Photographic lighting device control method, photographic lighting device, and readable storage medium

Abstract

This application discloses a control method for photographic lighting equipment, a photographic lighting equipment, and a readable storage medium, relating to the field of mobile photographic lighting technology. The control method includes: acquiring a first light pulse signal from the photographic equipment; extracting a first pulse sequence vector corresponding to the first light pulse signal; identifying a target device identifier corresponding to the photographic equipment based on the first pulse sequence vector; determining target control parameters based on the target device identifier and a preset mapping relationship between device identifiers and control parameters; and controlling the operation of the photographic lighting equipment based on the target control parameters. This application aims to improve the compatibility between photographic lighting equipment and photographic equipment.

Description

Technical Field

[0001] This application relates to the field of photographic lighting equipment technology, and in particular to a photographic lighting equipment control method, a photographic lighting equipment, and a computer-readable storage medium. Background Technology

[0002] Current photographic equipment (such as smartphones) generally uses a "pre-flash" mechanism for metering and white balance calculations during shooting. However, for photographic lighting equipment (such as external flash units), traditional photosensitive triggers typically can only skip the first flash or control the flash through a simple delayed triggering method. However, the pre-flash pulse frequency, pulse width, and time interval between the pre-flash and the main flash (or master flash) vary significantly between different brands (and even different models of the same brand). Therefore, traditional universal photosensitive triggers have poor compatibility, often leading to premature or delayed triggering of the external flash, inconsistent flash timing, and an inability to achieve synchronized flashing with the photographic equipment.

[0003] The information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore may contain information that does not constitute prior art. Summary of the Invention

[0004] The main objective of this application is to provide a method for controlling photographic lighting equipment, a photographic lighting equipment, and a computer-readable storage medium, with the aim of improving the compatibility between photographic lighting equipment and photographic equipment.

[0005] To achieve the above objectives, this application provides a method for controlling photographic lighting equipment, applied to photographic lighting equipment, the method comprising: Acquire the first light pulse signal from the photographic device, and extract the first pulse sequence vector corresponding to the first light pulse signal; Based on the first pulse sequence vector, identify the target device identifier corresponding to the imaging device; The target control parameters are determined based on the target device identifier and the preset mapping relationship between the device identifier and the control parameters; The photographic lighting equipment is controlled to operate based on the target control parameters.

[0006] In one embodiment, the step of acquiring a first light pulse signal emitted by the photographic device and extracting a first pulse sequence vector corresponding to the first light pulse signal includes: The first optical signal emitted by the imaging device is collected and converted into a square wave form to obtain a first light pulse signal; The time intervals between pulses and the pulse widths of each pulse in the first optical pulse signal are arranged in chronological order to obtain the first pulse sequence vector.

[0007] In one embodiment, the step of identifying the target device identifier corresponding to the imaging device based on the first pulse sequence vector includes: The first pulse sequence vector is matched with a preset feature database to obtain the target device identifier corresponding to the photographic device; The feature database includes at least a variety of feature parameters and their mapping relationships with device identifiers, and the feature parameters include at least one of pulse width, time interval, and duty cycle.

[0008] In one embodiment, the step of matching the first pulse sequence vector with a preset feature database to obtain the target device identifier corresponding to the photographic device includes: The pulse width, the time interval, and / or duty cycle are matched with the pulse width, the time interval, and / or duty cycle in the feature database; If the pulse width, the time interval, and / or the duty cycle successfully match the feature database, the device identifier corresponding to the successfully matched feature parameter is determined as the target device identifier.

[0009] In one embodiment, the photographic lighting device includes a flash unit, and the target control parameters include pre-flash duration, forward flash duration, pre-flash pulse width, and forward flash pulse width. The step of controlling the operation of the photographic lighting device based on the target control parameters includes: The timing begins from the start time of the second light pulse signal emitted by the photographic device. When the cumulative duration reaches the pre-flash duration, the flash lamp is lit based on the pre-flash pulse width; When the cumulative duration reaches the positive flash duration, the flash lamp is turned on based on the positive flash pulse width.

[0010] In one embodiment, the photographic lighting equipment control method further includes: After entering the learning mode, the third pulse sequence vector corresponding to the third light pulse signal of the photographic device is obtained; At least one feature parameter of the photographic device is extracted from the third pulse sequence vector, and the feature parameter is associated with the device identifier of the photographic device and stored in a local feature database.

[0011] In one embodiment, after the step of associating the feature parameters with the device identifier of the photographic device and storing them in a local feature database, the method further includes: When the photographic device has an application corresponding to the photographic lighting device installed, in response to receiving a feature database update instruction, the feature parameters in the local feature database are sent to the photographic device so that the feature parameters in the local feature database are updated to the online feature database through the application. When the photographic equipment has an application corresponding to the photographic lighting equipment installed, in response to receiving a local feature database update instruction, the latest mapping relationship between the feature parameters and the device identifier is obtained from the photographic equipment and saved to the local feature database. The latest mapping relationship between the feature parameters and the device identifier of the photographic equipment is obtained from the online feature database by the application.

[0012] In one embodiment, the photographic lighting device includes a first photographic lighting device and a second photographic lighting device, wherein the distance between the first photographic lighting device and the photographic device is smaller than the distance between the second photographic lighting device and the photographic device; After the step of controlling the operation of the photographic lighting equipment based on the target control parameters, the method further includes: The target control parameters are sent to the second photographic lighting device via the first photographic lighting device; The second photographic lighting device is controlled to operate based on the target control parameters.

[0013] In addition, to achieve the above objectives, this application also provides a photographic lighting device, which includes at least an optical receiving module, a flash, and a control unit. The control unit includes at least a memory, a processor, and a computer program stored in the memory and executable on the processor. The computer program is configured to implement the steps of the photographic lighting device control method applied to the photographic lighting device as described above.

[0014] In addition, to achieve the above objectives, this application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the photographic lighting equipment control method described above.

[0015] In addition, to achieve the above objectives, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the photographic lighting equipment control method described above.

[0016] This application provides a method for controlling photographic lighting equipment. The method includes: firstly, acquiring a first light pulse signal from the photographic equipment; extracting a first pulse sequence vector corresponding to the first light pulse signal; then, identifying a target device identifier corresponding to the photographic equipment based on the first pulse sequence vector; further, determining target control parameters based on the target device identifier and a preset mapping relationship between device identifiers and control parameters; and finally, controlling the operation of the photographic lighting equipment based on the target control parameters. Thus, the photographic lighting equipment in this embodiment can identify its device identifier through the first pulse sequence vector corresponding to the first light pulse signal. Compared to traditional fixed flash control schemes, this embodiment flexibly controls the photographic lighting equipment based on control parameters corresponding to each different device identifier, achieving adaptive adjustment of the control parameters, enhancing the compatibility of the photographic lighting equipment, synchronizing the flash of the photographic lighting equipment with that of the photographic equipment, and improving the supplementary lighting effect. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a flowchart illustrating the photographic lighting equipment control method in an embodiment of this application; Figure 2 This is a schematic diagram of a feasible photographic device and photographic lighting device in an embodiment of this application; Figure 3 This is a schematic diagram comparing the light pulse signal emitted by the photographic device and the light pulse signal emitted by the photographic lighting device in the embodiments of this application. Figure 4 This is a schematic diagram of the system composition of a feasible photographic lighting device according to an embodiment of this application; Figure 5 This is a schematic diagram of the wireless control system of the photographic lighting equipment in the embodiments of this application; Figure 6 This is a schematic diagram of the hardware operating environment involved in the photographic lighting equipment control method in the embodiments of this application.

[0020] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0023] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0024] To improve the compatibility between photographic lighting equipment and photographic devices, this application provides a photographic lighting equipment control method. The method flow described below can be executed by the control unit of the photographic lighting equipment. (Refer to...) Figure 1 , Figure 1 This is a flowchart illustrating an embodiment of the photographic lighting equipment control method of this application. The photographic lighting equipment control method includes: Step S10: Obtain the first light pulse signal from the camera device and extract the first pulse sequence vector corresponding to the first light pulse signal; In this context, "photographic equipment" refers to electronic devices with photographic capabilities and equipped with a flash, such as smartphones. The first light pulse signal of a photographic equipment refers to the light signal emitted when the flash is operational. It typically includes at least one pre-flash and one direct flash, and its light signal is in pulse form, hence the name "first light pulse signal." The first pulse sequence vector corresponding to the first light pulse signal is used to characterize the features of this first light pulse signal. These features may include the pulse width and time interval of the direct flash and pre-flash.

[0025] Step S20: Identify the target device identifier corresponding to the imaging device based on the first pulse sequence vector; Because different photographic devices emit different light pulse signals during flash (for example, there are significant differences in the pre-flash pulse frequency, pulse width, and time interval between pre-flash and main flash in different brands (or even different models of the same brand) of mobile phones), the pulse sequence vectors corresponding to different photographic devices are also different. Therefore, based on the features represented by the first pulse sequence vector, the target device identifier corresponding to the photographic device currently emitting the first light pulse signal can be identified. The target device identifier can be the brand or model of the photographic device.

[0026] Step S30: Determine the target control parameters based on the target device identifier and the preset mapping relationship between the device identifier and control parameters; Step S40: Control the operation of the photographic lighting equipment based on the target control parameters.

[0027] After identifying the target device identifier of the photographic equipment, the corresponding target control parameters for the photographic lighting equipment can be queried based on the pre-set target device identifier and the pre-defined mapping relationship between device identifiers and control parameters. Because different photographic equipment exhibit different flash characteristics, once the target device identifier is identified, its corresponding flash characteristics can be directly determined based on that identifier. Furthermore, the mapping relationship between device identifiers and control parameters consists of pre-configured control parameters for the photographic lighting equipment (which may include the pulse width and interval for both forward and pre-flash) based on the characteristics of the light pulse signals of each photographic equipment. By controlling the operation of the photographic lighting equipment using these pre-configured control parameters, the flash of the photographic lighting equipment can be synchronized with the flash of the photographic equipment, avoiding excessively short or long flash delays and improving the fill light effect.

[0028] In one feasible embodiment, step S10, which involves acquiring a first light pulse signal emitted by the photographic device and extracting a first pulse sequence vector corresponding to the first light pulse signal, may include: Step S11: Acquire the first optical signal emitted by the imaging device, convert the first optical signal into a square wave form, and obtain the first light pulse signal; Step S12: Arrange the time intervals between each pulse and the pulse width of each pulse in the first optical pulse signal in chronological order to obtain the first pulse sequence vector.

[0029] It should be noted that photographic lighting equipment can be mechanically connected to photographic equipment, such as... Figure 2As shown, the photographic lighting device 05 is directly mounted on the back of the smartphone 01. It can directly acquire the first optical signal emitted by the flash 02 on the smartphone 01 through the optical receiving module 04, and convert the first optical signal into a square wave form through a preset high-speed comparator to obtain a first light pulse signal. The sampling frequency of the optical receiving module reaches the megahertz (MHz) level to ensure that microsecond (µs) pulse width differences in the first optical signal can be identified. It should also be noted that... Figure 2 In the diagram, 03 represents the camera of the photography equipment, and 06 represents the flash of the photography lighting equipment.

[0030] Specifically, to more intuitively represent the characteristics of the first pulse sequence vector, the time intervals between pulses and the pulse widths of each pulse in the first optical pulse signal need to be arranged in chronological order to obtain the first pulse sequence vector, such as... Figure 3 As shown in Figure A (the horizontal axis represents time T, and the vertical axis represents pulse voltage V), the first optical pulse signal includes two pulses, 07 and 08. The start time of pulse 07 is 09 and the end time is 10. The start time of pulse 08 is 11 and the end time is 12. Therefore, the pulse width of pulse 07 is equal to the duration between 09 and 10, the time interval between pulse 07 and pulse 08 is equal to the duration between 10 and 11, and the pulse width of pulse 08 is equal to the duration between 11 and 12. Finally, by arranging the pulse width of 07, the time interval, and the pulse width of 08 in sequence, the first pulse sequence vector is obtained.

[0031] It should be noted that in practical applications, the first optical pulse signal may include multiple pre-flashes, so the first pulse sequence vector may include multiple pulse widths. The pulse widths and time intervals in the first pulse sequence vector are arranged alternately, which can be represented as P = {w_1, t_1, w_2, t_2, ...}, where w_n refers to the duration (pulse width) of the nth pulse, and t_n refers to the time interval between the nth group of adjacent pulses.

[0032] In another feasible embodiment, the pulse width (e.g., the pulse width of the first pulse in the first pulse sequence vector (corresponding to the pre-flash pulse) can be used as a basis. Figure 3 (09-10) Identify the ambient brightness of the current photographic environment. The longer the pulse width, the lower the ambient brightness. The ambient brightness identified in this step can be used to control the flash brightness and / or pulse width of the photographic lighting equipment. It can be understood that the lower the ambient brightness, the higher the flash brightness and / or the longer the pulse width when the photographic lighting equipment turns on the flash.

[0033] Furthermore, in a feasible embodiment, step S20 of identifying the target device identifier corresponding to the imaging device based on the first pulse sequence vector may include: Step S21: Match the first pulse sequence vector with a preset feature database to obtain the target device identifier corresponding to the photography device; The feature database includes at least a variety of feature parameters and their mapping relationships with device identifiers. The feature parameters include at least one of pulse width, time interval, and duty cycle.

[0034] It is understandable that the first light pulse signal and the corresponding first pulse sequence vector emitted by the imaging equipment corresponding to different target device identifiers have different characteristics. The feature points are specifically reflected in the characteristic parameters of equal pulse width, time interval and duty cycle.

[0035] Specifically, step S21, which involves matching the first pulse sequence vector with a preset feature database to obtain the target device identifier corresponding to the imaging device, may include: Step S211: Match the pulse width, time interval, and / or duty cycle with the pulse width, time interval, and / or duty cycle in the feature database; In step S212, in response to a successful match between the pulse width, time interval, and / or duty cycle and the feature database, the device identifier corresponding to the successfully matched feature parameter is determined as the target device identifier.

[0036] In the process of matching pulse width, time interval and / or duty cycle with pulse width, time interval and / or duty cycle in the feature database, a single successful match can be used as the matching criterion, or multiple successful matches can be used as the matching criterion, depending on the type and number of feature parameters corresponding to the target device identifier in the feature database.

[0037] For example, the first light pulse signal and corresponding first pulse sequence vector emitted by a smartphone of brand A are characterized by continuous short pulses. This is reflected in the pulse width being lower than a preset width threshold and the presence of multiple pre-flash pulses. Furthermore, the time interval between the pre-flash and the main flash is equal to a specific value. Therefore, when the pulse width and time interval in the first pulse sequence vector match the pulse width and time interval corresponding to the smartphone of brand A in the feature database, the target device of the photographic equipment can be identified as A. Similarly, the first light pulse signal and corresponding first pulse sequence vector emitted by a smartphone of brand B are characterized by a specific pre-flash duty cycle. Therefore, when the duty cycle in the first pulse sequence vector matches the duty cycle corresponding to the smartphone of brand B in the feature database, the target device of the photographic equipment can be identified as B.

[0038] The feature database is a pre-established database representing the mapping relationship between various feature parameters and device identifiers. It can be stored locally on the photographic lighting equipment or on a cloud device that has a communication connection with the photographic lighting equipment.

[0039] Compared to traditional control strategies, the photographic lighting device of this application embodiment has the following advantages: First, it has high compatibility, automatically adapting to various mainstream photographic devices on the market through algorithms without the need for manual adjustment of complex delay parameters; second, it has strong anti-interference capabilities: because it matches the relevant characteristics of specific pulse signals, it can effectively filter out ambient light interference (such as the flash of other people's flashes or the flicker of indoor fluorescent lights); third, it has extremely low latency, compared to Bluetooth triggering, the photosensitive feature matching approach used in this application embodiment has a synchronization speed closer to real-time at the physical level, supporting the need for supplementary lighting at higher shutter speeds.

[0040] In one feasible embodiment, the photographic lighting device includes a flash unit, and the target control parameters include pre-flash duration, forward flash duration, pre-flash pulse width, forward flash pulse width, and brightness parameters. Step S40, which controls the operation of the photographic lighting device based on the target control parameters, may include: Step S41: Start timing from the start time of the second light pulse signal emitted by the camera device; Step S42: When the accumulated duration reaches the pre-flash duration, the flash is turned on based on the pre-flash pulse width and brightness parameters; Step S43: When the accumulated duration reaches the positive flash duration, the flash lamp is turned on based on the positive flash pulse width and brightness parameters.

[0041] It should be noted that steps S10 to S30 belong to the first stage, the purpose of which is to identify the target identifier of the current photographic equipment, so as to take targeted control strategies and determine the target control parameters; step S40 is the second stage, which is to control the flash of the photographic lighting equipment based on the determined target control parameters after the target identifier of the photographic equipment is determined, so as to achieve the effect of flash synchronization.

[0042] The target control parameters are determined based on the target device identifier of the photographic equipment. There is a one-to-one binding relationship between the two. When running based on the target control parameters, the control target is synchronized with the flash emitted by the photographic equipment itself. In order to achieve flash synchronization, fine control can be performed on parameters such as pre-flash duration, main flash duration, pre-flash pulse width, and main flash pulse width to compensate for the hardware delay of the circuit itself and achieve nanosecond-level flash synchronization accuracy.

[0043] by Figure 3To illustrate the principle of controlling a flash, the second light pulse signal must be synchronized with the flash emitted by the photographic lighting equipment to achieve flash synchronization. This requires ensuring that the pre-flash pulse width in the second light pulse signal is synchronized with the pulse width of the flash emitted by the photographic lighting equipment. It should be noted that the pulse width of the flash emitted by the photographic lighting equipment is typically shorter than the pulse width of the flash emitted by the photographic lighting equipment. Therefore, when activating the flash, simply align the center of the pulse width of the flash emitted by the photographic lighting equipment with the center of the pre-flash pulse width in the second light pulse signal. Figure 3 Starting from 09, the duration between 09 and the starting point of pulse 13 (not shown in the figure) is the pre-flash duration. The pre-flash phase begins from the starting point of pulse 13, and the width of pulse 13 is the pre-flash pulse width. The duration between 09 and the starting point of pulse 13 (not shown in the figure) is the main flash duration. The main flash phase begins from the starting point of pulse 14 (not shown in the figure), and the width of pulse 14 is the main flash pulse width. Additionally, the brightness parameter in the control parameters is used to control the height (pulse voltage) of pulses 13 and 14; the higher the brightness parameter, the greater the height.

[0044] In one feasible embodiment, the system composition of the photographic lighting device in this application embodiment is as follows: Figure 4 As shown, the optical receiving module 15 is used to collect optical signals emitted by the photographic equipment, the photoelectric conversion system 16 is used to convert the optical signals into square wave light pulse signals, the control system 18 is used to match the pulse sequence vector corresponding to the light pulse signal with the brand feature database 17, the power supply system is the same as the power supply, the control system 18 can control the flash driver 22 and the flash system 23 through the boost system 21, and the photographic lighting equipment also includes a USB-C (Universal Serial Bus-Type-C) 20 for wired communication and system upgrades with other devices, and includes a wireless flash control system 24 to provide remote control functions for users.

[0045] In one feasible embodiment, the photographic lighting equipment control method may further include: Step A10: After entering the learning mode, obtain the third pulse sequence vector corresponding to the third light pulse signal of the camera device; Step A20: Extract at least one feature parameter of the imaging device from the third pulse sequence vector, and associate the feature parameter with the device identifier of the imaging device and store it in the local feature database.

[0046] It should be noted that the learning mode for photographic lighting equipment refers to the following: when no relevant feature parameters of the photographic equipment exist in the local feature database, the third light pulse signal of the photographic equipment is actively acquired, and the corresponding third pulse sequence vector and various feature parameters are extracted. These are then associated with the device identifier of the current photographic equipment and stored to enrich the local feature database. Specifically, the photographic lighting equipment and the photographic equipment have already established a wired or wireless connection, and both enter the learning model synchronously. The photographic equipment first performs normal flash control, and then the photographic lighting equipment acquires the corresponding third light pulse signal, extracts the corresponding third pulse sequence vector, and associates at least one feature parameter (such as pulse width, pulse interval, duty cycle, etc.) with the target device identifier of the photographic equipment and stores it in the local feature database.

[0047] Furthermore, in a feasible embodiment, after step A20, which associates the feature parameters with the device identifier of the photographic device and stores them in a local feature database, the method may further include: Step A30: If the camera device has an application corresponding to the camera lighting device installed, in response to receiving the online feature database update instruction, the feature parameters in the local feature database are sent to the camera device so that the feature parameters in the local feature database are updated to the online feature database through the application.

[0048] This application also provides a method for updating an online feature database. Taking a smartphone as an example, the smartphone has an App (application) corresponding to the photography lighting equipment installed. The feature parameters in the local feature database of the photography lighting equipment can be obtained by entering the corresponding feature database update command in the App (e.g., clicking the corresponding function button), and then sent to the online feature database of the cloud device for use by more networked photography lighting equipment.

[0049] Step A40: If the camera device has an application corresponding to the camera lighting device installed, in response to receiving the local feature database update instruction, the latest mapping relationship between the feature parameters and the device identifier is obtained from the camera device and saved to the local feature database. The latest mapping relationship between the feature parameters and the device identifier of the camera device is obtained from the online feature database by the application.

[0050] On the other hand, if the photography equipment has a corresponding application installed, and the local feature database needs to be updated online, the latest mapping relationship between feature parameters and device identifiers can be obtained from the online feature database by entering the corresponding local update command in the App, making the photography lighting equipment compatible with more brands of photography equipment.

[0051] In one feasible embodiment, the photographic lighting equipment includes a first photographic lighting equipment and a second photographic lighting equipment, wherein the distance between the first photographic lighting equipment and the photographic equipment is smaller than the distance between the second photographic lighting equipment and the photographic equipment; After the step of controlling the operation of the photographic lighting equipment based on the target control parameters, the method may further include: Step B10: Send the target control parameters to the second photographic lighting device via the first photographic lighting device; Step B20: Control the operation of the second photographic lighting device based on the target control parameters.

[0052] Understandably, photographic lighting equipment can be a modular structure, including two or more lighting devices in different locations to provide supplemental lighting from various angles.

[0053] like Figure 5 As shown, the photographic lighting equipment may include a first photographic lighting device 05 and a second photographic lighting device 25, which can be connected via a 2.4GHz wireless control system to achieve synchronized flashing with conventional flash units equipped with 2.4GHz receivers. Through this wireless control system, the target control parameters configured on the first photographic lighting device 05 can be synchronized to the second photographic lighting device 25, which is located further away from the photographic equipment. This avoids the need for personnel to run to a distant or high position to reset the flash parameters. This improves shooting efficiency and overcomes the limitations of photographic lighting devices (such as external flash units) mounted on photographic equipment (such as smartphones) due to insufficient flash power caused by factors such as weight and size, enabling synchronized flashing with conventional flash units from a greater distance and with higher power.

[0054] It should be noted that this example is only for the purpose of assisting in understanding this application and does not constitute a limitation on the photographic lighting equipment control method of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0055] This application also provides a photographic lighting device, which includes at least an optical receiving module, a flash, and a control unit. The control unit includes at least one processor and a memory communicatively connected to the at least one processor. The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the photographic lighting device control method described in the above embodiments.

[0056] The following is for reference. Figure 6 It shows a schematic diagram of the structure of a control unit suitable for implementing the embodiments of this application. Figure 6The control unit shown is merely an example and should not be construed as limiting the functionality and scope of the embodiments of this application.

[0057] like Figure 6 As shown, the control unit may include a processing device 101 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 102 or a program loaded from storage device 103 into random access memory (RAM) 104. RAM 104 also stores various programs and data required for the operation of the control unit. The processing device 101, ROM 102, and RAM 104 are interconnected via bus 105. Input / output (I / O) interface 106 is also connected to the bus. Typically, the following systems can be connected to I / O interface 106: input devices 107 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 108 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 103 including, for example, magnetic tape, hard disks, etc.; and communication devices 109. Communication device 109 allows the control unit to communicate wirelessly or wiredly with other devices to exchange data. Although the diagram shows control units with various systems, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems may be implemented alternatively.

[0058] In particular, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 103, or installed from ROM 102. When the computer program is executed by processing device 101, it performs the functions defined in the methods of the embodiments of this application.

[0059] The photographic lighting device provided in this application, employing the photographic lighting device control method described in the above embodiments, can improve the compatibility between the photographic lighting device and the photographic equipment. Compared with the prior art, the beneficial effects of the photographic lighting device provided in this application are the same as those of the photographic lighting device control method described in the above embodiments, and other technical features of this photographic lighting device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0060] It should be understood that various parts of the embodiments of this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0061] The above description is merely a specific implementation of the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of this application should be determined by the protection scope of the above claims.

[0062] This application also provides a computer-readable storage medium storing a computer program that can run on a processor. The computer program is used to execute the photographic lighting equipment control method in the above embodiments.

[0063] The computer-readable storage medium provided in this application embodiment may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0064] The aforementioned computer-readable storage medium may be included in a photographic lighting device or may exist independently and not assembled into a photographic lighting device.

[0065] The aforementioned computer-readable storage medium carries one or more programs, which, when executed by the photographic lighting device, cause the photographic lighting device to: acquire a first light pulse signal from the photographic device; extract a first pulse sequence vector corresponding to the first light pulse signal; identify a target device identifier corresponding to the photographic device based on the first pulse sequence vector; determine target control parameters based on the target device identifier and a preset mapping relationship between device identifiers and control parameters; and control the operation of the photographic lighting device based on the target control parameters.

[0066] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "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 standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0067] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0068] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0069] The computer-readable storage medium provided in this application embodiment stores computer-readable program instructions for executing the above-described photographic lighting equipment control method, which can improve the compatibility between the photographic lighting equipment and the photographic equipment. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application embodiment are the same as the beneficial effects of the photographic lighting equipment control method provided in the above embodiments, and will not be repeated here.

[0070] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the photographic lighting equipment control method described above.

[0071] The computer program product provided in this application can improve the compatibility between photographic lighting equipment and photographic equipment. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as the beneficial effects of the photographic lighting equipment control method provided in the above embodiments, and will not be repeated here.

[0072] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent scope of this application.

Claims

1. A method for controlling photographic lighting equipment, characterized in that, The method for controlling photographic lighting equipment includes: Acquire the first light pulse signal from the photographic device, and extract the first pulse sequence vector corresponding to the first light pulse signal; Based on the first pulse sequence vector, identify the target device identifier corresponding to the imaging device; The target control parameters are determined based on the target device identifier and the preset mapping relationship between the device identifier and the control parameters; The photographic lighting equipment is controlled to operate based on the target control parameters.

2. The photographic lighting equipment control method as described in claim 1, characterized in that, The step of acquiring the first light pulse signal emitted by the photographic device and extracting the first pulse sequence vector corresponding to the first light pulse signal includes: The first optical signal emitted by the photographic equipment is collected and converted into a square wave form to obtain a first light pulse signal; The time intervals between pulses and the pulse widths of each pulse in the first optical pulse signal are arranged in chronological order to obtain the first pulse sequence vector.

3. The photographic lighting equipment control method as described in claim 2, characterized in that, The step of identifying the target device identifier corresponding to the imaging device based on the first pulse sequence vector includes: The first pulse sequence vector is matched with a preset feature database to obtain the target device identifier corresponding to the photographic device; The feature database includes at least a variety of feature parameters and their mapping relationships with device identifiers, and the feature parameters include at least one of pulse width, time interval, and duty cycle.

4. The photographic lighting equipment control method as described in claim 3, characterized in that, The step of matching the first pulse sequence vector with a preset feature database to obtain the target device identifier corresponding to the photographic device includes: The pulse width, the time interval, and / or duty cycle are matched with the pulse width, the time interval, and / or duty cycle in the feature database; If the pulse width, the time interval, and / or the duty cycle successfully match the feature database, the device identifier corresponding to the successfully matched feature parameter is determined as the target device identifier.

5. The photographic lighting equipment control method as described in claim 1, characterized in that, The photographic lighting equipment includes a flash unit, and the target control parameters include pre-flash duration, forward flash duration, pre-flash pulse width, forward flash pulse width, and brightness parameters. The step of controlling the operation of the photographic lighting equipment based on the target control parameters includes: The timing begins from the start time of the second light pulse signal emitted by the photographic device. When the cumulative duration reaches the pre-flash duration, the flash lamp is lit based on the pre-flash pulse width and the brightness parameter; When the cumulative duration reaches the positive flash duration, the flash lamp is lit based on the positive flash pulse width and the brightness parameter.

6. The photographic lighting equipment control method as described in claim 1, characterized in that, The photographic lighting equipment control method further includes: After entering the learning mode, the third pulse sequence vector corresponding to the third light pulse signal of the photographic device is obtained; At least one feature parameter of the photographic device is extracted from the third pulse sequence vector, and the feature parameter is associated with the device identifier of the photographic device and stored in a local feature database.

7. The photographic lighting equipment control method as described in claim 6, characterized in that, After the step of associating the feature parameters with the device identifier of the photographic device and storing them in a local feature database, the method further includes: When the photographic device has an application corresponding to the photographic lighting device installed, in response to receiving an online feature database update instruction, the feature parameters in the local feature database are sent to the photographic device so that the feature parameters in the local feature database are updated to the online feature database through the application. When the photographic equipment has an application corresponding to the photographic lighting equipment installed, in response to receiving a local feature database update instruction, the latest mapping relationship between the feature parameters and the device identifier is obtained from the photographic equipment and saved to the local feature database. The latest mapping relationship between the feature parameters and the device identifier of the photographic equipment is obtained from the online feature database by the application.

8. The photographic lighting equipment control method according to any one of claims 1 to 7, characterized in that, The photographic lighting equipment includes a first photographic lighting equipment and a second photographic lighting equipment, wherein the distance between the first photographic lighting equipment and the photographic equipment is smaller than the distance between the second photographic lighting equipment and the photographic equipment; After the step of controlling the operation of the photographic lighting equipment based on the target control parameters, the method further includes: The target control parameters are sent to the second photographic lighting device via the first photographic lighting device; The second photographic lighting device is controlled to operate based on the target control parameters.

9. A photographic lighting device, characterized in that, The photographic lighting device includes at least an optical receiving module, a flash, and a control unit. The control unit includes at least a memory, a processor, and a computer program stored in the memory and executable on the processor. The computer program is configured to implement the steps of the photographic lighting device control method as described in any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program for implementing a photographic lighting equipment control method, the program for implementing the photographic lighting equipment control method being executed by a processor to implement the steps of the photographic lighting equipment control method as claimed in any one of claims 1 to 8.

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