WO2015174167A1

WO2015174167A1 - Luminescent color control device, method and program, lighting system and lighting device and method

Info

Publication number: WO2015174167A1
Application number: PCT/JP2015/060771
Authority: WO
Inventors: 俊介野村
Original assignee: コニカミノルタ株式会社
Priority date: 2014-05-13
Filing date: 2015-04-06
Publication date: 2015-11-19
Also published as: JPWO2015174167A1; JP6512220B2

Abstract

This luminescent color control device, method and program, lighting system and lighting device and method make it possible to conceptually represent an image by means of gradation lighting. A lighting device (LD) emits multiple lights such that a portion of these overlaps in a radial angle region, and this luminescent color control device controls the colors of each of multiple lights in the lighting device (LD), and is provided with an image acquisition unit (62) which acquires image data representing an image, a region selection unit (63) which selects multiple regions from the image represented in the image data, a color determination unit (64) which determines the colors of each of the lights on the basis of color information in each of the multiple regions, and a signal generating unit (65) which generates, for output to the lighting device (LD), a signal representing the colors determined by the color determination unit (64).

Description

Luminescent color control device, method and program, illumination system, illumination device and method

The present invention relates to an emission color control device, an emission color control method, an emission color control program, an illumination system, an illumination device, and an illumination method that are preferably used for so-called gradation illumination.

In recent years, gradation lighting that illuminates the radiation angle region by continuously changing the brightness and color has attracted attention. This gradation illumination can be realized by, for example, the illumination device disclosed in Patent Document 1.

The illuminating device disclosed in Patent Document 1 is an illuminating device including a light source composed of a light emitting diode or the like, and a plurality of light emitted from the light source is reproduced in order to reproduce a natural light environment within a viewing angle range. An irradiation area is formed, and variable means for changing the size of at least one of the plurality of irradiation areas is provided. The plurality of irradiation areas include an intermediate area that partially overlaps the intermediate area. The light of each said irradiation area | region which forms an intermediate | middle area | region mixes, and has a mixed color.

By the way, an image is generally displayed by a display device having a large number of pixels, such as a CRT (Cathode ray tube) display, a liquid crystal display, and a projector. Of course, it cannot be displayed.

JP 2010-157418 A

The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an emission color control device, an emission color control method, an emission color control program, an illumination system, and an illumination that can express an image conceptually by gradation illumination. An apparatus and illumination method is provided.

In the emission color control device, emission color control method and emission color control program, illumination system, illumination device and illumination method according to the present invention, the illumination device emits a plurality of lights so that some of them overlap each other in the emission angle region Each color of the plurality of lights in is controlled. At this time, image data representing the image is acquired, a plurality of regions are selected from the images represented by the image data, and the colors of the plurality of lights are determined based on the color information in the plurality of regions. A signal representing the determined color is generated and output to the lighting device. Therefore, the light emission color control device, the light emission color control method, the light emission color control program, the illumination system, the illumination device, and the illumination method according to the present invention can conceptually express an image by gradation illumination.

The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

It is a block diagram which shows the electric constitution of the illumination system in embodiment. It is a block diagram which shows the structure of the SP side control process part in the illumination system of embodiment. It is a figure which shows the external appearance of the smart phone in the illumination system of embodiment. It is a circuit diagram which shows the electric constitution of the light source part in the illumination system of embodiment. It is a perspective view which shows the external appearance of the illuminating device in the illumination system of embodiment. It is sectional drawing which shows the structural structure of the light source part in the illumination system of embodiment. It is a top view which shows the structure of the LED light source in the illumination system of embodiment. It is a three-dimensional diagram of hue, brightness, and saturation. It is a figure for demonstrating schematic operation | movement of the luminescent color control in the illumination system of embodiment. It is a figure which shows an example of the gradation illumination by the illumination system of embodiment. It is a flowchart which shows operation | movement of the smart phone in the illumination system of embodiment. It is a flowchart which shows operation | movement of the illuminating device in the illumination system of embodiment. It is a flowchart which shows the operation | movement of the image quantization in the illumination system of embodiment. It is a figure for demonstrating the operation | movement of the area | region selection and color determination of the 1st aspect in the illumination system of embodiment. It is a figure for demonstrating the operation | movement of the area | region selection and color determination of the 2nd aspect in the illumination system of embodiment. It is a figure for demonstrating the operation | movement of the area | region selection and color determination of the 3rd aspect in the illumination system of embodiment. It is a figure for demonstrating the operation | movement of the area | region selection and color determination of the 4th aspect in the illumination system of embodiment. It is a figure for demonstrating the operation | movement of the area | region selection and color determination of the 5th aspect in the illumination system of embodiment. It is a figure for demonstrating the operation | movement of the area | region selection and color determination of the 6th aspect in the illumination system of embodiment. It is a figure for demonstrating the operation | movement of the color determination by the designated color in the illumination system of embodiment. It is a figure for demonstrating the operation | movement of the color determination by the color correction in the illumination system of embodiment.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. In addition, the structure which attached | subjected the same code | symbol in each figure shows that it is the same structure, The description is abbreviate | omitted suitably. Further, in this specification, when referring generically, it is indicated by a reference symbol without a suffix, and when referring to an individual configuration, it is indicated by a reference symbol with a suffix.

FIG. 1 is a block diagram illustrating an electrical configuration of a lighting system according to an embodiment. FIG. 2 is a block diagram illustrating a configuration of the SP-side control processing unit in the illumination system of the embodiment. Drawing 3 is a figure showing the appearance of the smart phone in the lighting system of an embodiment. FIG. 4 is a circuit diagram illustrating an electrical configuration of the light source unit in the illumination system of the embodiment. FIG. 5 is a perspective view illustrating an appearance of the lighting device in the lighting system according to the embodiment. FIG. 6 is a cross-sectional view illustrating a structural configuration of a light source unit in the illumination system of the embodiment. FIG. 7 is a plan view showing a configuration of an LED light source in the illumination system of the embodiment. FIG. 8 is a three-dimensional diagram of hue, lightness, and saturation.

As shown in FIG. 1, the illumination system LS in the embodiment includes an illumination device LD and a smartphone SP as an example of a light emission color control device. The illumination device LD emits first and second lights of different colors such that a part of the first light and a part of the second light overlap each other in a radiation angle region. Note that the number of lights is not limited to two, but may be a plurality of light such as three or four. Such an illuminating device LD emits so-called gradation illumination because a part of the first light and a part of the second light are emitted so as to overlap each other in a radiation angle region. The light emission color control device is a device that controls the first color of the first light and the second color of the second light in the illumination device LD. The emission color control device may be configured by a dedicated device, but in the present embodiment, when the emission color control program is installed in the smartphone by installing the emission color control program in a so-called smartphone that is a high-performance mobile phone. Will be described.

First, a smartphone SP as an example of a light emission color control device will be described. As shown in FIGS. 1 to 3, for example, the smartphone SP includes a display unit OT, a smartphone side input unit (hereinafter abbreviated as “SP side input unit”) IN, and a smartphone side control processing unit (hereinafter referred to as “SP side input unit”). , Abbreviated as “SP side control processing unit”.) PC, smartphone side storage unit (hereinafter abbreviated as “SP side storage unit”) MY, telephone processing unit TL, and smartphone side Bluetooth communication module (hereinafter referred to as “SP side control processing unit”). , Abbreviated as “SP-side Bluetooth communication module.”) BM and a thin plate-like casing HS that accommodates these parts OT, IN, PC, MY, TL, and BM.

The SP-side input unit IN is a device that is connected to the SP-side control processing unit PC, receives an input of a predetermined instruction from the user, and inputs the instruction to the smartphone SP, for example, a switch. The display unit OT is a device that is connected to the SP-side control processing unit PC and displays predetermined information, such as a liquid crystal display device or an organic EL display device. As shown in FIG. 3, a rectangular display surface of the display unit OT faces one main surface (front surface) of the housing HS, and an input operation unit IN is arranged on one end side (lower side) of the display surface. It is installed.

In the present embodiment, the display surface of the display unit OT is provided with a touch panel that receives an input by touching the display surface with a fingertip or a pen as another input device. The input of the instruction that cannot be performed is realized by combining the information displayed on the touch panel and the display unit OT. For example, a plurality of images stored in the SP-side storage unit MY are displayed as so-called thumbnails on the display unit OT, and a display surface at a position where one of the displayed images is displayed is touched. Thus, the image displayed at the position is input to the smartphone SP as an image to be conceptually expressed by the illumination device LD. The touch panel may be of a known type such as a so-called capacitance type.

The telephone processing unit TL is a device that is connected to the SP-side control processing unit PC and implements a telephone function by performing communication using a so-called mobile phone network.

The SP-side Bluetooth communication module BM is an apparatus that is connected to the SP-side control processing unit PC and communicates with an external device (for example, the lighting device LD in the present embodiment) using a communication signal that conforms to the Bluetooth (registered trademark) communication standard. is there.

SP side control processing part PC controls operation | movement of the smart phone SP whole by controlling each part of smart phone SP according to the function of the said each part, respectively. The SP-side control processing unit PC sets the first color of the first light and the second color of the second light in the lighting device LD as described later. The SP-side control processing unit PC includes, for example, a CPU (Central Processing Unit) and its peripheral circuits.

The SP-side storage unit MY is connected to the SP-side control processing unit PC, and stores a variety of programs executed by the CPU as the SP-side control processing unit PC and data necessary for the execution (Read Only Memory). ) And EEPROM (Electrically Erasable Programmable Read Only Memory), a volatile memory element such as a RAM (Random Access Memory) serving as a so-called working memory of the CPU, and its peripheral circuits. The SP-side storage unit MY may store an image that is conceptually expressed by the illumination device LD.

Then, the SP-side control processing unit PC executes the emission color control program stored in the SP-side storage unit MY to functionally control the unit 61, the image acquisition unit 62, as shown in FIG. An area selection unit 63, a color determination unit 64, and a signal generation unit 65 are configured.

The control unit 61 controls each unit of the smartphone SP according to the function of each unit.

The image acquisition unit 62 acquires image data representing an image. The image acquisition unit 62 acquires image data, for example, by reading image data stored in advance in the SP-side storage unit MY. Further, for example, image data is acquired by photographing an object (subject) with an unillustrated imaging device (camera) mounted on the smartphone SP. Note that image data generated by the imaging device (not shown) may be stored in the SP-side storage unit MY. For example, the image acquisition unit 62 receives data from an external device (for example, another smartphone or an imaging device (camera)) by using the data communication function of the telephone processing unit TL or the communication function of the SP-side Bluetooth communication module BM. The image data is acquired.

The region selection unit 63 selects a plurality of regions from the image represented by the image data acquired by the image acquisition unit. More specifically, the region selection unit 63 includes, for example, an image sampling unit 631, an image quantization unit 632, and a selection unit 633 functionally.

The image sampling unit 631 samples the image by dividing the image represented by the image data acquired by the image acquisition unit 62 into a plurality of block regions in a predetermined shape. The predetermined shape in the block area may be an arbitrary shape such as a circular shape and a polygonal shape, but the image can be divided without a gap. For example, in the present embodiment, the predetermined shape is the same shape and the same size. It has a rectangular shape.

The image quantization unit 632 obtains a representative color representing the color of the block region based on the color information in the block region in each of the plurality of block regions sampled by the image sampling unit 631. Each color of each of the plurality of block areas is quantized. For example, the image quantization unit 632 uses a predetermined statistical value of color information in the block area as the representative color. The predetermined statistical value is preferably any one of an average value, a weighted average value, a median value, and a median value. Since the color is represented by, for example, hue, lightness, and saturation, in the calculation of the representative value, the predetermined statistical value is obtained for each of the hue, lightness, and saturation, and the representative color is obtained. FIG. 8 shows a three-dimensional diagram of the hue, brightness, and saturation of the color. According to this, since the representative color is determined by the statistical value, the representative color of the block area can be determined more appropriately.

The selection unit 633 sets a plurality of block regions as the plurality of regions based on the representative colors quantized by the image quantization unit 632 from the plurality of block regions sampled by the image sampling unit 631. To choose.

Such a region selection unit 63 may take various modes, and may preferably be the following first to sixth modes.

In the area selection unit 63 of the first aspect, the selection unit 633 includes the hue, brightness, and saturation of the representative color with respect to an adjacent block area among the plurality of block areas sampled by the image sampling unit 631. A block area in which any one of is different by a predetermined first threshold or more is selected as the plurality of block areas.

In the region selection unit 63 of the second mode, the selection unit 633 has a predetermined range of hue difference, saturation difference, and brightness difference in the representative color from among a plurality of block regions sampled by the image sampling unit 631. The block areas are selected and grouped into one group, and a plurality of groups are selected as the plurality of block areas from the group in which the total area of the block areas belonging to the group is equal to or greater than a predetermined second threshold. select.

In the region selection unit 63 of the third aspect, the selection unit 633 has a predetermined range in which the hue difference, the saturation difference, and the brightness difference in the representative color are selected from a plurality of block regions sampled by the image sampling unit 631. A group of block areas that are within the group and selected and grouped into one group, and the total area of the block areas belonging to the group is equal to or greater than a predetermined second threshold and the saturation or lightness is equal to or greater than a predetermined third threshold A plurality of groups are selected as the plurality of block areas.

In the region selection unit 63 of the fourth aspect, the selection unit 633 includes the hue, brightness, and saturation of the representative color for the adjacent block region from among the plurality of block regions sampled by the image sampling unit 631. At least one block area that is different from the first threshold by at least one is selected as at least one of the plurality of block areas, and is selected from the plurality of block areas sampled by the image sampling unit , Selecting block areas in which hue difference, saturation difference, and brightness difference in the representative colors are within a predetermined range and grouping them into one group, and the total area of the block areas belonging to the grouped group is a predetermined second threshold value At least one group is selected from the above groups as at least one of the plurality of block regions.

In the region selection unit 63 of the fifth aspect, the selection unit 633 selects the plurality of block regions from among the partial regions in the image represented by the image data acquired by the image acquisition unit 62. In this case, any one of the first to fourth aspects described above can be further employed.

In the region selection unit 63 of the sixth aspect, the selection unit 633 selects a plurality of regions from the gradation regions that are gradations in the image represented by the image data acquired by the image acquisition unit 62. In this case, any one of the first to fourth aspects described above can be further employed.

The color determination unit 64 determines first and second colors of first and second lights (to be described later) in the illumination device LD based on each color information in the plurality of regions selected by the region selection unit 63. More specifically, the color determination unit 64 determines the first and second colors of the first and second lights based on the representative colors in the plurality of block regions selected by the selection unit 633 of the region selection unit 63. To decide.

The signal generation unit 65 generates signals representing the first and second colors determined by the color determination unit 64 and outputs the signals to the outside using a predetermined communication interface for output to the illumination device LD. . The predetermined communication interface is a device that transmits and receives signals in conformity with a predetermined communication standard. As an example, in the present embodiment, the predetermined communication interface is an SP-side Bluetooth communication module MB.

Next, the lighting device LD will be described. For example, as illustrated in FIGS. 1 and 4 to 7, the illumination device LD is abbreviated as a light source unit 1, an illumination control unit 2, and an illumination device side input unit (hereinafter, “LD side input unit”). ) 3 and a power supply unit 4.

The power supply unit 4 is connected to the external power supply 5, the light source unit 1, the illumination control unit 2, and the LD side input unit 3, and receives power supply from the external power supply 5 such as a commercial power supply. This is a circuit that generates predetermined power for operating the control unit 2 and the LD side input unit 3. For example, the power supply unit 4 includes a rectifier circuit that rectifies commercial AC power fed from the external power supply 5 into DC power, and a smoothing circuit that smoothes the output of the rectifier circuit. A voltage conversion circuit (converter) that converts the voltage values according to the operating voltages of the illumination control unit 2 and the LD side input unit 3 is provided. The DC power generated by the power supply unit 4 is supplied to the light source unit 1, the illumination control unit 2, and the LD side input unit 3.

The LD side input unit 3 is connected to the illumination control unit 2 and is a circuit for inputting a predetermined instruction or the like to the illumination control unit 2 of the illumination device LD. The LD-side input unit 3 includes, for example, a plurality of switch elements, and each switch element includes a power switch element for turning on / off the lighting device LD, and hue, brightness, and chroma when performing gradation illumination. One or more adjustment switch elements or the like for adjusting each degree are included.

The light source unit 1 includes first and second LED light sources 10-1 and 10-2 that can emit light of a plurality of colors. A part of the first light emitted from the first LED light source 10-1 and the second LED The first light and the second light are emitted so that a part of the second light emitted from the light source 10-2 overlaps with each other in the radiation angle region. In such a light source unit 1, a part of the first light and a part of the second light are overlapped with each other in the radiation angle region, so that an intermediate color between the hue A and the hue B is obtained from the region of the hue A by the first light. It is possible to illuminate a surface to be illuminated such as a wall surface or a ceiling surface with gradation illumination that illuminates by changing the brightness and color continuously through the intermediate region and reaching the region of hue B by the second light.

Since each of the first and second LED light sources 10-1 and 10-2 has the same configuration, the subscripts are omitted and are described collectively. The LED light source 10 includes a day white LED 11 that emits day white light, a light bulb color LED 12 that emits light bulb color light, and an RGB LED 13. The LED light source 10 may be configured to include each of the daylight white LEDs 11, the light bulb color LEDs 12, and the RGB LEDs 13 one by one. However, in this embodiment, a plurality of daylight white LEDs 11 are used to perform gradation illumination over a wider radiation angle region. A plurality of light bulb color LEDs 12 and a plurality of RGB LEDs 13 are provided. As shown in FIG. 7, the plurality of daylight white LEDs 11, the plurality of light bulb color LEDs 12, and the plurality of RGB LEDs 13 are arranged along the one direction on a plate-like LED substrate 14 having a wiring pattern and extending in one direction. It is installed side by side. The plurality of daylight white LEDs 11, the plurality of light bulb color LEDs 12 and the plurality of RGB LEDs 13 are arranged in parallel on the LED substrate 14, for example, with the daylight white LED 11, RGBLED 13, light bulb color LED 12 and RGBLED 13 as one set.

The lunch white LED 11 includes, for example, a B light LED element and a yellow phosphor that emits a complementary yellow color when excited by a part of the B light emitted from the B light LED. By adjusting to about 5000K, daylight white light is emitted. Further, for example, the daylight white LED 11 includes a violet LED element that emits near-ultraviolet light or violet light, a red phosphor that emits red, green, and blue when excited by part of the light emitted from the violet light LED, and green fluorescence. Body and blue phosphors, and adjusting them to adjust the color temperature to about 5000 K, thereby emitting daylight white light. The daylight white LED 11 is supplied with DC power from the power supply unit 4, and the amount of daylight white light is adjusted by controlling a current value by a first current control circuit 23-1 to be described later of the illumination control unit 2. Instead of the daylight color, LEDs having a higher color temperature instead of 5000K may be used.

Similarly to the daylight white LED 11, the light bulb color LED 12 includes, for example, a B light LED element and a yellow phosphor, and adjusts the color temperature to about 3000K to radiate light bulb color light. . Further, for example, the light bulb color LED 12 includes a purple LED element and red phosphor, green phosphor, and blue phosphor, and adjusts the color temperature to about 3000K by adjusting them to produce light bulb color light. It radiates. Direct current power is supplied to the light bulb color LED 12 from the power supply unit 4, and the light amount of the light bulb color light is adjusted by controlling a current value by a second current control circuit 23-2 described later of the illumination control unit 2. Instead of the light bulb color, an LED with a lower color temperature may be used instead of 3000K.

The RGBLED 13 includes, for example, an R light LED element, a G light LED element, and a B light LED element, and adjusts these to emit each color light. That is, the RGBLED 13 is an LED light source that can emit light of a plurality of colors. Direct current power is individually supplied from the power supply unit 4 to the R light LED element, the G light LED element, and the B light LED element of the RGBLED 13, and each current is supplied by a third current control circuit 23-3 described later of the illumination control unit 2. The amount of light of each color is adjusted by individual control of the value.

More specifically, one structural example of such a light source unit 1 will be described. As shown in FIG. 6, the light source unit 1 includes a main body 17 made of, for example, aluminum having a substantially prismatic shape elongated in one direction. The main body 17 is formed with a recess 171 which is formed from one ridge line toward the inside and is elongated along the one direction. The recess 171 branches into two in the middle from the one ridge line toward the inside, and includes two first and second recesses 171-1 and 171-2. Both side surfaces of the first recess 171-1 are curved shapes that swell outward from the center of the first recess 171-1, and have a slight light scattering property within a range that does not hinder the desired gradation illumination. The first LED substrate 14-1 may be disposed on the first bottom surface of the first LED substrate 14-1 via, for example, an aluminum heat sink 15-1. On the first LED substrate 14-1, the plurality of daylight white LEDs 11-1, the plurality of light bulb color LEDs 12-1, and the plurality of RGB LEDs 13-1 are arranged in parallel along the one direction. That is, the first LED light source 10-1 is disposed on the first bottom surface of the first recess 171-1. Similarly, both side surfaces of the second recess 171-2 are curved shapes that swell outward from the center of the second recess 171-2, and slightly light within a range that does not hinder desired gradation illumination. The second LED substrate 14-2 may be disposed on the second bottom surface of the second LED substrate 14-2 via, for example, an aluminum heat sink 15-2. On the second LED board 14-2, the plurality of daylight white LEDs 11-2, the plurality of light bulb color LEDs 12-2, and the plurality of RGB LEDs 13-2 are arranged in parallel along the one direction. That is, the second LED light source 10-2 is disposed on the second bottom surface of the second recess 171-2. The first LED light source 10-1 and the second LED light source 10-2 are arranged so that the first optical axis AX1 of the first LED light source 10-1 and the second optical axis AX2 of the second LED light source 10-2 intersect each other. The first and second recesses 171-1 and 171-2 are disposed respectively. For example, the first bottom surface of the first recess 171-1 and the second bottom surface of the second recess 171-2 are formed so as to intersect each other at their extended surfaces. The first optical axis AX1 of the first LED light source 10-1 is a radiation surface of each of the plurality of daylight white LEDs 11-1, the plurality of bulb-color LEDs 12-1 and the plurality of RGB LEDs 13-1 arranged in parallel along the one direction ( The first normal direction of the first plane formed by the light emitting surface. The second optical axis AX1 of the second LED light source 10-2 is a radiation surface of each of the plurality of daylight white LEDs 11-2, the plurality of light bulb color LEDs 12-2, and the plurality of RGB LEDs 13-2 arranged in parallel along the one direction ( This is the second normal direction of the second plane formed by the light emitting surface. In this way, the first optical axis AX1 and the second optical axis AX2 intersect each other, so that the light flux from the first LED light source 10-1 and the second LED light source 10 are located at the position of the cover member 16 that is the light emission window of the illumination device. The area of the light emission window that can overlap the light flux from -2 can be reduced. That is, the entire lighting device can be configured compactly. In a radiation angle region that is separated from the light source unit 1 by a predetermined distance, a part of the first light and a part of the second light overlap each other, and gradation illumination is realized on the irradiated surface. Each point on the irradiated surface may be equidistant from the light source unit 1, and does not necessarily have to be equidistant from the light source unit 1, and the distance from the light source unit 1 may change. A pair of grooves are formed along the one direction in the vicinity of the opening of the recess 171 in the main body 17, and each of the pair of grooves has a long, curved plate shape along the one direction. Both ends of the cover member 16 are fitted, and the opening of the recess 171 is closed by the cover member 16. The cover member 16 is made of a material having translucency with respect to the first light emitted from the first LED light source 10-1 and the second light emitted from the second LED light source 10-2. Note that the cover member 16 may have a slight light scattering property within a range not hindering desired gradation illumination. Moreover, you may have fixed directivity.

Although the light source unit 1 may be configured to include only the RGBLED 13, the light source unit 1 may be configured to include only the RGBLED 13 by further including the daylight white LED 11 and the light bulb color LED 12 as in the present embodiment. Color rendering can be improved. Further, when the gradation illumination desired to be radiated by the lighting device LD includes a lot of day white components of the day white LED 11 or a lot of bulb color components of the bulb color LED 12, the lighting device LD of the present embodiment Color and brightness can be obtained more efficiently.

The illumination control unit 2 controls the first and second LED light sources 10-1 and 10-2 so as to emit the first and second lights in mutually different colors. The illumination control unit 2 is abbreviated as, for example, a lighting device side control processing unit (hereinafter abbreviated as “LD side control processing unit”) 21 and a lighting device side storage unit (hereinafter referred to as “LD side storage unit”). ) 22, a current control unit 23, and a lighting device side Bluetooth communication module (hereinafter abbreviated as “LD side Bluetooth communication module”) 24.

The LD-side Bluetooth communication module 24 is an apparatus that is connected to the LD-side control processing unit 21 and communicates with an external device using a communication signal that conforms to the Bluetooth (registered trademark) communication standard.

The current control unit 23 is a day white LED 11-1, 11-2, light bulb color LED 12-1, 12-2 and RGB LED 13 in the first and second LED light sources 10-1, 10-2 according to the control of the LD side control processing unit 21. -1 and 13-2 are circuits for controlling the respective currents flowing therethrough. For example, the current control unit 23 controls the first current control circuit 23-1 that controls the currents flowing in the daylight white LEDs 11-1 and 11-2 and the currents that flow in the light bulb color LEDs 12-1 and 12-2, respectively. A second current control circuit 23-2 for controlling, and a third current control circuit 23-3 for controlling each current flowing in each of the RGB LEDs 13-1, 13-2 are provided. Each of the first to third current control circuits 23-1 to 23-3 includes, for example, a variable current source controlled by the LD-side control processing unit 21. The current control unit 23 may vary the current by PWM (Pulse Width Modulation) control.

The LD-side storage unit 22 is a circuit that is connected to the LD-side control processing unit 21 and stores various predetermined programs and various predetermined data executed by the CPU as the LD-side control processing unit 21. Examples of the various predetermined programs include an illumination control program for performing gradation illumination based on a signal received from the smartphone SP via the SP-side Bluetooth communication module BM and the LD-side Bluetooth communication module 24. The various predetermined data includes data necessary for executing the predetermined program, such as a signal received from the smartphone SP via the SP-side Bluetooth communication module BM and the LD-side Bluetooth communication module 24. Such an LD-side storage unit 22 includes, for example, a ROM, an EEPROM, or the like. The LD-side storage unit 22 includes a RAM serving as a so-called working memory for the CPU that stores data generated during execution of the predetermined program.

The LD-side control processing unit 21 controls the operation of the entire illumination device LD by controlling each unit of the illumination device LD according to the function of each unit. The LD-side control processing unit 21 controls the first color of the first light and the second color of the second light in the lighting device LD according to the signal received from the smartphone SP in order to perform gradation illumination. . The LD side control processing unit 21 includes, for example, a CPU and its peripheral circuits.

Next, the operation of this embodiment will be described. FIG. 9 is a diagram for explaining a schematic operation of emission color control in the illumination system of the embodiment. FIG. 10 is a diagram illustrating an example of gradation illumination by the illumination system of the embodiment. FIG. 10A is an example of an image represented by image data, and FIG. 10B is an example of gradation illumination formed by the illumination device LD of the embodiment based on the image shown in FIG. 10A. FIG. 10C is another example of an image represented by image data, and FIG. 10D is an example of gradation illumination formed by the illumination device LD of the embodiment based on the image shown in FIG. 10C. FIG. 11 is a flowchart illustrating the operation of the smartphone in the lighting system of the embodiment. FIG. 12 is a flowchart illustrating the operation of the lighting device in the lighting system according to the embodiment. FIG. 13 is a flowchart illustrating an image quantization operation in the illumination system of the embodiment. FIG. 14 is a diagram for explaining the region selection and color determination operations of the first aspect in the illumination system of the embodiment. FIG. 14A is a diagram for explaining the operation of image sampling, FIG. 14B is a diagram for explaining the operation of image quantization, and FIG. 14C is a diagram for explaining the operation of region selection. FIG. 14D is a diagram for explaining the color determination operation. FIG. 15 is a diagram for explaining the region selection and color determination operations of the second aspect in the illumination system of the embodiment. FIG. 16 is a diagram for explaining the region selection and color determination operations of the third aspect in the illumination system of the embodiment. FIG. 17 is a diagram for explaining the region selection and color determination operations of the fourth aspect in the illumination system of the embodiment. FIG. 18 is a diagram for explaining the region selection and color determination operations of the fifth aspect in the illumination system of the embodiment. FIG. 19 is a diagram for explaining the region selection and color determination operations of the sixth aspect in the illumination system of the embodiment.

In the smartphone SP that is an example of the light emission color control device in the illumination system LS of the present embodiment, the image acquisition unit 62 of the SP-side control processing unit PC first converts image data representing an image into the imaging device or SP side that is not illustrated. Obtained from the storage unit MY or the like. Next, the region selection unit 63 of the SP-side control processing unit PC, as shown in FIG. 9, has at least two or more regions from the image represented by the image data acquired by the image acquisition unit 62. Select ARm. In the example shown in FIG. 9, two areas AR1 and AR2 are selected. Next, the color determination unit 64 of the SP-side control processing unit PC determines the first and second colors of the first and second lights based on the color information in the plurality of regions ARm selected by the region selection unit 63. To do. The first and second colors may be the colors themselves in the plurality of areas ARm selected by the area selection unit 63, for example, and based on the colors in the plurality of areas ARm selected by the area selection unit 63, for example. It can be a determined color. Then, the signal generation unit 65 generates signals representing the first and second colors determined by the color determination unit 64 and outputs them to the outside using the SP-side Bluetooth communication module BM for output to the illumination device LD. To do.

When this signal is received by the LD side Bluetooth communication module 24, the LD side control processing unit 21 controls the current so that the lighting device LD emits light in the first and second colors stored in the received signal. The first and second LED light sources 10-1 and 10-2 are driven and controlled using the unit 23. By this drive control, the first and second LED light sources 10-1 and 10-2 emit light in the first and second colors and perform gradation illumination on a predetermined illuminated surface.

Therefore, the illumination system LS, the light emission color control device (smartphone SP in the above example), the light emission color control method and the light emission color control program implemented therein select a plurality of areas ARn from the image. The first color of the first light and the second color of the second light are determined based on each color information. For this reason, the illumination system LS, the emission color control device, the emission color control method and the emission color control program mounted thereon can be deformed by simplifying the image that is the basis of the gradation illumination. Therefore, the illumination system LS, the light emission color control device, the light emission color control method and the light emission color control program mounted thereon can conceptually express the impression of the image by the illumination device LD for gradation illumination.

For example, the illumination apparatus LD operates as described above with respect to the image of the morning coast where the morning sun rises from the horizon shown in FIG. By radiating yellow light from the first LED light source 10-1 with yellow as the first color and light blue light from the second LED light source 10-2 with light as the second color, one end of the irradiated surface is It is illuminated with yellow light and the other end is illuminated with light blue light, and the illuminated surface is illuminated with gradation. Further, for example, when the lighting system LS of the present embodiment operates as described above with respect to an image showing a sunset scene as shown in FIG. 10C, the lighting device LD can perform the first operation as shown in FIG. 10D. By radiating red light from the first LED light source 10-1 with red as one color and radiating yellow light from the second LED light source 10-2 with yellow as the second color, one end of the irradiated surface is red light. Illuminate and illuminate the other end with yellow light, and illuminate the illuminated surface with gradation. Thus, the image shown in FIG. 10A is conceptually expressed by the gradation illumination shown in FIG. 10B, and the image shown in FIG. 10C is conceptually expressed by the gradation illumination shown in FIG. 10D.

More specifically, the smartphone SP and the illumination device LD as an example of the emission color control device in the illumination system LS of the present embodiment operate as follows.

In FIG. 11, in the smartphone SP, first, image data representing an image is acquired from the imaging device (not shown), the SP-side storage unit MY, and the like by the image acquisition unit 62 of the SP-side control processing unit PC. For example, image data is read from the SP-side storage unit MY (S11).

Next, the image sampling unit 631 in the region selection unit 63 of the SP-side control processing unit PC divides the image represented by the image data acquired by the image acquisition unit 62 into a plurality of block regions ARn in a predetermined shape. Thus, the image is sampled (S12). For example, as shown in FIG. 14A, an image is a rectangle having the same shape and the same size, and is divided into two vertical and horizontal directions orthogonal to each other, and is divided into a plurality of block areas ARn. The size (size) of the block area ARn is appropriately set according to the size (size) of the image. In the example shown in FIG. 14A, the size of the block area is set so that the image is divided into 90 block areas AR11 to AR910 arranged in a two-dimensional array.

Next, for each of the plurality of block areas ARn sampled by the image sampling section 631 by the image quantization section 632 in the area selection section 63 of the SP-side control processing section PC, the color information in the block area ARn is converted into color information in the block area ARn. Based on this, a representative color representative of the color of the block area ARn is obtained, so that each color of the plurality of block areas ARn is quantized into a representative color (S13). For example, each block area ARn of the image shown in FIG. 14A is represented by one representative color as shown in FIG. 14B by image quantization. FIG. 14B shows the middle of the image quantization process, and the colors of the block areas of 1 row 9 columns, 5 rows 3 columns, 5 rows 9 columns, 7 rows 4 columns and 7 rows 8 columns are image quantized and are representative. It is represented by one color.

In such image quantization, a predetermined statistical value of color information in the block area ARn is used as the representative color. The predetermined statistical value is preferably any one of an average value, a weighted average value, a median value, and a median value, and is a value appropriately selected from these.

For example, when the predetermined statistical value is an average value, an average value of the pixel values is obtained for all the pixels in the block area ARn, and the obtained average value is used as a representative value. More specifically, the average value of hue is obtained for all pixels in the block area ARn, the average value of lightness is obtained, the average value of saturation is obtained, and the obtained hue and lightness are obtained. The color defined by each average value of the saturation is the representative color of the block area ARn.

More specifically, as shown in FIG. 13, first, in the block area ARn, color information (R (red) value, G (green) value, B (blue) value of each color of each pixel) )) Is recognized (S31), and then each color dot is converted from the RGB color system to chromaticity / brightness data (S32). Next, average values of chromaticity / brightness data of all color dots are calculated (S33). Then, each data of the obtained average value of chromaticity and average value of brightness is returned to the RGB color system (S34), and the color of this RGB color system is set as the representative color of the block area ARn. (S35).

Further, for example, when the predetermined statistical value is a weighted average value, a weighted average value of the pixel values is obtained for all the pixels in the block area ARn, and the obtained weighted average value is used as a representative value. . More specifically, for all the pixels in the block area ARn, a weighted average value of hue is obtained, a weighted average value of lightness is obtained, a weighted average value of saturation is obtained, and these are obtained. A color defined by each weighted average value of hue, lightness, and saturation is a representative color of the block area ARn. The weight used in the weighted averaging may be appropriately set in advance for each value of hue, each value of brightness, and each value of saturation, and may be set according to an image of an actual block area. Good. For example, the hue frequency distribution is obtained for all the pixels in the block area ARn, and the weight of each value of the hue is set according to the frequency in the obtained hue frequency distribution. A brightness frequency distribution is obtained for the pixels, and the weight of each value of the brightness is set according to the frequency in the obtained brightness frequency distribution, and for all the pixels in the block area ARn, A frequency distribution of degrees is obtained, and the weight of each value of saturation is set according to the frequency in the obtained frequency distribution of saturation.

Further, for example, when the predetermined statistical value is a median value, the median value corresponds to the block region when the horizontal axis represents the pixel value divided for each predetermined range and the vertical axis represents the frequency for each division. This is the value of the most frequent segment of the frequency distribution for all pixels of ARn. More specifically, for example, the median value of the hue is the value of the most frequently classified section in the hue frequency distribution obtained by calculating the hue frequency distribution for all the pixels in the block area ARn. The value of the division is, for example, the middle value of the division or the average value of the division in the same manner as described below. The median value of lightness is a value of the most frequent section in the lightness frequency distribution obtained by calculating the lightness frequency distribution for all the pixels in the block area ARn. The median value of saturation is the value of the most frequent section in the saturation frequency distribution obtained by calculating the saturation frequency distribution for all the pixels in the block area ARn. The color defined by the median value of hue, the median value of lightness, and the median value of saturation is the representative color of the block area ARn.

Further, for example, when the predetermined statistical value is a central value, the central value corresponds to the block region when the horizontal axis represents the pixel value divided for each predetermined range and the vertical axis represents the frequency for each division. The middle of the frequency with the smallest frequency (minimum value of the frequency distribution) in the frequency distribution for all pixels of ARn and the value with the highest frequency (maximum value of the frequency distribution) Is the value of More specifically, for example, the hue center value is obtained by calculating the hue frequency distribution for all the pixels in the block area ARn, and the minimum value and the frequency distribution of the frequency distribution section in the obtained hue frequency distribution are obtained. It is the middle value with the maximum value of the category. The central value of the lightness is obtained by calculating the lightness frequency distribution for all the pixels in the block area ARn, and the center between the minimum value of the frequency distribution section and the maximum value of the frequency distribution section in the calculated lightness frequency distribution. Is the value of The saturation central value is obtained by calculating the saturation frequency distribution for all pixels in the block area ARn, and the minimum value of the frequency distribution section and the maximum value of the frequency distribution section in the calculated saturation frequency distribution. And the middle value. A color defined by the central value of the hue, the central value of the brightness, and the central value of the saturation is the representative color of the block area ARn.

Next, the representative quantized by the image quantization unit 632 out of the plurality of block regions ARn sampled by the image sampling unit 631 by the selection unit 633 in the region selection unit 63 of the SP-side control processing unit PC. Based on the color, at least two or more block areas ARm are selected as the plurality of areas (S14). For example, from the block areas ARn of the image shown in FIG. 14A, block areas of 1 row 9 columns and 5 rows 6 columns are selected based on the representative colors of the block areas ARn.

It should be noted that more specific aspects of the area selection process in step S14 will be described later.

Next, based on the color information in the plurality of areas ARm selected as described above by the area selecting section 63 by the color determining section 64 of the SP-side control processing section PC, the first and second lights 1 and A second color is determined (S15). The first and second colors may be, for example, the colors themselves (for example, the representative colors themselves) in the plurality of areas ARm selected by the area selection unit 63. For example, as shown in FIG. 14D, the area selection unit The color determined based on the colors in the plurality of areas ARm selected in 63 (for example, the color determined based on the representative color, etc. (for example, maintaining the hue and brightness of the representative color as they are and the color of the representative color) The color may be a color obtained by converting the degree into a saturation that is bright enough to be emitted by the lighting device LD).

Next, the color data is converted by the color determination unit 64 of the SP-side control processing unit PC into hue, lightness, and saturation with RGB using well-known conversion formulas (S16).

The signal generator 65 generates signals representing the first and second colors determined by the color determiner 64 and subjected to color data conversion for output to the illumination device LD, and this signal is used for SP side Bluetooth communication. It is transmitted to the outside by the module BM (S17). In the operation illustrated in FIG. 11, the first and second colors determined by the color determination unit 64 and subjected to color data conversion are stored and stored in the SP-side storage unit MY.

On the other hand, in the lighting device LD, when the signal is received from the SP-side Bluetooth communication module MB by the LD-side Bluetooth communication module 24 (S21) in FIG. 12, the first and second colors stored in the received signal are received. (That is, the first and second colors determined and converted by the color determination unit 64) are stored and stored in the LD side storage unit 22 by the LD side control processing unit 21 (S25). Then, the LD-side control processing unit 21 performs the first and second colors stored in the received signal (that is, the first and second colors determined by the color determination unit 64 and subjected to color data conversion). A control signal is generated so that the first and second LED light sources 10-1 and 10-2 emit light, and the control signal is output to the current control unit 23 (S22).

Next, the current control unit 23 responds to the control signal input from the LD-side control processing unit 21 by each of the first to third current control circuits, and the daylight white LEDs 11-1 and 11-2, the light bulb color LED 12- 1 and 12-2 and RGB LEDs 13-1 and 13-2 are respectively current controlled (S23), whereby the first and second LED light sources 10-1 and 10-2 emit light in the first and second colors ( S24). Accordingly, the illumination device LD performs gradation illumination on the surface to be illuminated.

Such an illumination system LS, a light emission color control device (smartphone SP in the above example), a light emission color control method and a light emission color control program mounted on the light system LS are converted into an image sample of an image that is the basis of gradation illumination. Since it is quantized, it can be deformed taking advantage of the characteristics of the image. Therefore, the illumination system LS, the emission color control device, the emission color control method and the emission color control program mounted thereon can more appropriately conceptually express an image by the illumination device LD for gradation illumination.

Next, each aspect of the area selection process in the above-described process S14 will be described. As described above, the area selection unit 63 can take, for example, the first to sixth modes, and the area selection process of the process S14 can operate in the following first to sixth modes accordingly.

First, in the case of the region selection unit 63 according to the first aspect described above, among the block regions ARn sampled by the image sampling unit 631 by the selection unit 633 in the region selection unit 63 of the SP-side control processing unit PC. Thus, at least two or more block areas ARm in which any one of the hue, brightness, and saturation of the representative color differs from the adjacent block area ARn by a predetermined first threshold value are selected as the plurality of areas. . For example, the block area ARm is selected in descending order of the difference among hue, brightness, and saturation. The first threshold value is set to an appropriate value for each of hue, brightness, and saturation. For example, with respect to an image in which the morning sun rises from the horizontal line shown in FIG. 14A, in this case, as shown in FIG. 14C, a block area AR19 in which the representative color is blue and the morning sun are shown. The copied block area AR56 whose representative color is yellow is selected. Then, based on the blue and yellow colors of the block areas AR19 and AR56 selected as described above by the area selection section 63 by the color determination section 64 of the SP-side control processing section PC, as shown in FIG. And first and second colors of the second light are determined.

According to the first aspect, any one of the hue, brightness, and saturation of the representative color differs from the adjacent block area ARn by a predetermined first threshold or more from among the plurality of block areas ARn in the image. The block area ARm is selected. For this reason, such an illumination system LS, an emission color control device (smartphone SP in the above example), an emission color control method and an emission color control program (hereinafter referred to as “illumination system etc.” in the description of each aspect). ”), A block area ARm having a characteristic color is selected from the image. Therefore, the illumination system LS or the like can more appropriately conceptually express an image by the illumination device LD for gradation illumination.

In the case of the region selection unit 63 of the second mode described above, the selection unit 633 in the region selection unit 63 of the SP-side control processing unit PC selects from among the plurality of block regions ARn sampled by the image sampling unit 631. The block areas ARm in which the hue difference, saturation difference, and brightness difference in the representative colors are within a predetermined range are selected and grouped into one group GRn, and the total area of the block areas ARm belonging to the grouped group is a predetermined number. At least two or more groups GRm are selected as the plurality of block areas ARm from the group GRm having two or more thresholds. For example, the group GRm is selected in order of increasing area. The second threshold value is set to an appropriate area. For example, for the image shown in FIG. 14A, in this case, as shown in FIG. 15, there is one block area AR12 to AR19, AR21 to AR210, AR32 to AR39 representing the sky and having a representative color of blue. Block areas AR51 to AR510, which are grouped into the first group GR1, and whose representative color is yellow, are grouped into another second group GR2, and block areas AR62 to AR69, AR71 to which the representative color is amber. AR710 and AR82 to AR89 are grouped into another third group GR3, and the first and third groups GR1 and GR3 are selected in order of increasing area. Then, the color determination unit 64 of the SP-side control processing unit PC converts the blue and amber systems of the first and third groups GR1, 3 selected as described above by the region selection unit 63 as shown in FIG. Based on the first and second colors of the first and second light are determined.

According to the second aspect, block areas ARm whose representative colors are within a predetermined range are selected from a plurality of block areas ARn in the image, and are grouped into one group GRn, and the grouped groups At least two or more groups GRm are selected as the plurality of block areas ARm from the group GRm in which the total area of the block areas ARm belonging to GRn is equal to or greater than a predetermined second threshold value. Therefore, in the illumination system LS or the like, a block area ARm (group GRm) having the same color within a certain range and distributed over a relatively wide range is selected from a plurality of block areas in the image. . Therefore, such an illumination system LS and the like can more appropriately conceptually express an image by the illumination device LD for gradation illumination.

In the case of the region selection unit 63 of the third aspect described above, from the plurality of block regions ARn sampled by the image sampling unit 631 by the selection unit 633 in the region selection unit 63 of the SP-side control processing unit PC, The block areas ARm in which the hue difference, saturation difference, and brightness difference in the representative colors are within a predetermined range are selected and grouped into one group GRn, and the total area of the block areas ARm belonging to the grouped group is a predetermined number. At least two or more groups GRm are selected as the plurality of block areas ARm from among the groups GRm that are two or more thresholds and whose saturation or lightness is not less than a predetermined third threshold. For example, the group GRm is selected in the order of increasing area and in order of increasing brightness and saturation (bright order, vivid order). The lightness of the group GRm is, for example, the average value of the lightnesses in the representative colors of the block regions belonging to the group GRm. The saturation of the group GRm is, for example, the representative color of the block regions belonging to the group GRm. The average value of each saturation at. The third threshold value is set to an appropriate value for each of brightness and saturation. For example, with respect to the image shown in FIG. 14A, in this case, as shown in FIG. 16, there is one block area AR12 to AR19, AR21 to AR210, AR32 to AR39 representing the sky and having a blue representative color. Block areas AR51 to AR510, which are grouped into the first group GR1, and whose representative color is yellow, are grouped into another second group GR2, and block areas AR62 to AR69, AR71 to which the representative color is amber. AR710 and AR82 to AR89 are grouped into another third group GR3. The first and second are arranged in order of increasing area and in order of increasing brightness and saturation (brightness order, vivid order). Groups GR1 and GR2 are selected. Then, the color determination unit 64 of the SP-side control processing unit PC converts the blue and yellow systems of the first and second groups GR1 and GR2 selected as described above by the region selection unit 63 as shown in FIG. Based on the first and second colors of the first and second light are determined.

According to the third aspect, the block areas ARm whose representative colors are within a predetermined range are selected from the plurality of block areas ARn in the image and are grouped into one group GRn, and the grouped groups From the group GRm in which the total area of the block areas ARm belonging to GRn is equal to or greater than a predetermined second threshold and the saturation or lightness is equal to or greater than a predetermined third threshold, the plurality of block areas ARm are at least two or more. A plurality of groups GRm are selected. For this reason, in the illumination system LS or the like, among the plurality of block areas ARn in the image, the block areas that are the same color within a certain range and are distributed over a relatively wide range can be emitted by the illumination device LD. ARm (group GRm) is selected. Therefore, such an illumination system LS and the like can more appropriately conceptually express an image by the illumination device LD for gradation illumination.

In the case of the region selection unit 63 of the above-described fourth aspect, the selection unit 633 in the region selection unit 63 of the SP-side control processing unit PC uses a plurality of block regions ARn sampled by the image sampling unit 631. A block area ARm in which any one of the hue, brightness, and saturation of the representative color differs from the adjacent block area ARn by a predetermined first threshold is at least one of the at least two block areas ARm. At least one block area ARm is selected as one, and the hue difference, saturation difference, and brightness difference in the representative color are within a predetermined range from among the plurality of block areas ARn sampled by the image sampling unit 631. Block areas ARm are selected and grouped into one group GRn, and the total area of the block areas ARm belonging to the group GRn There from the group GRm is equal to or greater than a predetermined second threshold value, wherein the at least one block area ARm is selected as at least one other of the at least two or more of the plurality of block areas ARm. For the image shown in FIG. 14A, in this case, as shown in FIG. 17, the block area AR56 having the largest difference in hue, lightness, and saturation and whose representative color showing the sunrise is yellow is selected. Then, the block areas AR12 to AR19, AR21 to AR210, AR32 to AR39, which are representative of the sky and represent the sky, are grouped into one first group GR1, and the block area AR51 whose representative color is yellow AR510 are grouped into another one second group GR2, and block areas AR62 to AR69, AR71 to AR710, AR82 to AR89 whose representative colors are amber systems are grouped into another one third group GR3, The first group GR1 having the largest area is selected. Then, based on the yellow and blue colors of the block area AR56 and the first group GR1 selected as described above by the area selection section 63 by the color determination section 64 of the SP-side control processing section PC as shown in FIG. , First and second colors of the first and second light are determined.

According to the fourth aspect, one of the hue, lightness, and saturation of the representative color differs from the block area ARn adjacent to the adjacent block area ARn by a predetermined first threshold value or more. At least one block area ARm is selected as at least one of the at least two or more block areas ARm, and the representative color has a predetermined range from the plurality of block areas ARn in the image. Block areas ARm within the group GRm are selected and grouped into one group ARn, and the total area of the block areas ARm belonging to the grouped group GRn is at least 2 from the group GRm that is equal to or greater than a predetermined second threshold. At least one group GRm as at least one of the plurality of block areas ARm. It is selected. Therefore, in the illumination system LS and the like, a block area ARm having a characteristic color is selected from the image, and the same color is selected within a certain range from the plurality of block areas ARn in the image. A block area ARm (group GRm) distributed over a relatively wide range is selected. Therefore, the illumination system LS or the like can more appropriately conceptually express an image by the illumination device LD for gradation illumination.

In the case of the region selection unit 63 of the fifth aspect described above, a partial region in the image represented by the image data acquired by the image acquisition unit 62 by the selection unit 633 in the region selection unit 63 of the SP-side control processing unit PC. The plurality of block areas ARm are selected from the above. This partial area may be determined by, for example, displaying an image on the display unit OT of the smartphone and designating the displayed image area on the touch panel by the user. The upper half, the lower half, the right half, the left half, and the like may be set in advance. For example, for the image shown in FIG. 14A, in this case, as shown in FIG. 18, an area in which the sky is copied is designated by the user as the partial area PAR. Then, for the designated partial region PAR, the at least two or more regions are selected by any one of the above-described first to fourth modes. In the example shown in FIG. 18, a case where the second mode is selected according to the above-described second mode is shown, and the first group GR <b> 1 whose representative color is blue is copied and the second whose representative color is yellow. The group GR2 is selected, and the first and second colors of the first and second lights are determined based on the blue and yellow colors of the selected first and second groups GR1 and GR2.

According to the fifth aspect, such an illumination system LS or the like selects the plurality of block areas ARm from among the partial areas in the image, so that the image can be deformed while paying attention to a specific area. Therefore, the illumination system LS or the like can more appropriately conceptually express an image by the illumination device LD for gradation illumination. For example, when the partial area is designated by the user as described above, the illumination system LS or the like expresses the image more appropriately and conceptually according to the user's preference by the illumination device LD of gradation illumination. it can.

In the case of the region selection unit 63 of the sixth aspect described above, the gradation in the image represented by the image data acquired by the image acquisition unit 62 is obtained by the selection unit 633 in the region selection unit 63 of the SP-side control processing unit PC. A plurality of areas are selected from the gradation areas. The gradation area in the image is determined, for example, for each block area ARn along one direction by determining whether the hue, brightness, and saturation of each representative color sequentially change within a certain range. Sought by. As a result of the determination, each block area changing within the certain range forms a gradation area, while each block area not changing within the certain range does not form a gradation area. For example, with respect to the image shown in FIG. 14A, in this case, as shown in FIG. 19, an area in which the sky is captured is determined as the gradation area GAR. And the area | region of the both ends of this gradation area | region GAR is selected as said at least 2 or more area | region. Then, the color determination unit 64 of the SP-side control processing unit PC, as shown in FIG. 19, based on the blue color and the orange color in the regions at both ends selected as described above by the region selection unit 63. First and second colors of the first and second light are determined. Note that the at least two or more of the plurality of regions may be selected for the gradation region GAR according to any of the first to fourth aspects described above.

According to the sixth aspect, such an illumination system LS or the like selects a plurality of areas from the gradation area GAR that is originally gradation in the image. Therefore, the illumination system LS or the like can more appropriately conceptually express an image by the illumination device LD for gradation illumination.

FIG. 20 is a diagram for explaining an operation of determining a color by a designated color in the illumination system of the embodiment. FIG. 21 is a diagram for explaining an operation of determining a color by color correction in the illumination system of the embodiment.

In the above-described embodiment, the SP-side control processing unit PC of the smartphone SP further includes a specified color receiving unit 66 that receives a specified color specified by the user, as indicated by a broken line in FIG. The color determination unit 64 of the control processing unit PC selects the representative color in the plurality of block areas ARm selected by the selection unit 633 of the area selection unit 63 based on the specified color received by the specified color reception unit 66. It may be configured to determine the first and second colors of the first and second light. The designated color receiving unit 66 displays, for example, a color sample composed of a plurality of representative colors arranged in a two-dimensional array on the display unit OT of the smartphone, and displays the representative color region of the displayed color sample on the touch panel. The color specified by the user may be received, and for example, a color is assigned to each of the plurality of switches in the SP-side input unit IN (for example, R, G, B colors are assigned to the first to third switches). Allocation), the user's designated color may be received by a switch operation by the user. For example, when four block areas ARm are selected for the image shown in FIG. 14A by the area selection unit 63 of any of the first to sixth aspects described above as shown in FIG. The two colors close to the designated color designated by the user are selected and determined from the four representative colors in the four block areas ARm.

Such an illumination system LS, a light emission color control device (smart phone SP in the above example), a light emission color control method and a light emission color control program mounted thereon receive a color designation from the user, and the designation received this designation First and second colors of the first and second light are determined based on color. Therefore, the lighting system LS, the light emission color control device, the light emission color control method and the light emission color control program implemented therein are conceptually more appropriately imaged according to the user's preference by the illumination device LD for gradation illumination. Can express.

In the above-described embodiment, the SP-side control processing unit PC of the smartphone SP has a predetermined saturation or lightness in each of the first and second colors determined by the color determination unit 64, as indicated by a broken line in FIG. A color correction unit that corrects the first and second colors determined by the color determination unit 64 so that the saturation or lightness not higher than the fourth threshold is not lower than the fifth threshold. 67, and the signal generation unit 65 generates signals representing the first and second colors determined by the color determination unit 64 and corrected by the color correction unit 67. , May be configured. These fourth and fifth threshold values are appropriately set according to the color that can be emitted by the illumination device LD. For example, when the first and second groups GR1 and GR2 are selected for the image shown in FIG. 14A by the region selection unit 63 of any of the first to sixth modes described above, as shown in FIG. In this case, the color correction is performed so that the two representative colors in the two first and second groups GR1 and GR2 have a saturation or lightness equal to or lower than the fourth threshold value equal to or higher than the fifth threshold value.

In such an illumination system LS, a light emission color control device (smartphone SP in the above example), a light emission color control method and a light emission color control program mounted thereon, the saturation or brightness is not more than a predetermined fourth threshold value. In this case, the first and second colors determined by the color determination unit 64 are corrected so that the saturation or lightness not higher than the fourth threshold is not lower than the fifth threshold. For this reason, in such an illumination system LS, emission color control device, emission color control method and emission color control program mounted thereon, the first and second colors determined by the color determination unit 64 are the fourth threshold value. When the illumination device LD for gradation illumination cannot emit light because of the following saturation or lightness, the illumination device LD for gradation illumination can emit light by raising the saturation or brightness below the fourth threshold to the fifth threshold or more. It becomes like this.

In the above-described embodiment, the SP-side control processing unit PC of the smartphone SP has a predetermined unpleasant color in the first and second colors determined by the color determination unit 64, as indicated by a broken line in FIG. A color conversion unit 68 that converts the unpleasant color into a predetermined pleasant color, and the signal generation unit 65 includes the first and second colors determined by the color determination unit 64 and the color conversion unit 68. May be configured to generate signals representing the first and second colors converted in step 1. The unpleasant color and the pleasant color are defined by, for example, presenting various colors to a plurality of subjects and examining their impressions, and are set in the smartphone SP.

Such an illumination system LS, a light emission color control device (smartphone SP in the above example), a light emission color control method and a light emission color control program mounted thereon are the first and second colors determined by the color determination unit 64. Is a predetermined predetermined unpleasant color, the unpleasant color is converted to a predetermined predetermined pleasant color. Therefore, the illumination system LS, the emission color control device, the emission color control method and the emission color control program mounted thereon can conceptually express an image with a pleasant color by the illumination device LD of gradation illumination.

In the above-described embodiment, the emission color control device is mounted on the smartphone SP separate from the lighting device LD, but may be mounted on the lighting device LD and integrated with the lighting device LD. In such a case, each unit functionally configured in the SP-side control processing unit PC illustrated in FIG. 2 is functionally configured in the LD-side control processing unit 21 except for the signal generation unit 65. The image conceptually expressed by gradation illumination is acquired via the LD side Bluetooth communication module 24 and stored in the LD side storage unit 22, for example. Even with such a configuration, the same effects as those of the above-described embodiment can be obtained.

This specification discloses various modes of technology as described above, and the main technologies are summarized below.

The light emission control device according to one aspect controls each color of the plurality of lights in the lighting device that emits a plurality of lights of different colors such that a part of the plurality of lights overlap each other in a radiation angle region. An emission color control device that acquires image data representing an image; and an area selection unit that selects a plurality of areas from the image represented by the image data acquired by the image acquisition unit; A color determination unit that determines each color of the plurality of lights based on color information in a plurality of regions selected by the region selection unit, and a color determination unit that outputs the color to the illumination device. And a signal generation unit for generating a signal representing the selected color.

Such a lighting device to be controlled by the light emission color control device emits a plurality of lights of different colors so that a part of the plurality of lights overlap each other in a radiation angle region, so that so-called gradation illumination can be performed. . The emission color control device selects a plurality of regions from the image, and determines each color of the plurality of lights based on each color information. Therefore, the emission color control device can be deformed by simplifying the image that is the basis of the gradation illumination. Therefore, the light emission color control device can conceptually express an image by the illumination device of gradation illumination.

In another aspect, in the above-described light emission color control device, the region selection unit divides an image represented by the image data acquired by the image acquisition unit into a plurality of block regions in a predetermined shape, An image sampling unit that samples the image, and a representative color that represents the color of the block area based on color information in the block area in each of the plurality of block areas sampled by the image sampling unit By obtaining, an image quantization unit that quantizes each color of each of the plurality of block regions, and a plurality of block regions sampled by the image sampling unit are quantized by the image quantization unit. A selection unit that selects a plurality of block regions as the plurality of regions based on the representative color, and the color determination unit includes a plurality of blocks selected by the selection unit of the region selection unit Determining a respective color of the plurality of light based on the respective representative colors in frequency.

Since such an emission color control device converts an image that is the basis of gradation illumination into an image sample and quantizes the image, it can be deformed taking advantage of the characteristics of the image. Therefore, the luminescent color control device can more appropriately conceptually express an image by the illumination device of gradation illumination.

In another aspect, in the above-described light emission color control device, the selection unit of the region selection unit performs the above-described block region on the adjacent block region from among the plurality of block regions sampled by the image sampling unit. A block area in which any one of hue, brightness, and saturation of the representative color differs by a predetermined first threshold or more is selected as the plurality of block areas.

Such a light emission color control device includes a block in which any one of the hue, brightness, and saturation of the representative color differs from the adjacent block area by a predetermined first threshold or more from among a plurality of block areas in the image. Select an area. For this reason, in the light emission color control device, a block region having a characteristic color is selected from the image. Therefore, the luminescent color control device can more appropriately conceptually express an image by the illumination device of gradation illumination.

In another aspect, in the above-described light emission color control device, the selection unit of the region selection unit may select a hue difference or a saturation of the representative color from among a plurality of block regions sampled by the image sampling unit. Select block areas whose brightness difference and brightness difference are within a predetermined range and group them into one group, and from the group where the total area of the block areas belonging to the collected group is equal to or greater than a predetermined second threshold, A plurality of groups are selected as a plurality of block areas.

Such a light emission color control device selects block areas in which the representative color is within a predetermined range from a plurality of block areas in the image, collects them into one group, and blocks areas belonging to the collected group A plurality of groups are selected as the plurality of block regions from the group whose total area is equal to or greater than a predetermined second threshold. For this reason, in the light emission color control device, a block region (group) having the same color within a certain range and distributed over a relatively wide range is selected from a plurality of block regions in the image. Therefore, the luminescent color control device can more appropriately conceptually express an image by the illumination device of gradation illumination.

In another aspect, in the above-described light emission color control device, the selection unit of the region selection unit may select a hue difference or a saturation of the representative color from among a plurality of block regions sampled by the image sampling unit. Block areas having a degree difference and a brightness difference within a predetermined range are selected and grouped into one group, and the total area of the block areas belonging to the group is equal to or greater than a predetermined second threshold, and the saturation or brightness is A plurality of groups are selected as the plurality of block regions from among groups that are equal to or greater than a predetermined third threshold value.

Such a light emission color control device selects block areas in which the representative color is within a predetermined range from a plurality of block areas in the image, collects them into one group, and blocks areas belonging to the collected group A plurality of groups are selected as the plurality of block regions from a group in which the total area is equal to or greater than a predetermined second threshold value and the saturation or lightness is equal to or greater than a predetermined third threshold value. For this reason, in the light emission color control device, block regions (groups) that can emit light by the illumination device and are distributed over a relatively wide range of the same color within a certain range from among a plurality of block regions in the image. ) Is selected. Therefore, the luminescent color control device can more appropriately conceptually express an image by the illumination device of gradation illumination.

In another aspect, in the above-described light emission color control device, the selection unit of the region selection unit performs the above-described block region on the adjacent block region from among the plurality of block regions sampled by the image sampling unit. Selecting at least one block area as a block area in which any one of hue, brightness and saturation of a representative color differs by a predetermined first threshold or more as at least one of the plurality of block areas; From among the plurality of block areas sampled in step 1, block areas whose hue difference, saturation difference, and brightness difference in the representative color are within a predetermined range are selected and grouped into one group. Select at least one group as at least one of the plurality of block regions from a group in which the total area of the block regions to which it belongs is equal to or greater than a predetermined second threshold That.

Such a light emission color control device includes a block in which any one of the hue, brightness, and saturation of the representative color differs from the adjacent block area by a predetermined first threshold or more from among a plurality of block areas in the image. At least one region is selected as at least one of the plurality of block regions, and one block region having the representative color within a predetermined range is selected from the plurality of block regions in the image. The group is grouped, and at least one group is selected as at least one of the plurality of block regions from a group in which the total area of the block regions belonging to the group is not less than a predetermined second threshold. For this reason, in the light emission color control device, a block region having a characteristic color is selected from the image, and the same color within a certain range and relatively selected from the plurality of block regions in the image. Block areas (groups) distributed over a wide range are selected. Therefore, the luminescent color control device can more appropriately conceptually express an image by the illumination device of gradation illumination.

In another aspect, in the above-described light emission color control devices, the selection unit of the region selection unit includes the plurality of regions from among a partial region in an image represented by the image data acquired by the image acquisition unit. Select the block area.

Such an emission color control device selects the plurality of block areas from among the partial areas in the image, so that the image can be deformed by paying attention to a specific area. Therefore, the luminescent color control device can more appropriately conceptually express an image by the illumination device of gradation illumination. Further, for example, when the partial area is designated by the user, the light emission color control device can conceptually express the image more appropriately according to the user's preference by the illumination device of gradation illumination.

In another aspect, in the above-described emission color control device, the selection unit of the region selection unit is a gradation region that is a gradation in an image represented by the image data acquired by the image acquisition unit. A plurality of regions are selected from the above.

Such a light emission color control device selects a plurality of areas from gradation areas that are originally gradations in the image. Therefore, the luminescent color control device can more appropriately conceptually express an image by the illumination device of gradation illumination.

In another aspect, the above-described emission color control device further includes a specified color receiving unit that receives a specified color specified by a user, and the color determining unit is selected by the selecting unit of the region selecting unit Each color of the plurality of lights is determined based on the designated color received by the designated color receiving unit from the representative colors in the plurality of block areas.

Such a light emission color control device receives a color designation from the user, and determines each color of the plurality of lights based on the designated color that has received this designation. Therefore, the light emission color control device can more appropriately conceptually express an image according to the user's preference by the illumination device of gradation illumination.

In another aspect, in the above-described emission color control device, the image quantization unit uses a predetermined statistical value of color information in the block area as the representative color. Preferably, the predetermined statistical value is any one of an average value, a weighted average value, a median value, and a median value.

Since such a light emission color control device determines a representative color by a statistical value, the representative color of the block area can be determined more appropriately. Therefore, the luminescent color control device can more appropriately conceptually express an image by the illumination device of gradation illumination.

The median is the most frequent segment of the frequency distribution for all pixels of the image, where the horizontal axis is the pixel value segmented for each predetermined range and the vertical axis is the frequency for each segment. Value. More specifically, for example, the median value of the hue is a value of the most frequently classified section in the hue frequency distribution obtained by calculating the hue frequency distribution for all pixels of the image. The median value of brightness is the value of the most frequently classified section in the brightness distribution of brightness obtained for all pixels of the image. The median value of saturation is the value of the most frequent section in the saturation frequency distribution obtained by calculating the saturation frequency distribution for all pixels of the image. The color defined by the median value of hue, the median value of lightness, and the median value of saturation is a representative color.

The central value is the value of the smallest segment with a frequency in the frequency distribution for all pixels of the image, where the horizontal axis is the pixel value segmented for each predetermined range and the vertical axis is the frequency for each segment It is the middle value between (the minimum value of the frequency distribution category) and the value of the maximum frequency category (the maximum value of the frequency distribution category). For example, the center value of the hue is obtained by calculating the frequency distribution of the hue for all pixels of the image, and is the middle of the minimum value of the frequency distribution section and the maximum value of the frequency distribution section in the calculated frequency distribution of the hue. Value. The central value of the brightness is the value between the minimum value of the frequency distribution section and the maximum value of the frequency distribution section in the calculated brightness distribution for all pixels of the image. is there. The central value of saturation is the center of the minimum value of the frequency distribution section and the maximum value of the frequency distribution section in the calculated saturation frequency distribution for all pixels of the image. Is the value of The color defined by the central value of hue, the central value of lightness, and the central value of saturation is a representative color.

In another aspect, in the above-described light emission color control device, when the saturation or brightness of each of the first and second colors determined by the color determination unit is equal to or less than a predetermined fourth threshold, A color correction unit configured to correct the first and second colors determined by the color determination unit so that saturation or brightness below a threshold value is equal to or higher than a fifth threshold value; and the signal generation unit includes the color determination unit A signal representing the first and second colors determined by the color correction unit and the first and second colors corrected by the color correction unit is generated.

In such a light emission color control device, when the saturation or lightness is equal to or lower than a predetermined fourth threshold, the color determination unit is configured so that the saturation or lightness equal to or lower than the fourth threshold is equal to or higher than a fifth threshold. The first and second colors determined in step 1 are corrected. For this reason, since the first and second colors determined by the color determination unit have a saturation or brightness that is less than or equal to the fourth threshold value, and cannot emit light by a lighting device with gradation illumination, the saturation that is less than or equal to the fourth threshold value Alternatively, by raising the brightness to the fifth threshold value or higher, light can be emitted by the illumination device with gradation illumination.

In another aspect, in the above-described light emission color control device, when the color determined by the color determination unit is a predetermined unpleasant color, the color conversion unit converts the unpleasant color into a predetermined pleasant color. The signal generation unit generates a signal representing the color determined by the color determination unit and converted by the color conversion unit.

Such a light emission color control device converts the unpleasant color into a predetermined predetermined pleasant color when the color determined by the color determination unit is a predetermined unpleasant color set in advance. Therefore, the light emission control device can conceptually express an image with a pleasant color by the illumination device of gradation illumination.

According to another aspect of the present invention, there is provided an emission color control method, wherein each of the plurality of lights in the lighting device that emits a plurality of lights of different colors such that a part of the plurality of lights overlap each other in a radiation angle region. An emission color control method for controlling a color, an image acquisition step for acquiring image data representing an image, and a region for selecting a plurality of regions from an image represented by the image data acquired in the image acquisition step A color determination step for determining each color of the plurality of lights based on each color information in a plurality of regions selected in the region selection step, and the color determination step for outputting to the illumination device. A signal generation step of generating a signal representing each color of the plurality of lights determined in (1).

The emission color control program according to another aspect includes a plurality of lights having different colors, and each of the plurality of lights in the lighting device that emits the plurality of lights so that a part of the plurality of lights overlap each other in a radiation angle region. An emission color control program for controlling a color, wherein a computer acquires an image acquisition step of acquiring image data representing an image, and a plurality of regions from the image represented by the image data acquired in the image acquisition step A region selection step to select, a color determination step to determine each color of the plurality of lights based on each color information in a plurality of regions selected in the region selection step, and to output to the lighting device, A light emission color control program for executing a signal generation step of generating a signal representing each color of a plurality of lights determined in a color determination step.

An illumination system according to another aspect includes a lighting device that emits a plurality of lights of different colors such that a part of the plurality of lights overlap each other in a radiation angle region, and the plurality of lights in the lighting device A light emission color control device for controlling the respective colors, and the light emission color control device is any one of the above light emission color control devices.

An illumination device according to another aspect includes a plurality of light sources capable of emitting light of a plurality of colors, and a part of light emitted from a certain light source of the plurality of light sources and the plurality of light sources. A light source unit that emits the plurality of lights so that a part of light emitted from another of the plurality of light sources overlaps each other in a radiation angle region, and the plurality of lights that emit different colors. A control unit that controls a plurality of light sources; and an image acquisition unit that acquires image data representing an image, wherein the control unit includes a plurality of images represented by the image data acquired by the image acquisition unit. A region selection unit for selecting a region, a color determination unit for determining each color of the plurality of lights based on each color information in the plurality of regions selected by the region selection unit, and the color determination unit The plurality of lights to emit the plurality of lights in color Controlling the and a light emission control unit.

In another aspect of the illumination method, a plurality of light sources capable of emitting light of a plurality of colors are respectively converted into a plurality of lights of different colors, and a part of each of the plurality of lights is mutually emitted in a radiation angle region. An illumination method for emitting radiation in an overlapping manner, an image acquisition step for acquiring image data representing an image, and a region selection for selecting a plurality of regions from an image represented by the image data acquired in the image acquisition step A color determination step of determining each color of the plurality of lights based on each color information in a plurality of regions selected in the region selection step, and the first and the colors determined by the color determination unit A light emission control step of controlling the plurality of light sources so as to emit second light.

Such an emission color control method, an emission color control program, an illumination system, an illumination device, and an illumination method select a plurality of areas from an image and change the colors of the plurality of lights based on the respective color information. decide. For this reason, the light emission color control method, the light emission color control program, the illumination system, the illumination device, and the illumination method can be deformed by simplifying the image that is the basis of the gradation illumination. Therefore, the light emission color control method, the light emission color control program, the illumination system, the illumination device, and the illumination method can conceptually represent an image by a gradation illumination device.

This application is based on Japanese Patent Application No. 2014-99469 filed on May 13, 2014, the contents of which are included in the present application.

In order to express the present invention, the present invention has been properly and fully described through the embodiments with reference to the drawings. However, those skilled in the art can easily change and / or improve the above-described embodiments. It should be recognized that this is possible. Therefore, unless the modifications or improvements implemented by those skilled in the art are at a level that departs from the scope of the claims recited in the claims, the modifications or improvements are not covered by the claims. To be construed as inclusive.

According to the present invention, it is possible to provide a light emission color control device, a light emission color control method, a light emission color control program, a lighting system, a lighting device, and a lighting method.

Claims

A light emission color control device that controls each color of the plurality of lights in an illumination device that emits a plurality of lights of different colors such that a part of the plurality of lights overlaps each other in a radiation angle region,
An image acquisition unit for acquiring image data representing an image;
An area selection unit that selects a plurality of areas from the image represented by the image data acquired by the image acquisition unit;
A color determination unit that determines each color of the plurality of lights based on each color information in the plurality of regions selected by the region selection unit;
An emission color control device comprising: a signal generation unit configured to generate a signal representing a color determined by the color determination unit in order to output to the illumination device.
The region selection unit
An image sampling unit that samples the image by dividing the image represented by the image data acquired by the image acquisition unit into a plurality of block regions in a predetermined shape;
In each of the plurality of block regions sampled by the image sampling unit, each color of each of the plurality of block regions is obtained by obtaining a representative color representing the color of the block region based on color information in the block region. An image quantization unit that quantizes
A selection unit that selects a plurality of block regions as the plurality of regions based on a representative color quantized by the image quantization unit from the plurality of block regions sampled by the image sampling unit; With
The said color determination part determines each color of these several light based on each representative color in the several block area | region selected by the selection part of the said area | region selection part. Emission color control device.
The selection unit of the region selection unit is any one of hue, brightness, and saturation of the representative color with respect to an adjacent block region from among the plurality of block regions sampled by the image sampling unit. 3. The emission color control device according to claim 2, wherein block areas different from each other by a predetermined first threshold or more are selected as the plurality of block areas.
The selection unit of the region selection unit includes a block region in which a hue difference, a saturation difference, and a brightness difference in the representative color are within a predetermined range from among a plurality of block regions sampled by the image sampling unit. And grouping them into one group, and selecting a plurality of groups as the plurality of block regions from a group in which the total area of the block regions belonging to the grouped group is equal to or greater than a predetermined second threshold value. The luminescent color control device according to claim 2.
The selection unit of the region selection unit includes a block region in which a hue difference, a saturation difference, and a brightness difference in the representative color are within a predetermined range from among a plurality of block regions sampled by the image sampling unit. Are selected and grouped into one group, and the total area of the block regions belonging to the grouped group is equal to or greater than a predetermined second threshold and the saturation or lightness is equal to or greater than a predetermined third threshold, The light emission color control device according to claim 2, wherein a plurality of groups are selected as a plurality of block regions.
The selection unit of the region selection unit is:
Among the plurality of block areas sampled by the image sampling unit, a block area in which any one of hue, brightness, and saturation of the representative color differs from a neighboring block area by a predetermined first threshold or more Selecting at least one block area as at least one of the plurality of block areas,
From among a plurality of block areas sampled by the image sampling unit, block areas having a hue difference, saturation difference, and brightness difference in the representative color are selected and grouped into one group, The at least one group is selected as at least one of the plurality of block regions from a group in which a total area of the block regions belonging to the group is equal to or greater than a predetermined second threshold value. The luminescent color control device described in 1.
The selection unit of the region selection unit selects the plurality of block regions from partial regions in an image represented by the image data acquired by the image acquisition unit. The light emission color control apparatus of any one of Claim 6.
The selection unit of the region selection unit selects a plurality of regions from gradation regions that are gradations in an image represented by the image data acquired by the image acquisition unit. The luminescent color control device according to any one of claims 7 to 9.
A designated color receiving unit for receiving a designated color designated by the user;
The color determination unit is configured to select each color of the plurality of lights based on the designated color received by the designated color reception unit from among the representative colors in the plurality of block regions selected by the selection unit of the region selection unit. The emission color control device according to any one of claims 2 to 8, wherein:
The emission color control device according to any one of claims 2 to 9, wherein the image quantization unit uses a predetermined statistical value of color information in the block region as the representative color.
When the saturation or brightness of each of the first and second colors determined by the color determination unit is not more than a predetermined fourth threshold value, the saturation or brightness not more than the fourth threshold value is not less than the fifth threshold value. A color correction unit that corrects the first and second colors determined by the color determination unit,
The said signal generation part produces | generates the signal showing the 1st and 2nd color determined by the said color determination part, Comprising: The 1st and 2nd color correct | amended by the said color correction part. The emission color control device according to any one of claims 1 to 10.
When the color determined by the color determination unit is a predetermined unpleasant color, further comprising a color conversion unit that converts the unpleasant color into a predetermined pleasant color,
12. The signal generation unit according to claim 1, wherein the signal generation unit generates a signal representing the color determined by the color determination unit and converted by the color conversion unit. The luminescent color control device described in 1.
A light emission color control method for controlling each color of the plurality of lights in an illumination device that emits a plurality of lights of different colors such that a part of the plurality of lights overlap each other in a radiation angle region,
An image acquisition step of acquiring image data representing an image;
A region selection step of selecting a plurality of regions from the image represented by the image data acquired in the image acquisition step;
A color determination step of determining each color of the plurality of lights based on each color information in the plurality of regions selected in the region selection step;
And a signal generation step of generating a signal representing each color of the plurality of lights determined in the color determination step for output to the lighting device.
A light emission color control program for controlling each color of the plurality of lights in an illuminating device that emits a plurality of lights of different colors such that a part of the plurality of lights overlap each other in a radiation angle region,
On the computer,
An image acquisition step of acquiring image data representing an image;
A region selection step of selecting a plurality of regions from the image represented by the image data acquired in the image acquisition step;
A color determination step of determining each color of the plurality of lights based on each color information in the plurality of regions selected in the region selection step;
A signal generation step of generating a signal representing each color of the plurality of lights determined in the color determination step in order to output to the lighting device;
An emission color control program for execution.
A lighting device that emits a plurality of lights of different colors such that a part of the plurality of lights overlap each other in a radiation angle region;
An emission color control device that controls each color of the plurality of lights in the illumination device;
The illumination system according to any one of claims 1 to 12, wherein the emission color control device is the emission color control device.
A plurality of light sources capable of emitting light of a plurality of colors, a part of light emitted from a certain light source of the plurality of light sources, and light emitted from another light source of the plurality of light sources A light source unit that emits the plurality of lights such that a part of the light source overlaps with each other in a radiation angle region;
A control unit that controls the plurality of light sources to emit the plurality of lights in different colors;
An image acquisition unit that acquires image data representing an image,
The controller is
An area selection unit that selects a plurality of areas from the image represented by the image data acquired by the image acquisition unit;
A color determination unit that determines each color of the plurality of lights based on each color information in the plurality of regions selected by the region selection unit;
An illumination device comprising: a light emission control unit that controls the plurality of light sources so as to emit the plurality of lights with the colors determined by the color determination unit.
An illumination method in which a plurality of light sources capable of emitting a plurality of colors of light are radiated so that a plurality of light of different colors and a part of each of the plurality of lights overlap each other in a radiation angle region There,
An image acquisition step of acquiring image data representing an image;
A region selection step of selecting a plurality of regions from the image represented by the image data acquired in the image acquisition step;
A color determination step of determining each color of the plurality of lights based on each color information in the plurality of regions selected in the region selection step;
And a light emission control step of controlling the plurality of light sources so as to emit the first and second lights with the color determined by the color determination unit.