CN107968920B - Parameter determination method, electronic device and storage medium - Google Patents
Parameter determination method, electronic device and storage medium Download PDFInfo
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- CN107968920B CN107968920B CN201711216847.3A CN201711216847A CN107968920B CN 107968920 B CN107968920 B CN 107968920B CN 201711216847 A CN201711216847 A CN 201711216847A CN 107968920 B CN107968920 B CN 107968920B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/65—Control of camera operation in relation to power supply
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/71—Circuitry for evaluating the brightness variation
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Abstract
The embodiment of the invention discloses a parameter determination method, which comprises the following steps: the method comprises the steps that the electronic equipment obtains a first optical attribute parameter value of a first preview image obtained by carrying out image acquisition on a target environment in a first state; in the first state, a light supplement component arranged in the electronic equipment is in a closed state; acquiring a second optical attribute parameter value of a second preview image obtained by acquiring an image of the target environment in a second state, wherein in the second state, the light supplementing assembly is in an on state and supplements light with a preset light supplementing characteristic; and calculating to obtain a target light supplement characteristic aiming at the target environment based on the first optical attribute parameter value and the second optical attribute parameter value so as to enable the target light supplement characteristic to be matched with the target environment. The embodiment of the invention also discloses electronic equipment and a storage medium.
Description
Technical Field
The present invention relates to information processing technologies, and in particular, to a parameter determining method, an electronic device, and a storage medium.
Background
The existing electronic equipment generally has an image acquisition function, and can be provided with a flash lamp for improving the photographing quality, when the existing electronic equipment is used for photographing, a fixed current point can be provided for the flash lamp, and the flash lamp is driven to flash based on the fixed current.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a parameter determining method, an electronic device, and a storage medium to solve at least one problem in the prior art.
The technical scheme of the embodiment of the invention is realized as follows:
a first aspect of an embodiment of the present invention provides a parameter determining method, including:
the method comprises the steps that the electronic equipment obtains a first optical attribute parameter value of a first preview image obtained by carrying out image acquisition on a target environment in a first state; in the first state, a light supplement component arranged in the electronic equipment is in a closed state;
acquiring a second optical attribute parameter value of a second preview image obtained by acquiring an image of the target environment in a second state, wherein in the second state, the light supplementing assembly is in an on state and supplements light with a preset light supplementing characteristic;
and calculating to obtain a target light supplement characteristic aiming at the target environment based on the first optical attribute parameter value and the second optical attribute parameter value so as to enable the target light supplement characteristic to be matched with the target environment.
In the foregoing solution, the calculating a target fill-in light feature for the target environment based on the first optical property parameter value and the second optical property parameter value includes:
calculating a target characteristic value based on the first optical property parameter value and the second optical property parameter value;
and determining the ambient light characteristics of the target environment according to the target characteristic value so as to determine the target fill light characteristics matched with the ambient light characteristics.
In the foregoing solution, the calculating a target characteristic value based on the first optical property parameter value and the second optical property parameter value includes:
determining a first exposure feature of a first preview image corresponding to the first state based on the first optical attribute parameter value, and determining a second exposure feature of a second preview image corresponding to the second state based on the second optical attribute parameter value;
a target feature value is calculated based on the first exposure feature and the second exposure feature.
In the foregoing solution, the determining the ambient light characteristic of the target environment according to the target characteristic value includes:
and comparing the target characteristic value with a preset threshold value, and determining the ambient light characteristic of the target environment based on the comparison result.
In the above scheme, the target fill light feature represents fill light current information; correspondingly, the method further comprises:
and controlling the light supplement assembly to perform light supplement processing on the target environment according to the light supplement current information represented by the target light supplement characteristics.
In the above scheme, the method further comprises:
the second preview image is subjected to blocking processing to obtain at least two image blocks; wherein, the optical attribute parameter values corresponding to different image blocks are different;
calculating a target second optical attribute parameter value aiming at the second preview image based on the optical attribute parameter values corresponding to the at least two image blocks;
and controlling an image acquisition component to acquire an image of the target environment based on the target second optical attribute parameter value.
In the foregoing solution, the calculating a target second optical attribute parameter value for the second preview image based on the optical attribute parameter values corresponding to the at least two image blocks includes:
and weighting the optical attribute parameter values corresponding to the at least two image blocks, and calculating to obtain a target second optical attribute parameter value for the second preview image.
A second aspect of an embodiment of the present invention provides an electronic device, including:
the image acquisition assembly is used for acquiring images of a target environment to obtain a preview image;
the light supplementing assembly is used for supplementing light to a target environment;
a memory for storing a parameter determination program;
a processor for executing a stored parameter determination program in the memory to:
acquiring a first optical attribute parameter value of a first preview image obtained by carrying out image acquisition on a target environment in a first state; in the first state, a light supplement component arranged in the electronic equipment is in a closed state;
acquiring a second optical attribute parameter value of a second preview image obtained by acquiring an image of the target environment in a second state, wherein in the second state, the light supplementing assembly is in an on state and supplements light with a preset light supplementing characteristic;
and calculating to obtain a target light supplement characteristic aiming at the target environment based on the first optical attribute parameter value and the second optical attribute parameter value so as to enable the target light supplement characteristic to be matched with the target environment.
In the foregoing solution, the calculating a target fill-in light feature for the target environment based on the first optical property parameter value and the second optical property parameter value includes:
calculating a target characteristic value based on the first optical property parameter value and the second optical property parameter value;
and determining the ambient light characteristics of the target environment according to the target characteristic value so as to determine the target fill light characteristics matched with the ambient light characteristics.
In the foregoing solution, the calculating a target characteristic value based on the first optical property parameter value and the second optical property parameter value includes:
determining a first exposure feature of a first preview image corresponding to the first state based on the first optical attribute parameter value, and determining a second exposure feature of a second preview image corresponding to the second state based on the second optical attribute parameter value;
a target feature value is calculated based on the first exposure feature and the second exposure feature.
In the foregoing solution, the determining the ambient light characteristic of the target environment according to the target characteristic value includes:
and comparing the target characteristic value with a preset threshold value, and determining the ambient light characteristic of the target environment based on the comparison result.
In the above scheme, the target fill light feature represents fill light current information; correspondingly, the method further comprises:
and controlling the light supplement assembly to perform light supplement processing on the target environment according to the light supplement current information represented by the target light supplement characteristics.
In the foregoing solution, the processor further implements the following operations:
the second preview image is subjected to blocking processing to obtain at least two image blocks; wherein, the optical attribute parameter values corresponding to different image blocks are different;
calculating a target second optical attribute parameter value aiming at the second preview image based on the optical attribute parameter values corresponding to the at least two image blocks;
and controlling an image acquisition component to acquire an image of the target environment based on the target second optical attribute parameter value.
In the foregoing solution, the calculating a target second optical attribute parameter value for the second preview image based on the optical attribute parameter values corresponding to the at least two image blocks includes:
and weighting the optical attribute parameter values corresponding to the at least two image blocks, and calculating to obtain a target second optical attribute parameter value for the second preview image.
A third aspect of embodiments of the present invention provides a computer storage medium storing one or more programs, the one or more programs being executable by one or more processors to perform the method steps described above.
According to the parameter determination method, the electronic device and the storage medium provided by the embodiment of the invention, the first optical attribute parameter value of the first preview image obtained by image acquisition of the target environment in the first state and the second optical attribute parameter value of the second preview image obtained by image acquisition of the target environment in the second state can be obtained through the electronic device, and the target light supplement characteristic aiming at the target environment is calculated and obtained based on the first optical attribute parameter value and the second optical attribute parameter value, so that the target light supplement characteristic is matched with the target environment. That is to say, the electronic device according to the embodiment of the present invention can obtain a target fill-in light feature matched with the target environment based on the first optical attribute parameter value of the first preview image obtained in the state where the flash lamp is not turned on and the second optical attribute parameter value of the second preview image obtained in the state where the flash lamp is performing fill-in light, and further perform fill-in light processing on the target environment by using the target fill-in light feature. Here, because the target light filling characteristic of confirming is with target environment assorted, so, solved current flash lamp and carried out the driven problem with fixed current value, can ensure moreover based on this target light filling characteristic carry on under the prerequisite of the image quality that the light filling back gained, establish the basis for reducing the consumption of light filling subassembly and then promoting electronic equipment's duration, so, promoted electronic equipment's intellectuality, simultaneously, also promoted user experience.
Drawings
Fig. 1 is a schematic diagram of a hardware structure of an optional mobile terminal for implementing various embodiments of the present invention;
fig. 2 is a diagram of a communication network system architecture according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating an implementation of a parameter determination method according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a preview image according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.
The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.
Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The following describes each component of the mobile terminal in detail with reference to fig. 1:
the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).
WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.
The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.
The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.
The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.
Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.
The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.
The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.
Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.
In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based is described below.
Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present invention, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.
Specifically, the UE201 may be the terminal 100 described above, and is not described herein again.
The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Among them, the eNodeB2021 may be connected with other eNodeB2022 through backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.
The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).
The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.
Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.
Based on the above mobile terminal hardware structure and communication network system, the present invention provides various embodiments of the method.
Example one
The present embodiment provides a parameter determining method, which is applied to an electronic device, where the electronic device may be specifically the mobile terminal described above, such as a mobile phone, a tablet computer, a notebook computer, a palm computer, a personal digital assistant, and the like, or an image capturing device, such as a camera, and the present embodiment does not limit the type of the electronic device. Specifically, fig. 3 is a schematic flow chart of an implementation of a parameter determining method according to an embodiment of the present invention, and as shown in fig. 3, the parameter determining method includes:
step 301: the method comprises the steps that the electronic equipment obtains a first optical attribute parameter value of a first preview image obtained by carrying out image acquisition on a target environment in a first state; in the first state, a light supplement component arranged in the electronic equipment is in a closed state;
in this embodiment, the light supplement component may be specifically a flash lamp; the preview image may be an image corresponding to the target environment, which is presented on a display interface of the electronic device after the image acquisition of the target environment. Specifically, the first preview image is a preview image obtained after image acquisition is performed on the target environment in a state where the flash is turned off, that is, in a state where light supplement is not performed.
In this embodiment, the optical property parameter corresponding to the preview image may specifically be at least one of the following parameters: luminance, saturation, chrominance, etc. That is, in a specific example, the first optical property parameter value may be a luminance value, and the second optical property parameter may also be a luminance value. Further, the present embodiment takes the first optical property parameter value as a brightness value, and the second optical property parameter value is also a brightness value as an example for explanation; of course, in practical applications, the first optical property parameter value and the second optical property parameter value may also be specifically a chromaticity value or a saturation value, and the like, which is not limited in this embodiment.
Step 302: the electronic equipment acquires a second optical attribute parameter value of a second preview image obtained by acquiring an image of the target environment in a second state, wherein in the second state, the light supplementing assembly is in an on state and supplements light with a preset light supplementing characteristic;
in this embodiment, the second preview image is a preview image obtained after image acquisition is performed on the target environment in a state where the flash lamp is turned on and light is supplemented with a preset light supplementation feature, for example, image acquisition is performed on the target environment in a state where the flash lamp is preflashed to obtain a second preset image. Here, in practical applications, the preset fill-in light feature may specifically be a preset current, that is, the flash lamp is driven by the preset current to perform pre-flashing so as to fill in light for the target environment. Typically, the predetermined current is less than the maximum drive current of the flash lamp, for example, one third of the maximum drive current.
Step 303: and the electronic equipment calculates and obtains a target light supplement characteristic aiming at the target environment based on the first optical attribute parameter value and the second optical attribute parameter value so as to enable the target light supplement characteristic to be matched with the target environment.
That is to say, the electronic device can obtain a target fill-in light feature matched with the target environment based on a first optical attribute parameter value of a first preview image obtained in a state where the flash lamp is not turned on and a second optical attribute parameter value of a second preview image obtained in a state where the flash lamp is used for fill-in light, and then perform fill-in light processing on the target environment by using the target fill-in light feature. Here, because the target light filling characteristic of confirming is with target environment assorted, so, solved current flash lamp and carried out the driven problem with fixed current value, can ensure moreover based on this target light filling characteristic carry on under the prerequisite of the image quality that the light filling back gained, establish the basis for reducing the consumption of light filling subassembly and then promoting electronic equipment's duration, so, promoted electronic equipment's intellectuality, simultaneously, also promoted user experience.
Further, in practical application, the target light supplement feature may specifically represent light supplement current information (that is, drive current information), and may also be light supplement voltage information, which is not limited in this embodiment; correspondingly, the electronic device controls the light supplement assembly to perform light supplement processing on the target environment according to light supplement current information (or light supplement voltage information) represented by the target light supplement characteristic. For example, the fill-in current information is a target driving current, and correspondingly, the electronic device drives the flash lamp to flash based on the target driving current, so as to fill in light for the target environment.
In a specific example, the target fill light feature may be determined in the following manner, specifically:
the electronic equipment calculates a target characteristic value based on the first optical property parameter value and the second optical property parameter value; and then determining the ambient light characteristics of the target environment according to the target characteristic value, so as to determine the target fill light characteristics matched with the ambient light characteristics.
Further, in another specific example, the determining process of the target feature value may specifically include:
determining a first exposure feature of a first preview image corresponding to the first state based on the first optical attribute parameter value, and determining a second exposure feature of a second preview image corresponding to the second state based on the second optical attribute parameter value; here, the exposure characteristics may specifically characterize exposure time and exposure gain. And calculating a target feature value based on the first exposure feature and the second exposure feature. For example, in one embodiment, the target feature value is a ratio of the product of the exposure time and the exposure gain characterized by the second exposed feature to the product of the exposure time and the exposure gain characterized by the first exposed feature.
Further, in practical applications, after the target characteristic value is determined, the target characteristic value may be compared with a preset threshold, and then the ambient light characteristic of the target environment is determined based on the comparison result.
A specific example is given below to explain the present embodiment; specifically, the mobile phone acquires an image of a target environment in a state that a flash lamp is turned off to obtain a first preview image, and acquires a first brightness value of the first preview image; then, under the state that the flash lamp is started and pre-flashes, image acquisition is carried out on the target environment to obtain a second preview image, and a second brightness value of the second preview image is obtained; and further, inputting the first brightness value and the second brightness value into a preset calculation model to calculate a brightness reference value k, comparing the k obtained by calculation with a preset threshold range, and determining the target driving current of the flash lamp based on the comparison result.
Here, the step of calculating the luminance reference value k includes: determining an exposure time and an exposure gain corresponding to the first preview image based on the first brightness value; similarly, determining the exposure time and the exposure gain corresponding to the second preview image based on the second brightness value; multiplying the exposure time and the exposure gain corresponding to the first preview image to obtain a first numerical value, and multiplying the exposure time and the exposure gain corresponding to the second preview image to obtain a second numerical value, wherein the ratio of the first numerical value to the second numerical value is k.
Here, in practical applications, a preset threshold range may be preset, and the calculated k value is compared with the preset threshold range, for example, the preset threshold range is [ k1, k2], at this time, if the k value is greater than k2, it is considered that the current target environment is dark, that is, the brightness is low, at this time, the target driving current may be set to the maximum driving current, and then the flash lamp is driven by the maximum driving current to perform light supplement processing. Correspondingly, if the k value is less than k1, the current target environment is considered to be bright, that is, the brightness is high, at this time, the target driving current may be set to the minimum driving current, and then the flash lamp is driven by the minimum driving current to perform the light supplement processing. Still further, if k is between [ k1, k2], a corresponding target driving current between the minimum driving current and the maximum driving current can be obtained according to interpolation.
In this way, the method according to the embodiment of the present invention can obtain, by using the electronic device, the first optical attribute parameter value of the first preview image obtained by performing image acquisition on the target environment in the first state, obtain the second optical attribute parameter value of the second preview image obtained by performing image acquisition on the target environment in the second state, and calculate the target fill-in light feature for the target environment based on the first optical attribute parameter value and the second optical attribute parameter value, so that the target fill-in light feature is matched with the target environment. That is to say, the electronic device according to the embodiment of the present invention can obtain a target fill-in light feature matched with the target environment based on the first optical attribute parameter value of the first preview image obtained in the state where the flash lamp is not turned on and the second optical attribute parameter value of the second preview image obtained in the state where the flash lamp is performing fill-in light, and further perform fill-in light processing on the target environment by using the target fill-in light feature. Here, because the target light filling characteristic of confirming is with target environment assorted, so, solved current flash lamp and carried out the driven problem with fixed current value, can ensure moreover based on this target light filling characteristic carry on under the prerequisite of the image quality that the light filling back gained, establish the basis for reducing the consumption of light filling subassembly and then promoting electronic equipment's duration, so, promoted electronic equipment's intellectuality, simultaneously, also promoted user experience.
Example two
Based on the method described in the first embodiment, this embodiment provides an overexposure method, where in practical applications, when shooting with a flash, if the shooting background other than the shooting object is very dark, for example, the shooting background is black, at this time, if shooting a face, the face may be overexposed due to the dark background, thereby affecting the shooting effect. Therefore, in order to solve the problem of overexposure and improve the shooting effect of the image in the application scene, as shown in fig. 4, in this embodiment, a flash pre-flash may be used to obtain a brightness value of a shooting target (i.e., a target object) in a preview image, and obtain brightness values of other regions except the shooting target in the preview image, and then, weights are assigned to the brightness value of the shooting target and the brightness values of the other regions in the preview image according to a preset photometric weight value, and then, a weighted sum calculation is performed to obtain a target brightness value matched with the current scene, so that an image with a better effect may be obtained by shooting according to the target brightness value, thereby overcoming the defect of overexposure.
Specifically, the electronic device performs blocking processing on the second preview image to obtain at least two image blocks, for example, a first image block corresponding to a target object and a second image block composed of other areas except the first image block in the second preview image are obtained; the optical attribute parameter values corresponding to different image blocks are different, for example, the luminance values corresponding to different image blocks are different; and then, based on the optical attribute parameter values corresponding to the at least two image blocks, calculating to obtain a target second optical attribute parameter value for the second preview image, so as to control an image acquisition component (such as a camera) to perform image acquisition on the target environment based on the target second optical attribute parameter value. Here, the target second optical property parameter value is an average value calculated according to optical property parameter values of different image blocks, and the second optical property parameter value may be a detected value representing the overall brightness of the second preview image.
Here, if a person is photographed or a scene is photographed, the second preview image may be blocked according to the foreground or the background, because, in practical applications, when the background is dark, the probability of foreground overexposure is high, so, if it is desired to avoid the overexposure phenomenon, when the blocking is performed, the region easy to overexposure and the region difficult to overexposure may be placed in different image blocks, that is, the foreground image and the background image are placed in different image blocks, even, only two image blocks are obtained after the blocking, that is, the image block corresponding to the foreground image and the image block corresponding to the background image, so that the problem of overexposure is avoided to the maximum.
In this embodiment, after the electronic device determines the target second optical attribute parameter value, the exposure time and the exposure gain may be determined based on the target second optical attribute parameter value, and then image acquisition is performed based on the exposure time and the exposure gain corresponding to the target second optical attribute parameter value, so as to avoid an overexposure phenomenon of a foreground image, such as a human face.
In another specific example, the calculating a target second optical attribute parameter value for the second preview image based on the optical attribute parameter values corresponding to the at least two image blocks includes: and weighting the optical attribute parameter values corresponding to the at least two image blocks, and calculating to obtain a target second optical attribute parameter value for the second preview image. Continuing with fig. 4 as an example, at this time, the target luminance value is a1 × (the luminance value of the photographing target in the preview image) + a2 × (the luminance value of the region other than the photographing target in the preview image), where a1 and a2 are weights and the sum of the two is 1. Therefore, the determined target brightness value can maximally avoid overexposure of the shooting target.
EXAMPLE III
The present embodiment provides an electronic device, as shown in fig. 5, including:
the image acquisition component 51 is used for acquiring images of the target environment to obtain preview images;
the light supplement component 52 is used for supplementing light to the target environment;
a memory 53 for storing a parameter determination program;
a processor 54 for executing a stored parameter determination program in the memory to:
acquiring a first optical attribute parameter value of a first preview image obtained by carrying out image acquisition on a target environment in a first state; in the first state, a light supplement component arranged in the electronic equipment is in a closed state;
acquiring a second optical attribute parameter value of a second preview image obtained by acquiring an image of the target environment in a second state, wherein in the second state, the light supplementing assembly is in an on state and supplements light with a preset light supplementing characteristic;
and calculating to obtain a target light supplement characteristic aiming at the target environment based on the first optical attribute parameter value and the second optical attribute parameter value so as to enable the target light supplement characteristic to be matched with the target environment.
In practical applications, the fill-in light module 52, the memory 53 and the processor 54 may be connected by a bus.
In a specific example, the calculating a target fill-in light feature for the target environment based on the first optical property parameter value and the second optical property parameter value includes:
calculating a target characteristic value based on the first optical property parameter value and the second optical property parameter value;
and determining the ambient light characteristics of the target environment according to the target characteristic value so as to determine the target fill light characteristics matched with the ambient light characteristics.
In another specific example, the calculating a target characteristic value based on the first optical property parameter value and the second optical property parameter value includes:
determining a first exposure feature of a first preview image corresponding to the first state based on the first optical attribute parameter value, and determining a second exposure feature of a second preview image corresponding to the second state based on the second optical attribute parameter value;
a target feature value is calculated based on the first exposure feature and the second exposure feature.
In another specific example, the determining the ambient light characteristic of the target environment according to the target characteristic value includes:
and comparing the target characteristic value with a preset threshold value, and determining the ambient light characteristic of the target environment based on the comparison result.
In another specific example, the target fill light feature represents fill light current information; correspondingly, the method further comprises:
and controlling the light supplement assembly to perform light supplement processing on the target environment according to the light supplement current information represented by the target light supplement characteristics.
In another specific example, the processor 54 further implements the following operations:
the second preview image is subjected to blocking processing to obtain at least two image blocks; wherein, the optical attribute parameter values corresponding to different image blocks are different;
calculating a target second optical attribute parameter value aiming at the second preview image based on the optical attribute parameter values corresponding to the at least two image blocks;
and controlling an image acquisition component to acquire an image of the target environment based on the target second optical attribute parameter value.
In another specific example, the calculating a target second optical attribute parameter value for the second preview image based on the optical attribute parameter values corresponding to the at least two image blocks includes:
and weighting the optical attribute parameter values corresponding to the at least two image blocks, and calculating to obtain a target second optical attribute parameter value for the second preview image.
Here, it should be noted that: the description of the embodiment of the electronic device is similar to the description of the method, and has the same beneficial effects as the embodiment of the method, and therefore, the description is omitted. For technical details that are not disclosed in the embodiment of the electronic device of the present invention, those skilled in the art should refer to the description of the embodiment of the method of the present invention to understand that, for the sake of brevity, detailed description is not repeated here.
The present embodiments also provide a computer storage medium storing one or more programs executable by one or more processors to perform the steps of:
the method comprises the steps that the electronic equipment obtains a first optical attribute parameter value of a first preview image obtained by carrying out image acquisition on a target environment in a first state; in the first state, a light supplement component arranged in the electronic equipment is in a closed state;
acquiring a second optical attribute parameter value of a second preview image obtained by acquiring an image of the target environment in a second state, wherein in the second state, the light supplementing assembly is in an on state and supplements light with a preset light supplementing characteristic;
and calculating to obtain a target light supplement characteristic aiming at the target environment based on the first optical attribute parameter value and the second optical attribute parameter value so as to enable the target light supplement characteristic to be matched with the target environment.
In a specific example, the calculating a target fill-in light feature for the target environment based on the first optical property parameter value and the second optical property parameter value includes:
calculating a target characteristic value based on the first optical property parameter value and the second optical property parameter value;
and determining the ambient light characteristics of the target environment according to the target characteristic value so as to determine the target fill light characteristics matched with the ambient light characteristics.
In another specific example, the calculating a target characteristic value based on the first optical property parameter value and the second optical property parameter value includes:
determining a first exposure feature of a first preview image corresponding to the first state based on the first optical attribute parameter value, and determining a second exposure feature of a second preview image corresponding to the second state based on the second optical attribute parameter value;
a target feature value is calculated based on the first exposure feature and the second exposure feature.
In another specific example, the determining the ambient light characteristic of the target environment according to the target characteristic value includes:
and comparing the target characteristic value with a preset threshold value, and determining the ambient light characteristic of the target environment based on the comparison result.
In another specific example, the target fill light feature represents fill light current information; correspondingly, the method further comprises:
and controlling the light supplement assembly to perform light supplement processing on the target environment according to the light supplement current information represented by the target light supplement characteristics.
In another specific example, the method further comprises:
the second preview image is subjected to blocking processing to obtain at least two image blocks; wherein, the optical attribute parameter values corresponding to different image blocks are different;
calculating a target second optical attribute parameter value aiming at the second preview image based on the optical attribute parameter values corresponding to the at least two image blocks;
and controlling an image acquisition component to acquire an image of the target environment based on the target second optical attribute parameter value.
In another specific example, the calculating a target second optical attribute parameter value for the second preview image based on the optical attribute parameter values corresponding to the at least two image blocks includes:
and weighting the optical attribute parameter values corresponding to the at least two image blocks, and calculating to obtain a target second optical attribute parameter value for the second preview image.
It will be appreciated by those skilled in the art that the functions of the various components of the terminal in the embodiments of the present invention can be understood with reference to the foregoing description of the method for adjusting the focus area.
In the embodiment of the present invention, if the terminal is implemented in the form of a software functional module and sold or used as an independent product, the terminal may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
Accordingly, an embodiment of the present invention further provides a computer storage medium, in which a computer program is stored, the computer program being configured to execute the method for adjusting a focus area according to the embodiment of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. A method for parameter determination, the method comprising:
the method comprises the steps that the electronic equipment obtains a first optical attribute parameter value of a first preview image obtained by carrying out image acquisition on a target environment in a first state; in the first state, a light supplement component arranged in the electronic equipment is in a closed state;
acquiring a second optical attribute parameter value of a second preview image obtained by acquiring an image of the target environment in a second state, wherein in the second state, the light supplementing assembly is in an on state and supplements light with a preset light supplementing characteristic;
calculating a target light supplement characteristic aiming at the target environment based on the first optical attribute parameter value and the second optical attribute parameter value so as to enable the target light supplement characteristic to be matched with the target environment;
the calculating to obtain the target fill-in light characteristic for the target environment based on the first optical attribute parameter value and the second optical attribute parameter value includes:
calculating a target characteristic value based on the first optical property parameter value and the second optical property parameter value;
determining the ambient light characteristics of the target environment according to the target characteristic value so as to determine target fill light characteristics matched with the ambient light characteristics;
said calculating a target characteristic value based on said first and second optical property parameter values comprises:
determining a first exposure feature of a first preview image corresponding to the first state based on the first optical attribute parameter value, and determining a second exposure feature of a second preview image corresponding to the second state based on the second optical attribute parameter value;
calculating a target feature value based on the first exposure feature and the second exposure feature; the target feature value is a ratio of a product of an exposure time and an exposure gain characterized by the second exposed feature to a product of an exposure time and an exposure gain characterized by the first exposed feature.
2. The method of claim 1, wherein determining the ambient light characteristic of the target environment from the target characteristic value comprises:
and comparing the target characteristic value with a preset threshold value, and determining the ambient light characteristic of the target environment based on the comparison result.
3. The method of claim 1, wherein the target fill light feature represents fill light current information; correspondingly, the method further comprises:
and controlling the light supplement assembly to perform light supplement processing on the target environment according to the light supplement current information represented by the target light supplement characteristics.
4. The method of claim 1, further comprising:
the second preview image is subjected to blocking processing to obtain at least two image blocks; wherein, the optical attribute parameter values corresponding to different image blocks are different;
calculating a target second optical attribute parameter value aiming at the second preview image based on the optical attribute parameter values corresponding to the at least two image blocks;
and controlling an image acquisition component to acquire an image of the target environment based on the target second optical attribute parameter value.
5. The method of claim 4, wherein calculating a target second optical property parameter value for the second preview image based on the optical property parameter values corresponding to the at least two image blocks comprises:
and weighting the optical attribute parameter values corresponding to the at least two image blocks, and calculating to obtain a target second optical attribute parameter value for the second preview image.
6. An electronic device, comprising:
the image acquisition assembly is used for acquiring images of a target environment to obtain a preview image;
the light supplementing assembly is used for supplementing light to a target environment;
a memory for storing a parameter determination program;
a processor for executing a stored parameter determination program in the memory to:
acquiring a first optical attribute parameter value of a first preview image obtained by carrying out image acquisition on a target environment in a first state; in the first state, a light supplement component arranged in the electronic equipment is in a closed state;
acquiring a second optical attribute parameter value of a second preview image obtained by acquiring an image of the target environment in a second state, wherein in the second state, the light supplementing assembly is in an on state and supplements light with a preset light supplementing characteristic;
calculating a target light supplement characteristic aiming at the target environment based on the first optical attribute parameter value and the second optical attribute parameter value so as to enable the target light supplement characteristic to be matched with the target environment;
the calculating to obtain the target fill-in light characteristic for the target environment based on the first optical attribute parameter value and the second optical attribute parameter value includes:
calculating a target characteristic value based on the first optical property parameter value and the second optical property parameter value;
determining the ambient light characteristics of the target environment according to the target characteristic value so as to determine target fill light characteristics matched with the ambient light characteristics;
said calculating a target characteristic value based on said first and second optical property parameter values comprises:
determining a first exposure feature of a first preview image corresponding to the first state based on the first optical attribute parameter value, and determining a second exposure feature of a second preview image corresponding to the second state based on the second optical attribute parameter value;
calculating a target feature value based on the first exposure feature and the second exposure feature; the target feature value is a ratio of a product of an exposure time and an exposure gain characterized by the second exposed feature to a product of an exposure time and an exposure gain characterized by the first exposed feature.
7. The electronic device of claim 6, wherein determining the ambient light characteristic of the target environment from the target characteristic value comprises:
and comparing the target characteristic value with a preset threshold value, and determining the ambient light characteristic of the target environment based on the comparison result.
8. The electronic device of claim 6, wherein the target fill-in light feature represents fill-in current information; correspondingly, the processor further implements the following operations:
and controlling the light supplement assembly to perform light supplement processing on the target environment according to the light supplement current information represented by the target light supplement characteristics.
9. The electronic device of claim 6, wherein the processor is further configured to:
the second preview image is subjected to blocking processing to obtain at least two image blocks; wherein, the optical attribute parameter values corresponding to different image blocks are different;
calculating a target second optical attribute parameter value aiming at the second preview image based on the optical attribute parameter values corresponding to the at least two image blocks;
and controlling an image acquisition component to acquire an image of the target environment based on the target second optical attribute parameter value.
10. The electronic device of claim 9, wherein the calculating a target second optical property parameter value for the second preview image based on the optical property parameter values corresponding to the at least two image blocks comprises:
and weighting the optical attribute parameter values corresponding to the at least two image blocks, and calculating to obtain a target second optical attribute parameter value for the second preview image.
11. A computer storage medium, characterized in that the computer storage medium stores one or more programs executable by one or more processors to implement the method steps of any of claims 1 to 5.
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