Illumination color adjustment system

Abstract

To perform color adjustment balanced in the whole color arrangement inside a vehicle.SOLUTION: An illumination color adjustment system according to the present disclosure is an illumination color adjustment system that adjusts color for illuminating the inside of a vehicle, and includes a detection unit, a light emitting unit, and a control unit. The detection unit detects a color arrangement inside the vehicle. The light emitting unit is capable of color adjustment and emits light toward the inside of the vehicle. The control unit performs color adjustment of the light emitting unit according to the color arrangement inside the vehicle detected by the detection unit.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a lighting color adjustment system. [Background technology]

[0002] A vehicle control device has been disclosed that determines clothing information of occupants in the vehicle and adjusts vehicle equipment such as reclining or mirror angle or seat position based on the clothing of each occupant (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-053705 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventionally, the color of the lighting inside a vehicle has not been adjusted in accordance with the color scheme of the interior of the vehicle and the clothing of the occupants.

[0005] An object of the present disclosure, made in consideration of the above circumstances, is to provide an illumination color adjustment system that can perform balanced color adjustment across the entire color scheme inside a vehicle. [Means for solving the problem]

[0006] An illumination color adjustment system according to one embodiment of the present disclosure is an illumination color adjustment system that adjusts the color of illumination inside a vehicle, and includes a detection unit that detects the color scheme of the interior of the vehicle, a light-emitting unit that is capable of adjusting the color of light emitted toward the interior of the vehicle, and a control unit that adjusts the color of the light-emitting unit in accordance with the color scheme of the interior of the vehicle detected by the detection unit. Effect of the Invention

[0007] According to the present disclosure, it is possible to perform color adjustments that are well-balanced across the entire color scheme inside the vehicle. [Brief description of the drawings]

[0008] [Figure 1] 1 is a block diagram showing a schematic configuration of an illumination color adjustment system according to an embodiment of the present disclosure. [Diagram 2] 1 is a cross-sectional view showing a schematic example of an arrangement of components of an illumination color adjustment system inside a vehicle; [Diagram 3] 2 is a flowchart of a process executed by a control unit in FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] In this disclosure, "color" includes all three attributes: hue, brightness, and saturation. Therefore, "color" does not mean only hue, or in other words, color tone. "Color tone" refers to the difference in appearance due to brightness and saturation. Also, "color scheme" refers to the combination of colors and the appearance of the combined colors.

[0010] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. Note that the drawings used in the following description are schematic. The dimensions and ratios in the drawings do not necessarily correspond to the actual ones.

[0011] (Configuration of lighting color adjustment system) FIG. 1 shows a schematic configuration of an illumination color adjustment system 10 according to an embodiment of the present disclosure. As shown in FIG. 2, the illumination color adjustment system 10 is mounted on a vehicle 50 and adjusts the color of illumination inside the vehicle 50. The vehicle 50 includes passenger cars and buses. The passenger cars and buses include shared vehicles in which a plurality of unspecified passengers ride. For example, the vehicle 50 shown in FIG. 2 is assumed to be an autonomous vehicle in which an unspecified passenger rides. The autonomous driving is assumed to be, for example, level 4 or 5 autonomous driving defined by SAE (Society of Automotive Engineers). The vehicle 50 is not limited to this, and may be a vehicle that is completely manually driven, or an autonomous vehicle of levels 1 to 3. FIG. 2 shows the inside of a vehicle 50 moving to the right in the figure. In FIG. 2, seats and other facilities in the vehicle cabin are omitted.

[0012] As shown in FIG. 1, the illumination color adjustment system 10 includes a camera 21 and / or a color sensor 22 which are a detection unit 20, an illumination color adjustment device 30, and an illumination device 41 and / or a display 42 which are a light-emitting unit 40.

[0013] The camera 21 is an imaging device capable of capturing color images, and includes an optical system, an imaging element, and a color filter. The optical system includes one or more lenses whose optical axis O faces the inside of the vehicle 50. The imaging element is, for example, a charge-coupled device image sensor (CCD image sensor) or a complementary MOS image sensor (CMOS image sensor). The imaging element is an element that converts an image formed on a light receiving surface by the optical system into an electric signal. The imaging element includes a plurality of photoelectric conversion elements. The photoelectric conversion elements correspond to each pixel of the image output by the imaging element. The plurality of photoelectric conversion elements are arranged, for example, in a lattice pattern. The color filter is, for example, made up of filters of three colors, red (R), green (G), and blue (B). A color filter of any one of the colors RGB may be arranged in front of each photoelectric conversion element. The color filters may be arranged, for example, in a Bayer array. The camera 21 outputs the captured image as a digital image signal. 2, the camera 21 may be disposed in a position that overlooks the interior of the vehicle 50. The camera 21 may be disposed, for example, near the rearview mirror of the vehicle 50 or on the ceiling. A plurality of cameras 21 may be disposed inside the vehicle 50.

[0014] The color sensor 22 includes three color filters of RGB and a photodiode. The color sensor 22 receives ambient light with a photodiode for each RGB component. The color sensor 22 determines the color of the detection target based on the output of the photodiode corresponding to each color. Although not shown in FIG. 2, a large number of color sensors 22 may be disposed in a distributed manner on the side surface or the like inside the vehicle 50.

[0015] The camera 21 and the color sensor 22 are devices that detect the color scheme inside the vehicle 50. The camera 21 and the color sensor 22 can detect the distribution of a plurality of colors inside the vehicle 50. The camera 21 and the color sensor 22 can detect the color distribution of the clothes and belongings of the occupants inside the vehicle 50 and the interior of the vehicle 50. The detection unit 20 is not limited to the camera 21 and the color sensor 22 as long as it can detect the color scheme inside the vehicle 50.

[0016] The illumination color adjustment device 30 is an electronic device including an input unit 31, a control unit 32, and an output unit 33. The illumination color adjustment device 30 may be disposed at any location in the vehicle 50. In the case of a passenger car, the illumination color adjustment device 30 may be disposed at various locations including inside the dashboard and in the luggage room.

[0017] The input unit 31 includes a communication interface for communicating with the camera 21 and / or the color sensor 22. The input unit 31 receives an input of a detected signal from the camera 21 and / or the color sensor 22.

[0018] The control unit 32 is configured to include a single or multiple processors and memories. The processors include general-purpose processors that execute programmed functions by loading specific programs, and dedicated processors specialized for specific processing. The dedicated processors include DSPs (Digital Signal Processors), ASICs (Application Specific Integrated Circuits), and FPGAs (Field-Programmable Gate Arrays). The memory can store programs executed by the processors, information during calculations by the processors, and the like. The memory and the processors are connected by bus lines such as a data bus and a control bus. The memory can include ROMs (read only memory), RAMs (Random Access Memory), flash memories, and the like. The RAMs can include DRAMs (Dynamic Random Access Memory) and SRAMs (Static Random Access Memory).

[0019] The control unit 32 executes the processing of the illumination color adjustment device 30 according to the program stored in the memory. The control unit 32 acquires information on the color scheme inside the vehicle 50 from the camera 21 and / or the color sensor 22, and determines the color setting of the light-emitting unit 40 inside the vehicle 50. The control unit 32 adjusts the color of the lighting device 41 and / or the display 42, which are the light-emitting unit 40, based on the determined color setting. The processing executed by the control unit 32 will be described in detail later.

[0020] The output unit 33 includes a communication interface for communicating with the lighting device 41 and / or the display 42. The output unit 33 can transmit signals for setting and adjusting colors to the lighting device 41 and / or the display 42.

[0021] The lighting device 41 is an internal light for the vehicle 50. The lighting device 41 may be disposed on the ceiling of the vehicle 50, as illustrated in FIG. 2. The lighting device 41 is capable of adjusting the color. For example, the lighting device 41 includes three-color LEDs (Light Emitting Diodes) of RGB, and can generate light of any color by controlling the amount of light of each color. The lighting device 41 is configured to change the color of the lighting according to a signal from the lighting color adjustment device 30.

[0022] The display 42 is an information display device that is provided inside the vehicle 50 and is capable of displaying in color. The display 42 includes various displays, such as a liquid crystal display (LCD), an organic electroluminescence (EL) display, an inorganic electroluminescence (EL) display, and a plasma display panel (PDP). For example, in the case where the vehicle 50 is a passenger vehicle, the display 42 may be disposed on the ceiling or the like where it is easily visible to the passengers as shown in FIG. 2. The display 42 is used for providing information to the passengers in the vehicle 50, displaying television broadcasts, and entertainment purposes in the vehicle 50 such as karaoke. The display 42 also includes a display of a navigation system in the case of a passenger car. The display 42 is configured so that the overall color of the image displayed can be adjusted according to a signal from the illumination color adjustment device 30. That is, the display 42 can adjust the overall color to a bluish color, a reddish color, or the like.

[0023] The light-emitting unit 40 is not limited to the lighting device 41 and the display 42, as long as the light-emitting unit 40 is a device capable of adjusting the color of light emitted toward the inside of the vehicle 50.

[0024] (Lighting color adjustment processing) The process executed by the control unit 32 will be described with reference to FIG.

[0025] The control unit 32 acquires, via the input unit 31, the color image of the camera 21 and / or information from the multiple color sensors 22 as information indicating the color scheme inside the vehicle 50 (S1). When acquiring the information indicating the color scheme inside the vehicle 50, it is preferable that the lighting device 41 illuminates the inside of the vehicle 50 with white light. In addition, it is preferable that the entire screen of the display 42 is an achromatic color such as black or white.

[0026] The control unit 32 recognizes the color scheme of each color inside the vehicle 50 based on the information indicating the color scheme inside the vehicle 50 acquired in S1 (S2). For example, the control unit 32 recognizes the ratio of each color tone, such as reddish colors, bluish colors, and white colors, in the field of view. Furthermore, for example, the control unit 32 can recognize the ratio of light and dark colors in addition to differences in color tone. If the illumination light of the lighting device 41 when the color scheme inside the vehicle 50 was acquired in S1 was not white light, the control unit 32 may correct the acquired color scheme information according to the color of the illumination light.

[0027] For example, in a public vehicle that takes passengers to a stadium to watch sports, if there are many passengers wearing the uniform of a particular sports team, the control unit 32 can recognize that the distribution ratio of the color of that uniform is high. Also, for example, when there are many passengers wearing clothes of a particular color due to fashion or season, the control unit 32 can recognize that the distribution ratio of that color is high. In particular, in the case of a bus or the like that allows passengers to stand, the color scheme of the passengers' clothes may become the dominant color scheme inside the vehicle 50.

[0028] The control unit 32 judges whether or not the color scheme inside the vehicle 50 recognized in S2 is uniform (S3). For example, when colors of the same family are distributed at a high ratio throughout the interior of the vehicle 50, it can be said that the color scheme inside the vehicle 50 is uniform. For example, when the ratio of warm colors such as red and orange is high, or when the ratio of cool colors such as blue and blue-green is high, it can be said that the color scheme inside the vehicle 50 is uniform. In addition, the distribution of colors with high brightness or colors with low brightness throughout the interior of the vehicle 50 is a factor in judging that the color scheme inside the vehicle 50 is uniform. On the other hand, the mixture of hues that are located apart from each other (for example, 90 degrees apart or more) when expressed on a color wheel such as red, blue, and green is a factor in judging that the color scheme inside the vehicle 50 is not uniform. A color wheel is known as a circular arrangement of hues. Color wheels include the Marcel color wheel, the Ostwald color wheel, and the PCCS (Practical Color Coordinate System) color wheel.

[0029] When the control unit 32 determines in S3 that there is uniformity in the colors (S3: Yes), it determines the color setting of the light-emitting unit 40 based on the color of the interior of the vehicle 50 (S4). The control unit 32 may determine the color setting of the light-emitting unit 40 so that the color is balanced throughout the entire interior of the vehicle 50.

[0030] The control unit 32 may set a color that is consistent with the color of the interior of the vehicle 50. For example, the control unit 32 may determine a color setting that includes a color tone similar to the color of the interior of the vehicle 50. For example, if the vehicle 50 is a shuttle bus heading to a sports game and there are many occupants inside the vehicle 50 wearing red uniforms of a sports team, the control unit 32 may set the color of the interior of the vehicle 50 to a reddish color. This makes the color tone of the interior of the vehicle 50 closer to the color of the uniform of the team that the occupants support, thereby lifting the spirits of the occupants heading to the sports game.

[0031] The control unit 32 can automatically change the color settings of the light emitting unit 40 inside the vehicle 50 to match the base color of the uniforms worn by the occupants for cheering. In other words, even if the type of sport or team being played at the stadium changes and the color of the uniform changes, there is no need for a human to change the settings of the light emitting unit 40.

[0032] In addition, for example, in autumn or winter, when many passengers are wearing warm-colored clothing, the control unit 32 can automatically switch the color of the light-emitting unit 40 to a warm color such as orange, thereby creating a warm atmosphere inside the vehicle 50.

[0033] Furthermore, for example, when many of the passengers inside the vehicle 50 are wearing clothes based on achromatic black, gray, and white, the control unit 32 can automatically set the color of the illumination of the lighting device 41 to achromatic white light or a color close to it, and can avoid setting a specific color on the display 42. For example, this corresponds to a case where many of the passengers are wearing work suits or school uniforms. White light is suitable for passengers commuting to work or school because it is visually balanced with these clothes and also has the effect of making it easier to read letters in books and improving concentration.

[0034] Conversely, the control unit 32 may set the color of the light-emitting unit 40 to a complementary or opposite color of the color that is dominant inside the vehicle 50. For example, when the color inside the vehicle 50 is predominantly red, the color of the light-emitting unit 40 may be set to a cyan or blue-green color. In this way, the balance of the color scheme inside the vehicle 50 can be changed so that red is relatively weakened inside the vehicle 50 and the complementary or opposite color is visually emphasized.

[0035] When the control unit 32 determines in S3 that there is no uniformity in the colors (S3: No), it sets the color of the light-emitting unit 40 to an achromatic color such as white or a color close to it (S5). For example, the control unit 32 causes the lighting device 41 to emit white light that is not biased toward a specific color. Also, for example, the control unit 32 does not adjust the color of the display 42 to a specific color.

[0036] For example, if the passengers inside the vehicle 50 are wearing clothes of various colors, or if the color scheme inside the vehicle 50, including the color of the interior of the vehicle 50, is not uniform, setting the light-emitting unit 40 to a specific color may cause a mismatch with any of the clothing or interior. Alternatively, only some colors may be emphasized unnaturally to the passenger's visual sense. In such a case, the control unit 32 sets the color so that the lighting inside the vehicle 50 is not biased toward a specific hue.

[0037] After S4 or S5, the control unit 32 adjusts the lighting device 41 and / or the display 42 to the color determined in S4 or S5 (S6). As a result, the color of the lighting device 41 and / or the display 42 is actually adjusted.

[0038] As described above, according to this embodiment, it is possible to perform color adjustment that is well-balanced across the entire color scheme inside the vehicle.

[0039] In the above description, the color scheme inside the vehicle 50 has been described with a focus on the color of the passengers' clothing. However, the color scheme inside the vehicle 50 also takes into consideration the color scheme of the interior of the vehicle 50. For example, in a bus or the like equipped with seats that can accommodate all passengers inside the vehicle 50, the color of the passengers' clothing may be hidden by the seats, and the color of the interior of the vehicle 50 itself may become dominant as the color inside the vehicle 50. In such a case, the illumination color adjustment system 10 can set colors for the illumination device 41 and the display 42 that are balanced with the color scheme of the interior of the vehicle 50. In this way, in a vehicle 50 equipped with the illumination color adjustment system 10, the illumination color is automatically adjusted according to the interior.

[0040] The present invention is not limited to the above-described embodiment, and many variations or modifications are possible. For example, the functions included in each means, step, etc. can be rearranged so as not to cause logical inconsistencies, and multiple means or steps can be combined into one or divided.

[0041] For example, the function of the illumination color adjustment device of the above embodiment may be incorporated into a navigation system installed in a general vehicle. The navigation system can detect the color of the clothes of the passengers in the vehicle seats from the images captured by the in-vehicle camera and match the background color of the screen displayed on the display to the color of the passengers' clothes. In this case, the system may be provided as one element of entertainment for the passengers. [Explanation of symbols]

[0042] 10. Lighting color adjustment system 20 Detection unit 21 Camera 22 Color Sensor 30 Lighting color adjustment device 31 Input section 32 Control section 33 Output section 40 Light emitting part 41 Lighting Equipment 42 Display 50 vehicles

Claims

[Claim 1] A lighting color adjustment system for adjusting a color for illuminating an interior of a vehicle, comprising: A detection unit for detecting a color scheme inside the vehicle; a light-emitting unit capable of adjusting color and emitting light toward the inside of the vehicle; a control unit that adjusts the color of the light emitting unit in accordance with the color scheme inside the vehicle detected by the detection unit; A lighting color adjustment system comprising:

Images