JP7429866B2 - Lighting system and lighting method - Google Patents

Description

The present invention relates to a lighting system and a lighting method.

2. Description of the Related Art Conventionally, lighting devices for performances have been used in television studios, theaters, concert halls, and the like. As a technique for controlling such a lighting device, Patent Document 1 discloses a lighting control device that allows color adjustment settings to be made easily and intuitively.

Japanese Patent Application Publication No. 2014-099289

The present invention provides a lighting system and a lighting method that can match the emission color of a lighting device to the emission color of a specific pixel of a display device displaying video content.

A lighting system according to one aspect of the present invention includes a first acquisition unit that acquires video content, video dimming curve information indicating a relationship between a pixel value and luminance in a display device, and a dimming value and a luminance in a lighting device. a second acquisition unit that acquires lighting dimming curve information indicating a relationship with luminance; and an output unit that outputs a value obtained by correcting based on the light curve information as a dimming value for the lighting device.

A lighting method according to one aspect of the present invention includes a first acquisition step of acquiring video content, video dimming curve information indicating a relationship between pixel values and luminance in a display device, and a dimming value in a lighting device. a second acquisition step of acquiring illumination dimming curve information indicating a relationship with luminance; and an output step of outputting a value obtained by correcting based on the light curve information as a dimming value for the lighting device.

The lighting system and lighting method of the present invention can match the emission color of the lighting device to the emission color of a specific pixel of a display device displaying video content.

FIG. 1 is a block diagram showing the functional configuration of a lighting system according to an embodiment. FIG. 2 is a diagram illustrating an example of the correspondence between a plurality of lighting devices and pixels of video content. FIG. 3 is an example of a single lighting device installed outdoors. FIG. 4 is a diagram showing an example of a moving image dimming curve of a green pixel and an illumination dimming curve of a green light source. FIG. 5 is a flowchart of operation example 1 of the lighting system according to the embodiment. FIG. 6 is a flowchart of operation example 2 of the lighting system according to the embodiment. FIG. 7 is a flowchart of operation example 3 of the lighting system according to the embodiment.

Hereinafter, embodiments will be specifically described with reference to the drawings. Note that the embodiments described below are all inclusive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, order of steps, etc. shown in the following embodiments are merely examples, and do not limit the present invention. Further, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims will be described as arbitrary constituent elements.

Note that each figure is a schematic diagram and is not necessarily strictly illustrated. Furthermore, in each figure, substantially the same configurations are denoted by the same reference numerals, and overlapping explanations may be omitted or simplified.

(Embodiment)
[composition]
First, an overview of a lighting system according to an embodiment will be explained. FIG. 1 is a block diagram showing the functional configuration of a lighting system according to an embodiment.

The lighting system 100 is a lighting system for production that can cause the lighting device 10 to emit light in the same color as a specific pixel included in the video content being played (displayed) by the display device 40. When video content is played back, the color of a specific pixel included in the video content changes over time, and the lighting system 100 can reflect this change in color over time in the emitted light color of the lighting device 10. can. For example, if the video content is content in which clouds move against a blue sky background, a change in color of a specific pixel in the video content in accordance with the movement of the clouds is reflected in the color of the light emitted by the lighting device 10.

For example, a plurality of lighting devices 10 are installed on the outer wall of a building such as a building, and each of the plurality of lighting devices 10 is associated with a pixel of video content. FIG. 2 is a diagram illustrating an example of the correspondence between a plurality of lighting devices 10 and pixels of video content.

The designated range R1 of the video content shown in FIG. 2(a) is associated with a specific region R2 of the outer wall of the building 80 shown in FIG. 2(b). As a result, the lighting devices L1 to L4 are associated with the pixels P1 to P4 of the video content, and emit light in the same color as the pixels P1 to P4.

Note that it is not essential that a plurality of pixels of video content be associated with a plurality of lighting devices 10 in consideration of positional relationships. For example, any one pixel in the video content may be associated with a single lighting device 10 installed outdoors as shown in FIG. FIG. 3 is an example of a single lighting device 10 installed outdoors.

[composition]
Next, the configuration of the lighting system 100 will be described with reference to FIG. 1 above. As shown in FIG. 1, the lighting system 100 includes a plurality of lighting devices 10, a controller 20, an information terminal 30, a display device 40, a camera 50, a content distribution server 60, and a sensor 70. Note that the lighting system 100 only needs to include at least one lighting device 10. Furthermore, the lighting system 100 may include a plurality of controllers 20, each of which controls one or more lighting devices 10.

The lighting device 10 is a lighting device installed outdoors, such as on the outer wall of a building 80. The lighting device 10 emits light based on the dimming value (specifically, the signal level of the DMX signal, etc.) output from the controller 20. Specifically, the lighting device 10 includes a red light source 11r, a green light source 11g, a blue light source 11b, and a white light source 11w. Note that it is not essential that the lighting device 10 include the white light source 11w, and the lighting device 10 may not include the white light source 11w.

Each of the red light source 11r, green light source 11g, blue light source 11b, and white light source 11w is realized by an LED chip or the like, and the luminance of each light source can be controlled independently. Thereby, changing the emission color of the lighting device 10 is realized. That is, the lighting device 10 has a dimming function and a color adjusting function. Note that each of the red light source 11r, the green light source 11g, the blue light source 11b, and the white light source 11w is a light emitting module using a semiconductor light emitting element such as a semiconductor laser, a solid state light emitting element such as an organic EL (Electro Luminescence), or an inorganic EL. It may be realized by

The controller 20 causes the lighting device 10 to emit light by outputting the dimming value provided from the information terminal 30 to the lighting device 10. Further, the controller 20 causes the display device 40 to display video content provided from the information terminal 30. The controller 20 is installed, for example, near the lighting device 10 (for example, inside the building 80), and communicates with the lighting device 10 and the information terminal 30 through a local communication network.

The information terminal 30 performs processing such as calculating a dimming value for causing the lighting device 10 to emit light in the same color as a specific pixel included in the video content displayed on the display device 40. The information terminal 30 is, for example, a personal computer, but may also be a cloud server. Specifically, the information terminal 30 includes an operation reception section 31, a communication section 32, a storage section 33, and an information processing section 34.

The operation accepting unit 31 accepts user operations. The operation reception unit 31 is realized by, for example, an input device such as a mouse and a keyboard.

The communication unit 32 is a communication circuit (communication module) through which the information terminal 30 communicates (transmits and receives information) with the controller 20, camera 50, content distribution server 60, sensor 70, and the like. The communication unit 32 is, for example, a wired communication circuit that performs wired communication, but may also be a wireless communication circuit that performs wireless communication. There are no particular limitations on the communication standard for communication performed by the communication unit 32.

The storage unit 33 is a storage device in which information (computer programs, etc.) necessary for the information processing unit 34 to perform information processing is stored. The storage unit 33 is realized by, for example, an HDD (Hard Disk Drive), but may also be realized by a semiconductor memory.

The information processing unit 34 performs information processing such as calculation processing of a dimming value. Specifically, the information processing unit 34 includes a first acquisition unit 35 that acquires video content, a second acquisition unit 36 that acquires video dimming curve information and illumination dimming curve information, and calculation of dimming values and It has an output unit 37 that performs output, and a content generation unit 38 that generates video content based on the sensing result of the sensor 70. The information processing unit 34 is implemented, for example, by a microcomputer, but may also be implemented by a processor.

The display device 40 is a device for displaying video content and for monitoring video content. The display device 40 is, for example, a personal computer with a display. Note that the display device 40 is located in a space different from the space in which the lighting device 10 is installed (outside the building 80), such as inside the building 80, for example.

The camera 50 photographs a video and transmits the photographed video to the information terminal 30. Content distribution server 60 distributes video content to information terminal 30. The sensor 70 is, for example, a sensor that senses the outdoor environment, and specifically, is an air volume sensor, an illuminance sensor, a temperature sensor, a humidity sensor, or the like.

[Calculation process of dimming value]
As described above, the lighting system 100 can cause the lighting device 10 to emit light in the same color as a specific pixel included in the video content being displayed on the display device 40. For example, the pixel value (each pixel value of sub-pixel (RGB); the same applies hereinafter) of the video content is a digital value between 0 and 255, and the dimming value output to the lighting device 10 (for example, the dimming value of the DMX signal). When the light level) is a digital value of 0 or more and 255 or less, the information terminal 30 outputs each RGB pixel value of the specific pixel as it is as each dimming value of the red light source 11r, green light source 11g, and blue light source 11b. This seems to allow the lighting device 10 to emit light in the same color as a specific pixel.

However, the video dimming curve (in other words, gamma curve) showing the relationship between the pixel value and the light emission brightness in the display device 40 and the illumination light control curve showing the relationship between the light control value and the light emission brightness in the lighting device 10 are different from each other. If they are different, if each RGB pixel value of a specific pixel is output as it is as each dimming value of the red light source 11r, green light source 11g, and blue light source 11b, the lighting device 10 can be caused to emit light in the same color as the specific pixel. I can't. FIG. 4 is a diagram showing an example of a moving image light control curve of a green pixel (G) and an illumination light control curve of the green light source 11g.

The moving picture dimming curve shown in FIG. 4(a) is a so-called 2.3 power curve. When the pixel value is 127, the luminance of the pixel of the display device 40 (percentage of the maximum luminance) is (127/255)^2.3=20.1%.

On the other hand, the illumination dimming curve shown in FIG. 4(b) is a so-called square curve. When the dimming value is 127, the emission brightness (percentage of the maximum emission brightness) of the lighting device 10 is (127/255)^2=24.8%.

In this way, if the pixel value of the green pixel is directly output as the dimming value of the green light source 11g, the luminance will differ by 4.7%. In the example of FIG. 4, the dimming value for causing the green light source 11g to emit light with the same luminance as the green pixel with the pixel value 127 is 114 instead of 127.

Therefore, in the lighting system 100, when the video dimming curve of the green pixel is an x-power curve and the illumination dimming curve of the green light source _11g is an The value corrected based on the right side is calculated (output) as the dimming value _LG for the green light source 11g. Note that _CG is a coefficient for matching the color temperature of the illumination device 10 during full emission to the color temperature of the display device 40 during full emission, and is a numerical value of 0 to 255. _CG is 255 when the color temperature of the illumination device 10 when the light is emitted at full capacity is the same as the color temperature when the display device 40 is emitted at full capacity.

L _G = C _G × (P _G /255) ^ (x/X) ... Formula 1

Although not shown in FIG. 4, the same can be said of the pixel values of red pixels and the pixel values of blue pixels. Therefore, when the video dimming curve of the red pixel is a y-power curve and the illumination dimming curve of the red light source 11r is a y-power curve, the lighting system 100 calculates the red pixel value P _R by the following equation 2. A value corrected based on the right side is calculated (output) as a dimming value L _R for the red light source 11r. When the video dimming curve of the blue pixel is a Z-power curve and the illumination dimming curve of the blue light source 11b is a Z-power curve, the lighting system 100 calculates the blue pixel value P _B to the right side of Equation 3 below. A value corrected based on this is calculated (output) as a dimming value L _B for the blue light source 11b.

L _R =C _R ×(P _R /255)^(y/Y)...Formula 2
L _B =C _B ×(P _B /255)^(z/Z)...Formula 3

Note that the light control value _LR is an example of the first light control value, the light control value _LG is an example of the second light control value, and the light control value _LB is an example of the third light control value. It is.

[Operation example 1]
Next, a first operation example of the lighting system 100 including such a process of calculating a dimming value will be described. FIG. 5 is a flowchart of operation example 1 of the lighting system 100.

First, the first acquisition unit 35 of the information terminal 30 acquires video content (S11). For example, the operation reception unit 31 receives a video content selection operation from the user, and the first acquisition unit 35 acquires the selected video content. The user may select video content provided from the content distribution server 60, or may select video content stored in advance in the storage unit 33.

Next, the information processing unit 34 associates the lighting device 10 with the pixels of the video content (S12). For example, the operation reception unit 31 receives an operation for associating the selected video content with the lighting device 10 from the user, and the information processing unit 34 associates the lighting device 10 with the pixels of the video content based on such operation. map.

As explained using FIG. 2 above, for example, the user performs an operation to associate the range R1 of the video content with the specific area R2 of the outer wall of the building 80, and the information processing unit 34, based on this operation, L1 to L4 are associated with pixels P1 to P4 of the video content. In this case, the arrangement information of the lighting devices L1 to L4 is stored in advance in the storage unit 33, and the information processing unit 34 overlaps the range R1 and the specific region R2 so that their outlines match, based on the arrangement information. In this case, pixels that overlap with the lighting devices L1 to L4 can be determined as pixels P1 to P4.

Further, as explained using FIG. 3 above, when there is only one target lighting device 10, the user can perform an operation on the lighting device 10 to specify any one pixel in the video content. Then, the information processing unit 34 may associate the lighting device 10 with the designated pixel.

Next, the second acquisition unit 36 obtains video dimming curve information indicating the relationship between pixel values and luminance in the display device 40 and illumination dimming curve information indicating the relationship between the dimming value and luminance in the lighting device 10. Curve information is acquired (S13). The video dimming curve information and the illumination dimming curve information are stored in advance in the storage unit 33 by a user's manual operation, etc., and the second acquisition unit 36 acquires the video dimming curve information and the illumination dimming curve information from the storage unit 33. Obtain lighting dimming curve information. The second acquisition unit 36 acquires video dimming curve information from the display device 40 and acquires lighting dimming curve information from the lighting device 10 by making inquiries to the display device 40 and the lighting device 10 via the controller 20. You can.

The video dimming curve information includes the x, y, and z values (multipliers) in Equations 1 to 3 above, and the maximum brightness (pixel value 255) for green pixels, red pixels, and blue pixels. Information indicating the color temperature (such as 6000K) of white light emitted by the display device 40 when emitted is included. Similarly, the lighting dimming curve information includes the numerical values (multipliers) of X, Y, and Z in Equations 1, 2, and 3 above, and the maximum brightness of the green light source 11g, red light source 11r, and blue light source 11b. Information indicating the color temperature of white light emitted by the lighting device 10 when emitting light at a dimming value of 255 is included.

Here, if the color temperature indicated by the video dimming curve information and the color temperature indicated by the illumination dimming curve information are different, the output unit 37 converts the color temperature of the white light emitted by the lighting device 10 into the color temperature of the white light emitted by the display device 40. Color temperature adjustment (white balance adjustment) is performed to match the color temperature of the light (S14). Specifically, the lighting device 10 adjusts the green light source 11g, the red light source 11r, and the blue light source 11b so that their color temperatures are equal based on a color temperature adjustment algorithm stored in advance in the storage unit 33. The maximum value of at least one of the dimming values is changed from 255 to a value less than 255 (specified value). These changed values are used as C _G , C _R , and C _B in Equations 1, 2, and 3 above. That is, in step S14, the values of C _G , C _R , and C _B are determined. Note that when the color temperature indicated by the video dimming curve information and the color temperature indicated by the illumination dimming curve information are the same, the values of C _G , C _R , and C _B are all determined to be 255.

Next, the output unit 37 outputs the pixel values (pixel value P _G , pixel value P _R , and pixel value P _B ) are extracted (S15). The output unit 37 corrects the extracted pixel values based on Equations 1 to 3 above, thereby generating the light control values (light control value L _G , light control value L _R , and light control value) for the predetermined time. L _B ) is calculated (S16).

Here, when the lighting device 10 includes the white light source 11w, there is room for consideration as to how to determine the dimming value for the white light source 11w. For example, the output unit 37 outputs a dimming value L G , a dimming value L R , and a dimming value L _R that are used at the same timing (that is, have the same time stamp) as the dimming value L _w for the white light source _11w . Among the values _LB , the dimming value with the lowest luminance is adopted (S17). Thereby, the lighting system 100 can improve the total brightness of the light emitted by the lighting device 10 while minimizing the influence on the color tone. Note that the output unit 37 may set the dimming value for the white light source 11w to 0, with emphasis on color reproducibility.

The output unit 37 outputs the calculated light control values (light control value _LG , light control value _LR , light control value _LB , and light control value _Lw ) and the video content itself acquired in step S11. The communication unit 32 transmits these to the controller 20 (S18), and the controller 20 stores the received dimming values for a predetermined time and the received video content in a storage unit (not shown) provided in the controller 20. to be memorized.

After that, for example, when an operation to start a lighting effect is performed on the display device 40, the controller 20 takes this as an opportunity to cause the display device 40 to play video content, and also causes the lighting device 10 to play a predetermined video content in synchronization with the playback of the video content. Sequentially outputs the dimming value for each hour. This dimming value is obtained as a result of correcting the pixel value based on Equations 1 to 3 above. Therefore, the emitted light color of the pixel of the video content corresponding to the illumination device 10 and the emitted light color of the illumination device 10 are almost the same color and change in synchronization. Therefore, the lighting system 100 can realize lighting effects that are highly compatible with video content by accurately reproducing the colors of the video content.

[Operation example 2]
The lighting system 100 may use the video shot by the camera 50 as video content, and synchronize the video shot by the camera 50 and the lighting device 10 in real time. FIG. 6 is a flowchart of a second example of operation of such a lighting system 100.

First, the information processing unit 34 associates the lighting device 10 with the pixels of the camera 50 (image sensor) (S21). For example, the operation reception unit 31 receives from the user an operation for associating the 50 shooting ranges of the camera with the lighting device 10, and the information processing unit 34 adjusts the pixels of the lighting device 10 and the camera 50 based on such operation. Correlate with. The specific matching method in step S21 is the same as that in step S12 of the first operation example.

Next, the second acquisition unit 36 obtains video dimming curve information indicating the relationship between pixel values and luminance in the display device 40 and illumination dimming curve information indicating the relationship between the dimming value and luminance in the lighting device 10. Curve information is acquired (S22). If the color temperature indicated by the video dimming curve information and the color temperature indicated by the illumination dimming curve information are different, the output unit 37 performs color temperature adjustment to match the color temperature of the lighting device 10 to the color temperature of the display device 40. (S23). The processing from step S22 to step S23 is similar to the processing from step S13 to step S14 in the first operation example.

After that, when the camera 50 starts capturing a video, the first acquisition unit 35 acquires frames of the video as video content (S24). The output unit 37 extracts the pixel values (pixel value _PG , pixel value _PR , and pixel value _PB ) of the pixel associated with the illumination device 10 from the acquired frame (S25). The output unit 37 calculates the light control values (light control value L _G , light control value L _R , and light control value L _B ) by correcting the extracted pixel values based on Equations 1 to 3 above. (S26). When the lighting device 10 includes the white light source 11w, the output unit 37 selects one of the dimming value L _G , the dimming value L _R , and the dimming value L _B as the dimming value L w for _the white light source 11w. The dimming value with the lowest luminance is adopted (S27). The processing from step S25 to step S27 is similar to the processing from step S15 to step S17 in the first operation example.

The output unit 37 outputs the calculated light control values (light control value _LG , light control value _LR , light control value _LB , and light control value _Lw ) and the frame acquired in step S24. , the communication unit 32 transmits these to the controller 20 (S28). The controller 20 buffers the received dimming value and the received frame in a storage unit (not shown) included in the controller 20, displays the frame on the display device 40, and displays the lighting device 10 in synchronization with the display of the frame. outputs the dimming value.

By repeating the processes from step S24 to step S28, the lighting system 100 causes the display device 40 to play back the video (video content) captured by the camera 50, and changes the light emission mode of the lighting device 10 in synchronization with the video. can be changed.

The dimming value output by the controller 20 is obtained as a result of correcting the pixel value based on Equations 1 to 3 above. Therefore, the emitted light color of the pixel of the video content corresponding to the illumination device 10 and the emitted light color of the illumination device 10 are almost the same color and change in synchronization. Therefore, the lighting system 100 can realize lighting effects that are highly compatible with video content by accurately reproducing the colors of the video content.

Note that the number of frames and the number of times the dimming value for the lighting device 10 is updated do not need to match; for example, when the frame rate is 60 fps, the dimming value is updated every second (that is, 60 frames). may be updated once per month).

Further, the second operation example can also be applied to a case where video content is distributed by streaming from the content distribution server 60 to the information terminal 30.

[Operation example 3]
The lighting system 100 may generate video content based on the sensing results of the sensor 70. For example, when the sensor 70 is an air volume sensor, video content may be generated based on the air volume sensed by the sensor 70, and the generated video content and the lighting device 10 may be synchronized in real time. FIG. 7 is a flowchart of operation example 3 of such a lighting system 100.

First, the information processing unit 34 associates the lighting device 10 with pixels of the test content (S31). For example, the operation receiving unit 31 receives an operation for associating the test content with the lighting device 10 from the user, and the information processing unit 34 associates the lighting device 10 with pixels of the test content based on such an operation. The test content is content that is used instead of the actual video content in order to associate the lighting device 10 with the pixels of the video content. The specific association method in step S31 is the same as step S12 in the first operation example.

Next, the second acquisition unit 36 obtains video dimming curve information indicating the relationship between pixel values and luminance in the display device 40 and illumination dimming curve information indicating the relationship between the dimming value and luminance in the lighting device 10. Curve information is acquired (S32). If the color temperature indicated by the video dimming curve information and the color temperature indicated by the illumination dimming curve information are different, the output unit 37 performs color temperature adjustment to match the color temperature of the lighting device 10 to the color temperature of the display device 40. (S33). The processing from step S32 to step S33 is similar to the processing from step S13 to step S14 of the first operation example.

After that, the content generation unit 38 starts generating video content (frames) based on the sensing results of the sensor 70 (S34). The sensor 70 is, for example, an airflow sensor installed around the building 80 (the installation location of the lighting device 10), and the storage unit 33 includes a visual effect algorithm that visualizes the sensing results (output values) of the airflow sensor. Memorized in advance. The information processing unit 34 generates video content based on the visual effect algorithm stored in the storage unit 33. As the visual effect algorithm, for example, a method similar to a visual effect algorithm for music is used.

The first acquisition unit 35 acquires the generated frame (S35). The output unit 37 assumes that the association in the test content in step S31 is also applied to the frame generated in step S35, and outputs the pixel value of the pixel associated with the lighting device 10 in the acquired frame. (Pixel value _PG , pixel value _PR , and pixel value _PB ) are extracted (S36). The output unit 37 calculates the light control values (light control value L _G , light control value L _R , and light control value L _B ) by correcting the extracted pixel values based on Equations 1 to 3 above. (S37). When the lighting device 10 includes the white light source 11w, the output unit 37 selects one of the dimming value L _G , the dimming value L _R , and the dimming value L _B as the dimming value L w for _the white light source 11w. The dimming value with the lowest luminance is adopted (S38). The processing from step S36 to step S38 is similar to the processing from step S15 to step S17 of the first operation example.

The output unit 37 outputs the calculated light control values (light control value _LG , light control value _LR , light control value _LB , and light control value _Lw ) and the frame generated in step S34. , the communication unit 32 transmits these to the controller 20 (S39). The controller 20 buffers the received dimming value and the received frame in a storage unit (not shown) included in the controller 20, displays the frame on the display device 40, and displays the lighting device 10 in synchronization with the display of the frame. outputs the dimming value.

By repeating the processing from step S34 to step S39, the lighting system 100 causes the display device 40 to play back the video content generated based on the sensing result of the sensor 70, and also turns on the lighting in synchronization with the playback of the video content. The light emitting mode of the device 10 can be changed.

The dimming value output by the controller 20 is obtained as a result of correcting the pixel value based on Equations 1 to 3 above. Therefore, the emitted light color of the pixel of the video content corresponding to the illumination device 10 and the emitted light color of the illumination device 10 are almost the same color and change in synchronization. Therefore, the lighting system 100 can realize lighting effects that are highly compatible with video content by accurately reproducing the colors of the video content.

Note that the number of frames and the number of times the dimming value for the lighting device 10 is updated do not need to match; for example, when the frame rate is 60 fps, the dimming value is updated every second (that is, 60 frames). may be updated once per month).

[Modification 1]
When the dimming value is transmitted to the lighting device 10 in real time as in the above operation examples 2 and 3, the playback speed of the video content may be changed according to the sensing result of the sensor 70. Further, in addition to the playback speed of the video content, the output unit 37 may change the playback speed of the dimming values sequentially output from the lighting device 10.

For example, when the sensor 70 is an airflow sensor, the output unit 37 increases the playback speed of the dimming value by shortening the time interval for outputting the dimming value as the airflow increases. Specifically, the output unit 37 outputs the dimming value at a time interval shorter than the prescribed time interval when the air volume is greater than the upper limit of the predetermined range, and when the air volume is less than the lower limit of the predetermined range. In this case, the time interval for outputting the dimming value is made longer than the specified time interval.

On the contrary, the output unit 37 may increase the playback speed of the light control value by shortening the time interval for outputting the light control value as the air volume increases. Specifically, the output unit 37 makes the time interval for outputting the dimming value longer than the prescribed time interval when the air volume is greater than the upper limit of the predetermined range, and outputs the dimming value when the air volume is less than the lower limit of the predetermined range. First, the time interval for outputting the dimming value is made shorter than the specified time interval.

Such a lighting system 100 can realize lighting effects according to the sensing results of the sensor 70.

Note that changing the playback speed in Modification 1 may be combined with Operation Example 1, in which case the controller 20 acquires the sensing result of the sensor 70 and changes the playback speed of the dimming value.

[Modification 2]
Note that the user can trim the video content, change the hue of the video content, adjust the saturation of the video content, adjust the brightness of the video content, adjust the playback speed of the video content, etc. by manually operating the operation reception unit 31. You can also do this. Further, the user can also select and cancel the selection of the lighting device 10 used for the production by manually operating the operation reception unit 31 or the like.

[Modification 3]
By the way, there are cases where the user assumes the display device 40 that will be used in the lighting system 100 and manually inputs video dimming curve information of the assumed display device 40 into the operation reception unit 31 in advance. Conceivable. Furthermore, even when the moving image dimming curve information of the existing display device 40 is not accurately known, there may be a case where the user manually inputs the moving image dimming curve information to the operation reception unit 31. In such a case, the second acquisition unit 36 may acquire the video dimming curve information manually input by the user.

Similarly, a case where the user assumes the lighting device 10 that will be used in the lighting system 100 and manually inputs video dimming curve information of the assumed lighting device 10 into the operation reception unit 31 in advance. is possible. Further, even when the lighting dimming curve information of the existing lighting device 10 is not accurately known, there may be a case where the user manually inputs the lighting dimming curve information to the operation reception unit 31. In such a case, the second acquisition unit 36 may acquire lighting dimming curve information manually input by the user.

[Effects etc.]
As described above, the lighting system 100 includes the first acquisition unit 35 that acquires video content, video dimming curve information indicating the relationship between pixel values and luminance in the display device 40, and the A second acquisition unit 36 that acquires illumination dimming curve information indicating the relationship between light value and luminance brightness, and a second acquisition unit 36 that acquires illumination dimming curve information indicating the relationship between light value and luminance luminance; It includes an output unit 37 that outputs a value obtained by correcting based on the dimming curve information as a dimming value to the lighting device 10.

Such a lighting system 100 can match the emission color of the lighting device 10 to the emission color of a specific pixel of the display device 40 displaying video content. Therefore, the lighting system 100 can realize lighting effects that are highly compatible with video content by accurately reproducing the colors of the video content.

For example, the lighting device 10 includes a red light source 11r, a green light source 11g, and a blue light source 11b. The output unit 37 outputs a value obtained by correcting the pixel value of a red pixel of the video content based on the acquired video dimming curve information and the acquired illumination dimming curve information to the red light source 11r. output as the first dimming value. The output unit 37 outputs a value obtained by correcting the pixel value of a green pixel of the video content based on the acquired video dimming curve information and the acquired illumination dimming curve information to the green light source 11g. output as the second dimming value. The output unit 37 outputs a value obtained by correcting the pixel value of a blue pixel of the video content based on the acquired video dimming curve information and the acquired illumination dimming curve information to the blue light source 11b. output as the third dimming value.

Such a lighting system 100 can match the emission color of the lighting device 10 to the emission color of a specific pixel of the display device 40 displaying video content.

For example, the lighting device 10 further includes a white light source 11w. The output unit 37 outputs the dimming value with the lowest emission brightness among the first dimming value, the second dimming value, and the third dimming value as the dimming value for the white light source 11w.

Such a lighting system 100 can improve the total luminance of the lighting device 10 while minimizing the influence on color.

Further, for example, a red pixel, a green pixel, and a blue pixel constitute a specific pixel. The output unit 37 outputs the first light control value, the second light control value, and the third light control value to match the light emission color of the lighting device 10 to the light emission color of a specific pixel.

Such a lighting system 100 can match the emission color of the lighting device 10 to the emission color of a specific pixel of the display device 40 displaying video content.

For example, the output unit 37 may change at least one of the maximum value of the first dimming value, the maximum value of the second dimming value, and the maximum value of the third dimming value to less than the specified value. , the color temperature of the white light emitted by the lighting device 10 is matched to the color temperature of the white light emitted by the display device 40.

Such a lighting system 100 can match the color temperature of the white light emitted by the lighting device 10 to the color temperature of the white light emitted by the display device 40.

Further, for example, the first acquisition unit 35 acquires, from the camera 50, a video shot by the camera 50 as video content.

Such a lighting system 100 can match the emission color of the lighting device 10 to the emission color of a specific pixel of the display device 40 displaying the image captured by the camera 50.

Further, for example, the first acquisition unit 35 acquires video content from the content distribution server 60.

Such a lighting system 100 can match the emission color of the lighting device 10 to the emission color of a specific pixel of the display device 40 displaying video content provided from the content distribution server 60.

Furthermore, for example, the lighting system 100 further includes a content generation unit 38 that generates video content based on sensing results by the sensor 70. The first acquisition unit 35 acquires the generated video content.

Such a lighting system 100 can match the emission color of the lighting device 10 to the emission color of a specific pixel of the display device 40 displaying video content generated based on the sensing result by the sensor 70.

Further, for example, the output unit 37 sequentially outputs the dimming values for the lighting device 10 and changes the reproduction speed of the sequentially outputting dimming values of the lighting device 10 based on the sensing result by the sensor 70.

Such a lighting system 100 can realize lighting effects according to the sensing results of the sensor 70.

Further, for example, the sensor 70 is an airflow sensor.

Such a lighting system 100 can realize lighting effects according to the sensing results of the airflow sensor.

Further, for example, the second acquisition unit 36 acquires video dimming curve information manually input by the user.

Such a lighting system 100 can obtain moving image dimming curve information manually input by a user.

Further, for example, the second acquisition unit 36 acquires lighting dimming curve information manually input by the user.

Such a lighting system 100 can obtain lighting dimming curve information manually input by a user.

In addition, the lighting method executed by a computer such as the lighting system 100 includes a first acquisition step (S11, S24, S35) of acquiring video content, and a video adjustment that shows the relationship between pixel values and luminance of light emitted by the display device 40. A second acquisition step (S13, S22, S32) of acquiring light curve information and illumination dimming curve information indicating the relationship between the dimming value and the light emission brightness in the lighting device 10, and the pixel value of the acquired video content. output step (S18, S28, S39).

Such a lighting method can match the emitted light color of the illumination device 10 to the emitted light color of a specific pixel of the display device 40 displaying video content. Therefore, by accurately reproducing the colors of the video content, the lighting method can realize a lighting effect that is highly compatible with the video content.

(Other embodiments)
Although the embodiments have been described above, the present invention is not limited to the above embodiments.

For example, in the above embodiments, the lighting system is realized by a plurality of devices, but it may be realized as a single device. For example, the lighting system may be realized as a single device corresponding to an information terminal. When the lighting system is realized by a plurality of devices, the components included in the lighting system described in the above embodiments may be distributed to the plurality of devices in any manner.

Further, in the above embodiments, the processing executed by a specific processing unit may be executed by another processing unit. Further, the order of the plurality of processes may be changed, or the plurality of processes may be executed in parallel. For example, part or all of the processing described as being executed by the information terminal in the above embodiments may be executed by the controller.

Furthermore, in the embodiments described above, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

Moreover, each component may be realized by hardware. Each component may be a circuit (or integrated circuit). These circuits may constitute one circuit as a whole, or may be separate circuits. Further, each of these circuits may be a general-purpose circuit or a dedicated circuit.

Further, general or specific aspects of the present invention may be implemented in a system, apparatus, method, integrated circuit, computer program, or computer readable storage medium such as a CD-ROM. Further, the present invention may be realized by any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

For example, the present invention may be implemented as a lighting method executed by a computer, such as the lighting system of the embodiments described above. Further, the present invention may be realized as a program for causing a computer to execute such a lighting method, or may be realized as a computer-readable non-temporary recording medium on which such a program is recorded. good.

Other embodiments may be obtained by making various modifications to each embodiment that a person skilled in the art would think of, or may be realized by arbitrarily combining the components and functions of each embodiment without departing from the spirit of the present invention. The present invention also includes such forms.

10 lighting device 11b blue light source 11g green light source 11r red light source 11w white light source 35 first acquisition unit 36 second acquisition unit 37 output unit 38 content generation unit 40 display device 50 camera 60 content distribution server 70 sensor 100 lighting system

Claims (14)

a first acquisition unit that acquires video content;
a second acquisition unit that acquires moving image dimming curve information indicating a relationship between a pixel value and light emission brightness in a display device, and lighting dimming curve information indicating a relationship between a dimming value and light emission brightness in a lighting device;
A value obtained by correcting a pixel value of the acquired video content based on the acquired video dimming curve information and the acquired illumination dimming curve information is used as a dimming value for the lighting device. A lighting system comprising: an output section that outputs a value. The lighting device includes a red light source, a green light source, and a blue light source,
The output section is
The value obtained by correcting the pixel value of the red pixel of the video content based on the acquired video dimming curve information and the acquired illumination dimming curve information is calculated as Output as one dimming value,
The value obtained by correcting the pixel value of the green pixel of the video content based on the acquired video dimming curve information and the acquired illumination dimming curve information is calculated as Output as two dimming values,
The value obtained by correcting the pixel value of the blue pixel of the video content based on the acquired video dimming curve information and the acquired illumination dimming curve information is calculated as The lighting system according to claim 1, wherein the lighting system outputs three dimming values. The lighting device further includes a white light source,
The output unit outputs a dimming value having the lowest light emission brightness among the first dimming value, the second dimming value, and the third dimming value as a dimming value for the white light source. 2. The lighting system according to 2. The red pixel, the green pixel, and the blue pixel constitute a specific pixel,
The output unit outputs the first dimming value, the second dimming value, and the third dimming value to match the luminescent color of the lighting device to the luminescent color of the specific pixel. The lighting system according to item 2 or 3. The output unit changes at least one of the maximum value of the first dimming value, the maximum value of the second dimming value, and the maximum value of the third dimming value to less than a specified value, The lighting system according to claim 2, wherein the color temperature of white light emitted by the lighting device is matched to the color temperature of white light emitted by the display device. The lighting system according to any one of claims 1 to 5, wherein the first acquisition unit acquires, from a camera, an image shot by the camera as the video content. The lighting system according to claim 1, wherein the first acquisition unit acquires the video content from a content distribution server. Furthermore, it includes a content generation unit that generates the video content based on the sensing result by the sensor,
The lighting system according to any one of claims 1 to 5, wherein the first acquisition unit acquires the generated video content. The output section is
sequentially outputting dimming values for the lighting device;
The lighting system according to any one of claims 1 to 8, wherein a reproduction speed of sequentially output dimming values of the lighting device is changed based on a sensing result by a sensor. The lighting system according to claim 8 or 9, wherein the sensor is an air volume sensor. The lighting system according to any one of claims 1 to 10, wherein the second acquisition unit acquires the video dimming curve information manually input by a user. The lighting system according to any one of claims 1 to 11, wherein the second acquisition unit acquires the lighting dimming curve information manually input by a user. a first acquisition step of acquiring video content;
a second acquisition step of acquiring video dimming curve information indicating the relationship between the pixel value and the emission brightness in the display device, and illumination dimming curve information indicating the relationship between the dimming value and the emission brightness in the lighting device;
A value obtained by correcting a pixel value of the acquired video content based on the acquired video dimming curve information and the acquired illumination dimming curve information is used as a dimming value for the lighting device. and an output step that outputs as a value. A program for causing a computer to execute the lighting method according to claim 13.

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