JPWO2016121105A1 - Installation position presentation device, installation position presentation method, and program - Google Patents

Abstract

In the first period, the control unit (102) turns on the first lighting device and the second lighting device among the plurality of lighting devices (300) with the first emission intensity, and continues with the first period. In the second period, the plurality of lighting units are lit so that the first lighting device is turned on at a second light emission intensity different from the first light emission intensity, and the second lighting device is turned on at the first light emission intensity. The apparatus (300) is controlled via a network using a plurality of identification information. The acquisition unit (103) acquires the first captured image generated in the first period and the second captured image generated in the second period. The specifying unit (104) specifies an installation position in the space of the first lighting device based on the first captured image and the second captured image.

Description

  The present invention relates to an installation position specifying device, an installation position specifying method, and a program for specifying an installation position of a lighting device identified by identification information.

  Currently, a system in which a control device controls the lighting state of a lighting device via a network is known. In such a system, the control device identifies the lighting device on the network based on identification information such as a MAC (Media Access Control) address or an IP (Internet Protocol) address. In such a system, it may be preferable that the control device grasps the position where the lighting device identified by the identification information is installed. Therefore, a technique for automatically specifying the installation position of the lighting device identified by the identification information has been proposed.

  For example, Patent Document 1 specifies the installation position based on the control content of turning on and off the plurality of light emitting devices installed in the space and the time-series captured images acquired by imaging the space. An identification device for identifying a light emitting device and a light emitting device specified by identification information is disclosed. The identification device disclosed in Patent Literature 1 detects a region that changes in conjunction with turning on / off of the light emitting device from captured images before and after the timing at which the lighting state of the light emitting device changes, and based on the detected region, the light emitting device. Specify the installation location. The identification device disclosed in Patent Literature 1 sequentially switches a plurality of light emitting devices from a light-off state to a light-on state during the identification process.

JP 2014-86149 A

  However, the light emitting device generally requires a long time to shift from the unlit state to the lit state. Therefore, the identification apparatus disclosed in Patent Document 1 requires a long time for the identification process. For this reason, the technique which specifies quickly the installation position of the illuminating device identified by identification information is desired.

  An object of the present invention is to provide an installation position specifying device, an installation position specifying method, and a program for quickly specifying an installation position of a lighting device identified by identification information.

In order to achieve the above object, an installation position specifying device according to the present invention includes:
A storage unit that stores a plurality of pieces of identification information for identifying a plurality of lighting devices installed in the space on a network;
In the first period, among the plurality of lighting devices, the first lighting device and the second lighting device are lit at a first emission intensity, and in the second period that is continuous with the first period, The plurality of lighting devices may be turned on so that the first lighting device is turned on at a second light emission intensity different from the first light emission intensity, and the second lighting device is turned on at the first light emission intensity. A control unit for controlling via the network using a plurality of identification information;
Acquisition of acquiring a first captured image generated by capturing the space in the first period and a second captured image generated by capturing the space in the second period And
A specifying unit that specifies an installation position of the first lighting device in the space based on the first captured image and the second captured image;

  In the present invention, a first captured image generated during a first period in which the first lighting device and the second lighting device among the plurality of lighting devices are lit at the first emission intensity, and the first lighting. The device is turned on at a second emission intensity different from the first emission intensity, the second lighting device is turned on at the first emission intensity, and is generated in a second period that is continuous with the first period. Based on the two captured images, the installation position in the space of the first lighting device is specified. Therefore, according to this invention, the installation position of the illuminating device identified by identification information can be specified rapidly.

It is a block diagram of the installation position specific | specification system which concerns on Embodiment 1 of this invention. It is a block diagram of the installation position specific | specification apparatus which concerns on Embodiment 1 of this invention. It is a figure for demonstrating the function of the installation position specification apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows a 1st captured image. It is a figure which shows a 2nd captured image. It is a figure which shows the various information matched with a MAC address. It is a timing chart which shows the timing which the light emission intensity of an illuminating device changes at the time of ON / OFF control. It is a timing chart which shows the timing which the light emission intensity of an illuminating device changes at the time of light control. It is a timing chart which shows the timing which the emitted light intensity of an illuminating device changes. (A) is a timing chart which shows the timing which the light emission intensity of the 1st illuminating device changes. (B) is a timing chart showing the timing when the light emission intensity of the second lighting device changes. (C) is a timing chart showing the timing at which the emission intensity of the third lighting device changes. It is a flowchart which shows the installation position specific process which the installation position specific apparatus which concerns on Embodiment 1 of this invention performs. It is a figure which shows the image which the installation position specific device which concerns on Embodiment 1 of this invention shows. It is a flowchart which shows the installation position specific process which the installation position specific apparatus which concerns on Embodiment 2 of this invention performs. It is a figure which shows the image which the installation position specific device which concerns on Embodiment 2 of this invention shows.

(Embodiment 1)
First, the configuration of the installation position specifying system 1000 according to Embodiment 1 of the present invention will be described with reference to FIG. The installation position specifying system 1000 is a system that specifies the installation position of the lighting device 300 identified by the identification information. The identification information is information for identifying the lighting device 300 on the network 400, and is, for example, a MAC (Media Access Control) address or an IP (Internet Protocol) address. Both the MAC address and the IP address are unique addresses given to the lighting device 300. In this embodiment, it is assumed that the identification information is a MAC address.

  Moreover, in this embodiment, the installation position of the illuminating device 300 shall be an installation position of the illuminating device 300 in real space. Note that the installation position of the illumination device 300 in the real space is calculated from the position of the illumination device 300 on the captured image obtained by imaging the space including the illumination device 300. That is, in this embodiment, the position and angle at which the imaging device 200 is installed are determined in advance, and the installation position of the lighting device 300 in the real space is uniquely calculated from the position of the lighting device 300 on the captured image. Shall be. That is, it is assumed that the installation position specifying device 100 stores a calculation formula and a coordinate conversion table for calculating the installation position of the illumination device 300 in the real space. The installation position specifying system 1000 includes an installation position specifying device 100 and an imaging device 200.

  The installation position specifying device 100 is a device that specifies the installation position of the illumination device 300 identified by the identification information based on the captured image supplied from the imaging device 200. The installation position specifying device 100 can be said to be a device that identifies the illumination device 300 identified by the identification information and the illumination device 300 installed in the real space. The installation position specifying device 100 communicates with the lighting device 300 via the network 400. Further, the installation position specifying device 100 communicates with the imaging device 200 by serial communication. The installation position specifying device 100 is, for example, a personal computer, a smartphone, or a tablet terminal. Hereinafter, the configuration of the installation position specifying device 100 will be described with reference to FIG.

  As shown in FIG. 2, the installation position specifying device 100 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a flash memory 14, an RTC (Real Time Clock) 15, A touch screen 16, a network interface 17, and a serial communication interface 18 are provided. Each component provided in the installation position specifying device 100 is connected to each other via a bus.

  The CPU 11 controls the overall operation of the installation position specifying device 100. The CPU 11 operates according to a program stored in the ROM 12 and uses the RAM 13 as a work area. The CPU 11 controls the light emission intensity of the lighting device 300 via the network interface 17. In addition, the CPU 11 acquires a captured image from the imaging device 200 via the serial communication interface 18. The ROM 12 stores a program and data for controlling the overall operation of the installation position specifying device 100. The RAM 13 functions as a work area for the CPU 11. That is, the CPU 11 temporarily writes programs and data in the RAM 13 and refers to these programs and data as appropriate.

  The flash memory 14 is a nonvolatile memory that stores various types of information. The flash memory 14 stores a calculation formula for calculating the installation position of the lighting device 300, a coordinate conversion table, a MAC address of the lighting device 300, and the like. The RTC 15 is a time measuring device. The RTC 15 incorporates a battery, for example, and continues timing while the power of the installation position specifying device 100 is off. The RTC 15 includes an oscillation circuit including a crystal oscillator, for example.

  The touch screen 16 detects a touch operation performed by the user and supplies a signal indicating the detection result to the CPU 11. The touch screen 16 displays an image based on the image signal supplied from the CPU 11 or the like. As described above, the touch screen 16 functions as a user interface of the installation position specifying device 100.

  The network interface 17 is an interface for connecting the installation position specifying device 100 to the network 400. The installation position specifying device 100 communicates with the lighting device 300 connected to the network 400 via the network 400. The network interface 17 includes a LAN (Local Area Network) interface such as a NIC (Network Interface Card).

  The serial communication interface 18 is an interface for connecting the installation position specifying device 100 to the imaging device 200 by serial communication. The serial communication interface 18 includes an interface corresponding to a standard such as USB (Universal Serial Bus) and IEEE (Institute of Electrical and Electronic Engineers) 1394.

  The imaging device 200 is a device that captures an image of a space where the lighting device 300 is installed and generates a captured image. The imaging device 200 is installed at a position and an angle at which all the illumination devices 300 are in the imaging range. In the present embodiment, the imaging device 200 generates a captured image every predetermined cycle (for example, about 10 msec) and supplies the generated captured image to the installation position specifying device 100. The imaging device 200 is a camera provided with a USB interface, for example.

  The lighting device 300 is a device that illuminates the surroundings according to control by the installation position specifying device 100. The light emission intensity of the lighting device 300 can be adjusted in the range of 0% (no light emission) to 100% (maximum intensity). That is, the lighting device 300 has a dimming function. In the present embodiment, in order to facilitate understanding, the light emission intensity of the illumination device 300 is controlled by the installation position specifying device 100 to any one of 0%, 50%, and 100%. In the present embodiment, the number of lighting devices 300 is 20. In any of the 20 lighting devices, the light emission intensity is controlled by the installation position specifying device 100. In addition, all of the 20 lighting devices are installed on the ceiling and are disposed within the imaging range of the imaging device 200. The lighting device 300 includes a LAN interface such as a NIC and has a function of connecting to the network interface 17. The illumination device 300 includes a fluorescent lamp and an LED (Light Emitting Diode).

  The network 400 is a network such as a wireless LAN constructed in a factory or a building, and is a network for the installation position specifying device 100 and the 20 lighting devices 300 to communicate with each other.

  Next, basic functions of the installation position specifying device 100 will be described with reference to FIG. Functionally, the installation position specifying device 100 includes a storage unit 101, a control unit 102, an acquisition unit 103, a specifying unit 104, a presentation unit 105, and a collection unit 106.

  The storage unit 101 stores a plurality of pieces of identification information for identifying a plurality of lighting devices 300 installed in the space on the network 400. In the present embodiment, it is assumed that 20 MAC addresses each identifying one of the 20 lighting devices 300 are stored in the storage unit 101. Note that the MAC address stored in the storage unit 101 is collected by the collection unit 106. The function of the storage unit 101 is realized by the flash memory 14, for example.

  The control unit 102 controls the plurality of lighting devices 300 via the network 400 using a plurality of identification information. Specifically, in the first period, the control unit 102 turns on (emits light) the first lighting device and the second lighting device among the plurality of lighting devices 300 with the first light emission intensity. The plurality of lighting devices 300 are controlled. The second lighting device is a lighting device different from the first lighting device among the plurality of lighting devices 300. In the present embodiment, the second lighting device is assumed to be all lighting devices other than the first lighting device among the plurality of lighting devices 300. Further, in the second period, the control unit 102 turns on the first lighting device with a second light emission intensity different from the first light emission intensity, and turns on the second lighting device with the first light emission intensity. In this manner, the plurality of lighting devices 300 are controlled. The second period is a period that is continuous with the first period. On the other hand, each of the plurality of lighting devices 300 is lit at a light emission intensity corresponding to the control content according to control by the control unit 102.

  It is preferable that the first emission intensity and the second emission intensity have a difference equal to or greater than a predetermined threshold (for example, 50% of the maximum emission intensity). The first emission intensity is, for example, 50% of the maximum emission intensity. The second emission intensity is, for example, the maximum emission intensity (100%). The specific lighting device 300 is a lighting device 300 to which one MAC address selected from 20 MAC addresses among the 20 lighting devices 300 is assigned. In addition, whenever the control part 102 selects one MAC address, the process which specifies the installation position of the illuminating device 300 identified by the selected MAC address is performed. That is, the control unit 102 sequentially selects all the MAC addresses until the installation positions of all the lighting devices 300 are specified. The first lighting device is a lighting device 300 to which the selected MAC address is assigned, and the second lighting device is a lighting device 300 other than the lighting device 300 to which the selected MAC address is assigned. . The function of the control unit 102 is realized by the cooperation of the CPU 11 and the network interface 17, for example.

  Here, the imaging apparatus 200 generates a first captured image by capturing the space in the first period. Further, the imaging device 200 generates a second captured image by capturing the space in the second period.

  The acquisition unit 103 acquires the first captured image and the second captured image generated by the imaging apparatus 200. The function of the acquisition unit 103 is realized by, for example, the cooperation of the CPU 11 and the network interface 17.

  The identifying unit 104 identifies the installation position of the first lighting device 300 in the space based on the first captured image and the second captured image. For example, the specifying unit 104 specifies an image region in which the difference in luminance value is the maximum between the first captured image and the second captured image. For example, the specifying unit 104 obtains a pixel whose luminance value difference is equal to or greater than a threshold value between the first captured image and the second captured image (hereinafter referred to as “luminance value change pixel”). Then, the specifying unit 104 groups the luminance value change pixels so that adjacent luminance value change pixels belong to the same group, and obtains an area where the luminance value has changed (hereinafter referred to as “brightness value change area”). Note that the size of the luminance value change area is equal to or greater than a predetermined number of pixels.

  Here, the specifying unit 104 obtains an average luminance value in each of the plurality of luminance value changing regions for each of the first captured image and the second captured image. Then, the specifying unit 104 obtains a difference between the average luminance value in the first captured image and the average luminance value in the second captured image for each of the plurality of luminance value change regions. The identifying unit 104 identifies a brightness value change area having a maximum difference in average brightness values from among the plurality of brightness value change areas. And the specific | specification part 104 specifies the position in the said space corresponding to the specified luminance value change area | region as the said installation position. The installation position specified by the specifying unit 104 may be a relative installation position in the real space. The function of the specifying unit 104 is realized, for example, when the CPU 11 executes a program stored in the ROM 12.

  The presentation unit 105 presents the installation position of the lighting device 300 in the space. For example, the presentation unit 105 presents an image that clearly indicates the installation position of the lighting device 300 in the real space using coordinates. Or the presentation part 105 presents the image which specifies the position on the picked-up image of the illuminating device 300, for example. For example, the presentation unit 105 presents a captured image, and each time the installation position is acquired, information that clearly indicates the acquired installation position is displayed on the captured image. As described above, the presentation unit 105 presents the relative positional relationship of the lighting device 300 in the real space. The function of the presentation unit 105 is realized, for example, by the cooperation of the CPU 11 and the touch screen 16.

  The collection unit 106 collects identification information from each of the plurality of lighting devices 300 via the network 400. For example, the collection unit 106 transmits a command for requesting transmission of a MAC address to all the lighting devices 300 connected to the network 400. Then, the collection unit 106 acquires 20 MAC addresses by receiving frames including MAC addresses from the 20 lighting devices 300 connected to the network 400. The collection unit 106 is realized by, for example, the cooperation of the CPU 11 and the network interface 17.

  Next, the first captured image will be described with reference to FIG. The first captured image is a captured image generated by the imaging device 200 in the first period (a period in which all the lighting devices 300 are lit at the first emission intensity). In FIG. 4, the first captured image is shown as an image 500.

  The image 500 is an image having 640 pixels in the x-axis direction and 480 pixels in the y-axis direction. The image 500 includes regions 311, 312, 313, 314, 315, 321, 322, 323, 324, 325, 331, 332, 333, 334, 335, 341, 342, 343, 344, 345 (hereinafter referred to as “region 311- 345 "). Each of the areas 311 to 345 is an area indicating one of the 20 lighting devices 300. The luminance values in the areas 311 to 345 are basically higher than other areas included in the image 500.

  Next, the second captured image will be described with reference to FIG. The second captured image is in a second period (a period in which one lighting device 300 is lit at the second emission intensity and all other lighting devices 300 are lit at the first emission intensity). 3 is a captured image generated by the imaging apparatus 200. The first captured image and the second captured image are images that are generated when the same space (the same imaging region) is captured. In FIG. 5, the second captured image is shown as an image 510.

  The image 510 is an image having 640 pixels in the x-axis direction and 480 pixels in the y-axis direction. The image 510 includes areas 311 to 345. The luminance values in the areas 311 to 345 are basically higher than other areas included in the image 510. The luminance value (for example, average luminance value) of the region 334 in the captured image 510 is higher than the luminance value (for example, average luminance value) of the region 334 in the captured image 500. This is because the image 500 is an image generated when the lighting device 300 displayed in the region 334 is lit at the first emission intensity, whereas the image 510 is displayed in the region 334. This is because the image is generated when the lighting device 300 is lit with the second light emission intensity higher than the first light emission intensity.

  The brightness values of the areas other than the area 334 basically do not change between the image 500 and the image 510. That is, when the luminance value difference between the image 500 and the image 510 is taken, the region where the luminance value difference is the largest (in this example, the region 334) is the region where the emission intensity changes most, and the lighting device 300 is It becomes the area to show. That is, when the installation position specifying device 100 changes the light emission intensity of the lighting device 300 identified by a certain MAC address from the first light emission intensity to the second light emission intensity, the first captured image and the second image captured The position of the region where the luminance value changes most with the image is estimated as the position on the captured image of the illumination device 300. And the installation position specific | specification apparatus 100 calculates the installation position in real space from the estimated position using a predetermined formula and a table.

  Next, various types of information associated with the MAC address by the installation position specifying device 100 will be described with reference to FIG. As illustrated in FIG. 6, the information associated with the MAC address includes, for example, an area, coordinates (x, y), position (row, column), and ID. The region is a region on the captured image (image 500 or image 510). The coordinates (x, y) are the x and y coordinates of the center of this area on the captured image. The position (row, column) is a row number and a column number when the plurality of lighting devices 300 are installed in a grid pattern (for example, 4 (rows) × 5 (columns)) on the ceiling or the like. ID is ID of the illuminating device 300 determined based on a position (row, column).

  In the record in the first row in FIG. 6, the MAC address is 11223344, the area is 334, the coordinates (x, y) are (492, 283), and the position (row, column) is (3,4). In this example, the ID is 14. In other words, the record in the first row is displayed on the area 334 whose center coordinates are (492, 283) on the captured image of the illumination device 300 identified by the MAC address 112223344, and Of these, it is installed at the position of the third row and the fourth column, and 14 is given as the ID. The area and the coordinates (x, y) are determined each time one lighting device 300 is detected on the captured image. On the other hand, the position (row, column) and ID are determined after all the illumination devices 300 are detected on the captured image.

  Next, with reference to FIG. 7A and FIG. 7B, the reason why the lighting device 300 performs the light control instead of the ON / OFF control will be described. FIG. 7A is a timing chart showing the timing at which the light emission intensity of the lighting device 300 changes during ON / OFF control. The ON control is control for setting the light emission intensity of the lighting device 300 to the maximum light emission intensity (100%). The OFF control is control for setting the light emission intensity of the lighting device 300 to the minimum light emission intensity (0%). In the ON / OFF control, the light emission intensity of the lighting device 300 is not controlled to an intermediate light emission intensity (for example, 50%) between the maximum light emission intensity (100%) and the minimum light emission intensity (0%). FIG. 7A shows an example in which the lighting apparatus 300 is OFF-controlled, then ON-controlled, and then OFF-controlled. Details will be described below.

  First, the installation position specifying device 100 transmits a control signal for ON control to the lighting device 300 at t11. However, it takes time for the lighting device 300 to change from the OFF state to the ON state, that is, from the non-light emitting state to the light emitting state. Therefore, the OFF state is maintained from t11 to t12 when Ton11 elapses. Ton11 is, for example, a delay time required for driving the light emitting element after the driving circuit of the light emitting element receives a driving instruction. The lighting device 300 increases the light emission intensity from t12 to t13 when Ton12 elapses, and enters the ON state at t13. Ton12 is a rise time until the light emitting element changes from the OFF state to the ON state. Here, the sum of Ton11 and Ton12 is Ton13. This Ton13 is a turn-on time required from when the ON control is instructed until the lighting device 300 shifts to the ON state.

  The installation position specifying device 100 transmits a control signal for OFF control to the lighting device 300 at t14. Then, the illumination device 300 decreases the emission intensity from t14 to t15 when Toff11 elapses, and enters the OFF state at t15. Toff11 is a fall time until the light emitting element changes from the ON state to the OFF state. At the fall time, there is no delay time as at the rise time, and the fall time becomes the turn-off time.

  FIG. 7B is a timing chart showing timings at which the light emission intensity of the lighting apparatus 300 changes during the light control. In the dimming control, the light emission intensity of the illumination device 300 is controlled to an intermediate light emission intensity (for example, 50%) between the maximum light emission intensity (100%) and the minimum light emission intensity (0%). FIG. 7B shows the light emission intensity of the lighting device 300 as the minimum light emission intensity (0%) → the intermediate light emission intensity (50%) → the maximum light emission intensity (100%) → the intermediate light emission intensity (50%) → the minimum light emission intensity ( An example of changing in the order of 0%) is shown. Details will be described below.

  First, the installation position specifying device 100 transmits a control signal for controlling to an intermediate light emission intensity (50%) to the lighting device 300 at t21. However, it takes time until the light emission intensity of the lighting device 300 changes from the minimum light emission intensity (0%) to the intermediate light emission intensity (50%), that is, from the non-light emission state to the emission state. Therefore, the illumination device 300 maintains the minimum light emission intensity (0%) from t21 to t22 when Ton21 elapses. Ton21 is, for example, a delay time required for driving the light emitting element after the driving circuit of the light emitting element receives a driving instruction.

  The lighting device 300 increases the emission intensity from t22 to t23 when Ton22 elapses, and the emission intensity becomes an intermediate emission intensity (50%) at t23. Ton22 is a rise time until the light emission intensity of the light emitting element reaches the minimum light emission intensity (0%) to the intermediate light emission intensity (50%). Here, the sum of Ton21 and Ton22 is Ton23. The Ton 23 is turned on until the emission intensity of the lighting apparatus 300 shifts to the intermediate emission intensity (50%) after the instruction to control the minimum emission intensity (0%) to the intermediate emission intensity (50%) is given. It's time.

  Next, the installation position specifying device 100 transmits a control signal for setting the light emission intensity to the maximum light emission intensity (100%) to the lighting apparatus 300 at t24. Then, the lighting device 300 increases the emission intensity from t24 to t25 when Ton24 elapses, and the emission intensity reaches the maximum emission intensity (100%) at t25. Ton24 is the rise time until the light emission intensity of the light emitting element reaches the maximum light emission intensity (100%) from the intermediate light emission intensity (50%).

  The installation position specifying device 100 transmits a control signal for setting the light emission intensity to an intermediate light emission intensity (50%) to the lighting apparatus 300 at t26. Then, the illumination device 300 decreases the emission intensity from t26 to t27 when Toff21 elapses, and the emission intensity becomes an intermediate emission intensity (50%) at t27. Toff21 is a fall time until the emission intensity reaches the intermediate emission intensity (50%) from the maximum emission intensity (100%).

  The installation position specifying device 100 transmits a control signal for setting the light emission intensity to the minimum light emission intensity (0%) to the lighting apparatus 300 at t28. Then, the illumination device 300 decreases the emission intensity from t28 to t29 when Toff22 passes, and the emission intensity becomes the minimum emission intensity (0%) at t29. Toff22 is a fall time until the emission intensity reaches the minimum emission intensity (0%) from the intermediate emission intensity (50%).

  FIG. 7B shows that the time (Ton23) required to change the emission intensity from the minimum emission intensity (0%) to the intermediate emission intensity (50%) is from the intermediate emission intensity (50%) to the maximum emission intensity (100%). This indicates that it is longer than the time (Ton24) required to complete the process. That is, the time required to shift from the non-light emitting state to the light emitting state is much longer than the time required to change the light emission intensity in the light emitting state. For this reason, in this embodiment, the installation position specifying device 100 maintains the lighting device 300 in a light emitting state, and controls the lighting device 300 to switch only the light emission intensity.

  Next, with reference to FIG. 8, a procedure for sequentially switching the light emission intensities of the plurality of lighting devices 300 will be described. FIG. 8A is a timing chart showing timing at which the light emission intensity of the first lighting device 300 changes. FIG. 8B is a timing chart showing timing at which the light emission intensity of the second lighting device 300 changes. FIG. 8C is a timing chart showing timing at which the light emission intensity of the third lighting device 300 changes. The first lighting device 300 is the lighting device 300 to which 11223344 is assigned as the MAC address. The second lighting device 300 is the lighting device 300 to which 22 aabbcc is assigned as the MAC address. The third lighting device 300 is the lighting device 300 to which 445566677 is assigned as the MAC address. In the present embodiment, it is assumed that the light emission intensity is changed in order from the lighting device 300 with the smallest MAC address. That is, in the present embodiment, it is assumed that the first lighting device is selected in order from the lighting device 300 with the smallest MAC address.

  The installation position specifying device 100 transmits a control signal for changing the emission intensity from the minimum emission intensity (0%) to the intermediate emission intensity (50%) to all the lighting devices 300 at t31. Then, at t32 when a predetermined delay time has elapsed from t31, the emission intensity of all the lighting devices 300 becomes an intermediate emission intensity (50%). In FIG. 8, there is a delay time (for example, Ton21) required to shift from the non-light emitting state to the light emitting state, but there is no rise time (Ton22, Ton24) or fall time (Toff21, Toff22). .

  The installation position specifying device 100 acquires the first captured image at t33 within a period (first period) from t32 to t34. The first picked-up image is a picked-up image picked up in a state where the light emission intensity of all the lighting devices 300 is an intermediate light emission intensity (50%). The installation position specifying device 100 transmits a control signal for changing the light emission intensity from the intermediate light emission intensity (50%) to the maximum light emission intensity (100%) to the first lighting apparatus 300 at t34. Then, at t34, the light emission intensity of the first lighting device 300 becomes the maximum light emission intensity (100%).

  The installation position specifying device 100 acquires a second captured image at t35 within a period (second period) from t34 to t36. In the second captured image, the light emission intensity of the first lighting device 300 is the maximum light emission intensity (100%), and the light emission intensity of all the other lighting devices 300 is the intermediate light emission intensity (50%). It is a captured image. The installation position specifying device 100 transmits a control signal for changing the emission intensity from the maximum emission intensity (100%) to the intermediate emission intensity (50%) to the first lighting device 300 at t36. Then, at t36, the emission intensity of the first lighting apparatus 300 becomes an intermediate emission intensity (50%).

  The installation position specifying device 100 transmits a control signal for changing the emission intensity from the intermediate emission intensity (50%) to the maximum emission intensity (100%) to the second illumination apparatus 300 at t37. Then, at t37, the emission intensity of the second illumination device 300 becomes the maximum emission intensity (100%).

  The installation position specifying device 100 acquires a second captured image at t38 within a period (second period) from t37 to t39. In the second captured image, the light emission intensity of the second lighting device 300 is the maximum light emission intensity (100%), and the light emission intensity of all the other lighting devices 300 is the intermediate light emission intensity (50%). It is a captured image. The installation position specifying device 100 transmits a control signal for changing the emission intensity from the maximum emission intensity (100%) to the intermediate emission intensity (50%) to the second illumination apparatus 300 at t39. Then, at t39, the light emission intensity of the second lighting device 300 becomes an intermediate light emission intensity (50%).

  The installation position specifying device 100 transmits a control signal for changing the emission intensity from the intermediate emission intensity (50%) to the maximum emission intensity (100%) to the third lighting apparatus 300 at t40. Then, at t40, the emission intensity of the third lighting device 300 becomes the maximum emission intensity (100%).

  The installation position specifying device 100 acquires the second captured image at t41 in the period from t40 to t42 (second period). In the second captured image, the light emission intensity of the third lighting device 300 is the maximum light emission intensity (100%), and the light emission intensity of all the other lighting devices 300 is the intermediate light emission intensity (50%). It is a captured image. The installation position specifying device 100 transmits a control signal for changing the emission intensity from the maximum emission intensity (100%) to the intermediate emission intensity (50%) to the third illumination apparatus 300 at t42. Then, at t42, the emission intensity of the third lighting device 300 becomes an intermediate emission intensity (50%). Hereinafter, the above-described processing is repeated for all the illumination devices 300 until the above-described second captured image is acquired.

  Next, the installation position specifying process executed by the installation position specifying device 100 will be described with reference to the flowchart shown in FIG. The installation position specifying process is started in response to, for example, the installation position specifying device 100 being powered on.

  First, the CPU 11 acquires all MAC addresses (step S101). For example, the CPU 11 transmits a command including a MAC address transmission request to all the lighting devices 300 connected to the network 400 via the network interface 17. And CPU11 receives the flame | frame containing a MAC address from all the illuminating devices 300 via the network interface 17. FIG. The CPU 11 stores all acquired MAC addresses in the flash memory 14.

  CPU11 will start imaging, if the process of step S101 is completed (step S102). For example, the CPU 11 instructs the imaging device 200 to start imaging via the serial communication interface 18. On the other hand, when receiving this instruction, the imaging device 200 starts imaging, and thereafter supplies the captured image acquired periodically to the installation position specifying device 100.

  CPU11 will light all the illuminating devices 300 with 1st light emission intensity | strength, if the process of step S102 is completed (step S103). For example, the CPU 11 transmits a control signal including an instruction to emit light at the first light emission intensity to all the lighting devices 300 via the network interface 17.

  CPU11 will acquire a 1st captured image, if the process of step S103 is completed (step S104). For example, the CPU 11 acquires a first captured image from the imaging device 200 via the serial communication interface 18. The CPU 11 stores the acquired first captured image in the flash memory 14.

  When completing the process in step S104, the CPU 11 selects one MAC address (step S105). For example, the CPU 11 selects the smallest MAC address that has not been selected from the 20 MAC addresses stored in the flash memory 14.

  When completing the process in step S105, the CPU 11 turns on the first lighting device with the second light emission intensity (step S106). The first lighting device is the lighting device 300 identified by the selected MAC address. For example, the CPU 11 transmits a control signal including an instruction to emit light at the second emission intensity to the selected MAC address. On the other hand, the first lighting device that has received this control signal lights up with the second emission intensity.

  CPU11 will acquire a 2nd captured image, if the process of step S106 is completed (step S107). For example, the CPU 11 acquires a second captured image from the imaging device 200 via the serial communication interface 18. The CPU 11 stores the acquired second captured image in the flash memory 14.

  When the CPU 11 completes the process of step S107, the CPU 11 identifies an image area whose luminance value has changed (step S108). For example, the CPU 11 compares the first image area and the second image area stored in the flash memory 14 and identifies the image area having the largest change in luminance value.

  When completing the process of step S108, the CPU 11 specifies the installation position from the specified image area (step S109). For example, the CPU 11 specifies the installation position in the real space from the coordinates of the specified image area according to a predetermined calculation formula or table. Note that when the installation positions of the 20 lighting devices 300 are determined in advance, the CPU 11 may specify the installation positions in the form of what row and what column, for example, as shown in FIG. Good.

  When completing the process of step S109, the CPU 11 associates the MAC address with the installation position (step S110). For example, when a table as shown in FIG. 6 is stored in the flash memory 14, the CPU 11 updates this table.

  When completing the process of step S110, the CPU 11 turns on the first lighting device with the first emission intensity (step S111). For example, the CPU 11 transmits a control signal including an instruction to emit light at the first emission intensity to the selected MAC address. On the other hand, the first lighting device that has received this control signal lights up with the first emission intensity.

  When completing the process in step S111, the CPU 11 determines whether all the MAC addresses have been selected (step S112). When determining that all the MAC addresses have not been selected (step S112: NO), the CPU 11 returns the process to step S105. And CPU11 repeats the process of step S105-step S112 until it acquires the 2nd captured image about all the MAC addresses.

  On the other hand, when determining that all the MAC addresses have been selected (step S112: YES), the CPU 11 presents the installation positions of all the illumination devices 300 (step S113). For example, the CPU 11 controls the touch screen 16 to present the image 520 shown in FIG.

  The image 520 is an image 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611 indicating the position of the illumination device 300 in the captured image (first captured image or second captured image). , 612, 613, 614, 615, 616, 617, 618, 619, 620 (hereinafter referred to as “images 601 to 620”). Each of the images 601 to 620 is an image that is synthesized in the vicinity of the image area indicating the corresponding lighting device 300 and clearly indicates the ID of the corresponding lighting device 300. For example, the image 601 is an image that is synthesized in the vicinity of the region 311 and clearly indicates 1 that is the ID of the lighting device 300 shown in the region 311. CPU11 will complete | finish an installation position specific process, if the process of step S113 is completed.

  As described above, in the present embodiment, the first lighting device and the second lighting device among the plurality of lighting devices 300 are generated in the first period in which the first lighting intensity is turned on. The captured image and the first lighting device are turned on at a second light emission intensity different from the first light emission intensity, the second lighting device 300 is turned on at the first light emission intensity, and is continuous with the first period. Based on the second captured image generated in the second period, the installation position of the first lighting device 300 in the space is specified. Here, the time from when the first lighting device 300 is lit at the first light emission intensity to when the first lighting device 300 is lit at the second light emission intensity is relatively short. Therefore, according to this embodiment, the installation position of the illumination device 300 identified by the identification information can be quickly identified.

  In the present embodiment, both the first captured image and the second captured image are images captured during a period in which all the lighting devices 300 are lit. For this reason, in both the first captured image and the second captured image, an image region indicating all the illumination devices 300 is included. Therefore, even if there is a deviation between the position and angle of the imaging device 200 when the first captured image is generated and the position and angle of the imaging device 200 when the second captured image is generated. Alignment between the first captured image and the second captured image is easy.

  Further, the imaging apparatus 200 may be an apparatus that automatically adjusts parameters such as exposure time and gain according to the luminance value of the entire image, and the user cannot adjust these parameters. Even when such an image pickup apparatus 200 is employed, in the present embodiment, the overall brightness value of the first captured image and the overall brightness value of the second captured image are not significantly different from each other. Absent. The reason is that in this embodiment, the difference between the first captured image and the second captured image is that all the lighting devices 300 are lit at the first emission intensity or only one lighting device 300 is the first. This is because the only difference is whether the other lighting devices 300 are lit at the first luminescence intensity. In addition, as such a malfunction, for example, a problem that the brightness value cannot be normally compared between the first captured image and the second captured image by adjusting these parameters automatically is considered. It is done.

  In the present embodiment, the position in the space corresponding to the image area where the difference in luminance value between the first captured image and the second captured image is maximum is specified as the installation position. Therefore, according to this embodiment, the installation position of the illumination device 300 identified by the identification information can be quickly and accurately specified.

(Embodiment 2)
In the first embodiment, an example in which one image area indicating the lighting device 300 is specified every time one MAC address is selected has been described. In the present invention, for example, first, after all the image areas each indicating one of all the lighting devices 300 are specified, each time one MAC address is selected, the correspondence between the MAC address and the image area May be specified. Hereinafter, processing different from that of the first embodiment will be described.

  The control unit 102 controls the plurality of lighting devices 300 via the network 400 using the plurality of identification information so that the plurality of lighting devices 300 are lit at the third emission intensity in the third period. The third light emission intensity is, for example, the maximum light emission intensity of the plurality of lighting devices 300. In this case, the imaging device 200 generates a third captured image by capturing the space in the third period. The acquisition unit 103 acquires the third captured image generated by the imaging device 200.

  Then, the specifying unit 104 specifies a plurality of candidate areas representing the plurality of lighting devices 300 in the third captured image. Further, the specifying unit 104 specifies a candidate area having a maximum difference in average luminance value between the first captured image and the second captured image among the plurality of specified candidate areas. Then, the specifying unit 104 specifies a position in the space corresponding to the specified candidate area as the installation position.

  Next, the installation position specifying process executed by the installation position specifying apparatus 100 will be described with reference to the flowchart shown in FIG. The installation position specifying process is started in response to, for example, the installation position specifying device 100 being powered on.

  First, the CPU 11 acquires all MAC addresses (step S201). CPU11 will start imaging, if the process of step S201 is completed (step S202).

  CPU11 will light all the illuminating devices 300 by 3rd light emission intensity | strength, if the process of step S202 is completed (step S203). The third emission intensity is, for example, the maximum emission intensity (100%). For example, the CPU 11 transmits a control signal including an instruction to emit light with the third light emission intensity to all the lighting devices 300 via the network interface 17.

  CPU11 will acquire a 3rd captured image, if the process of step S203 is completed (step S204). For example, the CPU 11 acquires a third captured image from the imaging device 200 via the serial communication interface 18. The CPU 11 stores the acquired third captured image in the flash memory 14.

  CPU11 will identify all the candidate area | regions, if the process of step S204 is completed (step S205). A candidate area | region is an area | region on the 3rd captured image considered that the illuminating device 300 is shown. The candidate area is specified by, for example, the grouping described above. Specifically, the CPU 11 specifies an image region that is an aggregate of pixels having a luminance value equal to or greater than a threshold value on the third captured image. On the third captured image, 20 lighting devices 300 that are lit at the maximum light emission intensity (100%) are shown. Accordingly, 20 candidate areas having a luminance value higher than that of the surrounding area are identified on the third captured image.

  When completing the process in step S205, the CPU 11 creates an installation position map from the identified candidate area (step S206). The installation position map is, for example, a map that clearly specifies the identified candidate area on the captured image (for example, the third captured image). Alternatively, the installation position map may be a map that simply shows how many rows × columns all the illumination devices 300 are installed.

  CPU11 will light all the illuminating devices 300 by 1st light emission intensity | strength, if the process of step S206 is completed (step S207). CPU11 will acquire a 1st captured image, if the process of step S207 is completed (step S208). When completing the process in step S208, the CPU 11 selects one MAC address (step S209). When completing the process of step S209, the CPU 11 turns on the first lighting device (the lighting device 300 to which the selected MAC address is assigned) with the second light emission intensity (step S210). CPU11 will acquire a 2nd captured image, if the process of step S210 is completed (step S211).

  CPU11 will identify the candidate area | region where the luminance value changed most among candidate areas, if the process of step S211 is completed (step S212). For example, the CPU 11 identifies the candidate area having the maximum average luminance value among the 20 candidate areas as the candidate area having the largest luminance value change.

  CPU11 will identify an installation position from the identified candidate area | region, if the process of step S212 is completed (step S213). When completing the process of step S213, the CPU 11 associates the MAC address with the installation position (step S214). When completing the process in step S214, the CPU 11 turns on the first lighting device (the lighting device 300 to which the selected MAC address is assigned) with the first emission intensity (step S215).

  When completing the process in step S215, the CPU 11 determines whether all the MAC addresses have been selected (step S216). When determining that all the MAC addresses have not been selected (step S216: NO), the CPU 11 returns the process to step S209. And CPU11 repeats the process of step S209-step S216 until it acquires the 2nd captured image about all the MAC addresses.

  On the other hand, when determining that all the MAC addresses have been selected (step S216: YES), the CPU 11 presents the installation positions of all the illumination devices 300 (step S217). For example, the CPU 11 controls the touch screen 16 to present an image 530 shown in FIG.

  The image 530 is a diagram simply showing that 20 lighting devices 300 are arranged in 4 rows × 5 columns. The image 530 includes images 701, 702, 703, 704, 705, 706, 707, 708, 709, 710, 711, 712, 713, 714, 715, 716, 717, showing the positional relationship of the 20 lighting devices 300. 718, 719, and 720 (hereinafter referred to as “images 701 to 720”). Each of the images 701 to 720 is an image that indicates a relative positional relationship with each other on the image 530 and clearly indicates the ID and MAC address of the corresponding lighting device 300. For example, the image 701 is an image that clearly indicates that the ID of the lighting device 300 arranged in the first row and the first column is 1 and the MAC address is 66667777. CPU11 complete | finishes an installation position specific process, if the process of step S217 is completed.

  As described above, in the present embodiment, a plurality of candidates representing the plurality of lighting devices 300 in the third captured image acquired in the third period in which the plurality of lighting devices 300 are lit at the third emission intensity. An area is identified, and the position in the space corresponding to the candidate area having the largest difference in average luminance value between the first captured image and the second captured image among the plurality of identified candidate areas is It is specified as the installation position. Therefore, according to this embodiment, the installation position of the illumination device 300 identified by the identification information can be quickly and accurately specified.

  In the present embodiment, the third light emission intensity is set to the maximum light emission intensity (100%) of the plurality of lighting devices 300. Therefore, according to the present embodiment, the luminance values of the plurality of image areas representing each of the plurality of lighting devices 300 are clearly larger than the surrounding areas, and the plurality of image areas are erroneously specified. It is suppressed. Therefore, according to this embodiment, the installation position of the illumination device 300 identified by the identification information can be quickly and accurately specified.

(Modification)
As mentioned above, although embodiment of this invention was described, when implementing this invention, a deformation | transformation and application with a various form are possible.

  In the present invention, which part of the configuration, function, and operation described in the first embodiment and the second embodiment is adopted is arbitrary. Further, in the present invention, in addition to the configuration, function, and operation described above, further configuration, function, and operation may be employed. In addition, the configurations, functions, and operations described in the first and second embodiments can be freely combined.

  In the first embodiment, the example in which the first emission intensity is 50% of the maximum emission intensity and the second emission intensity is the maximum emission intensity has been described. In the present invention, any light emission intensity other than 0% of the maximum light emission intensity can be adopted as the first light emission intensity or the second light emission intensity. However, it is desirable that the first emission intensity and the second emission intensity have a difference equal to or greater than a predetermined threshold (for example, several tens of percent).

  Further, the first emission intensity may be greater than the second emission intensity. In this case, for example, in the second embodiment, the first emission intensity and the third emission intensity are set to the maximum emission intensity, and the second emission intensity is set to 50% of the maximum emission intensity, thereby performing steps S207 to S208. This process can be omitted.

  In the first embodiment, the first lighting device is one lighting device among the plurality of lighting devices 300, and the second lighting device is all lighting devices other than the first lighting device among the plurality of lighting devices 300. An example is described. In the present invention, the second lighting device may be a part of the plurality of lighting devices 300 selected from all the lighting devices other than the first lighting device. In this case, for example, the third lighting device that is neither the first lighting device nor the second lighting device among the plurality of lighting devices 300 may be turned off in both the first period and the second period. Is preferred. Even in such a configuration, the second lighting device emits light with the first light emission intensity in the first period and the second period, so that the installation position of the first lighting device is appropriately specified.

  In the first embodiment, the example in which the position of the lighting device 300 is specified based on the first captured image and the second captured image has been described. In the present invention, the position of the illumination device 300 may be specified based on the second captured image. In this case, in the second embodiment, 20 candidate areas are identified from the second captured image by a technique similar to the technique of identifying 20 candidate areas from the third captured image. And a candidate area | region with the highest average luminance value is identified as an area | region which shows the illuminating device 300 to which the selected MAC address was given among 20 candidate areas | regions. And the area | region which shows each of the 20 illuminating devices 300 is specified based on 20 2nd captured images.

  It is also possible to cause the personal computer or the like to function as the set position specifying device 100 according to the present invention by applying an operation program that defines the operation of the set position specifying device 100 according to the present invention to an existing personal computer or information terminal device. Is possible.

  Further, such a program distribution method is arbitrary. For example, the program is stored and distributed in a computer-readable recording medium such as a CD-ROM (Compact Disk Read-Only Memory), a DVD (Digital Versatile Disk), or a memory card. Alternatively, it may be distributed via a communication network such as the Internet.

  Various embodiments and modifications can be made to the present invention without departing from the broad spirit and scope of the present invention. Further, the above-described embodiment is for explaining the present invention, and does not limit the scope of the present invention. That is, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

  The present invention is applicable to an installation position specifying system that specifies an installation position of a lighting device identified by identification information.

11 CPU, 12 ROM, 13 RAM, 14 Flash memory, 15 RTC, 16 Touch screen, 17 Network interface, 18 Serial communication interface, 100 Installation position identification device, 101 Storage unit, 102 Control unit, 103 Acquisition unit, 104 Identification unit , 105 presentation unit, 106 collection unit, 200 imaging device, 300 illumination device, 311, 312, 313, 314, 315, 321, 322, 323, 324, 325, 331, 332, 333, 334, 335, 341, 342 , 343, 344, 345 region, 400 network, 500, 510, 520, 530, 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 612, 613, 614, 615, 61 , 617, 618, 619, 620, 701, 702, 703, 704, 705, 706, 707, 708, 709, 710, 711, 712, 713, 714, 715, 716, 717, 718, 719, 720 images, 1000 Installation position identification system

The present invention is Installation position presentation device, installation position presentation method, and a program.

An object of the present invention is to provide an installation position presentation device, an installation position presentation method, and a program for quickly presenting an installation position of a lighting device identified by identification information.

In order to achieve the above object, an installation position presentation device according to the present invention includes:
A storage unit that stores a plurality of pieces of identification information for identifying a plurality of lighting devices installed in the space on a network;
In the first period, among the plurality of lighting devices, the first lighting device and the second lighting device are lit at a first emission intensity, and in the second period that is continuous with the first period, The plurality of lighting devices may be turned on so that the first lighting device is turned on at a second light emission intensity different from the first light emission intensity, and the second lighting device is turned on at the first light emission intensity. A control unit for controlling via the network using a plurality of identification information;
Luminance between a first captured image generated by capturing the space in the first period and a second captured image generated by capturing the space in the second period A presentation unit that presents an image region having a maximum value difference as an installation position in the space of the first lighting device on the first captured image or the second captured image .

In the present invention, a first captured image generated during a first period in which the first lighting device and the second lighting device among the plurality of lighting devices are lit at the first emission intensity, and the first lighting. The device is turned on at a second emission intensity different from the first emission intensity, the second lighting device is turned on at the first emission intensity, and is generated in a second period that is continuous with the first period. The image area having the largest difference in luminance value between the two captured images is presented as the installation position in the space of the first lighting device on the first captured image or the second captured image. . Therefore, according to this invention, the installation position of the illuminating device identified by identification information can be rapidly shown .

Claims (6)

A storage unit that stores a plurality of pieces of identification information for identifying a plurality of lighting devices installed in the space on a network;
In the first period, among the plurality of lighting devices, the first lighting device and the second lighting device are lit at a first emission intensity, and in the second period that is continuous with the first period, The plurality of lighting devices may be turned on so that the first lighting device is turned on at a second light emission intensity different from the first light emission intensity, and the second lighting device is turned on at the first light emission intensity. A control unit for controlling via the network using a plurality of identification information;
Acquisition of acquiring a first captured image generated by capturing the space in the first period and a second captured image generated by capturing the space in the second period And
A specifying unit that specifies an installation position of the first lighting device in the space based on the first captured image and the second captured image;
Installation position identification device. The specifying unit specifies, as the installation position, a position in the space corresponding to an image region having a maximum difference in luminance value between the first captured image and the second captured image;
The installation position specifying device according to claim 1. The control unit controls the plurality of illumination devices via the network using the plurality of identification information so that the plurality of illumination devices are turned on at a third emission intensity in a third period.
The acquisition unit acquires a third captured image generated by imaging the space in the third period,
The specifying unit specifies a plurality of candidate regions representing the plurality of lighting devices in the third captured image, and the first captured image and the second captured image among the specified candidate regions Specifying the position in the space corresponding to the candidate area having the largest difference in average luminance value as the installation position,
The installation position specifying device according to claim 1. The third emission intensity is a maximum emission intensity of the plurality of lighting devices.
The installation position specifying device according to claim 3. A collection step in which the collection unit collects a plurality of pieces of identification information for identifying a plurality of lighting devices installed in the space on the network;
In the first period, the control unit turns on the first illumination apparatus and the second illumination apparatus among the plurality of illumination apparatuses at the first emission intensity, and continues to the second period. In the period, the first lighting device is turned on at a second light emission intensity different from the first light emission intensity, and the second lighting device is turned on at the first light emission intensity. A control step of controlling a lighting device via the network using the plurality of identification information;
A first captured image generated by capturing the space in the first period; a second captured image generated by capturing the space in the second period; An acquisition step to acquire,
A specifying unit that specifies an installation position of the first illumination device in the space based on the first captured image and the second captured image; and
Installation location identification method. A computer comprising a storage unit for storing a plurality of identification information for identifying a plurality of lighting devices installed in a space on a network,
In the first period, among the plurality of lighting devices, the first lighting device and the second lighting device are lit at a first emission intensity, and in the second period that is continuous with the first period, The plurality of lighting devices may be turned on so that the first lighting device is turned on at a second light emission intensity different from the first light emission intensity, and the second lighting device is turned on at the first light emission intensity. A control unit for controlling via the network using a plurality of identification information;
Acquisition of acquiring a first captured image generated by capturing the space in the first period and a second captured image generated by capturing the space in the second period Part,
Based on the first captured image and the second captured image, function as an identifying unit that identifies an installation position of the first lighting device in the space;
program.

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