Projection brightness detection method and device, electronic equipment and storage medium

Abstract

The invention discloses a projection brightness detection method and device, electronic equipment and a storage medium. The detection method comprises the following steps: firstly, controlling a projector to project to a curtain; controlling an image acquisition unit to acquire a first image of the curtain, and acquiring first image brightness information in the first image; wherein the first image brightness information comprises a first image brightness value of a first detection point in the first image; controlling the brightness detection unit to detect a first brightness detection value of the first detection point; according to the first image brightness value and the first brightness detection value, obtaining a brightness corresponding relation between the first image brightness value and the first brightness detection value; and deriving a first image brightness detection value corresponding to the first image brightness information according to the brightness corresponding relation. According to the technical scheme provided by the invention, the brightness detection unit only needs to perform one-time brightness detection on the curtain, the overall brightness output to the curtain by the projector can be obtained, and the brightness detection process of the projector can be simplified while the brightness detection accuracy is ensured.

Description

Technical Field

[0001] The present invention relates to the field of detection of vehicle projection equipment, and in particular to a method, device, electronic equipment and storage medium for detecting projection brightness. Background Art

[0002] The brightness of a projector generally refers to the luminous flux, which is a physical quantity that describes the total amount of light emitted by a light source. It is an indicator of the brightness of a light source. The brightness test method of a projector requires the use of an illuminance meter, which measures multiple points and takes the average value, then measures the projected screen area, and multiplies the two to get the brightness. Therefore, in the prior art, the brightness detection of a projector requires a single device to perform multiple measurements, or the purchase of multiple devices for simultaneous measurements. Summary of the invention

[0003] The embodiments of the present invention provide a method, device, electronic device and storage medium for detecting projection brightness. The image brightness information acquired by an image acquisition unit is compared with the brightness detection value detected by a brightness detection unit. The brightness detection unit only needs to perform a brightness detection on the screen once to obtain the overall brightness output by the projector to the screen, which can simplify the brightness detection process of the projector.

[0004] In a first aspect, an embodiment of the present invention provides a method for detecting projection brightness, which is applied to a projector detection device, wherein the projector detection device includes a projector, a brightness detection unit, an image acquisition unit, and a control module; the projector, the brightness detection unit, and the image acquisition unit are all connected to the control module; the detection method includes:

[0005] Controlling the projector to project onto a screen;

[0006] Controlling the image acquisition unit to acquire a first image of the curtain, and acquiring first image brightness information in the first image; wherein the first image brightness information includes a first image brightness value of a first detection point in the first image;

[0007] Controlling the brightness detection unit to detect a first brightness detection value of the first detection point;

[0008] Acquire a brightness correspondence between the first image brightness value and the first brightness detection value according to the first image brightness value and the first brightness detection value;

[0009] The first image brightness detection value corresponding to the first image brightness information is derived according to the brightness correspondence.

[0010] In a second aspect, an embodiment of the present invention provides a device for detecting projection brightness, the device for detecting projection brightness comprising:

[0011] A projection output module, used to control the projector to project onto a screen;

[0012] A first image brightness information acquisition module, used to control the image acquisition unit to acquire a first image of the curtain, and acquire first image brightness information in the first image; wherein the first image brightness information includes a first image brightness value of a first detection point in the first image;

[0013] A first brightness detection value acquisition module, used for controlling the brightness detection unit to detect a first brightness detection value of the first detection point;

[0014] a brightness correspondence acquisition module, configured to acquire a brightness correspondence between the first image brightness value and the first brightness detection value according to the first image brightness value and the first brightness detection value;

[0015] The first image brightness detection value acquisition module is used to derive the first image brightness detection value corresponding to the first image brightness information according to the brightness corresponding relationship.

[0016] In a third aspect, an embodiment of the present invention provides an electronic device, including:

[0017] one or more processors;

[0018] A storage device for storing one or more programs;

[0019] When the one or more programs are executed by the one or more processors, the one or more processors implement the projection brightness detection method described in the first aspect.

[0020] In a fourth aspect, an embodiment of the present invention provides a storage medium comprising computer executable instructions, wherein the computer executable instructions, when executed by a computer processor, are used to perform the projection brightness detection method as described in the first aspect.

[0021] The embodiment of the present invention provides a method for detecting projection brightness, which includes: first controlling a projector to project onto a screen; then controlling an image acquisition unit to acquire a first image of the screen, and acquiring first image brightness information in the first image; wherein the first image brightness information includes a first image brightness value of a first detection point in the first image; then controlling a brightness detection unit to detect a first brightness detection value of the first detection point; and acquiring a brightness correspondence between the first image brightness value and the first brightness detection value according to the first image brightness value and the first brightness detection value; and finally deriving a first image brightness detection value corresponding to the first image brightness information according to the brightness correspondence. It can be understood that the image acquisition unit acquires an image projected onto the screen by the projector, i.e., a first image, and generates a corresponding image brightness value; then controlling the brightness detection unit to perform actual brightness detection on a point in the screen, and compares the detected brightness detection value with the generated image brightness value to generate a corresponding relationship; and deriving brightness detection values ​​of other points on the screen according to the acquired corresponding relationship, thereby obtaining a first image brightness detection value. In this way, the brightness detection unit can be controlled to perform only one brightness detection on the screen to obtain the overall brightness output by the projector to the screen. While ensuring the accuracy of the brightness detection, the brightness detection process of the projector can be simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required to describe the embodiments. Obviously, the drawings introduced are only drawings of a part of the embodiments to be described in the present invention, rather than all the drawings. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a flowchart of a method for detecting projection brightness provided in Embodiment 1 of the present invention;

[0024] Figure 2 is a structural schematic diagram of a projector detection device provided by an embodiment of the present invention;

[0025] Figure 3 This is a step diagram of a method for detecting projection brightness provided in Embodiment 1 of the present invention;

[0026] Figure 4 This is another step diagram of a method for detecting projection brightness provided in the first embodiment of the present invention;

[0027] Figure 5 This is another step diagram of a method for detecting projection brightness provided in the first embodiment of the present invention;

[0028] Figure 6It is a flowchart of a method for detecting projection brightness provided by Embodiment 2 of the present invention;

[0029] Figure 7 is a schematic diagram of the projection effect of the projector provided by an embodiment of the present invention;

[0030] Figure 8 is a structural schematic diagram of another projector detection device provided by an embodiment of the present invention;

[0031] Fig. 9 1 is a flow chart of a method for detecting projection brightness provided in Embodiment 3 of the present invention;

[0032] Fig.10 It is a structural schematic diagram of a projection brightness detection device provided in a fourth embodiment of the present invention;

[0033] Fig.11 It is a structural schematic diagram of an electronic device provided in Embodiment 5 of the present invention. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be fully described below in combination with the drawings in the embodiments of the present invention through specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] Figure 1 is a flow chart of a method for detecting projection brightness provided by the first embodiment of the present invention, with reference to Figure 1 As shown, this embodiment can be applied to brightness detection of a projector. The method can be executed by a device for detecting projection brightness in an embodiment of the present invention, wherein the device can be implemented by software and / or hardware. The method specifically includes the following steps:

[0037] S110, controlling the projector to project onto the screen.

[0038] Among them, the projector is adjusted to project the picture it projects onto the screen. The embodiment of the present invention is mainly used to detect the brightness of the projector projected onto the screen, so as to detect the brightness output effect of the projection. Further, the projector can be controlled to project a full white picture onto the screen, and in order to ensure the accuracy of the brightness detection of the projector, the picture output by the projector is controlled to be projected under a fixed area of ​​the screen, for example, a standard 80-inch screen.

[0039] Furthermore, Figure 2is a schematic diagram of the structure of a projector detection device provided by an embodiment of the present invention. The projection brightness detection method provided by an embodiment of the present invention is applied to the projector detection device. The projector detection device is referred to as Figure 2 As shown, the projector detection device 10 includes a projector 102, a brightness detection unit 104, an image acquisition unit 103 and a control module 101; the projector 102, the brightness detection unit 104 and the image acquisition unit 103 are all connected to the control module 101. Among them, the brightness detection unit 104 can be understood as an illuminance meter, which is used to measure the actual brightness of the position point it detects; the image acquisition unit 103 can be understood as an image acquisition device, which can shoot or capture images of the screen; the control module 101 can be understood as a data processor in the projector detection device 10, which is used to perform corresponding processing on the detected brightness and image acquisition, so as to realize the detection of the brightness of the projector 102. Further, the projector 102, the brightness detection unit 104 and the image acquisition unit 103 are all connected to the control module 101, and the connection mode can be an electrical connection or a communication connection, which is not specifically limited in the embodiment of the present invention.

[0040] Optionally, the control module can control the projector to perform projection output, that is, to project the projector onto the screen. Exemplarily, the control module can be understood as a processor in a smart device (such as a smart phone), which is connected to the projector in communication. When the smart device needs to perform brightness detection on the projector, it will first control the projector to project. Alternatively, when the brightness of the projector needs to be detected, the operator can also control the projector to project onto the screen.

[0041] Specifically, Figure 3 is a step diagram of a method for detecting projection brightness provided in the first embodiment of the present invention, with reference to Figure 2 and Figure 3 As shown, the projector 102 is controlled to project onto the screen 20 .

[0042] S120: Control the image acquisition unit to acquire a first image of the curtain, and acquire first image brightness information in the first image.

[0043] After the projector has projected onto the screen, the image acquisition unit is controlled to acquire the current screen image, that is, to acquire the first image. In addition, the image acquisition unit is connected to the control module and can transmit the acquired first image to the control module. The control module generates the first image brightness information according to the acquired first image, that is, the control module can perform calculations and data processing in combination with the pre-stored correspondence between brightness and image, and preliminarily judge the brightness value at each position based on the acquired first image, thereby acquiring the first image brightness information.

[0044] Furthermore, the first image brightness information includes a first image brightness value of a first detection point, wherein the first detection point can be understood as a marked point selected in the first image, and the brightness value generated by the control module for the point is defined as a first brightness detection value.

[0045] Specifically, Figure 4 This is another step diagram of a method for detecting projection brightness provided in the first embodiment of the present invention, with reference to Figure 2 and Figure 4 As shown, when the screen 20 has a projection image output by the projector 102 , the image acquisition unit 103 is controlled to collect images of the current screen 20 , that is, to shoot, and transmit the shot images to the control module 101 .

[0046] S130 , controlling the brightness detection unit to detect a first brightness detection value of a first detection point.

[0047] Specifically, the brightness detection unit is controlled to detect the actual brightness of the first detection point, and a detection result is obtained: a first brightness detection value. The brightness detection unit may be an illuminance meter, that is, the illuminance meter is controlled to detect the actual brightness of the selected first detection point. It can be understood that the actual brightness value corresponding to the first detection point can be obtained through the brightness detection unit.

[0048] Specifically, Figure 5 This is another step diagram of a method for detecting projection brightness provided in the first embodiment of the present invention, with reference to Figure 2 and Figure 5 As shown, the brightness detection unit 104 is controlled to perform actual brightness detection on the screen 20, but the brightness detection unit 104 detects the position of the first detection point corresponding to the screen 20, and transmits the detection result to the control module 101. It can be understood that, in the detection process of the embodiment of the present invention, the brightness detection unit 104 is used to perform only one brightness detection on the screen 20.

[0049] S140. Obtain a brightness correspondence between the first image brightness value and the first brightness detection value according to the first image brightness value and the first brightness detection value.

[0050] Specifically, the image information of the current curtain is collected by the image acquisition unit, that is, the first image is obtained, and the control module generates the corresponding first image brightness information according to the first image. The first image brightness information includes the first image brightness value of the first detection point. The brightness of the first detection point is actually measured by the brightness detection unit to obtain the first brightness detection value. It can be understood that the first image brightness information is the brightness value of the first detection point obtained by the control module according to the relationship between the pre-stored image and the brightness, that is, the first image brightness information is a calculated value, not the current measured value; and the first brightness detection value is the actual brightness acquisition value of the first detection point according to the brightness detection unit.

[0051] Furthermore, the control module obtains the first image brightness value and the first brightness detection value, and obtains the brightness correspondence between the first image brightness value and the first brightness detection value by processing the first image brightness value and the first brightness detection value. Then, the control module can also deduce the brightness measurement values ​​at other positions (not the first detection point) based on the correspondence.

[0052] S150. Derive a first image brightness detection value corresponding to the first image brightness information according to the brightness correspondence relationship.

[0053] Specifically, the brightness correspondence is obtained through the first image brightness value and the first brightness detection value, that is, the control module calculates the relationship between the brightness of the current image acquisition and the actual measured brightness value. Therefore, the control module can derive the brightness measurement values ​​at other positions (not the first detection point) according to the brightness correspondence, thereby realizing the brightness detection of each position projected by the projector to the screen. And this process only uses the brightness detection unit to perform brightness detection on the first detection point only once, which simplifies the brightness detection process of the projector and reduces the cost of brightness detection of the projector.

[0054] In summary, the embodiment of the present invention provides a method for detecting projection brightness, in which an image acquisition unit acquires an image projected by a projector onto a screen, i.e., a first image, and generates a corresponding image brightness value; then controls a brightness detection unit to perform actual brightness detection on a point on the screen, and compares the detected brightness detection value with the generated image brightness value to generate a corresponding relationship; and calculates the brightness detection values ​​of other points on the screen based on the acquired corresponding relationship, thereby obtaining a first image brightness detection value. In this way, the brightness detection unit can be controlled to perform only one brightness detection on the screen to obtain the overall brightness output by the projector to the screen, which can simplify the brightness detection process of the projector while ensuring the accuracy of the brightness detection.

[0055] Embodiment 2

[0056] Figure 6 is a flow chart of a method for detecting projection brightness provided by Embodiment 2 of the present invention, with reference to Figure 6 As shown, the second embodiment is refined on the basis of the above embodiment, and refines how to obtain the brightness information of the first image in the first image. In this embodiment, the method specifically includes the following steps:

[0057] S210, controlling the projector to project onto the screen.

[0058] S220: Divide the first image into n*n sub-image units, and obtain sub-image brightness information of the multiple sub-image units.

[0059] Furthermore, the first image acquired by the image acquisition unit can be divided into regions. That is, the first image is divided into n*n sub-image units, and the control module acquires the sub-image brightness information of each sub-image unit. By dividing the first image into sub-image units, that is, performing a more refined division, the brightness of each sub-image unit can be acquired and judged more accurately, thereby ensuring that the image brightness information of the first image is generated more accurately, and then the actual brightness detection value obtained subsequently is more accurate, thereby ensuring that the projection brightness detection method is more reliable.

[0060] Optional, Figure 7 is a schematic diagram of the projection effect of the projector provided in an embodiment of the present invention, with reference to Figure 7 As shown, the image acquisition unit acquires the first image at the screen 20 and divides the area into 3*3, so 9 sub-image units 21 can be obtained.

[0061] The sub-image unit includes a first sub-image unit, which can be understood as a region selected from a plurality of sub-image units, and the actual brightness value of the region is subsequently detected, that is, the first sub-image unit is the first detection point, and the brightness value of the first sub-image unit is the first image brightness value.

[0062] Optional, reference Figure 7 As shown, the first sub-image unit 211 is located at the center of the first image.

[0063] For further reference, Figure 7 As shown, the first sub-image unit 211 may be located at the center of the entire first image, that is, the first detection point is located in the central area of ​​the entire first image. Figure 7 Taking the example of dividing the first image into 9 sub-image units 21, the first sub-image unit 211 is the sub-image unit 21 located at the center of the entire first image.

[0064] Specifically, the first sub-image unit 211 or the first detection point is set at the center of the entire first image, that is, the first sub-image unit 211 is at the same or similar distance from the remaining sub-image units 21, which can ensure that the brightness value of the first image obtained is less different from the brightness value of the surrounding images, that is, the error is smaller, and then the brightness detection value obtained subsequently is also less different from the brightness detection value of the surrounding area, that is, the first sub-image unit 211 in the central area is less distant from the surrounding sub-image units 21, which can improve the detection accuracy of the projection brightness detection method.

[0065] Furthermore, Figure 8 is a schematic diagram of the structure of another projector detection device provided by an embodiment of the present invention, referring to Figure 8 As shown, the control module 101 and the image acquisition unit 103 are integrated into the integrated device 30 .

[0066] The brightness detection unit may be an illuminometer, the image acquisition unit may be a device with a camera function, the control module may be a device with a computing and processing function, and the control module and the image acquisition unit may be integrated. Figure 8 As shown, the integrated device 30 includes a control module 101 and an image acquisition unit 103. Optionally, the integrated device includes a smart phone, that is, the control module 101 is a processor in the smart phone, and the image acquisition unit 103 is a camera in the smart phone.

[0067] S230 , controlling the brightness detection unit to detect a first brightness detection value of a first detection point.

[0068] S240. Obtain a brightness correspondence between the first image brightness value and the first brightness detection value according to the first image brightness value and the first brightness detection value.

[0069] S250 , deriving sub-brightness detection values ​​corresponding to a plurality of sub-image units according to the brightness correspondence relationship.

[0070] Specifically, the first image brightness value corresponding to the first sub-image unit can be obtained through the image acquisition unit and the control module, and the first brightness detection value corresponding to the first sub-image unit can be obtained through the brightness detection unit. The brightness correspondence between the regional image brightness value and the first brightness detection value can be obtained. Further, based on the image correspondence, the sub-brightness detection values ​​corresponding to other sub-image units can be derived.

[0071] Optionally, if the image acquisition unit and the control module are integrated into a smart phone, the smart phone obtains the brightness correspondence by comparing the central electric brightness value in the captured first image with the actual brightness value collected by the control brightness detection unit (or it can be considered as the illuminance value obtained by the illuminance meter). According to the brightness correspondence, the illuminance distribution data of all areas in the entire first image is obtained. Exemplarily, if the first image is divided into 9 equally divided 3*3 parts, and an illuminance value is assigned to each part.

[0072] S260: Obtain a brightness average of the plurality of sub-brightness detection values, and multiply the average by the area of ​​the screen to obtain a first image brightness detection value.

[0073] Furthermore, the sub-brightness detection values ​​corresponding to the sub-image units are averaged, and then the average is multiplied by the projection area of ​​the projector onto the screen, so as to obtain the first image brightness detection value.

[0074] For example, if the first image is divided into 9 equally divided 3*3 parts, the various brightness detection values ​​of the 9 parts are averaged, and the average value is multiplied by the area of ​​the projector projection screen, the brightness of the projector can be calculated, that is, the projection brightness detection is realized.

[0075] In summary, the projection brightness detection method provided in the embodiment of the present invention, by refining the processing process of the first image, embodies that the projection brightness detection method has reliability and accuracy.

[0076] Embodiment 3

[0077] Fig. 9 is a flow chart of a method for detecting projection brightness provided by Embodiment 3 of the present invention, with reference to Fig. 9 As shown, this third embodiment is refined on the basis of the above embodiment, and refines how to obtain further detection of projection brightness. In this embodiment, the method specifically includes the following steps:

[0078] S310, controlling the projector to project onto the screen.

[0079] S320: Control the image acquisition unit to acquire a first image of the curtain, and acquire first image brightness information in the first image.

[0080] S330 , controlling the brightness detection unit to detect a first brightness detection value of a first detection point.

[0081] S340. Obtain a brightness correspondence between the first image brightness value and the first brightness detection value according to the first image brightness value and the first brightness detection value.

[0082] S350. Derive a first image brightness detection value corresponding to the first image brightness information according to the brightness correspondence.

[0083] S360, controlling the projector to project onto the screen again.

[0084] S370, controlling the image acquisition unit to acquire the second image of the curtain, and acquiring second image brightness information in the second image.

[0085] S380, controlling the brightness detection unit to detect a second brightness detection value of a second detection point.

[0086] S390. Obtain a brightness correspondence between the second image brightness value and the second brightness detection value according to the second image brightness value and the second brightness detection value.

[0087] S310. Derive a second image brightness detection value corresponding to the second image brightness information according to the brightness correspondence relationship.

[0088] S3110, calculate and obtain an average value of the first image brightness detection value and the second image brightness detection value.

[0089] Further, S360 to S310 can be understood as repeating S310 to S350, that is, controlling the projector to project onto the screen for the second time, and the corresponding second image is the same as the first image, that is, the image information collected by the image acquisition unit under the second projection of the projector. Furthermore, the brightness information of the second image is the same as the brightness information of the first image, the second detection point is the same as the first detection point, the second brightness detection value is the same as the first brightness detection value, and the second image brightness detection value is the same as the first image brightness detection value, and the same reason is not repeated.

[0090] By repeating S310 to S350, the error that may be generated by the projection brightness detection method can be reduced. Fig. 9 It is shown that the projector projects onto the screen twice, and the brightness of the projector is detected in the subsequent steps. In the actual projection brightness detection method, the projector may project onto the screen multiple times and deduce the brightness.

[0091] Furthermore, the two calculated structures are averaged, that is, the average of the first image brightness detection value and the second image brightness detection value is calculated and obtained, so as to further improve the accuracy of the projection brightness detection method.

[0092] In summary, the projection brightness detection method provided by the embodiment of the present invention can reduce the error of projector brightness detection and improve the accuracy of the projection brightness detection method.

[0093] Embodiment 4

[0094] Fig.10This is a schematic diagram of the structure of a projection brightness detection device provided by the fourth embodiment of the present invention. The technical solution of this embodiment can be applied to the case of brightness detection of a projector. The device can be implemented by software and / or hardware and is generally integrated on any electronic device with network communication function, including but not limited to: servers, computers, personal digital assistants and other devices. Fig.10 As shown, the projection brightness detection device 1 provided in this embodiment may include: a projection output module 100, a first image brightness information acquisition module 200, a first brightness detection value acquisition module 300, a brightness correspondence acquisition module 400 and a first image brightness detection value acquisition module 500.

[0095] The projection output module 100 is used to control the projector to project onto the screen.

[0096] The first image brightness information acquisition module 200 is used to control the image acquisition unit to acquire the first image of the curtain and acquire the first image brightness information in the first image; wherein the first image brightness information includes the first image brightness value of the first detection point in the first image.

[0097] The first brightness detection value acquisition module 300 is used to control the brightness detection unit to detect a first brightness detection value of a first detection point.

[0098] The brightness correspondence acquisition module 400 is used to acquire the brightness correspondence between the first image brightness value and the first brightness detection value according to the first image brightness value and the first brightness detection value.

[0099] The first image brightness detection value acquisition module 500 is used to derive a first image brightness detection value corresponding to the first image brightness information according to the brightness corresponding relationship.

[0100] In summary, an embodiment of the present invention provides a device for detecting projection brightness, wherein the first image brightness information acquisition module controls the image acquisition unit to acquire the image projected by the projector onto the screen, i.e., the first image, and generates a corresponding image brightness value; the first brightness detection value acquisition module is used to control the brightness detection unit to perform actual brightness detection on a point in the screen; the brightness correspondence acquisition module is used to compare the detected brightness detection value with the generated image brightness value to generate a correspondence; the first image brightness detection value acquisition module is used to infer the brightness detection values ​​of other points on the screen according to the acquired correspondence, thereby obtaining the first image brightness detection value. In this way, the brightness detection unit can be controlled to perform only one brightness detection on the screen to obtain the overall brightness output by the projector to the screen, which can simplify the brightness detection process of the projector while ensuring the accuracy of the brightness detection.

[0101] Embodiment 5

[0102] Fig.11 4 is a schematic diagram of the structure of an electronic device provided in Embodiment 5 of the present invention. The electronic device 40 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0103] like Fig.11 As shown, the electronic device 40 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 40 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0104] A number of components in the electronic device 40 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 40 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0105] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a method for detecting projection brightness.

[0106] Embodiment 6

[0107] Embodiment 6 of the present invention provides a computer-executable storage medium having a computer program stored thereon, which, when executed by a processor, is used to execute a method for detecting projection brightness, the method comprising: controlling a projector to project onto a screen; controlling an image acquisition unit to acquire a first image of the screen, and acquiring first image brightness information in the first image; wherein the first image brightness information comprises a first image brightness value of a first detection point in the first image; controlling the brightness detection unit to detect a first brightness detection value of the first detection point; and acquiring a brightness correspondence between the first image brightness value and the first brightness detection value based on the first image brightness value and the first brightness detection value; and deriving a first image brightness detection value corresponding to the first image brightness information based on the brightness correspondence.

[0108] Optionally, when the program is executed by a processor, it can also be used to execute the projection brightness detection method provided by any embodiment of the present invention.

[0109] The computer storage medium of the embodiment of the present invention may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the above. The computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, device or device.

[0110] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0111] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the above.

[0112] Computer program code for performing the operations of the present invention may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0113] Embodiment 6

[0114] An embodiment of the present invention further provides a computer program product, including a computer program, which, when executed by a processor, implements a method for detecting projection brightness as provided in any embodiment of the present application.

[0115] In the process of implementation, the computer program product can be written in one or more programming languages ​​or a combination thereof to perform the computer program code of the present invention, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using an Internet service provider to connect through the Internet).

[0116] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for detecting projection brightness, applied to a projector detection device, characterized in that: The projector detection device comprises a projector, a brightness detection unit, an image acquisition unit and a control module; The projector, the brightness detection unit and the image acquisition unit are all connected to the control module; the detection method includes: Controlling the projector to project onto a screen; Controlling the image acquisition unit to acquire a first image of the curtain, and acquiring first image brightness information in the first image; wherein the first image brightness information includes a first image brightness value of a first detection point in the first image; Controlling the brightness detection unit to detect a first brightness detection value of the first detection point; According to the first image brightness value and the first brightness detection value, acquiring a brightness correspondence relationship between the first image brightness value and the first brightness detection value; The first image brightness detection value corresponding to the first image brightness information is derived according to the brightness correspondence.

2. The detection method according to claim 1, characterized in that: Controlling the image acquisition unit to acquire a first image of the curtain, and acquiring first image brightness information in the first image includes: The first image is divided into n*n sub-image units, and sub-image brightness information of multiple sub-image units is obtained; wherein the sub-image units include a first sub-image unit, the first sub-image unit includes the first detection point, and the brightness value of the first sub-image unit is the brightness value of the first image; n is a positive integer.

3. The detection method according to claim 2, characterized in that: The first sub-image unit is located at the center of the first image.

4. The detection method according to claim 2, characterized in that: Derivation of the first image brightness detection value corresponding to the first image brightness information according to the brightness correspondence includes: Derived sub-brightness detection values ​​corresponding to the plurality of sub-image units according to the brightness correspondence relationship; An average brightness value of the plurality of sub-brightness detection values ​​is obtained, and the average value is multiplied by the area of ​​the screen to obtain the first image brightness detection value.

5. The detection method according to claim 1, characterized in that: After the first image brightness detection value corresponding to the first image brightness information is derived according to the brightness corresponding relationship, the method further includes: Controlling the projector to project onto the screen again; Controlling the image acquisition unit to acquire a second image of the curtain, and acquiring second image brightness information in the second image; wherein the second image brightness information includes a second image brightness value of a second detection point in the second image; Controlling the brightness detection unit to detect a second brightness detection value of the second detection point; According to the second image brightness value and the second brightness detection value, acquiring a brightness correspondence relationship between the second image brightness value and the second brightness detection value; Derived the second image brightness detection value corresponding to the second image brightness information according to the brightness corresponding relationship; Calculate and obtain an average value of the first image brightness detection value and the second image brightness detection value.

6. The detection method according to claim 1, characterized in that: The control module and the image acquisition unit are integrated into an integrated device.

7. The detection method according to claim 6, characterized in that: The integrated device includes a smart phone.

8. A device for detecting projection brightness, characterized in that: The projection brightness detection device comprises: A projection output module, used to control the projector to project onto a screen; A first image brightness information acquisition module, used to control the image acquisition unit to acquire a first image of the curtain, and acquire first image brightness information in the first image; wherein the first image brightness information includes a first image brightness value of a first detection point in the first image; A first brightness detection value acquisition module, used for controlling the brightness detection unit to detect a first brightness detection value of the first detection point; a brightness correspondence acquisition module, configured to acquire a brightness correspondence between the first image brightness value and the first brightness detection value according to the first image brightness value and the first brightness detection value; The first image brightness detection value acquisition module is used to derive the first image brightness detection value corresponding to the first image brightness information according to the brightness corresponding relationship.

9. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the projection brightness detection method described in any one of claims 1-7.

10. A storage medium containing computer executable instructions, characterized in that: When the computer executable instructions are executed by a computer processor, they are used to perform the method for detecting projection brightness as described in any one of claims 1 to 6.

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