CN203104900U - Lighting control equipment and lighting systems - Google Patents

Abstract

The utility model discloses a lighting control device and a lighting system. Wherein, the lighting control device includes: an imaging device, an image processor and a controller, wherein the imaging device is used to obtain an initial image formed by the initial light irradiating the target object; the image processor includes a first sub-image processor and a first Processor; the first processor is connected to the first sub-image processor, and is used to calculate the color coordinates according to the initial image and the target image to obtain the fourth color coordinates; the controller includes: a second processor and a first communication interface , wherein, the second processor is connected with the first processor, and is used to calculate the driving current according to the fourth color coordinates and the intrinsic color coordinates, so as to obtain the driving current parameters; the first communication interface is connected with the second processor, and uses To output the driving current parameter to the lighting device. By adopting the utility model, the effect of completing the control of the lighting equipment in the same control equipment is realized.

Description

Lighting control equipment and lighting systems

technical field

The utility model relates to the field of lighting equipment, in particular to a lighting control equipment and a lighting system.

Background technique

The prior art lighting control for photographic lamps is either based only on cameras, or only on smart handheld devices or other remote control devices.

There is a control device in the prior art, which uses a calculator to average the gray levels of all pixels in the photo, and then uses this average value as a measurement signal for illuminance feedback control; take the three channels of R, G, and B of the camera image, extract the gray level of the image of each channel separately, and use the extracted gray level for color control. The above-mentioned parameters for illumination control and color control can use multiple cameras to identify whether there are people in the room, collect indoor background light or natural light, and the above-mentioned controllers for illumination control and color control all use neural networks. Information can be extracted from photos taken by the camera to calculate parameters for illumination control and color control.

There is also a lighting controller in the prior art. The lighting controller uses a user interface to select lighting programs. The controller communicates with the lighting system in a wired or wireless manner, but the controller must obtain the target through the camera. The image of the object.

The above two controllers use the imaging device, processor and communication equipment to control the lighting system respectively, and isolate the digital imaging device, processor and communication equipment. When users use the lighting control, they need Carrying the above-mentioned digital imaging device, processor and communication equipment at the same time and making the three devices work together will be very troublesome, and the digital imaging device, processor and communication equipment are all expensive and costly.

Aiming at the problems in the prior art that the camera, the processor and the communication equipment work together to control the light of the lighting equipment, the cost is high and it is inconvenient to carry, no effective solution has been proposed yet.

Utility model content

Aiming at the problem of high cost and inconvenient portability in the related technology of dimming and controlling lighting equipment through the cooperation of cameras, processors and communication equipment, no effective solution has been proposed so far. Therefore, the main purpose of this utility model is to A lighting control device and a lighting system are provided to solve the above problems.

In order to achieve the above object, according to one aspect of the present invention, a lighting control device is provided, the lighting control device includes: an imaging device, an image processor, and a controller, wherein the imaging device is used to obtain the initial light irradiation target object The formed initial image; an image processor, including a first sub-image processor and a first processor, wherein the first sub-image processor is connected to the imaging device, and is used to perform color processing according to the initial image to obtain a target image; The first processor, connected to the first sub-image processor, is used to calculate the color coordinates according to the initial image and the target image to obtain the fourth color coordinates; the controller includes: a second processor and a first communication interface, wherein, The second processor, connected to the first processor, is used to calculate the driving current according to the fourth color coordinate and the intrinsic color coordinate to obtain the driving current parameter, wherein the intrinsic color coordinate is the attribute parameter of the lighting device; the first communication interface , connected to the second processor, for outputting the driving current parameter to the lighting device.

Further, the lighting control device further includes a third processor, the first processor is connected to the first sub-image processor through the third processor, wherein the third processor includes: a first extracting device, a first reading device and The first sending device, the first extracting device, are connected with the first sub-image processor, and are used to respectively extract the first color coordinates of the characteristic color of the original image and the second color coordinates of the characteristic color of the target image; the first reading device , used to read the pre-stored third color coordinates of the color of the initial light; the first sending device is connected to the first extracting device, the first reading device and the first processor respectively, and is used to convert the first color coordinates, the second The dichromatic coordinates and the tertiary color coordinates are sent to the first processor.

Further, the first processor includes: a first calculator, connected to the first sending device, for performing light source estimation calculation on the first color coordinate, the second color coordinate and the third color coordinate, so as to obtain the fourth color coordinate.

Further, the second processor includes: a second extracting device, used to extract the inherent color coordinates of the pre-stored lighting equipment; a second calculator, connected to the second extracting device, used to perform calculation according to the fourth color coordinates and the inherent color coordinates. Calculating the luminous flux to obtain the first luminous flux of the lighting device; the third calculator is connected to the second calculator and is used to perform linear calculation according to the first luminous flux and the first scaling factor to obtain the driving current parameter, wherein the first scaling The factor is the ratio between the driving current of the lighting device and the luminous flux of the lighting device.

Further, the first sub-image processor includes: a second sub-image processor, connected to the imaging device, for performing white balance processing on the initial image, so as to obtain an initial image after white balance processing; a third sub-image processor, It is connected with the second sub-image processor, and is used for performing color enhancement processing on the initial image after white balance processing, so as to obtain the target image.

Further, the first sub-image processor includes: a fourth sub-image processor connected to the imaging device and configured to perform color conversion processing on the initial image to obtain the target image.

In order to achieve the above object, according to one aspect of the present invention, a lighting system is provided, the lighting system includes: a lighting device and a lighting control device, wherein the lighting device is connected to the lighting control device, and the lighting device is used to output the initial light and target light.

Further, the lighting device includes one or more LED lamps, and each lamp includes: a second communication interface, a microcontroller, a driver, and an LED chipset, wherein the second communication interface is connected to the first communication interface of the lighting control device , for receiving the driving current parameter output by the first communication interface; a microcontroller, connected with the second communication interface, for converting the driving current parameter into a dimming signal; a driver, connected with the microcontroller, for using the dimming The signal drives the LED chipset; the LED chipset is connected with the driver, and is used to output the target light through the control of the dimming signal.

Further, the LED chipset includes one or more LED chips, and each LED chip includes a third communication interface, and the third communication interface is used for receiving dimming signals.

Further, the first communication interface and the second communication interface are wireless communication interfaces.

With the utility model, by arranging the imaging device, the image processor and the controller in the same lighting control device, the imaging device in the lighting control device is used to obtain the initial image, and the image processor is used to obtain the target image and the second image according to the initial image. After the four color coordinates, the controller obtains the driving current parameters according to the fourth color coordinates and the intrinsic color coordinates, and outputs the driving current parameters to the lighting equipment, so as to adjust the output light of the lighting equipment. Through the lighting control device of the present utility model, image acquisition, image processing and acquisition of driving current parameters can be realized, and the obtained driving current parameters can be used to adjust the lighting The equipment works together to adjust the light to control the lighting equipment, the problem of high cost and inconvenient to carry realizes the effect of completing the control of the lighting equipment in the same control equipment.

Description of drawings

The drawings described here are used to provide a further understanding of the utility model and constitute a part of the application. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is a schematic diagram of a lighting control device according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of a lighting system according to an embodiment of the present invention;

3 is a schematic diagram of a lighting system according to an embodiment of the present invention;

4 is a schematic diagram of a first calculator according to an embodiment of the present invention; and

Fig. 5 is a schematic structural diagram of an apparatus for controlling output light of a lighting device according to an embodiment of the present invention.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Fig. 1 is a schematic diagram of a lighting control device according to an embodiment of the present invention. As shown in Figure 1 , the lighting control device includes: an imaging device 1, an image processor 3 and a controller 5, wherein the imaging device 1 is used to obtain an initial image formed by initial lighting on a target object; an image processor 3 includes The first sub-image processor 301 and the first processor 303, wherein the first sub-image processor 301 is connected to the imaging device 1, and is used to perform color processing according to the initial image to obtain the target image; the first processor 303, Connected with the first sub-image processor 301, for calculating the color coordinates according to the initial image and the target image, to obtain the fourth color coordinates; the controller 5 includes: a second processor 501 and a first communication interface 503, wherein the first The second processor 501 is connected to the first processor 301, and is used to calculate the driving current according to the fourth color coordinate and the intrinsic color coordinate to obtain the driving current parameter, wherein the intrinsic color coordinate is the attribute parameter of the lighting device; the first communication interface 503 , connected to the second processor 501 and configured to output the driving current parameter to the lighting device 100 .

With the utility model, by setting or integrating the imaging device, the image processor and the controller in the same lighting control device, the imaging device in the lighting control device is used to obtain the initial image, and the target image is obtained by the image processor according to the initial image. After the fourth color coordinate and the fourth color coordinate, the controller obtains the driving current parameter according to the fourth color coordinate and the intrinsic color coordinate, and outputs the driving current parameter to the lighting device, so as to adjust the output light of the lighting device. Through the lighting control device of the present utility model, image acquisition, image processing, and acquisition of driving current parameters can be realized, and the output light of the lighting equipment can be adjusted by using the obtained driving current parameters, which solves the problems in the prior art through cameras, processing The controller and the communication equipment work together to control the light of the lighting equipment, which is costly and inconvenient to carry, and achieves the effect of completing the control of the lighting equipment in the same control equipment.

In addition, through the lighting control device of the present invention, after obtaining the initial image of the target object irradiated by the initial light, image processing is performed on the initial image to obtain the target image, and then the required lighting light is extracted from the target image by the method of light source estimation. The color coordinates of the color, that is, the color coordinates of the target light, and then use the color coordinates to calculate the driving current of the target light, and use the calculated driving current parameters as the dimming drive signal, and use the dimming drive signal to convert the output light of the lighting device It is adjusted to the target light, so that the target light is irradiated on the target object to form a target image, and it solves the problem that only the color of the illuminated object in the photo captured by the imaging device is used as the color of the light when dimming the lighting equipment. The output light of the lighting equipment is controlled, and it is impossible to accurately control the target light and quantitatively enhance the color of the illuminated object. The use of light color to control the output of the lighting equipment is realized, and the target light is accurately controlled, thereby quantitatively enhancing the color of the illuminated object.

Wherein, the lighting control device can be set on a smart handheld device, such as a smart phone, and the imaging device 1 can use a camera on the smart phone.

According to the above embodiments of the present utility model, the lighting control device may further include a third processor, and the first processor 303 is connected to the first sub-image processor 301 through the third processor, wherein the third processor may include: An extracting device, a first reading device and a first sending device, the first extracting device is connected with the first sub-image processor 301, and is used to respectively extract the first color coordinates of the characteristic color of the initial image and the characteristic color of the target image The second color coordinate of the second color coordinate; the first reading device is used to read the third color coordinate of the pre-stored initial light color; the first sending device is connected with the first extracting device, the first reading device and the first processor respectively 303 connection, for sending the first color coordinate, the second color coordinate and the third color coordinate to the first processor.

In the above embodiments of the present utility model, the first processor 303 may include: a first calculator, connected to the first sending device, for estimating the light source on the first color coordinate, the second color coordinate and the third color coordinate Calculated to obtain the quaternary color coordinates.

Specifically, the first calculator may include a multiplier 310 and a first sub-calculator 330, the first sub-calculator 330 calculates the reciprocal of the first color coordinate, and then the multiplier 310 converts the reciprocal of the first color coordinate, the second color coordinate And the third color coordinates are multiplied, and the product number obtained by the multiplication is used as the fourth color coordinates.

In the above embodiment, the fourth color coordinate is extracted from the target image, and used as the color coordinate of the target light, and the driving current parameter of the target object is calculated accordingly, so as to adjust the output light of the lamp in the lighting device to the target light , so that the characteristic color of the image of the target object actually captured under the illumination of the target light is consistent with the characteristic color of the target image obtained by image processing the initial image.

The above-mentioned color coordinates are the characteristics of the three channels of the LED, which can be found out from the technical data of the LED or measured with an integrating sphere.

In the above-mentioned embodiments of the present utility model, the second processor 501 includes: a second extracting device, used to extract the inherent color coordinates of the pre-stored lighting equipment; a second calculator, connected to the second extracting device, used to Calculate the luminous flux of the four-color coordinates and the intrinsic color coordinates to obtain the first luminous flux of the lighting device; the third calculator is connected to the second calculator and is used to perform linear calculations according to the first luminous flux and the first scaling factor to obtain the driving The current parameter, wherein the first scaling factor is the ratio between the driving current of the lighting device and the luminous flux of the lighting device. Wherein, the intrinsic color coordinates are xy coordinates, and the intrinsic color coordinates are constants, which can be read from the technical data of the lamps and lanterns of the lighting equipment, and can also be obtained by measuring with an integrating sphere.

According to the above-mentioned embodiment of the present invention, the first sub-image processor includes: a second sub-image processor, connected to the imaging device, for performing white balance processing on the initial image, so as to obtain an initial image after white balance processing; The third sub-image processor, connected with the second sub-image processor, is used to perform color enhancement processing on the initial image after white balance processing, so as to obtain the target image.

In the above embodiments of the present invention, the first sub-image processor includes: a fourth sub-image processor, connected to the imaging device, for performing color conversion processing on the initial image to obtain the target image.

Fig. 2 is a schematic diagram of a lighting system according to an embodiment of the present invention. Fig. 3 is a schematic diagram of a lighting system according to an embodiment of the present invention.

As shown in FIG. 2 and FIG. 3 , the lighting system includes: a lighting device 100 and a lighting control device 300 , wherein the lighting device 100 is connected to the lighting control device 300 , and the lighting device 100 is used to output initial light and target light.

With the utility model, by arranging the imaging device, the image processor and the controller in the same lighting control device, the imaging device in the lighting control device is used to obtain the initial image, and the image processor is used to obtain the target image and the second image according to the initial image. After the four color coordinates, the controller obtains the driving current parameters according to the fourth color coordinates and the intrinsic color coordinates, and outputs the driving current parameters to the lighting equipment, so as to adjust the output light of the lighting equipment. Through the lighting control device of the present utility model, image acquisition, image processing and acquisition of driving current parameters can be realized, and the obtained driving current parameters can be used to adjust the lighting The equipment works together to adjust the light to control the lighting equipment, which is costly and inconvenient to carry, and realizes the control of the lighting equipment in the same control equipment.

In addition, through the lighting system of the present invention, after the initial image of the target object irradiated by the initial light is obtained by the imaging device 1, image processing is performed on the initial image to obtain the target image, and then the fourth light is extracted from the target image by the method of light source estimation. color coordinates (that is, the color coordinates of the color of the required lighting light), and then the controller 5 uses the fourth color coordinates to calculate the driving current, and sends the calculated driving current parameters to the lighting device 100, and the lighting device uses the driving current The parameter adjusts the output light of the lighting device 100 to the target light, so that the target light illuminates the target object. In the above embodiment, the image formed by the output light of the lighting device 100 and irradiated on the target object is the target image. When dimming and controlling the lighting equipment, only the color of the illuminated object (i.e. the target object) in the photo is used as the color of the light to control the output light of the lighting equipment, which cannot accurately control the target light and quantitatively strengthen the illuminated object. To solve the problem of object color, it realizes the use of light color to control the output of lighting equipment, accurately controls the target light, and quantitatively enhances the color of the illuminated object.

According to the above-mentioned embodiments of the present utility model, the lighting device includes one or more LED lamps, and each lamp includes: a second communication interface, a microcontroller, a driver, and an LED chipset, wherein the second communication interface communicates with the lighting control device The first communication interface is connected to receive the driving current parameter output by the first communication interface; the microcontroller is connected to the second communication interface and used to convert the driving current parameter into a dimming signal; the driver is connected to the microcontroller , used to drive the LED chipset with the dimming signal; the LED chipset is connected with the driver, and used to output the target light through the control of the dimming signal.

Among them, the lighting equipment of the lighting system may include one or more LED lamps, and the LED lamps may be multi-color (such as RGB) LED chips, and the image processing device may include one or more digital imaging devices (such as cameras), where the LED Each group of LED chips of the same color in the lamp is controlled by the same current or voltage signal.

In the above embodiments of the present utility model, the LED chip set includes one or more LED chips, and each LED chip includes a third communication interface, and the third communication interface is used for receiving dimming signals.

Specifically, as shown in FIG. 3 , the LED lamp 110 may be a bulb lamp as shown in FIG. 3 , or any other lamp, such as a downlight, a tube lamp, a flat lamp, a spotlight, and the like. The LED lamp 110 may include a second communication interface 111, a microcontroller 113, and an LED chipset 115, wherein the LED chipset 115 may include a plurality of LED chips, and the LED chips may have three or more different spectrums or different colors. There may be one or more LED chips for each LED chip with the same spectrum or color, and the microcontroller 113 may output a current or voltage dimming signal to each group of LED chips with the same color. Wherein, as shown in FIG. 3 , the LED chipset 115 may include a first chip 131, a second chip 133 and a third chip 135, and a target object 500 is shown in FIG. 3 , and the target object 500 is a fruit in this figure. .

According to the above embodiments of the present invention, the first communication interface and the second communication interface are wireless communication interfaces.

In addition, an operation interface can be provided for the user on the lighting control device. In this operation interface, the user can arbitrarily select the color effect of the target object to be achieved. The color effect can be to enhance the saturation, contrast, or even Change the color of the illuminated object itself (such as: old photo effect, etc.).

Specifically, the original image can be color-transformed according to the needs of the user, such as: color strengthening, color weakening, making the photo old (that is, transforming the color in the initial image into the color form of the old photo) and so on.

Specifically, as shown in FIG. 4, the first sub-calculator 330 in the first calculator in the above-mentioned embodiment first performs reciprocal calculation on the first color coordinate to obtain the reciprocal of the first color coordinate; then the multiplier 310 passes Calculate the fourth color coordinate [e' _r , e' _g , e' _b ] ^T with the following formula:

${<span\; class="notranslate">\; [</span>{\mathrm{<span\; class="notranslate">\; e</span>}}^{<span\; class="notranslate">\; ,</span>}}_{\mathrm{<span\; class="notranslate">\; r</span>}}<span\; class="notranslate">\; ,</span>{{\mathrm{<span\; class="notranslate">\; e</span>}}^{<span\; class="notranslate">\; ,</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; ,</span>{{{\mathrm{<span\; class="notranslate">\; e</span>}}^{<span\; class="notranslate">\; ,</span>}}_{\mathrm{<span\; class="notranslate">\; b</span>}}<span\; class="notranslate">\; ]</span>}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; diag</span>}<span\; class="notranslate">\; (</span>{{<span\; class="notranslate">\; [</span>\mathrm{<span\; class="notranslate">\; R</span>}}_{\mathrm{<span\; class="notranslate">\; e</span>}}^{<span\; class="notranslate">\; \&prime;</span>}<span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; G</span>}}_{\mathrm{<span\; class="notranslate">\; e</span>}}^{<span\; class="notranslate">\; \&prime;</span>}<span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; B</span>}}_{\mathrm{<span\; class="notranslate">\; e</span>}}^{<span\; class="notranslate">\; \&prime;</span>}<span\; class="notranslate">\; ]</span>}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&CenterDot;</span><span\; class="notranslate">\; (</span><span\; class="notranslate">\; [</span>\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{{\mathrm{<span\; class="notranslate">\; R</span>}}_{\mathrm{<span\; class="notranslate">\; e</span>}}}<span\; class="notranslate">\; ,</span>\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{{\mathrm{<span\; class="notranslate">\; G</span>}}_{\mathrm{<span\; class="notranslate">\; e</span>}}}<span\; class="notranslate">\; ,</span>{\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{{\mathrm{<span\; class="notranslate">\; B</span>}}_{\mathrm{<span\; class="notranslate">\; e</span>}}}<span\; class="notranslate">\; ]</span>}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&CenterDot;</span>{<span\; class="notranslate">\; [</span>\mathrm{<span\; class="notranslate">\; e</span>}}_{\mathrm{<span\; class="notranslate">\; r</span>}}<span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; e</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; ,</span>{{\mathrm{<span\; class="notranslate">\; e</span>}}_{\mathrm{<span\; class="notranslate">\; b</span>}}<span\; class="notranslate">\; ]</span>}^{\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; ,</span>$

in, $\mathrm{diag}\left(\right[R_e^{\&prime;},G_e^{\&prime;},{B_e^{\&prime;}]}^T)=\left[\begin{array}{ccc}{R}_e^{\&prime;}& 0& 0\\ 0& G_e^{\&prime;}& 0\\ 0& 0& B_e^{\&prime;}\end{array}\right],$ diag([R′ _e , G′ _e , Be _e ′] ^T ) is a diagonal matrix composed of three elements of the vector [R′ _e , G′ _e , Be _e ′] ^T as diagonal elements, [R′ _e , G′ _e , Be _e ′] ^T is the second color coordinate,

为向量

的三个元素作为对角元构成的对角矩阵，

是第一色坐标的倒数，[e_r，e_g，e_b]^T是第三色坐标。 $\mathrm{diag}\left(\right[\frac{1}{R_e},\frac{1}{G_e},{\frac{1}{B_e}]}^T)=\left[\begin{array}{ccc}\frac{1}{R_e}& 0& 0\\ 0& \frac{1}{G_e}& 0\\ 0& 0& \frac{1}{B_e}\end{array}\right],$

as a vector

The three elements of are used as a diagonal matrix composed of diagonal elements,

is the reciprocal of the first color coordinate, [e _r , e _g , e _b ] ^T is the third color coordinate.

Specifically, the second calculator in the above embodiment first performs coordinate conversion on the fourth color coordinates to obtain the fifth color coordinates, wherein the fourth color coordinates are RGB color coordinates, and the fifth color coordinates are XYZ color coordinates, and then The luminous flux is calculated according to the fifth color coordinate and the intrinsic color coordinate to obtain the first luminous flux of the lighting device.

More specifically, the second calculator performs the CIE coordinate transformation on the fourth color coordinate by the following formula to obtain the fifth color coordinate [X, Y, Z] ^T , the formula is:

[X, Y, Z] ^T ＝T _RGB2XYZ [e' _r , e' _g , e' _b ] ^T , wherein, [e' _r , e' _g , e' _b ] ^T is the fourth color coordinate, T _RGB2XYZ is the transformation matrix for performing CIE coordinate transformation on the fourth color coordinate.

In addition, the first luminous flux may include the R channel luminous flux, the G channel luminous flux and the B channel luminous flux, wherein the second calculator may derive the first formula through the color matching formula and the coordinate conversion formula,

The color matching formula is: X＝X _R +X _G +X _B , Y＝Y _R +Y _G +Y _B , Z＝Z _R +Z _G +Z _B ,

The coordinate conversion formula is: $x_c=\frac{x_c}{x_c+Y_c+Z_c},$ ${\mathrm{the\; y}}_c=\frac{Y_c}{x_c+Y_c+Z_c},$

c为R通道、G通道或B通道中的任意一个，X为第五色坐标的X坐标，Y为第五色坐标的Y坐标，Z为第五色坐标的Z坐标，X_R为R通道的X坐标，X_G为G通道的X坐标，X_B为B通道的X坐标，Y_R为R通道的Y坐标，Y_G为G通道的Y坐标，Y_B为B通道的Y坐标，Z_R为R通道的Z坐标，Z_G为G通道的Z坐标，Z_B为B通道的Z坐标，x_c为固有色坐标的x坐标，y_c为固有色坐标的y坐标，in,

c is any one of R channel, G channel or B channel, X is the X coordinate of the fifth color coordinate, Y is the Y coordinate of the fifth color coordinate, Z is the Z coordinate of the fifth color coordinate, X _R is the R channel X coordinate, X _G is the X coordinate of G channel, X _B is the X coordinate of B channel, Y _R is the Y coordinate of R channel, Y _G is the Y coordinate of G channel, Y _B is the Y coordinate of B channel, Z _R is the Z coordinate of the R channel, Z _G is the Z coordinate of the G channel, Z _B is the Z coordinate of the B channel, x _c is the x coordinate of the intrinsic color coordinate, y _c is the y coordinate of the intrinsic color coordinate,

The first formula is: $\left\{\begin{array}{c}\frac{\frac{x_R}{{\mathrm{the\; y}}_R}+\frac{x_G}{{\mathrm{the\; y}}_G}\&Center\; Dot;R_{G/R}+\frac{x_B}{{\mathrm{the\; y}}_B}\&CenterDot;R_{B/R}}{1+R_{G/R}+R_{B/R}}=\frac{x}{\mathrm{the\; y}}\\ \frac{\frac{z_R}{{\mathrm{the\; y}}_R}+\frac{z_G}{{\mathrm{the\; y}}_G}\&Center\; Dot;R_{G/R}+\frac{z_B}{{\mathrm{the\; y}}_B}\&Center\; Dot;R_{B/R}}{1+R_{G/R}+R_{B/R}}=\frac{z}{\mathrm{the\; y}}\end{array},\right.$

Among them, R _G/R is the second proportional factor, R _B/R is the third proportional factor, the second proportional factor is the ratio of the luminous flux of the G channel to the R channel luminous flux, and the third proportional factor is the ratio of the luminous flux of the B channel to the R channel luminous flux ratio;

After the second scaling factor and the third scaling factor are calculated by the first formula, the luminous flux calculation is performed on the second scaling factor, the third scaling factor and the preset luminous flux by the following formula to obtain the R channel luminous flux, the G channel luminous flux and B channel luminous flux, where the preset luminous flux is the luminous flux of the target image, the formula is:

Φ＝Φ _R +Φ _R R _G/R +Φ _R R _B/R , Φ _G ＝Φ _R R _G/R , Φ _B ＝Φ _R R _B/R , where Φ is the preset luminous flux , Φ _R is the luminous flux of the R channel, Φ _G is the luminous flux of the G channel, and Φ _B is the luminous flux of the R channel.

Wherein, the preset luminous flux in the above embodiment may be a preset luminous flux value of any target light irradiated on the target object.

Fig. 5 is a schematic structural diagram of an apparatus for controlling output light of a lighting device according to an embodiment of the present invention. As shown in Figure 5, the device includes: a first acquisition module 10, configured to acquire an initial image formed by the initial light irradiating the target object; a first processing module 30, used to perform color processing on the initial image, to obtain the processed target object Image; the first extraction module 50 is used to extract the first color coordinates of the characteristic color of the initial image and the second color coordinates of the characteristic color of the target image respectively; the first calculation module 70 is used for according to the first color coordinates, the second The color coordinates and the third color coordinates perform light source estimation calculations to obtain the fourth color coordinates, wherein the third color coordinates are the default color coordinates of the color of the pre-stored initial light; the second processing module 90 is used to obtain the fourth color coordinates and the inherent color coordinates to calculate the driving current to obtain the driving current parameters, wherein the inherent color coordinates are the attribute parameters of the pre-stored lighting equipment, and the lighting equipment is used to output the initial light; the third processing module 110 is used to use the driving current parameters as The dimming driving signal is used to adjust the output light of the lighting device to the target light.

With the device for controlling the output light of lighting equipment of the present utility model, after obtaining the initial image of the target object irradiated by the initial light, image processing is performed on the initial image to obtain the target image, and then the required lighting is extracted from the target image by the method of light source estimation The color coordinates of the color of the light, that is, the color coordinates of the target light, and then use the color coordinates to calculate the driving current of the target light, and use the calculated driving current parameters as the dimming drive signal to adjust the output light of the lighting device to Target light, so that the target light is irradiated on the target object to form a target image, which solves the problem of only using the color of the illuminated object in the photo captured by the imaging device as the color of the light when dimming and controlling the lighting equipment in the prior art To control the output light of the lighting equipment, it is impossible to accurately control the target light and quantitatively enhance the color of the object to be illuminated. It realizes the use of light color to control the output of the lighting equipment, accurately controls the target light, and thus quantitatively enhances the color of the object to be illuminated. .

Wherein, the characteristic color may be the color of any pixel in the image, or may be the main color of the target object in the image. Specifically in the above-mentioned embodiments of the present utility model, the calculation method of the characteristic color of the initial image is consistent with the characteristic color of the target image, and the characteristic color of the initial image and the characteristic color of the target image can be the corresponding pixels in the two images respectively The color of the point may also be the main color of the target object in the two images respectively. In the above embodiments, the characteristic color of the target image/initial image is preferably the main color of the target object in the image.

In the above-mentioned embodiments of the present invention, the target object is first illuminated with any output color temperature of the lamp in the lighting equipment, and the light is the initial light, and then the target object is photographed with a digital imaging device to obtain an initial image, and then Any output color temperature of the lamps in the lighting device in the above method may be the default initial light of the lighting device, or may be the nominal value of the color temperature of the lighting device.

Specifically, in the above-mentioned embodiment, the color processing function in digital image processing can be used to enhance the color of the initial image, obtain the target image, and then extract the main color of the target object in the target image (that is, the color with the highest frequency of occurrence), and Not all pixel colors in the target image are used.

Specifically, according to the first luminous flux Φ _R , Φ _G , Φ _B of each group of LEDs of the same color obtained in the above embodiment and the first proportional factor, linear calculation is performed to obtain the driving current parameter to reach the first luminous flux, and the driving current parameter can be The driving current value, wherein the first proportional factor may be a ratio of the driving current to the luminous flux output by each group of LEDs of the same color in the lighting device. The first scaling factor can be obtained by fitting experimental data. The driving current value calculated in the above embodiment can be used as the dimming driving signal, and the output light of the lighting device can be adjusted by using these dimming driving signals, so that the output light of the lighting device is the target light, and the target light can be irradiated on the target object. Form the target image.

Through the above-mentioned embodiments of the present application, by extracting the fourth color coordinate of the light color in the target image, and calculating the luminous flux of the fourth color coordinate, and using the luminous flux calculation to obtain the dimming drive signal, the dimming drive signal is The characteristic color of the target object can be made to reach the characteristic color of the target image obtained by image processing the initial image.

From the above description, it can be seen that the utility model achieves the following technical effects: by arranging or integrating the imaging device, image processor and controller in the same lighting control device, the imaging device in the lighting control device can obtain The initial image, after the target image and the fourth color coordinates are obtained by the image processor according to the initial image, the driving current parameters are obtained by the controller according to the fourth color coordinates and the intrinsic color coordinates, and the driving current parameters are output to the lighting equipment to adjust the lighting The output light of the device. Through the lighting control device of the present utility model, image acquisition, image processing and acquisition of driving current parameters can be realized, and the obtained driving current parameters can be used to adjust the lighting The equipment works together to adjust the light to control the lighting equipment, which is costly and inconvenient to carry, and realizes the control of the lighting equipment in the same control equipment.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A lighting control device, characterized in that the lighting control device comprises: an imaging device, an image processor and a controller, wherein, The imaging device is used to obtain an initial image formed by illuminating the target object with initial light; The image processor includes a first sub-image processor and a first processor, wherein, The first sub-image processor, connected to the imaging device, is used to perform color processing according to the initial image to obtain a target image; The first processor, connected to the first sub-image processor, is used to perform color coordinate calculation according to the initial image and the target image, so as to obtain a fourth color coordinate; The controller includes: a second processor and a first communication interface, wherein, The second processor, connected to the first processor, is used to calculate the driving current according to the fourth color coordinate and the intrinsic color coordinate to obtain the driving current parameter, wherein the intrinsic color coordinate is the lighting device Attribute parameters; The first communication interface is connected with the second processor, and is used to output the driving current parameter to the lighting device. 2. The lighting control device according to claim 1, wherein the lighting control device further comprises a third processor, and the first processor processes the first sub-image through the third processor device connection, wherein the third processor includes: a first extracting device, a first reading device and a first sending device, The first extracting device is connected to the first sub-image processor, and is used to respectively extract the first color coordinates of the characteristic color of the initial image and the second color coordinates of the characteristic color of the target image; The first reading device is used to read the pre-stored third color coordinates of the color of the initial light; The first sending device is respectively connected with the first extracting device, the first reading device and the first processor, and is used to transmit the first color coordinates, the second color coordinates and the The third color coordinates are sent to the first processor. 3. The lighting control device of claim 2, wherein the first processor comprises: A first calculator, connected to the first sending device, configured to perform light source estimation calculation on the first color coordinate, the second color coordinate, and the third color coordinate, so as to obtain the fourth color coordinate. 4. The lighting control device of claim 1, wherein the second processor comprises: The second extracting device is used to extract the pre-stored inherent color coordinates of the lighting equipment; A second calculator, connected to the second extracting device, for calculating the luminous flux according to the fourth color coordinate and the intrinsic color coordinate, so as to obtain the first luminous flux of the lighting device; The third calculator, connected to the second calculator, is used to perform linear calculation according to the first luminous flux and the first scaling factor to obtain the driving current parameter, wherein the first scaling factor is the The ratio between the driving current of the lighting device and the luminous flux of the lighting device. 5. The lighting control device according to claim 1, wherein the first sub-image processor comprises: The second sub-image processor is connected to the imaging device, and is used to perform white balance processing on the initial image, so as to obtain an initial image after white balance processing; The third sub-image processor is connected to the second sub-image processor, and is configured to perform color enhancement processing on the white balance-processed initial image to obtain the target image. 6. The lighting control device according to claim 1, wherein the first sub-image processor comprises: A fourth sub-image processor, connected to the imaging device, is used to perform color conversion processing on the initial image to obtain the target image. 7. A lighting system, characterized by comprising: a lighting device and the lighting control device according to any one of claims 1 to 6, wherein, The lighting device is connected to the lighting control device, and the lighting device is used to output initial light and target light. 8. The lighting system according to claim 7, wherein the lighting equipment includes one or more LED lamps, each of which includes: a second communication interface, a microcontroller, a driver, and an LED chipset, in, The second communication interface is connected to the first communication interface of the lighting control device, and is used to receive the driving current parameter output by the first communication interface; The microcontroller is connected to the second communication interface, and is used to convert the driving current parameter into a dimming signal; The driver, connected to the microcontroller, is used to drive the LED chipset using the dimming signal; The LED chipset is connected to the driver and used to output the target light through the control of the dimming signal. 9. The lighting system according to claim 8, wherein the LED chipset includes one or more LED chips, and each of the LED chips includes a third communication interface, and the third communication interface uses for receiving the dimming signal. 10. The lighting system according to claim 8, wherein the first communication interface and the second communication interface are wireless communication interfaces.

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