 25 is a device that controls each component of the multi-function projector 2 and includes, for example, a computer that executes processing according to an instruction code of a program stored in a memory. The control unit 25 controls the projection direction in the projection unit 21 and corrects the shape of the optical image in accordance with a command sent from the control device 5, and receives the video data received from the control device 5 to the projection unit 21. Input and project the video according to the video data. In addition, the control unit 25 performs processing of acquiring the detection result of the object in the object detection unit 22 and the captured image in the imaging unit 23 and transmitting the acquired image to the control device 5.

  In the example of FIG. 4, the multi-function projector 2 includes the object detection unit 22 and the imaging unit 23, but these devices may be provided independently.

  FIG. 5 is a diagram illustrating an example of the configuration of the desktop screen 3. The desktop screen 3 illustrated in FIG. 5 includes a plurality of microphones 31, a plurality of speakers 32, an input unit 33, a communication unit 34, and a control unit 35. The desktop screen 3 is equipped with a battery (not shown) for supplying power to the internal electronic circuit.

  The plurality of microphones 31 (six in the example of FIG. 1B) collect the voice of the speaker and the environmental sound for noise removal.

  The plurality of speakers 32 (two in the example of FIG. 1B) respectively generate operation sounds according to a predetermined gesture of the user and sounds based on arbitrary audio data.

  The input unit 33 is a device for inputting a user instruction, and includes a rotary dial provided at a side edge of the projection surface 311 in the example of FIG. 1B. The input unit 33 inputs a signal corresponding to the rotation of the dial to the control unit 35. The signal input from the input unit 33 is transmitted from the communication unit 34 to the control device 5 as information indicating the user's instruction, and is used for processing of sending a document page in the video.

  The communication unit 34 is a device that communicates with the control device 5 by a wireless communication method such as Bluetooth (registered trademark) or wireless LAN, and includes a circuit that performs predetermined baseband processing and a transmission / reception circuit.

  The control unit 35 is a device that controls each component of the desktop screen 3 and includes, for example, a computer that executes processing in accordance with an instruction code of a program stored in a memory. The control unit 35 performs processing for transmitting sound data collected by the plurality of microphones 31 to the control device 5, processing for outputting sound from the speaker 32 based on audio data received from the control device 5, and input unit 33. A process of transmitting information on the user's instruction obtained in step S5 to the control device 5 is performed.

  FIG. 6 is a diagram illustrating an example of the configuration of the portable screen 4. The portable screen 4 shown in FIG. 6 includes a contact sensor 41, a vibration generator 42, a plurality of microphones 43, speakers 44, input units 45 and 46, a communication unit 47, and a control unit 48. The portable screen 4 is equipped with a battery (not shown) for supplying power to the internal electronic circuit.

  The contact sensor 41 is a sensor that detects the contact of an object such as a finger on the projection surface 411, and includes, for example, a piezoelectric element that detects a change in pressure accompanying the contact of the object. Alternatively, the contact sensor 41 may include a sensor that detects changes in various physical quantities (capacitance, resistance, temperature, etc.) accompanying the contact of the object.

  The vibration generator 42 is a device that transmits vibration to a finger or the like that contacts the projection surface 411, and includes various actuators that can generate vibration, such as a piezoelectric vibrator and a motor.

  Sensors and actuators similar to the contact sensor 41 and the vibration generator 42 can be mounted on the desktop screen 3 described above.

  The plurality of microphones 43 (two in the example of FIG. 2B) collect the voice of the speaker and the environmental sound for noise removal.

  The speaker 44 generates an operation sound corresponding to a predetermined gesture of the user or a sound based on arbitrary audio data.

  The input units 45 and 46 are devices for inputting user instructions. In the example of FIG. 2B, the input units 45 and 46 each include a rotary dial. The dial of the input unit 45 is provided on the side edge near the folding position of the two projection surfaces 411, and the dial of the input unit 46 is provided near the center of the side edge of the projection surface 411 away from the folding position. Yes. The input units 45 and 46 input signals corresponding to the rotation of the dial to the control unit 48, respectively. Signals input from the input units 45 and 46 are transmitted from the communication unit 47 to the control device 5 as information indicating the user's instruction, and are used for processing of sending a document page in the video.

  The communication unit 47 is a device that communicates with the control device 5 by a wireless communication method such as Bluetooth (registered trademark) or wireless LAN, and includes a circuit that performs predetermined baseband processing and a transmission / reception circuit.

  The control unit 48 is a device that controls each component of the portable screen 4 and includes, for example, a computer that executes processing in accordance with an instruction code of a program stored in a memory. The control unit 48 vibrates the vibration generator 42 in accordance with a process of transmitting the detection result of the contact sensor 41 that detects contact with the projection surface 411 to the control device 5 or a command sent from the control device 5. A process of making the finger touching the projection surface 411 feel the vibration is performed. Further, the control unit 48 transmits the sound data collected by the plurality of microphones 43 to the control device 5, outputs the sound from the speaker 44 based on the audio data received from the control device 5, and inputs A process of transmitting information related to the user's instruction obtained by the units 45 and 46 to the control device 5 is also performed.

  FIG. 7 is a diagram illustrating an example of the configuration of the control device 5. The control device 5 illustrated in FIG. 7 includes a display unit 51, an input unit 52, communication units 53 and 54, and a control unit 55.

  The display unit 51 is a device that displays an image, and includes, for example, a liquid crystal display or an organic EL display.

  The input unit 52 is a device for an administrator of the projection system to input an instruction, and includes, for example, a keyboard, a mouse, a touch pad, and the like.

  The communication unit 53 is a device that performs wireless communication with each component (multifunctional projector 2, desktop screen 3, and portable screen 4) in the projection system. For example, the wireless communication unit 53 is a predetermined wireless device such as Bluetooth (registered trademark) or wireless LAN. Communicate using the communication method. The communication unit 53 includes a baseband processing circuit and a transmission / reception circuit adapted to a predetermined wireless communication method.

  The communication unit 54 is a device that communicates with the server 6 connected to a LAN or other network, and includes a baseband processing circuit and a transmission / reception circuit adapted to a predetermined communication method such as Ethernet (registered trademark).

  The control unit 55 is a device that governs overall control of the projection system by the control device 5, and includes a processing unit 56 and a storage unit 57 in the example of FIG. 7. The processing unit 56 includes a computer that executes processing according to the instruction code of the program stored in the storage unit 57. The storage unit 57 includes a storage device such as a RAM, a flash ROM, a hard disk, and an optical disk. All processes in the processing unit 56 may be executed in accordance with a program in a computer, or at least a part thereof may be executed by dedicated hardware (logic circuit). All of the programs executed by the computer of the processing unit 56 may be stored in the storage unit 57, or at least a part thereof may be appropriately downloaded from the server 6 or another external device.

  Next, the operation of the projection system having the above-described configuration will be described.

<Operation at the start>
The control device 5 monitors the approach of the user to the projection range based on the image of the imaging unit 23 that images the periphery of the projection range of the projection unit 21. For example, the control device 5 refers to the information (meeting information) related to the meeting registered in advance in the server 6 and, based on the information on the meeting start time included in the meeting information, approaches the user from a predetermined time before the start time. To monitor. When the control device 5 determines that the user has approached the projection range (for example, when a person's movement is captured by an image near the entrance of the conference room), the control device 5 activates the projection unit 21.

  When it is determined that the user has approached the projection range of the projection unit 21, the control device 5 indicates the projection range with an optical image or illumination light so that the user can easily recognize the projection range. The projection unit 21 is controlled. In this case, the control device 5 may guide each user to the determined seat 11 with reference to the seat order information registered in the meeting information described above. For example, the control device 5 may acquire information on the user who is seated in each seat 11 from the meeting information, and display the name of the user who is seated near each seat 11 based on the acquired information. Good.

<Authentication of the user who owns the portable screen 4>
The control device 5 identifies the portable screen 4 from the object located in the projection range of the projection unit 21 based on the detection result of the object detection unit 22. When a new portable screen 4 is specified within the projection range of the projection unit 21 and its cover 450 is directed in a direction that the object detection unit 22 can detect (upward in the example of FIG. 2A), the control device 5 The two-dimensional code 451 is specified from the image of the cover 450 obtained by the object detection unit 22, and the user identification information included in the two-dimensional code 451 is extracted. The control device 5 authenticates that the portable screen 4 belongs to a legitimate user by comparing the identification information extracted from the two-dimensional code 451 with information registered in advance in the server 6.

  When the user of the portable screen 4 is authenticated, the control device 5 inputs authentication information such as a password and a signature associated with the identification information in addition to the identification information obtained from the two-dimensional code 451 or the like. You may ask the user. For example, the control device 5 projects an image for prompting input of authentication information such as a password and signature from the projection unit 21 onto the portable screen 4 and performs a predetermined gesture (such as a password input operation using a numeric key or a signature input operation). Let the user do it. The control device 5 detects a predetermined gesture by the object detection unit 22 and acquires authentication information represented by the predetermined gesture. The control device 5 compares the authentication information input by the user's predetermined gesture with the authentication information previously stored in the server 6 or the like in association with the identification information, so that the authentication information input by the user is It is determined whether it is a thing. When it is determined that the authentication information is legitimate, the control device 5 authenticates that the portable screen 4 placed in the projection range of the projection unit 21 belongs to a legitimate user.

  When authenticating that the portable screen 4 belongs to an authorized user, the control device 5 establishes wireless communication with the portable screen 4. The control device 5 starts processing for receiving sound data collected by the microphone 43 from the portable screen 4 and processing for transmitting audio data for outputting sound by the speaker 44 to the portable screen 4.

  Further, the control device 5 restricts the content of the image projected on the portable screen 4 according to the identification information of the user who has been authenticated as the owner of the portable screen 4. For example, the control device 5 identifies the user who has been authenticated as the owner of the portable screen 4 when the user instructs with a gesture or the like to project a confidential document or the like for which browsing authority is set onto the portable screen 4. Whether or not browsing is possible is determined based on the information. For example, based on the identification information of the user, the control device 5 acquires information related to the viewing authority of the user from the server 6 and determines whether the user has the viewing authority for a confidential document or the like. When it is determined that the user does not have browsing authority, the control device 5 restricts projection of confidential documents and the like onto the portable screen 4 owned by the user.

<Operation to project the image on the screen>
When the authenticated portable screen 4 is placed in the projection range, the control device 5 selects the marks 401 to 403 provided on the projection surfaces 411 of the portable screen 4 from the objects detected by the object detection unit 22. Is identified. When the control device 5 identifies the marks 401 to 403 on the portable screen 4, the position and orientation of the projection surface 411 of the portable screen 4 are determined based on the positions in the three-dimensional space where the identified marks 401 to 403 exist. Determine.

  Assuming that a three-dimensional orthogonal coordinate system serving as a reference of a space in which the detection target exists is a “reference coordinate system”, a three-dimensional orthogonal coordinate system fixed to the detection target (projection plane 411 or the like) is “ "Object coordinate system". In this case, the control device 5 may determine the position of the origin of the object coordinate system as viewed from the reference coordinate system as the position of the detection object. Further, the control device 5 may determine the rotation angle of each coordinate axis of the object coordinate system with reference to each coordinate axis of the reference coordinate system as the attitude of the detection target object.

  When the control device 5 determines the position and orientation of the projection surface 411 based on the detection result of the object detection unit 22, the control device 5 performs projection so that the projection state of the image on the projection surface 411 is kept constant according to the determination result. The unit 21 is controlled. For example, the control device 5 keeps the range in which the image is projected on the projection surface 411 and the orientation of the image with respect to the projection surface 411 as the image projection state.

  FIG. 8 is a diagram for explaining that the image projection state on the portable screen 4 is kept constant. In FIG. 8, the portable screen 4 is simplified to one projection plane 411. The shape of the projection plane 411 is rectangular in plan view, and marks 401, 402, and 403 are arranged counterclockwise in this order at the three corners of the rectangle. The range in which the image is projected on the projection plane 411 is a rectangular range that is substantially similar to the shape of the projection plane 411. The orientation of the image with respect to the projection plane 411 is such that the side edge provided with the marks 401 and 402 is on the lower side and the side edge provided with the marks 402 and 403 is on the right. FIG. 8 shows three states of the projection plane 411 (portable screen 4), and the position and orientation of the projection plane 411 are different in each state. However, the rectangular range in which the image is projected on the projection surface 411 and the orientation of the image with respect to the projection surface 411 are all the same in the three states. As shown in FIG. 8, the control device 5 keeps the image projection state (image range, image orientation, etc.) constant even when the position and orientation of the portable screen 4 change variously. The projection unit 21 is controlled.

  Note that the control device 5 performs the same control for the desktop screen 3 as that for the portable screen 4 described above. That is, the control device 5 determines the position and orientation of the projection surface 311 based on the positions of the marks 301 and 302 detected by the object detection unit 22, and the projection state of the video on the projection surface 311 is based on the determination result. The projection unit 21 is controlled so as to be in a predetermined state.

  The control device 5 determines the state of deformation of the deformable portable screen 4 based on the detection result of the object detection unit 22. For example, when the marks 401 to 403 on the projection surfaces 411 are specified on the portable screen 4, the control device 5 determines that the portable screen 4 is in the open state illustrated in FIG. 2C.

<Operation when there are multiple screens>
When there are a plurality of screens (desktop screen 3 and portable screen 4) in the projection range of the projection unit 21, the control device 5 projects an image on each screen in parallel.

9A to 9D are diagrams for explaining a method of projecting images on a plurality of screens. Here, as an example, images are projected onto four portable screens 4-1 to 4-4 in parallel. Explain the case.
In the example of FIG. 9A, one range including the four portable screens 4-1 to 4-4 is a range in which one video is projected. This one image includes four drawing portions corresponding to four screens (4-1 to 4-4). The four drawing portions are arranged in one video so as to overlap the place where the corresponding screen (4-1 to 4-4) is placed. The parts other than the four drawing parts (parts with fine oblique lines) are, for example, shadow parts with low luminance, and the four drawing parts are separated from each other by the shadow parts. In this way, when there are a plurality of screens within the projection range of the projection unit 21, the control unit 5 generates an image in which the drawing portions are arranged at positions where the plurality of screens overlap, and the plurality of screens exist. Project this image towards the range.

  In the example of FIG. 9B, images are sequentially projected onto each of the four portable screens 4-1 to 4-4. In FIG. 9B, the hatched portion having a rough eye indicates the screen surface in a state where an image is not projected. Each of the four portable screens 4-1 to 4-4 is in a state in which no video is temporarily projected, but by sequentially projecting the video in a short cycle, the video is continuously displayed to the user. Appears to be displayed. As described above, the control unit 5 may repeat the process of sequentially projecting the video onto each of the plurality of screens existing within the projection range of the projection unit 21.

  In the example of FIG. 9C, the four projectors 21-1 to 21-4 are mounted on the multi-function projector 2, and the four projectors 21-1 are directed toward the four portable screens 4-1 to 4-4. Images are individually projected from ˜21-4. As described above, the control device 5 may assign one screen to each of the plurality of projection units 21 as a video projection destination. Thereby, when there are a plurality of screens, an image is individually projected toward each of the screens.

  In the example of FIG. 9D, two projectors 21-1 and 21-2 are mounted on the multifunction projector 2, and 1 is directed from the projector 21-1 toward the two portable screens 4-1 and 4-2. One image is projected, and another image is projected from the projection unit 21-2 toward the two portable screens 4-3 and 4-4. As described above, the control unit 5 may assign one or more screens to each of the plurality of projection units 21 as a video projection destination. Then, when a plurality of screens are assigned to one projection unit 21, the control device 5 generates a video in which drawing portions are arranged at positions where they overlap with the plurality of screens, and the plurality of screens exist. The generated image may be projected from the one projection unit 21 toward the range.

  When a plurality of screens are assigned to one projection unit 21 in the plurality of projection units 21, the control device 5 assigns each of the plurality of screens from the one projection unit 21 as illustrated in FIG. 9B. You may repeat the process which projects an image | video sequentially toward.

<Projection of images on other screens>
The control device 5 controls the projection unit 21 so as to project an image on a place other than the screen (desktop screen 3, portable screen 4) within the projection range in accordance with an instruction given by the user through a gesture or the like. To do. Thereby, for example, detailed information regarding an article placed in a place other than the screen can be projected near the article.

  In addition, when projecting an image on a location other than the screen, the control device 5 may automatically select a location that is not obstructed by an obstacle as a projection destination of the image. For example, the control device 5 specifies a range in which the projection of the image is blocked by an obstacle based on the detection result of the object detection unit 22, and the location selected as a candidate for the projection destination of the image overlaps the specified range. Moves the image projection destination to the outside of the specified range.

  Further, the projection unit 21 can be used not only for image projection but also for illumination light irradiation. The control device 5 may irradiate illumination light to a specific location within the projection range (or the entire projection range) in accordance with an instruction given from the user by a gesture or the like.

<Recognition of user operations>
The control device 5 identifies an object such as a user's hand or finger or a pen held by the user (hereinafter, may be referred to as an “operation body”) from the objects detected by the object detection unit 22. Then, it is determined whether or not the movement of the specified operating body is a predetermined gesture. When the control device 5 determines that the motion of the operating body (such as a finger) is a predetermined gesture, the control device 5 performs processing corresponding to the gesture. For example, the control device 5 performs enlargement, reduction, rotation, movement of the image, change of the color of the image, change of the thickness of the line included in the image, etc. according to the gesture of the user's finger or pen. I do.

  Further, the control device 5 guides the operation by the gesture described above, and generates a user interface image for allowing the user to easily perform the target operation. FIG. 10A to FIG. 10B are diagrams showing examples of such user interface images, and show examples of virtual tabs used for switching pages. In the example of this figure, the control device 5 has a plurality of virtual tabs 110-1 to 110-7 (hereinafter, sometimes referred to as “virtual tabs 110” without distinction) arranged at the end of the document. Generate video. When the user performs a gesture indicating one of these virtual tabs 110 (for example, a gesture of touching the virtual tab 110 with a finger), the control device 5 displays the page of the document included in the video by the virtual indicated by the gesture. Switch to the page corresponding to the tab 110 (FIG. 10B). For the operation of moving to a page that does not correspond to the virtual tab 110, for example, the dial of the input unit 33 of the desktop screen 3 (FIG. 1B) or the dials of the input units 45 and 46 of the portable screen 4 (FIG. 2C) is used. . The control device 5 sequentially switches the pages of the document included in the video forward and backward according to the operation of these input units.

  Furthermore, the control device 5 specifies the locus of the line written by the handwriting operation based on the motion of the operation body detected by the object detection unit 22. When specifying the line trajectory by the handwriting operation, the control device 5 updates the projected video so that the specified line trajectory is displayed so as to overlap the current video, for example, as shown in FIG. 11A. The control device 5 may use the detection result of the contact sensor 41, for example, as shown in FIG. Thereby, since the movement of the operating body in a state where the operating body (finger, pen, etc.) is in contact with the projection surface 411 can be accurately captured, the line trajectory can be accurately identified by handwriting operation.

  When specifying the locus of the line by the handwriting operation, the control device 5 may recognize a character or a figure from the identified locus of the line. For example, the control device 5 may display the character or figure recognized from the locus of the line superimposed on the current video, or add the recognized character or graphic to a data file such as a document corresponding to the current video. May be.

<Acquisition of 3D image>
The control device 5 acquires a three-dimensional image of an object located in the detection target area of the object detection unit 22 in accordance with an instruction given from the user by a gesture or the like. For example, when the control device 5 determines that an object is placed on the screen (desktop screen 3 or portable screen 4) based on the detection result of the object detection unit 22, a three-dimensional image of the object is displayed. get. In this case, the control device 5 may add the data of the three-dimensional image to the data file related to the image being projected on the screen on which the object is placed. In addition, when the control device 5 acquires a three-dimensional image of an object, the control device 5 may project the acquired three-dimensional image on a screen or another place as a new video.

<Creation of minutes data>
The control device 5 records (records) sound data collected by the microphone 31 of the desktop screen 3 or the microphone 43 of the portable screen 4. When sound is collected by a plurality of microphones 31 of the desktop screen 3, for example, the control device 5 generates a synthesized sound that is synthesized by delaying the sounds collected by the plurality of microphones 31, and generates the synthesized sound. The delay setting for each of the sounds collected by the plurality of microphones 31 is adjusted so that the sensitivity of the included speech becomes the highest (so that it has directivity in the direction of the speaker). Thereby, the voice of the speaker is clarified.

  Further, the control device 5 estimates the direction of the speaker from the delay setting adjusted so that the sensitivity of the voice of the speech included in the synthesized sound is the highest. When the direction of the speaker is estimated, the control device 5 removes sound (environmental sound) coming from a direction different from the estimated direction as noise. For example, the control device 5 performs a process of removing noise included in the above-described synthesized sound by using sound components collected by some of the plurality of microphones 31. Thereby, the voice of the speaker is further clarified.

  Further, when estimating the direction of the speaker, the control device 5 may use an image captured by the imaging unit 23. For example, the control device 5 specifies the position of the person around the projection range of the projection unit 21 based on the image captured by the imaging unit 23. The control device 5 identifies the range of the direction in which the speaker can exist based on the position of the person identified from the image, and the delay in which the sensitivity of the voice included in the synthesized sound becomes the highest in the identified range. Search for settings. This makes it easy to accurately estimate the direction of the speaker.

  When the direction of the speaker is estimated from the sound data, the control device 5 identifies the speaker based on the estimated direction. For example, the control device 5 specifies which user the speaker is based on the information on the seat order of each user included in the meeting information and the direction of the speaker estimated from the sound data.

  Note that, when collecting sounds from the microphones 43 mounted on each of the plurality of portable screens 4, for example, the control device 5 compares the sounds collected on the plurality of portable screens 4 for the same utterance. Based on the result of this comparison, the control device 5 identifies the user of the portable screen 4 that has collected the loudest voice for the same utterance as the utterer of the utterance.

  The control device 5 records the time when the utterance was recorded in the recorded voice data and the information of the user specified as the utterer of the utterance (for example, the identification information of the user) in association with each other. The control device 5 performs voice recognition processing based on the voice data clarified by the above-described processing, and converts the content of the utterance into text. The control device 5 performs conversion from voice to text by voice recognition processing, for example, in real time.

  The control device 5 generates minutes data in which the utterance content data converted into text by the speech recognition process and the information of the user specified as the utterer are time-series according to the utterance time. Note that the control device 5 may include not only the utterance content but also information related to the content of the video projected on the screen in time series and included in the minutes data. In addition, the control device 5 displays indices (degree of excitement, degree of softening, degree of repulsion, degree of activity, etc.) related to the state of conversation based on the facial expression image of each participant imaged by the imaging unit 23. The calculated index may be time-series and included in the minutes data.

<Operation at the end>
The control device 5 ends the user's participation in the meeting in response to an instruction given from the user by a gesture or the like.

  12A to 12C are diagrams illustrating an example of the portable screen 4. FIG. 12A illustrates a front cover side, FIG. 12B illustrates an inner side, and FIG. 12C illustrates a back cover side. As shown in FIG. 12C, a two-dimensional code 461 representing the intention of leaving the meeting is printed or pasted on the back cover 460 of the portable screen 4. The two-dimensional code 461 includes, for example, information indicating that the user of specific identification information leaves the meeting. When the object detection unit 22 detects the two-dimensional code 461 on the back cover side of the portable screen 4, the control device 5 displays the portable screen 4 corresponding to the identification information included in the two-dimensional code 461. Exclude from projection. Further, the control device 5 may associate the identification information included in the two-dimensional code 461 with the time when the two-dimensional code 461 is detected, and record it in the minutes data described above. Thereby, the time when a specific user leaves the meeting is recorded in the minutes.

<Other examples of portable screen 4>
13A to 13D are diagrams showing another example of the portable screen 4, in which a plate-shaped intermediate member 410 is added to the portable screen 4 that can be opened and closed shown in FIGS. 12A to 12C. However, the two microphones 43 and the speaker 44 are respectively arranged on the side edges of the back cover 460.

  The intermediate member 410 has a projection surface 411-3 on one surface and a projection surface 411-4 on the other surface. In the example of FIGS. 13B and 13C, the projection planes 411-1, 411-2, 411-3, and 411-4 have rectangular shapes, respectively, and are substantially congruent with each other. One side edge portion of the intermediate member 410 is connected to a boundary portion between the projection surfaces 411-1 and 411-2. When the portable screen 4 is closed, the intermediate member 410 is sandwiched between the projection surfaces 411-1 and 411-2. When the portable screen 4 is opened, the intermediate member 410 can be turned like a notebook page. 13B shows a state in which the projection surface 411-3 is opened toward the front side, and FIG. 13B shows a state in which the projection surface 411-4 is opened toward the front side.

  In the portable screen 4 shown in FIGS. 13A to 13D, the size and shape of the entire projection surface are substantially the same in the developed state of FIG. 13B and the developed state of FIG. 13C. Therefore, when the same marks (401 to 403) as the projection surfaces 411-1 and 411-2 are provided on both the projection surfaces 411-3 and 411-4, the unfolded state in FIG. 13B and the unfolded state in FIG. 13C. Can no longer be distinguished. Therefore, in the case of the portable screen 4 having a plurality of projection planes, the marks of the individual projection planes are different so that the appearance of one or more marks provided on the entire projection plane in each deployment state is different from the other deployment states. Number, arrangement, shape, size, etc. are set. In the example of FIGS. 13B and 13C, a part of the mark is different between the projection surface 411-3 and the projection surface 411-4 so that the development state of FIG. 13B and the development state of FIG. 13C can be distinguished. That is, the projection plane 411-3 has the same three marks (401, 402, 403) as the projection planes 411-1 and 411-2, while the projection plane 411-4 is the projection planes 411-1 and 411-2. And three marks (401A, 402, 403) obtained by adding a cross-shaped mark 401A to the same two marks (402, 403). The control device 5 determines the developed state of FIG. 13B and the developed state of FIG. 13C from the difference in shape between the mark 401 and the mark 401A detected by the object detection unit 22.

<Operation to adjust image quality of images projected on multiple screens>
Next, an operation for adjusting the image quality of the image projected on the plurality of screens in the above-described projection system will be described. Here, as an example, a case where a plurality of portable screens 4 are subject to image quality adjustment will be described. Note that the image quality adjustment target is not limited to the portable screen 4. For example, the desktop screen 3 may be the image quality adjustment target.

  The control device 5 detects the arrangement state (for example, for example) of each portable screen 4 detected by the object detection unit 22 so that the image quality of the image projected on each portable screen 4 approaches the image quality set for each portable screen 4. The projection unit 21 is controlled in accordance with the position and posture of the portable screen 4. Thereby, the image quality of the image projected on each portable screen 4 is easily maintained at the image quality set for each portable screen 4.

  Specifically, based on the detection result of the object detection unit 22, the control device 5 may be referred to as information related to at least one of the position and orientation of the portable screen 4 in the detection target region (hereinafter referred to as “arrangement state information”). Is obtained for each of the plurality of portable screens 4. The control device 5 performs projection control according to the arrangement state information for each of the plurality of portable screens 4. In the projection control of one portable screen 4, the control device 5 determines the image quality of the image projected on the one portable screen 4 according to the arrangement state information acquired for the one portable screen 4. The projection unit 21 is controlled so as to approach the image quality set for the portable screen 4. Thereby, the image quality of the image projected on the one portable screen 4 is easily maintained at the image quality set for the one portable screen 4.

  When the posture of the portable screen 4 (for example, the rotation state of the portable screen 4 on the plane on the desk 12) is constant, or when the change in the posture of the portable screen 4 does not affect the image quality. In the arrangement state information, information regarding the posture of the portable screen 4 determined based on the detection result of the object detection unit 22 may not be included. Further, when the position of the portable screen 4 is constant, or when the change in the position of the portable screen 4 does not affect the image quality, the portable screen determined based on the detection result of the object detection unit 22. Information regarding the position of 4 may not be included in the arrangement state information.

  The control device 5 repeats the acquisition of the arrangement state information of each portable screen 4 based on the detection result of the object detection unit 22 and repeats the projection control of each portable screen 4 according to the arrangement state information. For example, the control device 5 repeats the acquisition of the arrangement state information and the projection control at regular intervals. Thereby, when the position and posture of each portable screen 4 change, the arrangement state information of each portable screen 4 is acquired after the change, and according to the acquired arrangement state information, each portable screen 4 Projection control is performed. Therefore, even when the position or orientation of each portable screen 4 changes, the image quality of the image projected on each portable screen 4 is easily maintained at the image quality set for each portable screen 4.

  The image quality that the control device 5 adjusts according to the arrangement state information includes, for example, brightness, contrast, color density, hue, sharpness, geometric distortion, shading, color unevenness, and the like. The control device 5 controls the projection unit 21 according to the arrangement state information so that the image quality approaches the preset image quality for each portable screen 4.

  For example, the control device 5 stores information regarding image quality setting (for example, a numerical value indicating the degree of brightness) when the portable screen 4 is in a reference arrangement state (for example, a reference position or a reference posture). It memorizes every screen 4. Here, the image quality when the portable screen 4 is in the standard arrangement state is referred to as “reference image quality”, and information relating to the setting of the reference image quality is referred to as “reference setting information”. In the projection control of one portable screen 4, the control device 5 is arranged based on the arrangement state information acquired for the one portable screen 4 and the reference setting information stored for the one portable screen 4. The projection unit 21 is controlled so that the image quality in the arrangement state indicated by the state information approaches the reference image quality set by the reference setting information.

  Specifically, in the projection control of one portable screen 4, the control device 5 determines the difference between the arrangement state indicated by the arrangement state information acquired for the one portable screen 4 and the reference arrangement state (for example, reference The image quality in the arrangement state indicated by the arrangement state information is close to the reference image quality set by the reference setting information based on the difference between the current position and the current position, and the difference between the reference position and the current position). The image quality setting obtained by correcting the basic image quality setting based on the reference setting information is acquired. And the control apparatus 5 controls the projection part 21 so that the image | video based on the image quality setting acquired by this correction | amendment may be projected on the said 1 portable screen 4. FIG. The control device 5 acquires the image quality setting by the above-described correction, while maintaining the reference setting information without being changed. That is, when the projection control of one portable screen 4 is repeated, the control device 5 adds the correction according to the arrangement state information to the same image quality setting (basic image quality setting based on the reference setting information). This is used as an image quality setting when projecting an image on the one portable screen 4.

  FIG. 14 is a diagram illustrating an example of a reference arrangement state. In FIG. 14, “13A” to “13F” indicate users, and “4A” to “4F” indicate portable screens, respectively. The English character added to the end of the code represents the correspondence between the user and the portable screen used by the user (for example, the user 13A uses the portable screen 4A). In FIG. 14, “80” indicates the detection target area of the object detection unit 22, and “7” indicates the reference arrangement state.

  In the reference arrangement state 7 shown in FIG. 14, the central portion of the portable screen 4 is positioned substantially at the center of the elliptical desk 12 in plan view, and each side of the portable screen 4 is substantially parallel to the elliptical axis. It is an arrangement state directed in the direction. Focusing on the portable screen 4B in the example of FIG. 14, the central portion of the portable screen 4B is displaced in the minor axis direction from the center of the elliptical shape of the desk 12 as compared with the reference arrangement state 7. Here, assuming that the position of the projection unit 21 in plan view is near the center of the desk 12, the position of the portable screen 4 </ b> B shown in FIG. 14 is farther from the projection unit 21 than in the reference arrangement state 7. Therefore, when the image is projected on the portable screen 4B using the basic image quality setting based on the reference setting information as it is, a difference in image quality occurs with respect to the reference image quality set by the reference setting information (for example, set by the reference setting information). Brightness is reduced compared to the standard image quality). Therefore, the control device 5 adds correction to the basic image quality setting based on the reference setting information so that the image quality in the arrangement state indicated by the arrangement state information of the portable screen 4B approaches the reference image quality set by the reference setting information. A setting is acquired (for example, a correction setting value whose brightness is increased as compared with the reference image quality based on the reference setting information is acquired). And the control apparatus 5 controls the projection part 21 so that the image | video based on the setting of the image quality acquired by this correction | amendment may be projected on the portable screen 4B. Thereby, the image quality of the image on the portable screen 4B is close to the reference image quality set by the reference setting information.

  In addition, the control device 5 provides a user instruction (hereinafter referred to as an “image quality setting instruction”) for setting image quality such as brightness, contrast, color density, hue, and sharpness for at least some of the plurality of portable screens 4. Can be entered). The image quality setting instruction corresponds to, for example, a user instruction to update / add “reference setting information” described above. When an image quality setting instruction is input for one portable screen 4, the control device 5 controls the brightness and contrast in the image quality of the image projected on the one portable screen 4 in the projection control of the one portable screen 4. The projection unit 21 is controlled in accordance with the arrangement state information so that the image quality such as color depth, hue, and sharpness approaches the image quality set by the image quality setting instruction. Thereby, in the image projected on the one portable screen 4, the image quality such as brightness, contrast, color density, hue, sharpness, etc. is easily maintained at the image quality set by the image quality setting instruction.

  For example, the control device 5 inputs an image quality setting instruction by a user's gesture based on the detection result of the object detection unit 22. Thereby, since the detection result of the object detection unit 22 is used for inputting an image quality setting instruction, the configuration is simplified as compared with the case where a sensor dedicated to gesture input is used.

  Note that the control device 5 may be able to set all the image quality to be adjusted by an image quality setting instruction, or may be able to set only a part of all the image quality to be adjusted by an image quality setting instruction. For example, the image quality such as geometric distortion, shading, and color unevenness is generally required to have a minimal influence on the video, and usually does not depend on the user's preference. Therefore, such an image quality may not be included in the image quality that can be set by the image quality setting instruction.

  Further, the control device 5 may permit the input of the image quality setting instruction for all the portable screens 4 or may permit the input of the image quality setting instruction only for the specific portable screen 4. For example, the control device 5 permits the input of the image quality setting instruction and the portable screen 4 that permits the input of the image quality setting instruction according to the identification information (user identification information) assigned to each portable screen 4. You may distinguish from the portable screen 4 which does not carry out.

  For each of the plurality of portable screens 4, the control device 5 includes information on image quality (for example, basic setting information) set for each portable screen 4 and identification information (user's information) assigned to each portable screen 4. ID information) is stored in association with each other. This makes it possible to manage information relating to image quality (such as brightness setting values) set for each portable screen 4 based on the identification information.

  The control device 5 acquires the identification information of each portable screen 4 based on the detection result of the object detection unit 22, as described in <Authentication of the User Owning the Portable Screen 4>. Thereby, since the detection result of the object detection part 22 is used for acquisition of the identification information of each portable screen 4, a structure becomes simple compared with the case where a sensor for exclusive use for acquiring identification information is used.

  Next, with reference to FIGS. 15 to 17, a specific example of an operation for adjusting the image quality of images projected on a plurality of screens will be described.

  FIG. 15 is a flowchart for explaining an example of an operation for inputting an image quality setting instruction. The control device 5 repeatedly executes the operation shown in FIG.

  Based on the detection result of the object detection unit 22, the control device 5 monitors and inputs an instruction by a user's gesture (ST100). When an instruction by a gesture is input, control device 5 determines whether or not the instruction is an image quality setting instruction for one portable screen 4 (ST105). When the image quality setting instruction for one portable screen 4 is input (Yes in ST105), the control device 5 relates to the setting of the image quality stored for the one portable screen 4 in accordance with the input image quality setting instruction. Information (for example, basic setting information) is changed (ST110). The control device 5 stores the identification information of the portable screen 4 in association with the information related to the image quality setting instructed in the image quality setting instruction. Further, when the image quality setting is changed according to the image quality setting instruction, the control device 5 projects an image based on the changed image quality setting on the one portable screen 4 (ST115). Thereby, the image quality after the setting change can be confirmed by the user himself.

  FIG. 16 is a flowchart for explaining an example of the operation for adjusting the image quality for each portable screen 4. The control device 5 repeatedly executes the operation shown in FIG.

  When the object detection unit 22 detects the position of each part of the object in the detection target area (ST200), the control device 5 identifies each portable screen 4 existing in the detection target area based on the detection result, While acquiring identification information, the arrangement | positioning state information of each portable screen 4 is acquired (ST205). In accordance with the acquired arrangement state information of each portable screen 4, the control device 5 has an object detection unit so that the image quality of the image projected on each portable screen 4 approaches the image quality set for each portable screen 4. The projection unit 21 is controlled according to the detection result 22 (ST210).

FIG. 17 is a diagram for explaining an example of projection control (ST210, FIG. 16).
The control device 5 selects one portable screen 4 from the plurality of portable screens 4 specified based on the detection result of the object detection unit 22 (ST300), and sets the image quality of the selected portable screen 4. Correction is performed according to the latest arrangement state information (ST305). For example, the control device 5 determines the arrangement state indicated by the arrangement state information based on the difference between the arrangement state indicated by the latest arrangement state information acquired for the one portable screen 4 and the reference arrangement state 7 (FIG. 14). The image quality setting obtained by correcting the basic image quality setting based on the reference setting information is acquired so that the image quality in the image approaches the reference image quality set by the reference setting information.

  The control device 5 determines whether there is a portable screen 4 that has not yet been selected among the plurality of portable screens 4 identified based on the detection result of the object detection unit 22 (ST315). When there is a portable screen 4 that has not yet been selected (Yes in ST315), the control device 5 selects the portable screen 4 (ST320), and repeats the processes after step ST305.

  When image quality settings have been acquired for all the portable screens 4 specified based on the detection results of the object detection unit 22 by the correction in step ST305 (No in ST315), the control device 5 acquires the image quality acquired for each portable screen 4 An image based on the setting is projected on each portable screen 4 (ST325). Thereby, the image quality of the image projected on each portable screen 4 is close to the image quality set for each portable screen 4.

(Other examples of projection control)
Next, another example of projection control by the control device 5 will be described.
In the example of the projection control described above, the image quality of the image projected on the one portable screen 4 is preset for the one portable screen 4 according to the arrangement state information acquired for the one portable screen 4. The projection unit 21 is controlled so as to approach the image quality (for example, the reference image quality set by the reference setting information). On the other hand, in another example of the projection control described below, the image quality of the image projected on one portable screen 4 is close to the image quality when the image quality setting instruction is input for the one portable screen 4. The projection unit 21 is controlled.

  More specifically, when an image quality setting instruction for setting the image quality of an image to be projected onto one portable screen 4 is input, the control device 5 projects onto the one portable screen 4 in accordance with the image quality setting instruction. The image quality setting in the projection unit 21 is changed so that the image quality of the video to be changed changes. As a result, since the video having the image quality set by the image quality setting instruction is projected onto the portable screen 4, the image quality after the setting change can be confirmed by the user himself / herself. In addition, when the image quality setting instruction is input, the control device 5 includes the first setting information regarding the changed image quality setting and the second setting information which is the latest arrangement state information acquired for the one portable screen 4. And remember. Then, in the projection control of the one portable screen 4, the control device 5 includes the latest setting state information acquired for the one portable screen 4, the first setting information and the first setting information stored when the image quality setting instruction is input. In accordance with the two setting information, the projection unit 21 is controlled so that the image quality of the image projected on the one portable screen 4 approaches the image quality when the image quality setting instruction is input.

  In this projection control, based on the second setting information, which is the arrangement state information at the time of inputting the image quality setting instruction, and the latest arrangement state information, the difference in arrangement state (difference in position, I understand the difference in posture. Therefore, the correction of the image quality setting necessary to obtain the image quality approximate to the image quality at the time of inputting the image quality setting instruction is estimated from the difference in the arrangement state. The estimated correction is applied to the image quality setting indicated by the first setting information (the image quality setting changed by the image quality setting instruction) so that the image quality is corrected so as to approach the image quality when the image quality setting instruction is input. The image quality setting is acquired. Therefore, by projecting an image based on the acquired image quality setting on the projection unit 21, an image quality approximate to the image quality at the time of inputting the image quality setting instruction can be obtained.

  FIG. 18 is a diagram illustrating an example of an arrangement state when an image quality setting instruction is input. The same reference numerals in FIGS. 18 and 14 denote the same components. In FIG. 18, “8” indicates an arrangement state of the portable screen 4A when an image quality setting instruction is input. In the example of FIG. 18, the portable screen 4A is moved after the image quality setting instruction is input, and the arrangement state is changed. Therefore, when an image is projected onto the portable screen 4A using the image quality setting changed at the time of inputting the image quality setting instruction as it is, the image quality is different from that at the time of inputting the image quality setting instruction. Therefore, in the projection control of the portable screen 4A, the control device 5 responds to the latest arrangement state information acquired for the portable screen 4A and the first setting information and the second setting information stored when the image quality setting instruction is input. Thus, the projection unit 21 is controlled so that the image quality of the image projected on the portable screen 4A approaches the image quality when the image quality setting instruction is input. For example, the control device 5 uses the second setting information, which is the arrangement state information at the time of inputting the image quality setting instruction, and the latest arrangement state information, and the difference in the arrangement state (position of the position) compared to when the image quality setting instruction is input. Difference, difference in posture) is calculated. Based on the calculated change amount, the control device 5 calculates a correction amount related to correction of image quality setting necessary to obtain an image quality approximate to the image quality at the time of inputting the image quality setting instruction, and based on the calculated correction amount Thus, the image quality setting indicated by the first setting information is corrected. Then, the control device 5 controls the projection unit 21 to project an image on the portable screen 4A based on the corrected image quality setting. Thereby, the image quality of the image on the portable screen 4A is close to the image quality confirmed by the user when the image quality setting instruction is input (the image quality in the arrangement state 8 when the image quality setting instruction is input).

  FIG. 19 is a flowchart for explaining another example of an operation for inputting an image quality setting instruction. Steps ST120 and ST125 are added to the flowchart shown in FIG. The control device 5 repeatedly executes the operation shown in FIG.

  When the image quality setting instruction for one portable screen 4 is input (Yes in ST105), the control device 5 relates to the setting of the image quality stored for the one portable screen 4 in accordance with the input image quality setting instruction. The information is changed (ST110), and an image based on the changed image quality setting is projected onto the one portable screen 4 (ST115). Thereby, the image quality after the setting change can be confirmed by the user himself. In this case, the control device 5 stores the first setting information related to the image quality setting changed according to the image quality setting instruction (ST120), and the latest arrangement state information acquired for the one portable screen 4 is also stored. Stored as second setting information (ST125).

  FIG. 20 is a flowchart for explaining another example of the projection control, in which steps ST305 and ST325 in the flowchart shown in FIG. 17 are replaced with steps ST310 and ST330, respectively. The control device 5 repeatedly executes the operation shown in FIG.

  The control device 5 selects one portable screen 4 from the plurality of portable screens 4 specified based on the detection result of the object detection unit 22 (ST300), and sets the image quality setting of the selected portable screen 4 as follows. It is acquired based on the latest arrangement state information and the first setting information and the second setting information stored when the image quality setting instruction is input (ST310). For example, the control device 5 uses the second setting information (ST125, FIG. 19), which is the arrangement state information when the image quality setting instruction is input, and the latest arrangement state information, and the arrangement state compared to when the image quality setting instruction is input. The amount of change related to the difference (position difference, posture difference) is calculated. Based on the calculated change amount, the control device 5 calculates a correction amount related to the correction of the image quality setting necessary to obtain an image quality approximate to the image quality when the image quality setting instruction is input. The control device 5 corrects the image quality setting indicated by the first setting information (ST120, FIG. 19) based on the calculated correction amount, and acquires this as the corrected image quality setting of the portable screen 4.

  When image quality settings have been acquired in step ST310 for all portable screens 4 identified based on the detection results of the object detection unit 22 (No in ST315), the control device 5 uses the acquired image quality settings for each portable screen 4. The image based on this is projected onto each portable screen 4 (ST330). As a result, the image quality of the image projected on each portable screen 4 is close to the image quality confirmed by the user when inputting the image quality setting instruction.

(Adjusting the image quality according to the ambient light intensity)
Next, as another example of the operation for adjusting the image quality of each portable screen 4, an example in which the image quality is adjusted according to the intensity of ambient light will be described.

  In this example, the projection system includes an ambient light detection unit that detects ambient light intensity in an area where a plurality of portable screens 4 are arranged. An imaging unit 23 can be used as the ambient light detection unit. For example, the intensity of the ambient light can be calculated based on the average value of each pixel value in the image captured by the imaging unit 23.

  In the projection control of one portable screen 4, the control device 5 projects the one portable screen 4 on the one portable screen 4 according to the arrangement state information acquired about the one portable screen 4 and the detection result of the ambient light. The projection unit 21 is controlled so that the image quality of the video approaches the image quality set for the one screen. For example, the control device 5 increases the brightness of the image when the intensity of the ambient light increases, and decreases the brightness of the image when the intensity of the ambient light decreases. Thereby, even when the intensity of the ambient light changes, the image quality of the image projected on each portable screen 4 is easily maintained at the image quality set for each portable screen 4.

  Further, the control device 5 performs a filter process for smoothing a temporal change in the intensity of the ambient light detected by the ambient light detection unit (imaging unit 23). The imaging unit 23 is controlled according to the intensity detection result. As a result, even when the intensity of the ambient light changes abruptly (for example, when the sunlight is temporarily inserted through a gap in the swinging curtain), the sudden change component included in the detection result of the ambient light intensity is attenuated by the filtering process. Therefore, it is possible to suppress a rapid change in the image quality of the image due to the projection control according to the rapid change in the ambient light.

  FIG. 21 is a flowchart for explaining an example of an operation for measuring ambient light. The control device 5 repeatedly executes the operation shown in FIG.

  Control device 5 acquires an image captured by imaging unit 23, and measures the intensity of ambient light based on the acquired image (ST400). For example, the control device 5 calculates a measurement value of the intensity of ambient light according to the average value of the values of each pixel in the image captured by the imaging unit 23. And the control apparatus 5 performs the filter process which smoothes the calculated measured value of the intensity of ambient light temporally (ST405).

  Note that the control device 5 detects an image used for measuring the intensity of the ambient light in the ambient light detection unit (for example, when capturing an image in the imaging unit 23 to detect the intensity of the ambient light), the projection unit The brightness of the image projected from 21 may be temporarily reduced (for example, the brightness of all pixels in the video is set to the minimum value). As a result, the measurement result of the intensity of the ambient light is hardly affected by the projection light of the projection unit 21.

  22 and 23 are flowcharts for explaining another example of the projection control, and each shows an example in which the image quality is adjusted according to the intensity of the ambient light.

  FIG. 22 is obtained by changing step ST305 in the flowchart of FIG. 17 to step ST305A. FIG. 23 is obtained by changing step ST310 in the flowchart of FIG. 20 to step ST310A. In step ST305A or step ST310A, the control device 5 further corrects the image quality setting obtained in step ST305 or step ST310 described above according to the measured value of the intensity of ambient light. For example, the control device 5 corrects the brightness of the image so that the brightness of the image is increased when the intensity of the ambient light increases, and the brightness of the image is also decreased when the intensity of the ambient light is decreased.

(Adjustment of environmental lighting according to the intensity of ambient light)
Next, as an example of the operation related to the operation of adjusting the image quality of each portable screen 4, an example of adjusting the environmental illumination according to the intensity of the environmental light will be described.

  The projection system in this example includes an environment illumination unit 10 that illuminates an area where a plurality of portable screens 4 are arranged. FIG. 24 is a diagram illustrating an example of a configuration of a projection system including the environment illumination unit 10. In the example of FIG. 24, the environment lighting unit 10 communicates with the control device 5 wirelessly, but this communication may be wired. The environmental illumination unit 10 includes a light source such as an LED or a fluorescent lamp, and changes the intensity of the environmental illumination according to the control of the control device 5.

  The control device 5 controls the illuminance of the environment illumination unit 10 according to the brightness of the video set as the image quality for at least some of the plurality of portable screens 4 and the detection result of the environment light detection unit. For example, the control device 5 calculates the average value of the brightness of the video set on the plurality of portable screens 4 and controls the illuminance of the environment illumination unit 10 according to the calculated average value. Specifically, the smaller the average brightness of the images set on the plurality of portable screens 4 (the smaller the average image brightness), the smaller the illuminance of the environmental illumination unit 10 is, and the images can be viewed. Make it easy to do.

  FIG. 25 is a flowchart for explaining an example of the operation for adjusting the environmental illumination. The control device 5 repeatedly executes the operation shown in FIG.

  The control device 5 acquires the brightness setting values of the images projected on the plurality of portable screens 4 (ST500), and the image brightness on the plurality of portable screens 4 based on the acquired brightness setting values. An average value (a value obtained by averaging the brightness setting values of each portable screen 4) is calculated (ST505). And the control apparatus 5 controls the illumination intensity of the environmental illumination part 10 according to the average value of the brightness of the image | video calculated in step ST505 (ST510). For example, the control device 5 decreases the illuminance of the environment illumination unit 10 as the average value of the image brightness calculated in step ST505 is smaller (as the average image brightness is smaller).

  In this way, the brightness of the image on each portable screen 4 is controlled by controlling the illuminance of the environment illumination unit 10 according to the brightness of the image set as the image quality for at least some of the plurality of portable screens 4. The intensity of ambient light can be adjusted appropriately according to the conditions.

  Note that the present embodiment is not limited to the above-described example, and various variations obvious to those skilled in the art are also included in the present embodiment.

  For example, in the above-described embodiment, an example in which the image quality adjustment is performed on each of the plurality of portable screens 4 has been described.

DESCRIPTION OF SYMBOLS 2 ... Multifunctional projector, 21 ... Projection part, 22 ... Object detection part, 23 ... Imaging part, 24 ... Communication part, 25 ... Control part, 3 ... Desktop screen, 31, 43 ... Microphone, 32, 44 ... Speaker, 33 ... Input unit, 34 ... Communication unit, 35 ... Control unit, 301, 302, 401-403 ... Mark, 311, 411 ... Projection surface, 4 ... Portable screen, 41 ... Contact sensor, 42 ... Vibration generator, 45 ... input unit, 46 ... input unit, 47 ... communication unit, 48 ... control unit, 409, 451, 461 ... two-dimensional code, 450 ... cover, 452 ... photo, 460 ... back cover, 5 ... control device, 51 ... display , 52 ... input unit, 53 ... communication unit, 54 ... communication unit, 55 ... control unit, 56 ... processing unit, 57 ... storage unit, 6 ... server, 7 ... reference arrangement state, 8 ... input of image quality setting instruction Time arrangement, 10 ... environmental lighting

Claims (16)

A projection unit that projects an image on each of a plurality of screens;
A detection unit for detecting an arrangement state of each screen with respect to the projection unit;
And a control unit that controls the projection unit according to a detection result of the detection unit so that an image quality of an image projected on each screen approaches an image quality set for each screen. The detection unit detects the position of each part of the object in the detection target area where the plurality of screens are arranged,
The controller is
Based on the detection result of the detection unit, arrangement state information regarding at least one of the position and orientation of the screen in the detection target region is acquired for each of the plurality of screens,
Projection control for controlling the projection unit so that the image quality of an image projected on the one screen approaches the image quality set for the one screen according to the arrangement state information acquired for the one screen, For each of the multiple screens,
The projection system according to claim 1. The control unit repeats the acquisition of the arrangement state information of each screen based on the detection result of the detection unit, and repeats the projection control of each screen according to the arrangement state information.
The projection system according to claim 2. 4. The projection system according to claim 2, wherein the image quality set for each screen includes at least one of brightness, contrast, color density, hue, sharpness, geometric distortion, shading, and color unevenness. The controller is
An image quality setting instruction for setting at least one of brightness, contrast, color density, hue, and sharpness can be input for at least some of the plurality of screens;
When the image quality setting instruction is input for one screen, in the projection control of the one screen, at least brightness, contrast, color density, hue, and sharpness in the image quality of the image projected on the one screen. Controlling the projection unit according to the arrangement state information so that one approaches the image quality set by the image quality setting instruction,
The projection system according to claim 4. The controller is
While repeating the acquisition of the arrangement state information of each screen based on the detection result of the detection unit, repeating the projection control of each screen according to the arrangement state information,
When the image quality setting instruction for setting the image quality of the image projected on the one screen is input, the image quality setting in the projection unit is changed so that the image quality of the image projected on the one screen changes according to the image quality setting instruction. And the first setting information related to the image quality setting after the change and the second setting information which is the latest arrangement state information acquired for the one screen,
In the projection control of the one screen, according to the latest arrangement state information acquired for the one screen and the first setting information and the second setting information stored at the time of inputting the image quality setting instruction, Controlling the projection unit so that the image quality of the image projected on the one screen approaches the image quality at the time of inputting the image quality setting instruction;
The projection system according to any one of claims 2 to 5. The control unit inputs the image quality setting instruction by a user's gesture based on a detection result of the detection unit.
The projection system according to claim 5 or 6. The control unit stores information relating to image quality set for each screen and identification information assigned to each screen in association with each other for each of the plurality of screens.
The projection system according to any one of claims 2 to 7. The control unit acquires the identification information of each screen based on a detection result of the detection unit.
The projection system according to claim 8. An ambient light detector for detecting the intensity of ambient light in an area where the plurality of screens are disposed;
In the projection control of one screen, the control unit determines the image quality of an image projected on the one screen according to the arrangement state information acquired for the one screen and the detection result of the ambient light detection unit. Controlling the projection unit so as to approach the image quality set for the one screen.
The projection system according to any one of claims 2 to 9. The controller is
Performing a filtering process to smooth the temporal change in the intensity of the ambient light detected by the ambient light detection unit;
In the projection control, the projection unit is controlled according to a detection result of the ambient light detection unit subjected to the filtering process.
The projection system according to claim 10. An environment illumination unit that illuminates an area where the plurality of screens are disposed;
The control unit controls the illuminance of the environmental illumination unit according to the brightness of the video set as the image quality for at least some of the plurality of screens.
The projection system according to any one of claims 2 to 9. A projection unit that projects an image on each of a plurality of screens;
A projection system control method comprising: a detection unit that detects an arrangement state of each screen with respect to the projection unit;
A control method for a projection system, comprising: controlling the projection unit according to a detection result of the detection unit so that an image quality of an image projected on each screen approaches an image quality set for each screen. Arrangement state information regarding at least one of the position and orientation of the screen in the detection target region based on the detection result of the detection unit that detects the position of each part of the object in the detection target region in which the plurality of screens are arranged. Obtaining for each of the plurality of screens;
Projection control for controlling the projection unit so that the image quality of an image projected on the one screen approaches the image quality set for the one screen according to the arrangement state information acquired for the one screen, Performing for each of the plurality of screens,
The method of controlling a projection system according to claim 13. Repeating the acquisition of the arrangement state information of each screen based on the detection result of the detection unit;
Repeating the projection control of each screen according to the arrangement state information;
When the image quality setting instruction for setting the image quality of the image projected on the one screen is input, the image quality setting in the projection unit is changed so that the image quality of the image projected on the one screen changes according to the image quality setting instruction. And storing first setting information related to the image quality setting after the change and second setting information that is the latest arrangement state information acquired for the one screen;
In the projection control of the one screen, according to the latest arrangement state information acquired for the one screen and the first setting information and the second setting information stored at the time of inputting the image quality setting instruction, Controlling the projection unit so that the image quality of the image projected on the one screen approaches the image quality at the time of inputting the image quality setting instruction.
The method for controlling the projection system according to claim 14. A program for causing a computer to execute the projection system control method according to any one of claims 13 to 15.

Images