CN112437234B - Flash lamp, and flash lamp control method and device - Google Patents

Flash lamp, and flash lamp control method and device Download PDF

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Publication number
CN112437234B
CN112437234B CN201910778097.1A CN201910778097A CN112437234B CN 112437234 B CN112437234 B CN 112437234B CN 201910778097 A CN201910778097 A CN 201910778097A CN 112437234 B CN112437234 B CN 112437234B
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flash
flash lamps
lamps
brightness
lens
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CN112437234A (en
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倪强
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70Circuitry for compensating brightness variation in the scene
    • H04N23/74Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00Special procedures for taking photographs; Apparatus therefor
    • G03B15/02Illuminating scene
    • G03B15/03Combinations of cameras with lighting apparatus; Flash units
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70Circuitry for compensating brightness variation in the scene
    • H04N23/71Circuitry for evaluating the brightness variation

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)

Abstract

The present disclosure relates to a flash, and a flash control method and apparatus, the method being applied to a terminal including a plurality of flash including a lens and a light source, the flash being configured such that light emitted from the light source transmitted through the lens is unevenly distributed, the method comprising: acquiring a flash lamp starting instruction; and controlling the flash lamp at the corresponding position to be started according to the flash lamp starting instruction. The method enhances the exposure value of the object to be highlighted under the dark light by controlling the starting quantity and the position of the flash lamps so as to highlight the object shooting object.

Description

Flash lamp, and flash lamp control method and device
Technical Field
The disclosure relates to the field of flashlights, and in particular relates to a flashlight, and a flashlight control method and device.
Background
Currently, for flashlights, the brightness is evenly distributed from the center. Therefore, when the flash lamp is used under the dim light, the light of the flash lamp reaches the target object uniformly, the brightness of the photographed target object can be integrally improved, and the brightness improvement of only the part to be highlighted in the target object can not be realized, so that the effect of improving the photographing quality under the dim light is limited.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a flash lamp, and a flash lamp control method and apparatus.
According to a first aspect of embodiments of the present disclosure, there is provided a flash comprising a lens and a light source, the flash being configured such that light emitted by the light source transmitted through the lens is unevenly distributed.
Optionally, the thickness of the lens is non-uniform.
According to a second aspect of the embodiments of the present disclosure, there is provided a flash control method, which is applied to a terminal,
the terminal includes a plurality of flash lamps including a lens and a light source, the flash lamps being configured such that light emitted by the light source transmitted through the lens is unevenly distributed, the method comprising: acquiring a flash lamp starting instruction; and controlling the flash lamp at the corresponding position to be started according to the flash lamp starting instruction.
Optionally, before acquiring the flash turn-on instruction, the method further includes: acquiring an ambient light parameter of an environment where a photographed target is located and a feature to be highlighted of the photographed target; and generating the flash lamp starting instruction according to the ambient light parameters of the environment where the shot target is positioned and the characteristics to be highlighted of the shot target.
Optionally, the acquiring the ambient light parameter of the environment where the photographed object is located includes: the ambient light parameter of the environment in which the photographed object is located is acquired by a sensor for detecting light.
Optionally, the acquiring the feature to be highlighted of the photographed object includes: and acquiring the information of the lighted virtual flash lamps in all virtual flash lamps on the display screen of the terminal, wherein all virtual flash lamps correspond to the positions of all flash lamps in the image of the shot target acquired by the camera of the terminal, which is displayed on the display screen of the terminal.
Optionally, the generating the flash lamp starting instruction according to the ambient light parameter of the environment where the photographed object is located and the feature to be highlighted of the photographed object includes: and determining the number and the positions of the flash lamps to be started according to the ambient light parameters and a preset conversion strategy and according to the characteristics to be highlighted of the shot target, and generating the flash lamp starting instruction according to the number and the positions of the flash lamps to be started.
Optionally, the preset conversion policy includes: n= (m-a)/(b.times.h), wherein n is the number of the flash lamps required to be turned on, m is the brightness required for photographing, a is the ambient brightness, b is the brightness after a single flash lamp is turned on, and h is the linear coefficient ratio between the brightness value after a plurality of flash lamps are turned on and the brightness value after a single flash lamp is turned on.
According to a third aspect of embodiments of the present disclosure, there is provided a flash control apparatus. The apparatus is applied to a terminal including a plurality of flash lamps including a lens and a light source, the flash lamps being configured such that light emitted from the light source transmitted through the lens is unevenly distributed, the apparatus comprising: a first acquisition unit configured to acquire a flash turn-on instruction; and the control unit is configured to control the flash lamp at the corresponding position to be started according to the flash lamp starting instruction.
Optionally, the apparatus further includes: the device comprises a first acquisition unit, a second acquisition unit and a generation unit, wherein the first acquisition unit is configured to acquire the environment light parameter of the environment where the shot object is located and the characteristic to be highlighted of the shot object before the first acquisition unit acquires the flash lamp starting instruction, and the generation unit generates the flash lamp starting instruction according to the environment light parameter of the environment where the shot object is located and the characteristic to be highlighted of the shot object.
Optionally, the second obtaining unit is configured to obtain the ambient light parameter of the environment where the photographed object is located in the following manner: the ambient light parameter of the environment in which the photographed object is located is acquired by a sensor for detecting light.
Optionally, the second obtaining unit is configured to obtain the feature to be highlighted of the photographed object in the following manner: and acquiring the information of the lighted virtual flash lamps in all virtual flash lamps on the display screen of the terminal, wherein all virtual flash lamps correspond to the positions of all flash lamps in the image of the shot target acquired by the camera of the terminal, which is displayed on the display screen of the terminal.
Optionally, the generating unit is configured to generate the flash lamp starting instruction according to an ambient light parameter of an environment where the photographed object is located and a feature to be highlighted of the photographed object in the following manner: and determining the number and the positions of the flash lamps to be started according to the ambient light parameters and a preset conversion strategy and according to the characteristics to be highlighted of the shot target, and generating the flash lamp starting instruction according to the number and the positions of the flash lamps to be started.
Optionally, the preset conversion policy includes: n= (m-a)/(b.times.h), wherein n is the number of the flash lamps required to be turned on, m is the brightness required for photographing, a is the ambient brightness, b is the brightness after a single flash lamp is turned on, and h is the linear coefficient ratio between the brightness value after a plurality of flash lamps are turned on and the brightness value after a single flash lamp is turned on.
According to a fourth aspect of the embodiments of the present disclosure, there is provided a flash control apparatus including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the above second aspect or the flash control method related to any one of the second aspects.
According to a fifth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, which when executed by a processor of a mobile terminal, enables the mobile terminal to perform the above second aspect or the flash control method related to any of the second aspects.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: the method enhances the exposure value of the object to be highlighted under the dark light by controlling the starting quantity and the position of the flash lamps so as to highlight the object shooting object.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic diagram of a flash lamp, according to an exemplary embodiment.
Fig. 2 is a flow chart illustrating a flash control method according to an exemplary embodiment.
Fig. 3 is a flowchart illustrating another flash control method according to an exemplary embodiment.
Fig. 4 is a block diagram illustrating a flash control apparatus according to an exemplary embodiment.
Fig. 5 is a block diagram illustrating another flash control apparatus according to an exemplary embodiment.
Fig. 6 is a block diagram illustrating yet another flash control apparatus according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
The present disclosure provides a flash. The flash includes a lens and a light source, the flash being configured such that light emitted by the light source transmitted through the lens is unevenly distributed. That is, the flash is configured such that light emitted from the light source is not uniformly distributed outward at the brightest center but brightest at one side after being transmitted through the lens, and a portion where brightness around the brightest portion gradually decreases becomes smaller. Referring to fig. 1, fig. 1 is a schematic diagram illustrating a flash lamp according to an exemplary embodiment. As shown in fig. 1, the flash 10 includes a lens 11 and a light source 12, and the flash 10 is configured such that light 13 emitted from the light source 12 transmitted through the lens 11 is unevenly distributed. Specifically, the thickness of the lens 11 is not uniform. Thus, the light emitted by the light source 12 is brighter after being transmitted through the thin portion of the lens 11 than after being transmitted through the thick portion of the lens 11, because the luminous flux is larger in the thin portion, so that the transmitted light 13 is not brightest at the center but is biased to one side, and the darker portion at the side becomes smaller, and the contrast between the darkness is better formed, and in fig. 1, the left circle represents the brightest portion of the transmitted light 13, and the darker portion at the left side of the circle is much smaller than the darker portion at the right side of the circle.
According to an embodiment of the present disclosure, in order to achieve the above-described effect, the flash may be further configured such that only half or more of the light transmitted by the normal flash through the lens is taken, so that the brightest side can also be obtained.
It will be appreciated that the brightest portion of the transmitted light at the side facilitates the use of the brightest portion for locally accentuating the light and the feature of the small portion of darkness at the side results in a better contrast.
The disclosure also provides a flash control method. The method is applied to a terminal comprising a plurality of flash lamps. As described above, the flash includes a lens and a light source, and the flash is configured such that light emitted from the light source transmitted through the lens is unevenly distributed. Referring to fig. 2, fig. 2 is a flowchart illustrating a flash control method according to an exemplary embodiment. As shown in fig. 2, the flash control method is used in the terminal, and includes the following steps S101 to S102. A terminal may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., and is a device that provides voice and/or data connectivity to a user, for example, a terminal may be a handheld device, an in-vehicle device, etc. that has a wireless connection function. Currently, some examples of terminals are: a smart phone (mobile phone), a Pocket computer (Pocket PersonalComputer, PPC), a palm computer, a personal digital assistant (PersonalDigital Assistant, PDA), a notebook computer, a tablet computer, a wearable device, or an in-vehicle device, etc. The terminal of the present disclosure is, for example, a mobile phone.
In step S101, a flash on instruction is acquired. According to the embodiment of the disclosure, a starting instruction of a flash lamp in a mobile phone is obtained.
In step S102, according to the flash turn-on command, the flash at the corresponding position is controlled to be turned on. According to the embodiment of the disclosure, corresponding flash lamp starting is controlled according to the starting instruction of the flash lamp in the mobile phone.
According to the embodiment of the present disclosure, the exposure value of the target object to be highlighted in the dark is enhanced by controlling the number and position of the flash to highlight the target photographic object. Further, with the above-described configuration of the flash, the partial exposure can be further enhanced to highlight the target photographic subject.
Referring to fig. 3, fig. 3 is a flowchart illustrating another flash control method according to an exemplary embodiment, according to an embodiment of the present disclosure. As shown in fig. 3, the method further comprises the following steps S201-S202 before step S101.
In step S201, an ambient light parameter of an environment in which a photographed object is located and a feature to be highlighted of the photographed object are acquired.
In step S202, the flash turn-on command is generated according to the ambient light parameter of the environment in which the photographed object is located and the feature to be highlighted of the photographed object.
In this embodiment, the flash on instruction is generated by first acquiring the ambient light parameter of the environment in which the target object to be photographed by the mobile phone is located and the portion of the target object to be highlighted.
According to an embodiment of the present disclosure, the acquiring an ambient light parameter of an environment in which a photographed object is located includes: the ambient light parameter of the environment in which the photographed object is located is acquired by a sensor for detecting light. In this embodiment, the ambient light parameters of the environment in which the target object to be photographed by the mobile phone is located are acquired by a sensor for detecting light in the mobile phone.
According to an embodiment of the present disclosure, the acquiring the feature to be highlighted of the photographed object includes: and acquiring the information of the lighted virtual flash lamps in all virtual flash lamps on the display screen of the terminal, wherein all virtual flash lamps correspond to the positions of all flash lamps in the image of the shot target acquired by the camera of the terminal, which is displayed on the display screen of the terminal. In this embodiment, a virtual flash corresponding to the position of all the flashes in the image of the photographed object captured by the camera of the terminal displayed on the display of the terminal is displayed on the display of the terminal, and the user can move the mobile phone and manually light the virtual flash to determine the feature to be highlighted of the photographed object, and acquire the feature to be highlighted of the photographed object by acquiring the information (number and position) of the virtual flashes that are lit.
According to an embodiment of the present disclosure, the generating the flash turn-on instruction according to an ambient light parameter of an environment in which the photographed object is located and a feature to be highlighted of the photographed object includes: and determining the number and the positions of the flash lamps to be started according to the ambient light parameters and a preset conversion strategy and according to the characteristics to be highlighted of the shot target, and generating the flash lamp starting instruction according to the number and the positions of the flash lamps to be started. In this embodiment, the number and positions of the flash lamps to be turned on are determined according to the ambient light parameters and a preset conversion policy, the number and positions of the flash lamps to be turned on are determined according to the feature to be highlighted of the photographed object, the number and positions of the flash lamps to be turned on are finally comprehensively determined, and the flash lamp turning-on instruction is generated according to the number and positions of the flash lamps to be turned on.
According to an embodiment of the present disclosure, the preset scaling strategy includes: n= (m-a)/(b.times.h), wherein n is the number of the flash lamps required to be turned on, m is the brightness required for photographing, a is the ambient brightness, b is the brightness after a single flash lamp is turned on, and h is the linear coefficient ratio between the brightness value after a plurality of flash lamps are turned on and the brightness value after a single flash lamp is turned on.
The embodiment of the disclosure also provides a flash lamp control device.
It can be appreciated that, in order to implement the above-mentioned functions, the flash control device provided in the embodiments of the present disclosure includes a hardware structure and/or a software module that perform respective functions. The disclosed embodiments may be implemented in hardware or a combination of hardware and computer software, in combination with the various example elements and algorithm steps disclosed in the embodiments of the disclosure. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation is not to be considered as beyond the scope of the embodiments of the present disclosure.
The embodiment discloses a flash lamp control device. The apparatus is applied to a terminal including a plurality of flash lamps including a lens and a light source, the flash lamps being configured such that light emitted from the light source transmitted through the lens is unevenly distributed. The apparatus is for performing the steps in the method embodiments described above.
Referring to fig. 4, fig. 4 is a block diagram illustrating a flash control apparatus according to an exemplary embodiment. As shown in fig. 4, the flash control apparatus 100 includes a first acquisition unit 101 and a control unit 102. The acquisition unit 101 is configured to acquire a flash on instruction. The control unit 102 is configured to control the flash on of the corresponding position according to the flash on instruction.
On the other hand, referring to fig. 5, fig. 5 is a block diagram illustrating another flash control apparatus according to an exemplary embodiment. As shown in fig. 5, the flash control apparatus 200 further includes a second acquisition unit 201 and a generation unit 202, as compared to the flash control apparatus 100, the second acquisition unit 201 and the generation unit 202 being configured such that, before the first acquisition unit 101 acquires a flash on instruction, the second acquisition unit 201 acquires an ambient light parameter of an environment in which a photographed target is located and a feature to be highlighted of the photographed target, and the generation unit 202 generates the flash on instruction according to the ambient light parameter of the environment in which the photographed target is located and the feature to be highlighted of the photographed target.
In yet another aspect, the second obtaining unit 201 is configured to obtain the ambient light parameter of the environment in which the photographed object is located in the following manner: the ambient light parameter of the environment in which the photographed object is located is acquired by a sensor for detecting light.
In yet another aspect, the second obtaining unit 201 is configured to obtain the feature to be highlighted of the photographed object in the following manner: and acquiring the information of the lighted virtual flash lamps in all virtual flash lamps on the display screen of the terminal, wherein all virtual flash lamps correspond to the positions of all flash lamps in the image of the shot target acquired by the camera of the terminal, which is displayed on the display screen of the terminal.
In yet another aspect, the generating unit 202 is configured to generate the flash on instruction according to an ambient light parameter of an environment in which the photographed object is located and a feature to be highlighted of the photographed object in the following manner: and determining the number and the positions of the flash lamps to be started according to the ambient light parameters and a preset conversion strategy and according to the characteristics to be highlighted of the shot target, and generating the flash lamp starting instruction according to the number and the positions of the flash lamps to be started.
In yet another aspect, the preset scaling strategy includes: n= (m-a)/(b.times.h), wherein n is the number of the flash lamps required to be turned on, m is the brightness required for photographing, a is the ambient brightness, b is the brightness after a single flash lamp is turned on, and h is the linear coefficient ratio between the brightness value after a plurality of flash lamps are turned on and the brightness value after a single flash lamp is turned on.
It will be appreciated that the specific manner in which the individual units perform the operations in relation to the apparatus of the above embodiments has been described in detail in relation to the embodiments of the method and will not be described in detail here.
The embodiment of the present disclosure also provides a flash control apparatus, and fig. 6 is a block diagram of another flash control apparatus 400 according to an exemplary embodiment. For example, apparatus 400 may be a mobile phone, computer, tablet device, personal digital assistant, or the like.
Referring to fig. 6, the apparatus 400 may include one or more of the following components: a processing component 402, a memory 404, a power component 406, a multimedia component 408, an audio component 410, an input/output (I/O) interface 412, a sensor component 414, and a communication component 416.
The processing component 402 generally controls the overall operation of the apparatus 400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 402 can include one or more modules that facilitate interaction between the processing component 402 and other components. For example, the processing component 402 may include a multimedia module to facilitate interaction between the multimedia component 408 and the processing component 402.
Memory 404 is configured to store various types of data to support the operation of apparatus 400. Examples of such data include instructions for any application or method operating on the apparatus 400, contact data, phonebook data, messages, pictures, videos, and the like. The memory 404 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
The power supply component 406 provides power to the various components of the apparatus 400. The power supply components 406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 400.
The multimedia component 408 includes a screen between the device 400 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the device 400 is in an operational mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 410 is configured to output and/or input audio signals. For example, the audio component 410 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 400 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 404 or transmitted via the communication component 416. In some embodiments, audio component 410 further includes a speaker for outputting audio signals.
The I/O interface 412 provides an interface between the processing component 402 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 414 includes one or more sensors for providing status assessment of various aspects of the apparatus 400. For example, the sensor assembly 414 may detect the on/off state of the device 400, the relative positioning of the components, such as the display and keypad of the device 400, the sensor assembly 414 may also detect the change in position of the device 400 or one of the components of the device 400, the presence or absence of user contact with the device 400, the orientation or acceleration/deceleration of the device 400, and the change in temperature of the device 400. The sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 414 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 416 is configured to facilitate communication between the apparatus 400 and other devices in a wired or wireless manner. The apparatus 400 may access a wireless network based on a communication standard, such as WiFi,3G or 4G, or a combination thereof. In one exemplary embodiment, the communication component 416 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 400 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.
In an exemplary embodiment, a non-transitory computer-readable storage medium is also provided, such as memory 404, including instructions executable by processor 420 of apparatus 400 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
The disclosed embodiments also provide a non-transitory computer-readable storage medium, which when executed by a processor of a mobile terminal, enables the mobile terminal to perform the flash control method according to the above embodiments.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (11)

1. The flash lamp is characterized by comprising a plurality of flash lamps, a lens and a light source, wherein the thickness of the lens is uneven; the flash is configured such that light emitted from the light source transmitted through the lens is brightest at one side of the lens, and a portion where brightness gradually decreases at one side of the brightest is larger than a portion where brightness gradually decreases at the other side of the brightest;
based on the flash control instruction, a corresponding number of the plurality of flash lamps, flash lamps at corresponding positions, are turned on.
2. A flash control method is characterized in that the method is applied to a terminal including a plurality of flash lamps including a lens and a light source, the flash lamps being configured such that light emitted from the light source transmitted through the lens is brightest at one side of the lens, and a portion where brightness gradually decreases at one side of the brightest is larger than a portion where brightness gradually decreases at the other side of the brightest,
the method comprises the following steps:
acquiring a flash lamp starting instruction;
according to the flash lamp starting instruction, controlling the flash lamp at the corresponding position to be started;
before acquiring the flash turn-on instruction, the method further includes:
acquiring an ambient light parameter of an environment where a photographed target is located and a feature to be highlighted of the photographed target;
determining the number and the positions of the flash lamps to be started according to the ambient light parameters and a preset conversion strategy and according to the characteristics to be highlighted of the shot target;
and generating the flash lamp starting instruction according to the quantity and the positions of the flash lamps required to be started.
3. The flash control method according to claim 2, wherein the acquiring the ambient light parameter of the environment in which the photographed object is located includes: the ambient light parameter of the environment in which the photographed object is located is acquired by a sensor for detecting light.
4. The flash control method according to claim 2, wherein the acquiring the feature to be highlighted of the photographed object includes: and acquiring the information of the lighted virtual flash lamps in all virtual flash lamps on the display screen of the terminal, wherein all virtual flash lamps correspond to the positions of all flash lamps in the image of the shot target acquired by the camera of the terminal, which is displayed on the display screen of the terminal.
5. The flash control method according to claim 2, wherein the preset scaling strategy comprises:
n= (m-a)/(b.times.h), wherein n is the number of the flash lamps required to be turned on, m is the brightness required for photographing, a is the ambient brightness, b is the brightness after a single flash lamp is turned on, and h is the linear coefficient ratio between the brightness value after a plurality of flash lamps and the brightness value after a single flash lamp is turned on.
6. A flash control apparatus is characterized in that the apparatus is applied to a terminal including a plurality of flash lamps including a lens and a light source, the flash lamps being configured such that light emitted from the light source transmitted through the lens is brightest at one side of the lens, and a portion where brightness gradually decreases at one side of the brightest is larger than a portion where brightness gradually decreases at the other side of the brightest,
the device comprises:
a first acquisition unit configured to acquire a flash turn-on instruction;
the control unit is configured to control the flash lamp at the corresponding position to be started according to the flash lamp starting instruction;
the apparatus further comprises:
the second acquisition unit and the generation unit are configured to acquire an ambient light parameter of an environment where a shot target is located and a feature to be highlighted of the shot target before the first acquisition unit acquires a flash lamp starting instruction, determine the number and positions of flash lamps to be started according to the ambient light parameter and a preset conversion strategy and according to the feature to be highlighted of the shot target, and generate the flash lamp starting instruction according to the number and positions of flash lamps to be started.
7. The flash control apparatus according to claim 6, wherein the second acquisition unit is configured to acquire the ambient light parameter of the environment in which the subject is located by: the ambient light parameter of the environment in which the photographed object is located is acquired by a sensor for detecting light.
8. The flash control apparatus according to claim 6, wherein the second acquisition unit is configured to acquire the feature to be highlighted of the photographed object in such a manner that: and acquiring the information of the lighted virtual flash lamps in all virtual flash lamps on the display screen of the terminal, wherein all virtual flash lamps correspond to the positions of all flash lamps in the image of the shot target acquired by the camera of the terminal, which is displayed on the display screen of the terminal.
9. The flash control apparatus of claim 6, wherein the preset scaling strategy comprises:
n= (m-a)/(b.times.h), wherein n is the number of the flash lamps required to be turned on, m is the brightness required for photographing, a is the ambient brightness, b is the brightness after a single flash lamp is turned on, and h is the linear coefficient ratio between the brightness value after a plurality of flash lamps and the brightness value after a single flash lamp is turned on.
10. A flash control apparatus, the apparatus comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to: the flash control method according to any one of claims 2 to 5 is performed.
11. A non-transitory computer readable storage medium, which when executed by a processor of a mobile terminal, causes the mobile terminal to perform the flash control method of any one of claims 2 to 5.
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