Brightness Adjustment Method, Device, Light Source Device and Electronic Device

Abstract

The present invention discloses a brightness adjustment method, device, light source device and electronic device, relating to the field of display technology. In the present invention, an incident light is dispersed into multiple outgoing lights by an optical waveguide provided with a plurality of color filter elements, and the transmittance and reflectance of each outgoing light corresponding to the regional light intensity can be adjusted by setting the color filter parameters of the color filter elements. Moreover, the color filter parameters of each color filter element in the optical waveguide are determined according to the resolution and brightness information of the original image, thereby realizing automatic adjustment of brightness and enhancing the user experience.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and in particular, to a brightness adjustment method, device, light source device, and electronic device. Background Art

[0002] A display device is a device that can output images or tactile information. With the continuous development of technology, there are more and more types of display devices, such as laser TVs, tablet computers, projection devices, etc. Among them, a projection device is a device that can project an image or video onto a screen and can be connected to a computer or the like through different interfaces to play corresponding video signals. Currently, projection devices are widely used in various scenarios, such as office briefings, playing movies, installation art, etc., and the required projection effects in different scenarios are not exactly the same. Brightness is an important technical index of display devices and also an important factor affecting the display effect. Summary of the Invention

[0003] The brightness adjustment of existing display devices usually requires users to manually adjust according to their own needs, and can only adjust the brightness of the entire screen, that is, enhance or weaken the whole, and cannot perform local adjustment. In view of this, the present invention provides a brightness adjustment method, device, light source device, and electronic device, which can automatically adjust the brightness according to the information of the original image and can achieve local adjustment of the brightness.

[0004] In a first aspect, the present invention provides a brightness adjustment method, including:

[0005] Obtaining the resolution and brightness information of the original image;

[0006] Determining a color filter matrix F of an optical waveguide according to the resolution and the brightness information, where the optical waveguide is used to disperse incident light into M×N beams of outgoing light, the optical waveguide includes M×N color filter elements arranged in an array, and the elements of the color filter matrix F correspond to the color filter parameters of the color filter elements, where M≥1 and N≥1;

[0007] Adjusting the color filter characteristics of each color filter element in the optical waveguide according to the color filter matrix F.

[0008] In a second aspect, the present invention provides a brightness adjustment device, including a brightness adjustment module, where the brightness adjustment module is used to perform the following steps:

[0009] Obtaining the resolution and brightness information of the original image;

[0010] Determining a color filter matrix F of an optical waveguide according to the resolution and the brightness information, where the optical waveguide is used to disperse incident light into M×N beams of outgoing light, the optical waveguide includes M×N color filter elements arranged in an array, and the elements of the color filter matrix F correspond to the color filter parameters of the color filter elements, where M≥1 and N≥1;

[0011] Adjust the color filtering characteristics of each color filtering element in the optical waveguide according to the color filter matrix F.

[0012] In a possible implementation, the determining the color filter matrix F of the optical waveguide according to the resolution and the brightness information includes:

[0013] Determine a brightness matrix S according to the resolution, the brightness information, and the number of color filtering elements in the optical waveguide;

[0014] Obtain an adjustment factor matrix Z;

[0015] Determine the color filter matrix F according to the brightness matrix S and the adjustment factor matrix Z, where F = SZ or F = ZS.

[0016] In a possible implementation, the determining the brightness matrix S according to the resolution, the brightness information, and the number of color filtering elements in the optical waveguide includes:

[0017] Determine the element value of the brightness matrix S according to the brightness information of k pixels in an adjacent relationship, where k = (P × Q) / l, where P × Q is the resolution and l is the number of elements of the brightness matrix S.

[0018] In a possible implementation, the obtaining the adjustment factor matrix Z includes:

[0019] Obtain one or more of the ambient light brightness and the display mode;

[0020] Determine the adjustment factor matrix Z according to one or more of the ambient light brightness and the display mode.

[0021] In a possible implementation, the values of the elements in the adjustment factor matrix Z include at least two different values.

[0022] In a possible implementation, the color filter matrix F is an M × (N - 1) matrix or an (M - 1) × N matrix.

[0023] In a possible implementation, the brightness matrix S is an M × (N - 1) matrix or an (M - 1) × N matrix.

[0024] In a third aspect, the present invention provides a light source device, including:

[0025] A light source for emitting a light beam;

[0026] An optical waveguide located on the light-emitting side of the light source device, the optical waveguide being configured to disperse incident light into M × N outgoing light beams, the optical waveguide including M × N color filtering elements arranged in an array, where M ≥ 1 and N ≥ 1;

[0027] A voltage control module is connected to the color filter elements in the optical waveguide. The voltage control module is configured to obtain the resolution and brightness information of the original image; determine a color filter matrix F of the optical waveguide according to the resolution and the brightness information, where the elements of the color filter matrix F correspond to the color filter parameters of the color filter elements; and adjust the color filtering characteristics of the color filter elements in the optical waveguide according to the color filter matrix F.

[0028] In a fourth aspect, the present invention provides an electronic device, including a memory, a processor, and a computer program stored on the memory. The processor executes the computer program to implement the method described in the first aspect.

[0029] In a fifth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method described in the first aspect is implemented.

[0030] In a sixth aspect, the present invention provides a computer program product, including computer-readable code, or a non-volatile computer-readable storage medium carrying the computer-readable code. When the computer-readable code runs in an electronic device, the processor in the electronic device executes the method described in the first aspect.

[0031] It should be noted that the device described in the second aspect, the light source device described in the third aspect, the electronic device described in the fourth aspect, the storage medium described in the fifth aspect, and the computer program product described in the sixth aspect are used to execute the method provided in the first aspect above. Therefore, the same beneficial effects as those of the method described in the first aspect can be achieved, and the present invention will not be elaborated one by one.

[0032] In the present invention, an optical waveguide provided with a plurality of color filter elements disperses incident light into multiple beams of outgoing light. The light intensity of the area corresponding to each beam of outgoing light can adjust the transmittance and reflectivity by setting the color filter parameters of the color filter elements, and determine the color filter parameters of each color filter element in the optical waveguide according to the resolution and brightness information of the original image, realizing automatic adjustment of brightness and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of functional modules of a projection device provided by an embodiment of the present invention;

[0034] Figure 2 It is a schematic structural diagram of a projection device provided by an embodiment of the present invention;

[0035] Figure 3 It is a schematic structural diagram of a light source device provided by an embodiment of the present invention;

[0036] Figure 4 It is a flowchart of a brightness adjustment method provided by an embodiment of the present invention;

[0037] Figure 5 A structural schematic diagram of an electronic device provided by an embodiment of the present invention. Detailed implementation manners

[0038] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Although the disclosed content in the present invention is introduced according to one or several exemplary examples, it should be understood that each aspect of these disclosed contents can also form a complete technical solution alone. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0039] In order to thoroughly understand the present invention, a detailed description will be provided below to explain the technical solutions of the present invention. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention can also have other implementation manners.

[0040] Figure 1 A functional module schematic diagram of a projection device provided by an embodiment of the present invention. As Figure 1 shown, the projection device includes an image processor 101 and a projection optical engine 102. Among them:

[0041] The image processor 101 can be a microcontroller, a dedicated image processing chip, etc. The microcontroller can be an ARM chip, a microcontroller unit (MCU), etc.; the dedicated image processing chip can be an image signal processor (ISP), a graphics processing unit (GPU), an embedded neural network processor (NPU), etc. The image processor 101 can be used for video decoding, picture quality processing, etc.

[0042] The projection optical machine 102 may include a driving chip, a spatial light modulator, a light source, etc. Among them, the light source may include a laser light source, an LED light source, a fluorescent light source, etc.; the spatial light modulator may be a Digital Micromirror Device (DMD), a Liquid Crystal Display (LCD), a Liquid Crystal on Silicon (LCOS), etc., which is used to modulate the light from the light source to generate image light; the driving chip corresponds to the spatial light modulator. For example, the digital micromirror device can be driven by a Digital Light Processing (DLP) element. The projection optical machine 102 is used to project the image to be projected into a projection screen.

[0043] In some embodiments, the projection device further includes a central controller 103 with one or more processing cores. The central controller may be a controller such as a CPU, ARM, MCU, etc. The central controller 103 is the control center of the projection device. It uses various interfaces and lines to connect all parts of the projection device, and can run or execute software programs and / or operating systems stored in the storage module 104, and call data stored in the storage module 104. Optionally, the image processor 101 and the central controller 103 may be integrated into one processor.

[0044] In some embodiments, the projection device further includes components such as a storage module 104 with one or more computer-readable storage media, an input module 105, a communication module 106, a power supply 107, etc. Those skilled in the art can understand that Figure 1 the structure of the projection device shown in does not constitute a limitation on the projection device, and may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements. Among them:

[0045] The storage module 104 can be used to store software programs and operating systems. The central controller 103 executes various functional applications and data processing by running the software programs and operating systems stored in the storage module 104. The storage module 104 may mainly include a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the projection device. In addition, the storage module 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Correspondingly, the storage module 104 may also include a memory controller to provide the central controller 103 with access to the storage module 104.

[0046] The projection device may further include an input module 105, which can be used to receive input digital or character information, and generate remote control, keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0047] The projection device may further include a communication module 106. In some embodiments, the communication module 106 may include a wireless module. The projection device can perform short-distance wireless transmission through the wireless module of the communication module 106, thereby providing users with wireless broadband Internet access. For example, the communication module 106 can be used to help users access streaming media, etc.

[0048] The projection device may also include a power supply 107 for powering each component. In some embodiments, the power supply 107 may be logically connected to the central controller 103 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. The power supply 107 may also include any components such as one or more DC or AC power supplies, a recharge system, a power failure detection circuit, a power converter or inverter, and a power status indicator.

[0049] Figure 2 It is a schematic structural diagram of a projection device provided by an embodiment of the present invention. As Figure 2 shown, the projection device includes a light source device 201, an optical system 202, and an imaging system 203. Among them, the light source device 201 includes one or more light sources; the optical system 202 includes optical elements for collimating and combining the light of the light source, and light homogenizing elements for homogenizing the light of the light source, such as a light bar or a fly-eye, etc.; the light beam emitted by the light source device 201 is irradiated to a spatial light modulator (not shown in the figure) through the optical system 202, and the spatial light modulator irradiates its incident light into the imaging system 203, and finally images the image light onto a projection object such as a screen. The imaging system 203 is generally a lens system, such as a projection lens.

[0050] In addition, the projection device may further include a light source control module (not shown in the figure), which can control the actions of one or more light sources in the light source device 201, so that the light source device 201 emits light in a specified wavelength band required for generating an image. Further, the light source device 201, the optical system 202, and the imaging system 203 may all be included in the projection optical engine 102 (refer to Figure 1 ).

[0051] In the embodiment of the present invention, the light source device 201 includes a light source 1, a beam splitting device 2, and an optical waveguide 3, as Figure 3As shown in the figure. The light source 1 is used to emit light source light; the beam splitting device 2 is located on the light output side of the light source 1 and is used to split a beam of light source light into multiple beams of secondary light source light; the optical waveguide 3 is located on the light output side of the beam splitting device 2, and a plurality of color filtering elements are arranged therein, which are used to split the secondary light source light emitted by the beam splitting device 2 again to obtain more dispersed output light beams. Exemplarily, the color filtering element can be an electrochromic element, such as an electrochromic color filter. By changing the voltage, the material characteristics of the color filter are changed, and the refractive index is changed so that the wavelength transmittance and reflectance are inconsistent. In the embodiment of the present invention, the beam splitting device 2 and the optical waveguide 3 are two different elements. In some other embodiments, the beam splitting device 2 and the optical waveguide 3 can be an integral element, and the light source 1 can also emit multiple beams of light source light. The present invention does not limit this.

[0052] Further, the light source device 201 further includes a voltage control module (not shown in the figure), which is connected to the color filtering elements in the optical waveguide 3 and is used to adjust the color filtering characteristics of each color filtering element, such as transmittance and reflectance, to achieve the brightness adjustment of each output light beam.

[0053] Continue to refer to Figure 3 , in the embodiment of the present invention, it is assumed that the beam splitting device 2 disperses a beam of light source light emitted by the light source 1 into 4 beams of secondary light source light, and the optical waveguide 3 is provided with 4×4 color filtering elements arranged in an array, which are used to disperse the 4 beams of secondary light source light emitted by the beam splitting device 2 into 4×4 beams of output light.

[0054] The brightness adjustment method provided by the embodiment of the present invention can be realized by running or executing software programs and / or operating systems stored in the storage module 104 by the central controller 103, or can be realized by the image processor 101 executing corresponding instructions. As Figure 4 shown, the brightness adjustment method provided by the embodiment of the present invention includes the following contents:

[0055] S1001. Obtain the resolution and brightness information of the original image.

[0056] When a display device such as a projection device is used to display the original image, the original image usually comes with some information, such as resolution, brightness, size, etc. The embodiment of the present invention determines the color filtering parameters of each color filtering element in the optical waveguide according to the resolution and brightness information of the original image, realizes the automatic adjustment of brightness, and improves the user experience.

[0057] S1002. Determine the color filtering matrix F of the optical waveguide according to the resolution and the brightness information.

[0058] Exemplarily, assume that the resolution of the original image is P×Q, then the brightness information of the original image includes P×Q brightness values. In order to make the output image of the projection device as close as possible to the original image, the color filtering matrix F of the optical waveguide can be determined according to the brightness information of the original image 44, where the color filter matrix F 44 The element f xy corresponds to the color filter parameters of 4×4 color filter elements, so as to adjust the transmittance and reflectance of each color filter element, so that the intensity of each outgoing beam of the optical waveguide corresponds to the brightness information of the original image. Specifically, the value of f xy can be obtained according to the pixel brightness information of the corresponding area of the original image corresponding to the outgoing light of each color filter element. For example, if there are multiple brightness levels divided, different brightness levels correspond to different color filter parameters. After obtaining the brightness information of the original image, the color filter parameters of the color filter elements can be determined according to the brightness level to which the brightness information belongs.

[0059] In some embodiments, the following method can also be used to determine the color filter matrix F of the optical waveguide:

[0060] S201. Determine the brightness matrix S according to the resolution, the brightness information, and the number of color filter elements in the optical waveguide.

[0061] Considering factors such as cost and device size, the number of color filter elements in the optical waveguide is usually less than the number of pixels of the original image. Therefore, the brightness matrix S corresponding to the number of color filter elements in the optical waveguide can be determined first. Exemplarily, the element value in the brightness matrix S 44 can be calculated according to the brightness information of (P×Q) / (4×4) adjacent pixels (such as the average value).

[0062] In some embodiments, the last column or the last row of the optical waveguide can both be reflective elements, such as mirrors. The following takes the last column of the optical waveguide being all reflective elements as an example for illustration. Then, the 4×4 color filter element matrix of the optical waveguide can include 4×3 electrochromic elements arranged in an array. The color filter characteristics of the last column of reflective elements are not adjustable. Therefore, only the 4×3 brightness matrix S can be calculated. Then, the element value in the brightness matrix S 43 can be calculated according to the brightness information of (P×Q) / (4×3) adjacent pixels (such as the average value).

[0063] S202. Obtain the adjustment factor matrix Z.

[0064] Specifically, the adjustment factors corresponding to different brightness levels can be pre-stored in the projection device. According to the brightness to which the value of each element s ij in the brightness matrix S belongs, the corresponding adjustment factor z hk can be obtained, and then the adjustment factor matrix Z composed of the elements z hk is obtained. In this embodiment, since the elements of the adjustment factor matrix Z can be adjusted locally, the light intensity can be enhanced in some areas or weakened in some areas, so as to achieve local adjustment of brightness and / or light homogenization.

[0065] In some embodiments, the adjustment factor matrix Z can also be determined according to the ambient light brightness, display mode, hardware parameters, etc. For example, the brightness level to which the brightness belongs in different ambient light conditions can be determined according to the ambient light brightness-brightness level mapping relationship, and then the adjustment factor matrix Z can be determined. The adjustment factor matrix Z can also be determined according to the display mode. The examples are as follows:

[0066] If the display mode is the local adjustment mode, the adjustment factors for the higher-brightness area or the lower-brightness area correspond to different brightness levels. If the brightness value of the lower-brightness area is less than the minimum brightness value, the adjustment factor corresponds to a high brightness level; if the brightness value of the higher-brightness area is greater than the maximum brightness value, the adjustment factor corresponds to a low brightness level; the brightness levels are evenly divided according to the hardware parameters; the brightness levels to which the brightness belongs in different ambient light conditions can also be determined according to the ambient light brightness-brightness level mapping relationship.

[0067] If the display mode is the high-brightness mode, the adjustment factor for the entire area is the brightness threshold constant or the brightness threshold constant matrix supported by the hardware corresponding to the high-brightness mode. The specific constants of the brightness threshold constant matrix can be set to be the same or different.

[0068] If the display mode is the color mode, the adjustment factor for the entire area is the brightness threshold constant or the brightness threshold constant matrix corresponding to the color gamut supported by the hardware corresponding to the color mode. The specific constants of the brightness threshold constant matrix can be set to be the same or different.

[0069] If the display mode is the comprehensive mode, the adjustment factor is the constant matrix corresponding to the comprehensive mode. The constants in the constant matrix are different. The constants include the constants of the color filtering characteristics of the high-brightness mode and the constants of the color filtering characteristics of the color mode, so that the light output of the pixel partitions includes, for example, green light and part of the transmitted green light, meeting the comprehensive requirements of brightness and color gamut and avoiding the disadvantages of large brightness loss in the color mode and poor color gamut in the brightness mode.

[0070] S203. Determine the color filter matrix F according to the brightness matrix S and the adjustment factor matrix Z, where F = SZ or F = ZS.

[0071] The number of elements of the color filter matrix F corresponds to the number of elements of the brightness matrix S. For example, if the brightness matrix S is a 4×4 matrix, the color filter matrix F is also a 4×4 matrix; if the brightness matrix S is a 4×3 matrix, the color filter matrix F is also a 4×3 matrix. The number of elements of the adjustment factor matrix Z can be obtained according to the matrix calculation rules.

[0072] Exemplarily, it is assumed that in the adjustment factor matrix Z, a value of 1 represents high brightness, a value of 0.5 represents a high color gamut, and a value of 0 represents no outgoing light. If it is in the local adjustment mode, the value of the Z part in the adjustment factor matrix is determined according to the brightness value and the brightness level. For example, if the dark part is adjusted to be darker, the adjustment factor corresponding to the area with a lower brightness value is changed to 0, thereby changing the color filtering characteristics of some color filter elements; if it is in the brightness mode, all or most of the values in the adjustment factor matrix Z are changed to 1; if it is in the color gamut mode, some or all of the values in the adjustment factor matrix Z are changed to 0.5; if it is in the comprehensive mode, some of the values in the adjustment factor matrix Z are changed to 0.5 and some are changed to 1. By setting different color filtering parameters for multiple modes, the static spectroscopic device and the color filter matrix can be used to change the function of the dynamic element to change the mode.

[0073] S1003. Adjust the color filtering characteristics of each color filter element in the optical waveguide according to the color filter matrix F.

[0074] When the color filter element in the optical waveguide is an electrochromic element, the driving voltage of the electrochromic element can be adjusted to change its color filtering characteristics. For example, the driving voltage can be adjusted according to the color filtering parameter-driving voltage mapping relationship to change the color filtering characteristics, so as to realize the brightness adjustment of pixel partitioning, or the driving voltage can be adjusted according to the color filtering parameter-conversion coefficient mapping relationship. The target driving voltage U1 = V1 × U0, where V1 represents the conversion coefficient and U0 represents the driving voltage value corresponding to the primary color filtering parameter. Optionally, the amplitude and / or width of the driving voltage can be adjusted to further change the color filtering characteristics of the electrochromic element.

[0075] An embodiment of the present invention further provides a brightness adjustment device, including a brightness adjustment module, and the brightness adjustment module is used to perform the following steps:

[0076] Obtain the resolution and brightness information of the original image;

[0077] Determine the color filter matrix F of the optical waveguide according to the resolution and the brightness information. The optical waveguide is used to disperse the incident light into M×N beams of outgoing light. The optical waveguide includes M×N color filter elements arranged in an array. The elements of the color filter matrix F correspond to the color filtering parameters of the color filter elements, where M≥1 and N≥1;

[0078] Adjust the driving voltage of each color filter element in the optical waveguide according to the color filter matrix F.

[0079] In an optional example, those skilled in the art can understand that the above device can be specifically integrated into an electronic device, which can be a device such as a terminal, a server, etc. Among them, the terminal can be a device such as a projector, a smart TV, a laser TV, a mobile phone, a tablet computer, a smart Bluetooth device, a laptop computer, a desktop computer, etc.; the server can be a single server or a server cluster composed of multiple servers. In some embodiments, the server can also be implemented in the form of a terminal. In some embodiments, the device can also be integrated into multiple electronic devices. For example, the brightness adjustment device can be integrated into the terminal and the server, and the terminal and the server jointly implement the brightness adjustment method of the present invention. The device can be used to execute each process and / or step of the above method. To avoid repetition, it will not be elaborated here.

[0080] It should be understood that the device here is embodied in the form of functional modules. The term "module" here can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group of processors, etc.) for executing one or more software or firmware programs, a memory, a combined logic circuit and / or other suitable components that support the described functions. The above device has the function of implementing the corresponding steps in the above method; the above function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. In the embodiments of the present invention, the device can also be a chip or a chip system, for example: a system on chip (SoC). The present invention is not limited herein.

[0081] The embodiments of the present invention also provide an electronic device. Figure 5 It is a schematic structural diagram of the electronic device provided by the embodiments of the present invention. As Figure 5 shown, the device 300 includes a processor 301, a memory 302, and a communication interface 303. Among them, the processor 301, the memory 302, and the communication interface 303 communicate with each other through a bus 304. The memory 302 stores instructions executable by the processor 301, and the instructions are loaded and executed by the processor 301 to control the communication interface 303 to send signals and / or receive signals.

[0082] It should be understood that the device 300 may specifically be the projection device in the above embodiments, or the functions of the projection device in the above embodiments may be integrated in the device 300, and the device 300 may be used to execute each step and / or process corresponding to the projection device in the above embodiments. Optionally, the memory 302 may include a read-only memory and a random access memory, and provide instructions and data to the processor 301. A part of the memory 302 may further include a non-volatile random access memory. For example, the memory 302 may further store information about the device type. The processor 301 may be used to execute the instructions stored in the memory 301, and when the processor 301 executes the instructions, the processor 301 may execute each corresponding step and / or process in the above method embodiments.

[0083] It should be understood that in the embodiments of the present invention, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0084] In the implementation process, each step of the above method may be completed by the integrated logic circuit in the hardware of the processor or the instructions in the form of software. The steps of the method disclosed in combination with the embodiments of the present invention may be directly embodied as being executed and completed by the hardware processor, or executed and completed by a combination of the hardware and software modules in the processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor executes the instructions in the memory and combines its hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

[0085] The above embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that contains one or more collections of available media. The available media can be magnetic media (such as floppy disks, hard disks, magnetic tapes), optical media (such as DVDs), or semiconductor media. The semiconductor media can be a solid-state drive.

[0086] It should be understood that in various embodiments of the present invention, the sequence numbers of the above processes do not imply the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention. The modules described as separate components may or may not be physically separated. The components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed to multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present invention.

[0087] In several embodiments provided by the present invention, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, one module or component can be divided into multiple modules or components, or multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be indirect couplings or communication connections through some interfaces, devices, or modules, and can be in electrical, mechanical, or other forms.

[0088] Those of ordinary skill in the art will appreciate that the modules and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the present invention.

[0089] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A brightness adjustment method, characterized in that, Applied to a projection device, the projection device includes a light source device that emits incident light, and includes: Obtain the resolution and brightness information of the original image of the projection device; Determine the color filter matrix F of the optical waveguide according to the resolution and the brightness information. The optical waveguide is used to disperse the incident light into M×N beams of outgoing light. The optical waveguide includes M×N color filter elements arranged in an array. The elements of the color filter matrix F correspond to the color filter parameters of the color filter elements, where M≥1 and N≥1; Adjust the color filter characteristics of each color filter element in the optical waveguide according to the color filter matrix F; The determining the color filter matrix F of the optical waveguide according to the resolution and the brightness information includes: Determine the brightness matrix S according to the resolution, the brightness information, and the number of color filter elements in the optical waveguide; Obtain the adjustment factor matrix Z; Determine the color filter matrix F according to the brightness matrix S and the adjustment factor matrix Z, where F = SZ or F = ZS; The determining the brightness matrix S according to the resolution, the brightness information, and the number of color filter elements in the optical waveguide includes: Determine the element value of the brightness matrix S according to the brightness information of k pixels in an adjacent relationship, where k=(P×Q) / l, where P×Q is the resolution and l is the number of elements of the brightness matrix S.

2. The brightness adjustment method according to claim 1, characterized in that The obtaining the adjustment factor matrix Z includes: Obtain one or more of the ambient light brightness and the display mode; Determine the adjustment factor matrix Z according to one or more of the ambient light brightness and the display mode.

3. A brightness adjustment method according to claim 2, characterized in that The values of the elements in the adjustment factor matrix Z include at least two different values.

4. A brightness adjustment method according to claim 1, characterized in that, The color filter matrix F is an M×(N - 1) matrix or an (M - 1)×N matrix.

5. A brightness adjustment method according to claim 1, characterized in that, The brightness matrix S is an M×(N - 1) matrix or an (M - 1)×N matrix.

6. A light source device, characterized in that, Applying the brightness adjustment method according to any one of claims 1-5, includes: A light source for emitting a light beam; An optical waveguide located on the light-emitting side of the light source device. The optical waveguide is used to disperse the incident light into M×N beams of outgoing light. The optical waveguide includes M×N color filter elements arranged in an array, where M≥1 and N≥1; A voltage control module connected to the color filter elements in the optical waveguide. The voltage control module is used to obtain the resolution and brightness information of the original image; determine the color filter matrix F of the optical waveguide according to the resolution and the brightness information. The elements of the color filter matrix F correspond to the color filter parameters of the color filter elements; adjust the color filter characteristics of each color filter element in the optical waveguide according to the color filter matrix F.

7. An electronic device, comprising a memory, a processor, and a computer program stored on the memory, characterized in that, The processor executes the computer program to implement the method according to any one of claims 1-5.

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