JP2016058221A - Lighting system, lighting controller, lighting device, information display body and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system, etc. that enable a user to control a lighting device according to a simple procedure.SOLUTION: A lighting system has a light source, an information display body containing a predetermined pattern, and a lighting controller for controlling turn-on and/or turn-out of the light source by using the information display body when a predetermined pattern which is achieved by the image sensor and contained in an image of the information display body is coincident with a pre-stored pattern.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a lighting system that controls lighting, extinction, and brightness of a lighting device.

  A technique for setting an illumination color according to a user's preference for space production has been realized. Some of them use smartphones, tablet terminals and the like as controllers. Specifically, when the user sets a color by using a color table or a color chart displayed on the controller screen, the controller transmits information on the color to the illumination control device by wireless communication. The illumination control device turns on the illumination with a color according to the color information. The user confirmed the illuminated space visually.

  For example, Patent Document 1 discloses a control system for toning and dimming a lighting device by remote operation using wireless communication from a control terminal.

JP2013-131384A

  However, the conventional technique requires a complicated procedure before wireless communication, and simplification of operability has been demanded.

  One non-limiting exemplary embodiment of the present application provides a lighting system that allows a user to control the lighting device in a simple procedure.

  In order to solve the above problems, according to one embodiment of the present invention, a light source, an information display body including a predetermined pattern, and the predetermined pattern included in an image of the information display body acquired by an image sensor are preliminarily stored. An illumination system including an illumination controller that controls lighting and / or extinguishing of the light source using the information display body when the held pattern matches.

  The general and specific aspects described above can be implemented using systems, methods and computer programs, or can be implemented using combinations of systems, methods and computer programs.

  According to the illumination system according to an aspect of the present disclosure, an image (pattern) of the information display body is captured and registered by the imaging device, and then the predetermined information included in the image of the information display body acquired by the imaging device. If the pattern matches the previously registered pattern, the information display body is used to turn on and / or turn off the lighting device (light source), or control the color and brightness. Since the pattern used for controlling the light source can be registered using the camera, the procedure for starting the use can be simplified. Further, unlike control by normal wireless communication, control is allowed only under limited conditions, so that remote operation by a hacker or the like is difficult for security reasons.

1 is a diagram illustrating a configuration of an illumination system 100. FIG. It is a figure which shows the hardware constitutions of the illumination controller 12. 2 is a diagram illustrating a hardware configuration of a PDA 16. FIG. It is a figure which shows the display image 40 containing the CIE chromaticity diagram displayed on the display 310 of PDA16. It is a figure which shows the image 42 for a display containing the hue ring chart displayed on the display 310 of PDA16. It is a flowchart which shows the process sequence of registration mode. It is a figure which shows the partial image 40a containing finder pattern M1-M3. It is a figure which shows the partial image 40b containing a user pattern. (A)-(c) is a figure which shows the image element which comprises a user pattern. (A) is a figure which shows the hue ring chart which can be used as a substitute of a CIE chromaticity diagram, (b) is a user's handwritten chart which can be used as a substitute of a CIE chromaticity diagram. It is a figure which shows the example of the set coordinate. It is a figure which shows an example when a coordinate is set as area | region R1-R8. It is a figure which shows the image 44 containing a CIE chromaticity diagram which a user utilizes at the time of a light source control mode. It is a figure which shows the image 46 containing a hue ring chart which a user utilizes at the time of a light source control mode. It is a flowchart which shows the process sequence of light source control mode. It is a figure which shows the structure of the illumination system 200 by Embodiment 2. FIG. It is a CIE chromaticity diagram displayed on the display of the illumination controller 212. It is a figure which shows the hardware constitutions of the illumination controller 212 by Embodiment 2. FIG. 6 is a flowchart illustrating a processing procedure of the illumination controller 212 according to the second embodiment. It is a figure which shows the geometric relationship for calculating | requiring an approximate circular arc. It is a figure which shows the example of a transition by the arc locus mode using an approximate arc using the hue ring chart, and the example of a transition by a linear movement mode. It is a figure which shows the example of a transition by the linear movement mode using a color palette.

  When communication between a controller and a lighting control device is performed using wireless communication, a pairing procedure and registration with a password are required between the two in advance. These procedures are complicated, and it takes a relatively large amount of time for the user to start using. Moreover, since only the controller which completed those procedures can be utilized for control of illumination, a user may not be able to use freely.

  Therefore, the inventors of the present application have made an illumination system that allows the user to control the illumination device with a simple procedure.

  Embodiments of a lighting system according to the present invention will be described below with reference to the accompanying drawings.

(Embodiment 1)
1. Outline of Illumination System According to this Embodiment The illumination system according to this embodiment is used to turn on and / or turn off a light source of a lighting fixture, or to control color and brightness.

  The illumination system includes an imaging device having an image sensor. The user uses the imaging device to register in advance a pattern displayed on a display of an information display body such as a PDA (Personal Data Assistance), a smartphone, or a tablet terminal in the illumination system. This pattern is, for example, a CIE chromaticity coordinate chart, a hue ring chart, or a color chart such as an IT8 color target, a handwritten chart, a dimming chart that adjusts the brightness of the light source, and a time specification that adjusts the lighting time of the light source It is a chart.

  Along with registration, the lighting system sets the coordinates of the pattern and lighting conditions corresponding to the coordinates. The lighting conditions include, for example, lighting / extinguishing, lighting color, brightness, and lighting time. A specific description will be given assuming that the registered pattern is a CIE chromaticity coordinate chart. The CIE chromaticity coordinate chart includes colors corresponding to various wavelengths in a predetermined shape (outer frame). The illumination system generates and holds a table in which the coordinates of the color chart are associated with the color corresponding to the coordinate position. This completes registration.

  After registration, when the user displays the same pattern as the registered pattern on the display of the information display body and holds it over the imaging apparatus, the imaging apparatus captures an image of the pattern. In the illumination system, when the captured image is included in the image of the information display body and the previously stored pattern matches, the user uses the information display body to control the turning on and / or off of the light source. To give permission. For example, the lighting system recognizes the coordinate position of one point on the color chart displayed on the information display body specified by the user, and refers to the table to identify the color corresponding to the coordinate position. Then, the light source is turned on with that color. When the user designates a different coordinate position, the illumination system recognizes the coordinate position again from the captured image, identifies a color corresponding to the coordinate position with reference to the table, and changes the color of the light source.

  Hereinafter, a detailed configuration and operation of the lighting system will be described.

2. Configuration of Illumination System According to the Present Embodiment FIG.

  The illumination system 100 includes an imaging device 10 having an image sensor 10a, an illumination controller 12, a light source 14, and a PDA 16 that is an information display body. The imaging device 10, the illumination controller 12, and the light source 14 may be collectively referred to as the illumination device 110. The lighting device 110 can be an object of manufacture and sales.

  The lighting system 100 is used for controlling lighting of a store or a facility, for example. For example, the imaging device 10 and the light source 14 are installed on the ceiling, and the illumination controller 12 is installed on the back of the ceiling. In the present embodiment, it is assumed that the imaging device 10 and the illumination controller 12 are connected by a wired cable 11, and the illumination controller 12 and the light source 14 are connected by a wired cable 13. However, it may be connected by a wireless communication line instead of a wired cable. When manufactured and sold as the lighting device 110, it is only necessary to complete advance settings such as pairing at the time of factory shipment.

  Hereinafter, each component of the illumination system 100 will be described.

  The imaging device 10 is a so-called camera. The imaging device 10 captures a subject using the image sensor 10 a and transmits a signal indicating the captured image to the illumination controller 12 via the wired cable 11. The captured image includes a pattern (for example, CIE chromaticity coordinate chart) included in the display of the PDA 16. The imaging device 10 may be a color camera or a monochrome camera. A monochrome camera expresses the intensity of light as a single color shade. Typically, the monochrome camera is a black and white camera, but may be a camera that can capture monochrome using other colors, for example, a green monochrome in a night vision camera.

  FIG. 2 shows a hardware configuration of the lighting controller 12.

  The illumination controller 12 includes a central processing circuit (CPU) 201, a memory 202, a flash memory 203, a video processing circuit 204, a communication interface (I / F) 205, and a bus 206. The components of the lighting controller 12 are communicably connected to each other via a bus 206.

  The CPU 201 is a signal processing circuit that controls the overall operation of the lighting controller 12. In this specification, the CPU 201 may be called an arithmetic circuit or a control circuit. The CPU 201 receives an image signal and an instruction signal from the user from the imaging device 10, and performs a registration mode process and a light source control mode process shown in a flowchart described below. These processes are realized, for example, when the CPU 201 executes a computer program 207 stored in the memory 202, which is a RAM, for example.

  The flash memory 203 is, for example, a storage device that holds a table in which the coordinates of the color chart are associated with the colors according to the coordinate positions. The flash memory 203 may store a computer program 207.

  The image processing circuit 204 performs image processing on the image based on the signal of the image captured by the imaging device 10. Details of the image processing will be described later.

  A communication I / F 205 is a circuit responsible for communication with an external device. For example, the communication I / F 205 receives a signal of an image captured by the imaging device 10. Alternatively, the communication I / F 205 outputs a control signal (light source control signal) for controlling the light source 14 to the light source 14. Note that the communication I / F 205 may not be one. For example, a plurality of communication I / Fs 205 may be physically provided, and communication with the imaging device 10 and communication with the light source 14 may be performed, respectively.

  The light source 14 is a lighting fixture containing LED, for example. In the present embodiment, it is assumed that the color and brightness of the light source 14 can be adjusted independently. Therefore, for example, a plurality of LEDs that are lit in red (R), green (G), and blue (B), and a control circuit that controls their operation can be mounted on one light source 14. The control circuit controls lighting and extinction, lighting color, brightness, lighting time, and the like based on a light source control signal received from the outside. In addition, since these structures are well-known, detailed description of a structure is abbreviate | omitted.

  Next, the configuration of the PDA 16 as an information display body will be described. In this embodiment, the PDA 16 that is an electronic device is described as an example, but it should be noted that the information display body does not have to be an electronic device. As an example that is most easily understood, a handwritten chart drawn on paper by a user may be used as the information display body. It is only necessary that the handwritten chart can be registered using the imaging device 10. Further, if the user puts a mark on the handwritten chart in an arbitrary manner and the imaging apparatus 10 can control the lighting of the light source 14 according to the lighting condition by specifying the coordinates of the mark, the entity of the information display body Can be anything.

  FIG. 3 shows the hardware configuration of the PDA 16.

  The PDA 16 includes a CPU 301, a memory (RAM) 302, a flash memory 303, an image processing circuit 304, a bus 306, a wireless communication circuit 308, an antenna 309, and a display 310. The components of the PDA 16 are communicably connected to each other via a bus 306.

  The CPU 301 is a signal processing circuit that controls the operation of the entire PDA 16. In this specification, the CPU 301 may be referred to as an arithmetic circuit or a control circuit.

  The flash memory 303 stores at least one image data of a chromaticity coordinate chart, a color chart, a dimming chart for adjusting the brightness of the light source 14, and a time designation chart for adjusting the lighting time of the light source 14. The flash memory 303 may store the display image data.

  The image processing circuit 304 reads out the image data stored in the flash memory 303, performs predetermined image processing such as memory expansion for displaying on the display 310, and generates display image data.

  The wireless communication circuit 308 and the antenna 309 are used by the PDA 16 for communication with the outside. Note that it is not essential to have the wireless communication circuit 308 and the antenna 309, but is an example of the configuration of the PDA 16.

  The display 310 displays the display image data generated by the image processing circuit 304.

  FIG. 4 shows a display image 40 including a CIE chromaticity diagram displayed on the display 310 of the PDA 16. 4 is a CIE chromaticity diagram where there is a change due to the gradation of the triangular color at the center of FIG. The CIE chromaticity diagram is an example of a chromaticity coordinate chart, and is a diagram obtained by representing the color of light in xy plane coordinates. The other parts are a position detection finder pattern, a dimming chart for adjusting the brightness of the light source 14, and a time designation chart for adjusting the lighting time of the light source 14. Each element will be described later.

  In addition, the surrounding line of a CIE chromaticity diagram has shown the wavelength (unit: nm). A single color is represented by the wavelength indicated in the surrounding line. Colors other than the surroundings represent mixed colors. The center line shows the color temperature curve of the black body. For reference, FIG. 4 shows typical color names. It should be noted that the name of the leader line and the subsequent color are not included in the display image 40.

  The display image 40 including the above CIE chromaticity diagram is an example of an image displayed on the information display body. Another example is shown in FIG. FIG. 5 shows a display image 42 including a hue circle chart displayed on the display 310 of the PDA 16. A portion where there is a change due to the gradation of the annular color in the center of FIG. 5 is a hue circle chart. Also for FIG. 5, representative color names are shown for reference. It should be noted that the name of the leader line and the subsequent color are not included in the display image 42.

  The specification and drawings include explanations using chromaticity diagrams or hue rings. These descriptions have a color distribution as shown in FIGS. A person skilled in the art can easily specify the color of a portion other than the portion where the color name is written based on the relationship of the color names shown in the drawing. In the following drawings, the color names are omitted.

3. Operation of Lighting System According to this Embodiment Next, the operation of the above-described lighting system 100 will be described. The operation of the lighting system 100 is mainly realized by the lighting controller 12. Hereinafter, the illumination system 100 will be described while mainly explaining the operation of the illumination controller 12.

  The illumination system 100 of the present embodiment has two operation modes. One is a registration mode for registering a pattern (for example, the images shown in FIGS. 4 and 5) used for controlling the lighting of the light source 14. The other is a light source control mode in which lighting control of the light source 14 is performed using a registered pattern.

  Hereinafter, each operation mode will be described.

3.1. Registration Mode FIG. 6 is a flowchart showing a processing procedure of the registration mode. This process is performed by the CPU 201 of the lighting controller 12 executing the computer program 207 expanded in the memory 202. Note that the processing related to the image has been described as processing performed by the image processing circuit 204, but this means that the image processing circuit 204 that has received an instruction from the CPU 201 executes the processing.

  The transition to the registration mode is performed, for example, when the lighting system 100 is first turned on. Alternatively, for example, a switch (not shown) for shifting to the registration mode is provided on the wall surface of the facility where the lighting system 100 is installed, and the user can press the switch to shift to the registration mode. It may be done.

  After shifting to the registration mode, the user operates the PDA 16 to display an image to be registered on the display 310. The image to be registered is, for example, at least one image data of a chromaticity coordinate chart, a color chart, a dimming chart for adjusting the brightness of the light source 14, and a time designation chart for adjusting the lighting time of the light source 14.

  In the present embodiment, it is assumed that the image shown in FIG. The image shown in FIG. 4 includes a position detection finder pattern, a chromaticity coordinate chart, a dimming chart for adjusting the brightness of the light source 14, and a time designation chart for adjusting the lighting time of the light source 14. . These details are described in detail below.

  The imaging device 10 captures an image and transmits an image signal to the illumination controller 12. Thereby, the process of FIG. 6 is started by the illumination controller 12.

  In step S <b> 1, the communication I / F 205 of the illumination controller 12 receives the image signal acquired and transmitted by the imaging device 10. The image signal is a signal indicating the image shown in FIG.

  In step S2, the image processing circuit 204 of the illumination controller 12 determines whether or not a finder pattern is included in the received image signal.

  This will be specifically described. The image shown in FIG. 4 includes two types of patterns. That is, it is a finder pattern for position detection and a user pattern used to perform operations of turning on / off the light source.

  FIG. 7 shows a partial image 40a including finder patterns M1 to M3. In the present embodiment, the finder patterns M1 to M3 are predetermined at the time of factory shipment or the like and cannot be changed by the user's intention. The finder patterns M <b> 1 to M <b> 3 have the characteristics of the respective images and also have the characteristics of the mutual positional relationship. For example, each of the finder patterns M1 to M3 has a relationship of white: black: white = 1: 3: 1 in the side direction or the diagonal direction. The finder patterns M1 to M3 are provided so as to correspond to the positions of the vertices of the isosceles triangle, and the relationship M1-M2 distance = M2-M3 distance is established.

  The image processing circuit 204 of the illumination controller 12 determines whether there is a pattern (finder pattern) that matches the above-described relationship. If the finder pattern exists, the process proceeds to step S4. If not, the process returns to step S1.

  In step S4, the image processing circuit 204 corrects the inclination of the image using the above-described finder pattern. For example, the image processing circuit 204 rotates the image so that the straight line connecting the finder patterns M1 and M2 is in the horizontal direction and the straight line connecting the finder patterns M2 and M3 is in the vertical direction.

For example, the image processing circuit 204 specifies that a straight line connecting the finder patterns M1 and M2 is inclined by an angle (−θ) from the horizontal direction. When the point (x, y) is rotated by the angle θ and moved to (X, Y), the following calculation may be performed.
X = x · cos θ−y · sin θ
Y = x · sin θ + y · cos θ

  In step S5, the image processing circuit 204 separates image elements. The image element is an element constituting a user pattern.

  FIG. 8 shows a partial image 40b including a user pattern. The partial image 40b is an image of a portion obtained by removing the above-described finder pattern 40a from the image 40 in FIG.

  Fig.9 (a)-(c) shows the image element which comprises a user pattern.

  FIG. 9A is a dimming chart (vertical bar) for adjusting the brightness of the light source 14 and a time designation chart (horizontal bar) for adjusting the lighting time of the light source 14.

  FIG. 9B is a slider for the dimming chart and a slider for the time designation chart.

  FIG. 9C is a CIE chromaticity diagram.

  The user can variously combine each of FIGS. 9A to 9C described above. That is, the user pattern can be changed according to the user's intention. For example, the image elements shown in FIGS. 9A and 9B may not be provided, and only the chromaticity diagram shown in FIG. 9C may be displayed on the display 310 along with the finder pattern.

  FIG. 10A shows a hue circle chart that can be used as an alternative to the CIE chromaticity diagram. FIG. 10B is a user's handwritten chart that can be used as an alternative to the CIE chromaticity diagram.

  In step S6, the CPU 201 registers the image elements separated by the image processing circuit 204 as user patterns. Registration means storing image elements in the flash memory 203. For simplification of processing, the image element may be cut out in a rectangular shape. For example, non-rectangular image elements such as those shown in FIGS. 9C, 10A, and 10B may be cut into a rectangular shape and registered.

  In step S7, the CPU 201 sets coordinates to the registered image element. As will be described later, the coordinates are used to specify a position designated by the user in the light source control mode.

  FIG. 11 shows an example of the set coordinates. If the image element is rectangular, the X coordinate in the horizontal direction and the Y coordinate in the vertical direction are set with the lower left corner as the origin. Each point on the image element can be specified using the X and Y coordinates. FIG. 11 shows that the point P is specified by the position of (x, y) = (60, 50).

  Note that the coordinates need not be set in units of dots of image elements. For example, FIG. 12 shows an example when coordinates are set as the regions R1 to R8. Whether the position specified by the user is specified as a point or set as a region can be appropriately changed in design according to the resolution of the imaging apparatus 10, the processing speed of the CPU 201, and the like.

  In step S8, the CPU 201 generates a table in which lighting conditions (color information, dimming level, lighting time, etc.) are associated with two-dimensional coordinates.

  For example, in the example of FIG. 11, the RGB value (0, 0, 255) corresponding to “blue” is associated with the position of the point P. Similarly, RGB values are set for each point on the coordinates. Thereby, the CPU 201 can generate a table in which coordinates and RGB values are associated with each other.

  In the example of FIG. 12, one region is set for a plurality of dot positions. When changing the color for each region, the CPU 201 generates a table in which the same color is associated with a plurality of dot positions.

  The same applies to the light control level and the lighting time. What is necessary is just to prepare the table which each matched the brightness and lighting time for every position of each bar shown to Fig.9 (a).

  Table 1 shows an example of the generated table. For convenience, the bar position of the light control level and lighting time is also shown in two-dimensional coordinates.

  In the present specification, a condition (set value) for turning on the light source 14 is referred to as a “lighting condition”.

  In step S <b> 9, the CPU 201 stores the generated table in the flash memory 203. This completes the registration mode.

3.2. Light source control mode When registration in the registration mode described above has already been performed, the illumination system 100 normally operates in the light source control mode. In the light source control mode, if the pattern of the information display body 16 held by the user is the same as the pattern of the registered image element, the lighting system 100 allows the user to control the lighting of the light source 14 using the pattern. Details will be described below.

  FIG. 13 shows an image 44 including a CIE chromaticity diagram used by the user in the light source control mode. The user operates the PDA 16 to display the image 44 on the display 310. Then, the imaging device 10 captures the display 310. FIG. 13 also shows a lighting pointer 50 for the user to specify a color.

  FIG. 14 shows another example. FIG. 14 shows an image 46 including a hue circle chart used by the user in the light source control mode. Similar to FIG. 13, FIG. 14 also shows five pointers (for example, pointer 52) for the user to specify a color. In the example of FIG. 14, it is assumed that there are a plurality of light sources 14 and each is lit in a different color.

  In the following description, it is assumed that image elements included in the image 40 illustrated in FIG. 4 are registered and the table is held in the flash memory 203. Furthermore, it is assumed that the image 44 shown in FIG. 13 is displayed on the display 310 of the PDA 16 in the light source control mode.

  The imaging device 10 captures an image on the display 310 and transmits an image signal to the illumination controller 12. Thereby, the process of FIG. 15 is started by the illumination controller 12.

  FIG. 15 is a flowchart illustrating a processing procedure in the light source control mode. This process is performed by the CPU 201 of the lighting controller 12 executing the computer program 207 expanded in the memory 202. Note that the processing related to the image has been described as processing performed by the image processing circuit 204, but this means that the image processing circuit 204 that has received an instruction from the CPU 201 executes the processing.

  Note that each program of the registration mode and the light source control mode may be implemented separately and called and executed from a main program that performs a switching determination process between the registration mode and the light source control mode. Alternatively, each may be implemented as part of the main program.

  The process from step S1 to S4 in FIG. 15 is the same as the process from step S1 to S4 in FIG. Therefore, explanation is omitted.

  In step S10, the image processing circuit 204 determines whether an image (detected image) detected from the received image signal matches the registered image. In the present embodiment, it is assumed that the determination target is a detection image showing a chromaticity diagram and a registered image.

  This process is realized by, for example, pattern matching of both images or comparison of image feature amounts. The image feature value here is, for example, a pixel value, a luminance value, a histogram value, or a coefficient value after compression processing by discrete cosine transform.

  Although it is preferable to determine whether or not the detected image and the registered image completely match, it may be considered that they match if they are different within an allowable range. The allowable range is, for example, an error of 5% or less.

  If the detected image matches the registered image, the process proceeds to step S11. If not, the process proceeds to step S12.

  Step S11 and subsequent steps correspond to processing when lighting control of the light source 14 is allowed. In step S11, the image processing circuit 204 detects the coordinates of the lighting pointer 50 (FIG. 13).

  Step S12 corresponds to a process in the case where lighting control of the light source 14 is not permitted (prohibited). In step S12, the CPU 201 presents a notification that control is impossible to the user. The notification method is, for example, warning by sound, lighting of a warning lamp, or the like. Note that the process of step S12 may be omitted.

  In step S <b> 13, the image processing circuit 204 detects the position of the slider on the time designation chart (horizontal bar) for adjusting the lighting time of the light source 14 included in the image 44.

  In step S <b> 14, the image processing circuit 204 detects the position of the slider of the dimming chart (vertical bar) for adjusting the brightness of the light source 14 included in the image 44.

  In step S15, the CPU 201 refers to the table stored in the flash memory 203, coordinates of the obtained lighting pointer 50 (FIG. 13), a time designation chart (horizontal bar), and a dimming chart (vertical). Each lighting condition of lighting color, time, and brightness is specified from the information on the position of each slider of the bar.

  In step S <b> 16, the CPU 201 transmits a light source control signal for lighting the light source 14 according to the lighting condition to the light source 14 via the communication I / F 205.

  The light source 14 is turned on with a color, lighting time, and brightness according to the received light source control signal. This ends the light source control mode.

  If it is desired to change the lighting of the light source 14 by changing the position of the lighting pointer 50 and the position of the slider as needed, the CPU 201 may execute the process of FIG. 15 every second, for example.

  As described above, in the present embodiment, by displaying the same pattern as the previously registered pattern on the information display body, the user can perform lighting control of the light source 14 using the pattern.

  In the first embodiment, the imaging device 10 is described as being installed on the ceiling, but this is an example. For example, a camera provided on a smartphone or the like that already exists on the same wireless / wired network as the illumination controller may be used as the imaging device 10. In this case, instead of the wired cable 11 in FIG. 1, a communication line by wireless connection is established.

(Embodiment 2)
In this embodiment, an example in which the illumination controller performs lighting control of the light source by wireless communication will be described.

  2. Description of the Related Art Conventionally, lighting control using wireless communication is known in which a user performs a visual operation using a graphical user interface (GUI) displayed on a display such as a smartphone.

  However, in the case of wireless communication, the followability of the operation may be reduced due to the deterioration of the radio wave condition caused by the congestion of the communication channel. As a result, even when the user tries to continuously change the color of the light source by dragging his / her finger on the GUI, a situation where the color changes only discontinuously may occur.

  In view of such a situation, the inventor of the present application has realized an illumination system that enables the color of a light source to be continuously changed.

1. Outline and Configuration of Illumination System According to the Present Embodiment The illumination system according to the present embodiment only needs to include a configuration corresponding to the illumination controller 12 and the light source 14 in the illumination system according to the first embodiment (FIG. 1). . However, the lighting controller according to the present embodiment has a touch screen panel and a display. The user can touch the touch screen panel as if directly touching the screen of the lighting controller and perform lighting control of the wirelessly connected light source.

  In this embodiment, when the user traces the GUI displayed on the display of the lighting controller, the path is temporarily stored in the memory, and the continuous color change of the light source corresponding to the continuous change of the path is performed. Describe the technology that enables reliable reproduction.

  FIG. 16 shows a configuration of the illumination system 200 according to the present embodiment. The lighting system 200 includes a lighting controller 212 and a light source 214. The function of the light source 214 is the same as that of the light source 14 according to the first embodiment. However, in this embodiment, it is wirelessly connected to the illumination controller 212 and has an antenna for that purpose.

  Hereinafter, an outline of the operation of the illumination system 200 will be described with reference to FIG.

  FIG. 17 shows a CIE chromaticity diagram displayed on the display of the illumination controller 212. In this example, the CIE chromaticity diagram is described as an example, but this is an example. It may be a monochrome diagram expressing the intensity of light as a single color shading referred to in the first embodiment.

  When the user taps an arbitrary position 250, the lighting controller 212 calculates the coordinates of the position and specifies the color corresponding to the coordinates. The illumination controller 212 transmits a light source control signal for lighting with the color to the light source 214 by wireless communication. The light source 214 is lit in the color specified by the light source control signal.

  While maintaining the tapped state by the user, the display is traced as a path 262, and the movement of the finger is temporarily stopped at the position of the desired color to be lit. For example, it is assumed that the path 262 is a locus resulting from a plurality of stops.

  The illumination controller 212 continuously calculates the coordinates of each moving position. Then, the coordinates of the position of the desired color at which the movement of the finger is stopped are stored in the memory. The lighting controller 212 repeats the above process unless the user's finger is released. That is, the coordinates of the temporarily stopped position are stored in the memory. Then, after the finger is released (after the operation is completed), the illumination controller 212 generates color information corresponding to the stored coordinates in time series, and generates and outputs a light source control signal.

  Now, it is assumed that the finger is released at the position 250a through the path 262 from the position (start point) where the finger is first tapped. If the user stops his finger from the start point to the end point in the middle of the movement process (path 262), and further starts and ends the movement, the lighting controller 212 will start, stop (one or more), and An arc 264 is calculated using the end point. The illumination controller 212 stores the coordinates of a plurality of positions constituting the arc 264 in the memory. Then, after the user's operation is finished, the illumination controller 212 transmits a light source control signal for changing the color of the light source with a color corresponding to the coordinates of the position on the arc according to the direction corresponding to the movement of the finger. As a result, the light source sequentially turns on the colors on the arc locus (arc locus mode).

  On the other hand, it is assumed that the user taps the position 250 again, moves to the position 250b instantly via the path 252a, and the finger is released. In this case, the color corresponding to the start point position 250a is instantaneously switched to the color corresponding to the end point position 250b (linear movement mode).

  Further, once the finger is released, the mode is switched to the linear movement mode even after the arc trajectory mode. For example, assume that the user taps the position 250a again, moves to the position 250b in an instant via the path 252b, and the finger is released. In this case, the color corresponding to the start point position 250a is instantaneously switched to the color corresponding to the end point position 250b.

  Hereinafter, the illumination controller 212 will be described.

  FIG. 18 shows a hardware configuration of the lighting controller 212 according to the present embodiment.

  The lighting controller 212 includes a central processing circuit (CPU) 201, a memory 202, a flash memory 203, a video processing circuit 204, a communication interface (I / F) 205, a bus 206, a touch screen panel 209, and a display. 210. The components of the lighting controller 212 are communicably connected to each other via a bus 206.

  The lighting controller 212 according to the present embodiment is different from the lighting controller 12 according to the first embodiment as hardware in that the communication I / F 205 is a communication circuit for wireless connection, and the touch screen panel 209 and the display 210 are connected. Is to have.

  The touch screen panel 209 is, for example, a capacitance type that detects a change in capacitance caused by touching a human finger and outputs a signal indicating the detection position (touch position). The touch screen panel 209 is a transparent panel that is provided so as to cover the display 210 and has an input area associated with the display area of the display. When the user touches the display 210, information on the touch position is output to the CPU 201. The CPU 201 performs processing corresponding to the image object displayed at the position, for example, selection of the object.

  When a person touches the touch screen panel 209 with a finger and then changes the position of the finger without releasing the finger, the touch screen panel 209 continuously detects the position where the change in capacitance occurs. Thereby, the touch screen panel 209 can detect dragging of a human finger.

  Since the basic operation as hardware has been described in the first embodiment, the same reference numerals are given and description thereof is omitted. Next, the operation of each component will be described in relation to the operation of the illumination controller 212 described with reference to FIG.

2. Operation of lighting system according to this embodiment (light source lighting control)
FIG. 19 is a flowchart showing a processing procedure of the illumination controller 212 according to the present embodiment.

  Assume that a CIE chromaticity diagram as shown in FIG. 9C is displayed on the display 210 of the illumination controller 212 at the time when this process is executed. When a position on the CIE chromaticity diagram is designated by the user, the illumination controller 212 outputs a light source control signal for turning on the light source 214 with a color corresponding to the position. The light source 214 receives the signal and lights up with the designated color.

  In step S21, the CPU 201 detects the tap of the starting point based on the output signal of the touch screen panel 209, and calculates the coordinates in step S22. In the present embodiment, it is assumed that a lighting pointer is displayed at a position corresponding to the calculated coordinates.

  In step S <b> 23, the CPU 201 stores the calculated coordinates in the memory 202 or the flash memory 203.

  In step S24, the CPU 201 communicates with the light source 14 via the communication I / F 205, and outputs a lighting control signal for lighting the light source 214 with a color corresponding to the coordinate position.

  In step S25, the CPU 201 detects the movement of the finger touch position based on the output signal of the touch screen panel 209. In step S26, the CPU 201 continuously detects the moving coordinates.

  In step S27, the CPU 201 determines whether or not the finger has been released within one second from the start of movement. If the finger is released within 1 second, the user's finger moves relatively quickly, so it may be considered that lighting in the color existing in the moving section is unnecessary. An output signal from the touch screen panel 209 is also used for this determination. If the finger has been released within 1 second, the process proceeds to step S33, and if the finger has not been released within 1 second, the process proceeds to step S27.

  In step S28, the CPU 201 determines whether or not the movement of the touch position has stopped. If stopped, the process proceeds to step S29, and if not stopped, the process returns to step S25.

  In step S29, the CPU 201 stores the calculated coordinates in the memory 202 or the flash memory 203.

  In step S30, the CPU 201 determines whether or not the finger has been released from the touch screen panel 209. If the finger has been released, the process proceeds to step S32. If the finger has not been released, the process returns to step S25.

  In step S31, the CPU 201 determines whether there are three or more stored touch positions. For example, the CPU 201 determines whether there are three or more coordinates calculated and stored in step S29. If there are three or more touch positions, the process proceeds to step S32. If not, the process returns to step S25.

  In step S <b> 32, the CPU 201 determines whether or not the touch position has moved linearly based on the change in coordinates acquired during the movement of the user's finger (touch position). In other words, the CPU 201 determines whether or not the locus of the user's finger is a straight line. If the touch position has moved linearly, the process proceeds to step S33. If the touch position has not moved linearly, the process proceeds to step S34.

  In step S <b> 33, the CPU 201 stores the calculated coordinates in the memory 202 or the flash memory 203.

  In step S34, the CPU 201 calculates an approximate arc using the calculated plurality of coordinates. FIG. 20 shows a geometric relationship for obtaining an approximate arc. When at least three points of the first tap position A, the stop position B, and the release position C are obtained, an approximate arc can be calculated. That is, the intersection point P of the straight line normal connecting the positions A and B and the straight line normal connecting the positions B and C is the center of the circle having the arc to be obtained.

  In step S35, the CPU 201 communicates with the light source 14 via the communication I / F 205, and outputs a lighting control signal for lighting in a color corresponding to a certain coordinate position on the straight line or a certain coordinate position on the approximate arc.

  In step S36, the CPU 201 determines whether or not the release coordinates have been reached. If it has reached, the process ends. If it has not reached, the process returns to step S35. In step S35, a lighting control signal for lighting in the color corresponding to the next coordinate position on the straight line or the next coordinate position on the approximate arc is output.

  FIG. 21 shows an example of transition in the arc trajectory mode using the approximate arc using the hue circle chart and an example of transition in the linear movement mode. FIG. 22 shows an example of transition in the linear movement mode using a color palette.

  Regardless of the chart, it is possible to smoothly change or switch the color of the light source while switching between the arc locus mode and the linear movement mode by executing the processing described in FIG.

  For the color pallet in FIG. 22, for example, the right end of the color pallet is red, and the color gradually transitions as it advances to the left. The transition is the same as the counterclockwise color transition of the hue circle with reference to the red position shown in FIG.

  The lighting controller according to the present embodiment described above can be briefly described as follows.

That is, the illumination controller is an illumination controller used for controlling lighting of the light source by remote operation,
A display having a display area;
A touch screen panel having an input area associated with the display area and capable of detecting a user's touch position;
When a chart including at least one color change is displayed in the display area, an approximate curve of a trajectory including the three or more touch positions based on the three or more touch positions detected by the touch screen panel. And a control circuit that controls lighting of the light source in accordance with a change in color on the chart along the approximate curve.

  The approximate curve may be a straight line or an approximate arc.

DESCRIPTION OF SYMBOLS 10 Imaging device 10a Image sensor 12 Illumination controller 14 Light source 16 PDA (information display body)
100 Illumination System 110 Illumination Device

Claims (21)

A light source;
An information display including a predetermined pattern;
When the predetermined pattern included in the image of the information display body acquired by an image sensor matches a previously held pattern, the light source is turned on and / or turned off using the information display body A lighting system comprising: a lighting controller that controls the lighting system.   The illumination system according to claim 1, further comprising an imaging device having the image sensor.   The illumination system according to claim 2, wherein the imaging device is connected to the illumination controller so as to be communicable by wire or wirelessly.   The illumination system according to claim 2, wherein the imaging device transmits a signal indicating the predetermined pattern to the illumination controller.   The illumination system according to claim 1, wherein the image sensor is provided in a camera of a mobile terminal.   The illumination system according to claim 1, wherein the pattern held in advance is a pattern registered by a user before starting control of turning on and / or turning off the light source.   The illumination system according to claim 6, wherein the previously held pattern includes a user pattern for performing an operation of turning on and / or turning off the light source.   The user pattern includes at least one of a chromaticity coordinate chart, a color chart, a handwritten chart, a dimming chart for adjusting the brightness of the light source, and a time designation chart for adjusting a lighting time of the light source. 8. The illumination system according to 7. The lighting controller
An interface for receiving a signal indicating an image of the user pattern and a user instruction;
The illumination system according to claim 8, further comprising: a storage device that stores a table in which the coordinates of the image of the user pattern specified based on the user instruction and the lighting conditions of the light source are associated with each other.   The lighting system according to claim 9, wherein the lighting condition is at least one of a color, a wavelength, a brightness, and a lighting time of the light source at the time of lighting, which is determined according to the user pattern. The previously held pattern includes a user pattern for performing an operation of turning on and / or turning off the light source,
The lighting controller
An interface for receiving a signal indicating an image of the predetermined pattern of the information display body and a user instruction for specifying coordinates on the predetermined pattern;
A storage device for storing a table in which the coordinates of the image of the user pattern and the lighting conditions of the light source are associated;
An image arithmetic circuit for determining whether or not the predetermined pattern matches the user pattern;
A control circuit that controls turning on and / or turning off of the light source under lighting conditions corresponding to coordinates on the predetermined pattern of the information display body with reference to the table when the determination results match; The illumination system according to claim 1, comprising: The interface receives a signal indicating a finder pattern image for position detection together with an image of the predetermined pattern of the information display body;
The image calculation circuit according to claim 11, wherein the image calculation circuit corrects an inclination of the image of the predetermined pattern using the finder pattern, and determines whether or not the predetermined pattern matches the user pattern. Lighting system. The lighting condition is determined according to the user pattern, and is at least one of the color, wavelength, brightness, and lighting time of the light source at the time of lighting,
The control circuit, according to the user's instruction specifying the coordinates on the predetermined pattern, with at least one lighting condition of the color, wavelength, brightness and lighting time of the light source corresponding to the coordinates The lighting system according to claim 12, wherein lighting and / or extinguishing of the light source is controlled.   The illumination system according to claim 2, wherein the imaging device is a monochrome camera. An illumination controller used in an illumination system including a light source, an image sensor, and an information display body including a predetermined pattern,
A storage device capable of storing a user pattern image for controlling turning on and off of the light source, and a table in which coordinates of the user pattern image and lighting conditions of the light source are associated with each other; ,
An interface for receiving a signal indicating an image of a predetermined pattern and an instruction of a user specifying coordinates on the predetermined pattern;
An image arithmetic circuit for determining whether or not the predetermined pattern matches the user pattern stored in the storage device;
A control circuit that controls turning on and / or turning off of the light source under lighting conditions corresponding to coordinates on the predetermined pattern of the information display body with reference to the table when the determination results match; Lighting controller comprising. An illumination controller used in an illumination system including a light source, an image sensor, and an information display body including a predetermined pattern,
A storage device capable of storing a user pattern image for controlling turning on and off of the light source, and a table in which coordinates of the user pattern image and lighting conditions of the light source are associated with each other; ,
An interface for receiving a signal indicating an image of the predetermined pattern included in the information display body;
An image arithmetic circuit for determining whether or not the predetermined pattern matches the user pattern;
If they match, control for turning on and / or turning off the light source using the information display is permitted. If not, control for turning on and / or turning off the lighting device using the information display is performed. Lighting controller with control circuit to prohibit. A lighting device controlled using an information display body including a predetermined pattern,
A light source;
An imaging device having an image sensor;
When the predetermined pattern included in the image of the information display body acquired by the image sensor matches a previously held pattern, the information display body is used to turn on the light source and / or An illumination device comprising: an illumination controller that controls turning off. light source,
Imaging device having an image sensor, and lighting and / or turning off of the light source using the predetermined pattern when a predetermined pattern in an image photographed by the imaging device matches a previously held pattern In an illumination system including an illumination controller that enables control of the information display body, which is captured by the imaging device and used to control lighting and / or extinction of the light source,
Finder pattern for position detection,
A user pattern as the predetermined pattern specified by the finder pattern, which is a chromaticity coordinate chart, a color chart, a handwritten chart, a dimming chart for adjusting the brightness of the light source, and a lighting time of the light source. And a user pattern including at least one of the time designation charts to be adjusted. A display panel;
The information display body according to claim 18, further comprising: a control circuit that displays the user pattern on the display panel. The user pattern is the chromaticity coordinate chart or the color chart,
The control circuit displays the chromaticity coordinate chart or the color chart on the display panel, and further displays, on the display panel, a user instruction for specifying coordinates on the user pattern as the predetermined pattern. The information display body according to claim 19. A computer program executed by a computer of an illumination controller used in an illumination system including a light source, an image sensor, and an information display body including a predetermined pattern,
The lighting controller
The computer;
A storage device capable of storing a user pattern image for controlling turning on and off of the light source, and a table in which coordinates of the user pattern image and lighting conditions of the light source are associated with each other; ,
An interface for receiving a signal indicating an image of a predetermined pattern and an instruction of a user specifying coordinates on the predetermined pattern;
The computer program is stored in the computer.
Determine whether the predetermined pattern matches the user pattern stored in the storage device;
If the determination results match, the lighting and / or extinguishing of the light source is controlled under lighting conditions corresponding to the coordinates on the predetermined pattern of the information display body with reference to the table.
Computer program.

Images