CN112449112A - Camera white balance adjusting method, mobile terminal and computer readable storage medium - Google Patents
Camera white balance adjusting method, mobile terminal and computer readable storage medium Download PDFInfo
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- CN112449112A CN112449112A CN202011296148.6A CN202011296148A CN112449112A CN 112449112 A CN112449112 A CN 112449112A CN 202011296148 A CN202011296148 A CN 202011296148A CN 112449112 A CN112449112 A CN 112449112A
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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
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
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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
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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
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
- H04N23/632—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
Abstract
The application provides a camera white balance adjusting method, which comprises the following steps: acquiring first color temperature data of the current environment where the mobile terminal is located through a color temperature sensor of the mobile terminal; when a camera of the mobile terminal is started, acquiring a corresponding first white balance parameter according to the first color temperature data, and loading the first white balance parameter; when an automatic white balance algorithm module of the mobile terminal is started, acquiring second color temperature data of the current environment where the mobile terminal is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; and adjusting the imaging effect of the camera based on the second white balance parameter. The application also provides a mobile terminal and a computer readable storage medium. In the method, the first color temperature data of the current environment is acquired through the color temperature sensor, and the first white balance parameter is adjusted in real time according to the first color temperature data, so that the difference between the first white balance parameter and the second white balance parameter is small.
Description
Technical Field
The present application relates to the field of image processing technologies, and in particular, to a method for adjusting a white balance of a camera, a mobile terminal, and a computer-readable storage medium.
Background
At present, a camera of a mobile terminal is widely used in daily life, a user may find that the white balance of a preview interface of the camera is inaccurate when the camera is started, and the white balance of the camera is stabilized after a short time. However, with different environments, the difference between the white balance when the camera is started and the white balance after the camera is stabilized in the environment is different, and the difference is very obvious in some environments, such as indoors or outdoors, and the whole preview interface may have obvious color cast at the moment of starting the camera.
In the prior art, the white balance value when the camera is started is a preset fixed value, and the white balance value cannot be adjusted in real time along with the change of the environment, so that the difference can bring bad experience to users.
Disclosure of Invention
The main objective of the present application is to provide a camera white balance adjustment method, a mobile terminal, and a computer-readable storage medium, which aim to obtain color temperature data of a current environment through a color temperature sensor to adjust a white balance parameter in real time according to the color temperature data, so that a difference between the white balance parameter when a camera is started and the white balance parameter after stabilization is small, and user experience is improved.
In order to achieve the above object, the present application provides a camera white balance adjustment method, which is applied to a mobile terminal, where the mobile terminal includes at least one camera, at least one color temperature sensor, and an automatic white balance algorithm module, and the camera white balance adjustment method includes:
acquiring first color temperature data of the current environment where the mobile terminal is located through the color temperature sensor;
when the camera is started, acquiring a corresponding first white balance parameter according to the first color temperature data, and loading the first white balance parameter;
when the automatic white balance algorithm module is started, acquiring second color temperature data of the current environment where the mobile terminal is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; and
and adjusting the imaging effect of the camera based on the second white balance parameter.
Optionally, the camera white balance adjustment method further includes:
and storing the first white balance parameters corresponding to the first color temperature data so that the mobile terminal can obtain the corresponding first white balance parameters according to the first color temperature data.
Optionally, the first white balance parameter and the second white balance parameter each include a red gain value and a blue gain value.
Optionally, the step of loading the first white balance parameter includes:
and loading the first white balance parameter to a photographing preview interface of the camera.
Optionally, after the step of loading the first white balance parameter, the method further includes:
and when a photographic picture is acquired, applying the first white balance parameter to the photographic picture.
Optionally, after the step of applying the first white balance parameter to the photographic picture, the method further includes:
and when the second white balance parameter is obtained through calculation, replacing the first white balance parameter with the second white balance parameter to apply to the photographic picture.
Optionally, the step of adjusting the imaging effect of the camera based on the second white balance parameter includes:
and when a photographic picture is acquired, applying the second white balance parameter to the photographic picture.
Optionally, the step of adjusting the imaging effect of the camera based on the second white balance parameter includes:
loading the second white balance parameter to a photographing preview interface of the camera;
and when a photographic picture is acquired, applying the second white balance parameter to the photographic picture.
The present application further provides a mobile terminal, the mobile terminal including: a touch screen; a processor; and the memory is connected with the processor and comprises a control instruction, and when the processor reads the control instruction, the mobile terminal is controlled to realize the camera white balance adjusting method.
The present application also provides a computer-readable storage medium having one or more programs, which are executed by one or more processors, to implement the above-described camera white balance adjustment method.
According to the camera white balance adjusting method, the mobile terminal and the computer readable storage medium, first color temperature data of the current environment where the mobile terminal is located are obtained through the color temperature sensor; secondly, when the camera is started, acquiring a corresponding first white balance parameter according to the first color temperature data, and loading the first white balance parameter; when the automatic white balance algorithm module is started, acquiring second color temperature data of the current environment where the mobile terminal is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; and finally, adjusting the imaging effect of the camera based on the second white balance parameter, so as to obtain first color temperature data of the current environment according to the color temperature sensor and adjust the first white balance parameter in real time according to the first color temperature data, so that the difference between the first white balance parameter when the camera is just started and the second white balance parameter when the automatic white balance algorithm module is started, namely the camera is started stably, is smaller, namely basically consistent, and the user experience is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Fig. 1 is a schematic diagram of a hardware structure of an optional mobile terminal for implementing various embodiments of the present application;
FIG. 2 is a schematic diagram of a communication network system of the mobile terminal shown in FIG. 1;
fig. 3 is a flowchart of a method for adjusting white balance of a camera according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
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 various components of the mobile terminal 100 are described in detail below 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.
Fig. 3 is a flowchart of an embodiment of a method for adjusting a white balance of a camera provided in the present application. Once the method of this embodiment is triggered by the user, the process in this embodiment is automatically executed by the mobile terminal 100, where each step may be executed sequentially according to the sequence in the flowchart, or may be executed simultaneously according to a plurality of steps in an actual situation, which is not limited herein. The mobile terminal 100 includes at least one camera, at least one color temperature sensor, and an automatic white balance algorithm module. The method for adjusting the white balance of the camera comprises the following steps:
step S310, obtaining first color temperature data of a current environment where the mobile terminal 100 is located through the color temperature sensor;
step S330, when the camera is started, acquiring a corresponding first white balance parameter according to the first color temperature data, and loading the first white balance parameter;
step S350, when the automatic white balance algorithm module is started, obtaining second color temperature data of the current environment where the mobile terminal 100 is located by using the automatic white balance algorithm module, and calculating a second white balance parameter based on the second color temperature data.
And step S370, adjusting the imaging effect of the camera based on the second white balance parameter.
With the above embodiment, first, the color temperature sensor is used to obtain first color temperature data of the current environment where the mobile terminal 100 is located; secondly, when the camera is started, acquiring a corresponding first white balance parameter according to the first color temperature data, and loading the first white balance parameter; when the automatic white balance algorithm module is started, acquiring second color temperature data of the current environment where the mobile terminal 100 is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; and finally, adjusting the imaging effect of the camera based on the second white balance parameter, so that first color temperature data of the current environment is obtained according to the color temperature sensor, and the first white balance parameter is adjusted in real time according to the first color temperature data, so that the difference between the first white balance parameter when the camera is started and the second white balance parameter when the automatic white balance algorithm module is started is smaller, namely, the first white balance parameter is basically consistent, and the user experience is improved.
The above steps will be specifically described with reference to specific examples.
In step S310, first color temperature data of a current environment in which the mobile terminal 100 is located is obtained through the color temperature sensor.
In this embodiment, the mobile terminal 100 is configured with at least one camera, at least one color temperature sensor, and an automatic white balance algorithm module. The first Color Temperature data may be a Color Temperature (CCT) of a current environment in which the mobile terminal 100 is located. Before the camera is started, the color temperature sensor may be started to acquire first color temperature data of a current environment where the mobile terminal 100 is located in real time.
In this embodiment, the color temperature sensor can accurately and stably operate in the image processing process of the mobile terminal 100, and can be used to detect the color temperature of the current environment of the mobile terminal 100, so that the color temperature of the photographed picture is consistent with the ambient light level. The concept of color temperature is an important part of the field of photography and light sources are always defined according to their color temperature, the most important of the properties of light for the photographer is the intensity of the light, and secondly the color temperature. The human eye can automatically adjust the white balance so that a piece of paper is white when viewed in the sun and white when viewed in the night room under light, but if we take the same type of film in both environments, the real difference will be displayed, which is why the film is sold in the sun and in the tungsten filament light.
In the present embodiment, the photographs taken under different light environments will have different color temperatures. That is, the color of the object may change under various light conditions. In this respect, white objects change most significantly: under the indoor tungsten filament light, a white object looks orange, and the scene shot under the illumination condition is yellow; however, if it is under blue sky, it will have a blue color tone. A scene photographed under such lighting conditions may be bluish. For these deviations, the human eye can automatically correct them. However, since the color temperature sensor itself does not have such a function, it is necessary to perform a certain correction of the output signal thereof, which is called white balance.
In this embodiment, the automatic white balance function of the camera of the mobile terminal 100 may automatically detect a color temperature change of natural light in a day, and automatically fine-tune the white balance of the camera according to the detection result to adapt to the color temperature change of a natural light source. However, the white balance parameter in the automatic white balance function of the existing camera is a fixed value, and cannot be adjusted in real time along with the change of the external environment, so that the color of the acquired photographic image may have obvious color cast distortion. Therefore, the first color temperature data of the current environment where the mobile terminal 100 is located is obtained through the color temperature sensor, so that the first white balance parameter of the camera can be adjusted in real time in the subsequent process according to the first color temperature data, and therefore it is ensured that the colors of the photographic images are basically not color-cast and not distorted.
In step S330, when the camera is started, a corresponding first white balance parameter is obtained according to the first color temperature data, and the first white balance parameter is loaded.
In this embodiment, taking the mobile terminal 100 as a mobile phone as an example, the camera may be a front camera or a rear camera of the mobile terminal 100. The mobile terminal 100 may control the activation of the camera by receiving an activation instruction of a user. The starting instruction may be a starting instruction that a user may trigger the camera by clicking the camera application, or pressing a designated physical key, or the like. The first white balance parameter may include a red gain value and a blue gain value.
In this embodiment, the first white balance parameters corresponding to the first color temperature data may be stored in advance, so that the mobile terminal 100 may obtain the corresponding first white balance parameters according to the first color temperature data. And acquiring each color temperature value in a common range, and then adjusting the first white balance parameter value to enable the white light to be in standard white, thereby acquiring and storing the first white balance parameter.
In this embodiment, when the camera is just started, that is, when the automatic white balance algorithm module has not yet been started, the first color temperature data of the current environment where the mobile terminal 100 is located may be obtained by the color temperature sensor, and then the corresponding first white balance parameter is obtained according to the first color temperature data and loaded.
In this embodiment, the step of loading the first white balance parameter includes:
and S3301, loading the first white balance parameter to a shooting preview interface of the camera.
In this embodiment, after the step of loading the first white balance parameter, the method further includes:
step S3302, when a photographic picture is acquired, applying the first white balance parameter to the photographic picture.
Specifically, when the camera is just started, the first white balance parameter may be loaded to a shooting preview interface of the camera, and then when a shooting picture is obtained, the first white balance parameter is applied to the shooting picture (for example, an automatic white balance algorithm module has not yet been started), so that a user obtains consistency between the shooting picture and the shooting preview interface, and meanwhile, speed of adjusting the white balance of the camera is increased, and adjustment efficiency is improved.
In step S350, when the automatic white balance algorithm module is started, second color temperature data of the current environment where the mobile terminal 100 is located is obtained by using the automatic white balance algorithm module, and a second white balance parameter is calculated based on the second color temperature data.
In this embodiment, the second white balance parameter may include a red gain value and a blue gain value, and it is understood that the red gain value and the blue gain value of the first white balance parameter may be the same as or different from the red gain value and the blue gain value of the second white balance parameter, or may be partially the same. When the red gain value and the blue gain value of the first white balance parameter are not identical, the difference between the red gain value and the blue gain value of the second white balance parameter is smaller.
Specifically, when the automatic white balance algorithm module is started, the automatic white balance algorithm module may be directly utilized to obtain second color temperature data of the current environment where the mobile terminal 100 is located, and a second white balance parameter is calculated based on the second color temperature data.
In this embodiment, the step of applying the first white balance parameter to the photographic picture further includes, after the step of applying the first white balance parameter to the photographic picture:
step S3501, when the second white balance parameter is obtained by calculation, replacing the first white balance parameter with the second white balance parameter to apply to the photographic picture.
In this embodiment, when the camera is just started and acquires a picture, the first white balance parameter is first applied to the picture, and then when the automatic white balance algorithm module is started, the second white balance parameter is calculated by the automatic white balance algorithm module and is used to replace the first white balance parameter, so as to apply the second white balance parameter to the acquired picture. That is, for a previously acquired photographic picture having a first white balance parameter, after calculating a second white balance parameter, the second white balance parameter may be used instead of the first white balance parameter to apply to the photographic picture already acquired, so that the quality of the acquired photographic picture is higher.
In step S370, the imaging effect of the camera is adjusted based on the second white balance parameter.
In this embodiment, after the second white balance parameter is calculated, the imaging effect of the camera may be adjusted based on the second white balance parameter. Because the difference between the first color temperature data of the current environment where the mobile terminal 100 is located obtained by the color temperature sensor and the second color temperature data of the current environment where the mobile terminal 100 is located obtained by the automatic white balance algorithm module is small, the first white balance parameter and the second white balance parameter are basically consistent, the difference between the shooting pictures obtained before and after the automatic white balance algorithm module is started is reduced, and the user experience is improved.
In this embodiment, the adjusting the imaging effect of the camera based on the second white balance parameter includes:
step S3701, when a photographic screen is acquired, applying the second white balance parameter to the photographic screen.
In this embodiment, after the second white balance parameter is obtained through calculation, when a photographic screen is acquired, the second white balance parameter is applied to the photographic screen to adjust the imaging effect of the camera based on the second white balance parameter. That is, after the second white balance parameter is obtained through calculation, the second white balance parameter may be applied to the photographic picture when the photographic picture is acquired subsequently, and the first white balance parameter is no longer used, so that the quality of the photographic picture is higher.
In this embodiment, the adjusting the imaging effect of the camera based on the second white balance parameter includes:
step 3702, loading the second white balance parameter to a shooting preview interface of the camera;
step S3703, when a photographic screen is acquired, applies the second white balance parameter to the photographic screen.
Specifically, after the second white balance parameter is obtained through calculation, when a photographic screen is not obtained, the second white balance parameter may be loaded to a photographing preview interface of the camera; when a photographic picture is acquired, the second white balance parameter may be applied to the photographic picture to adjust the imaging effect of the camera based on the second white balance parameter.
Through the above embodiment, the first color temperature data of the current environment where the mobile terminal 100 is located is obtained through the color temperature sensor; when the camera is started, acquiring a corresponding first white balance parameter according to the first color temperature data, and loading the first white balance parameter; when the automatic white balance algorithm module is started, acquiring second color temperature data of the current environment where the mobile terminal 100 is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; adjusting the imaging effect of the camera based on the second white balance parameter, so as to obtain first color temperature data of the current environment where the mobile terminal 100 is located through the color temperature sensor, and obtaining a corresponding first white balance parameter according to the first color temperature data when the camera is started; when the automatic white balance algorithm module is started, acquiring second color temperature data of the current environment where the mobile terminal 100 is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; and finally, adjusting the imaging effect of the camera based on the second white balance parameter, so that the first color temperature data of the current environment can be obtained according to the color temperature sensor, and the first white balance parameter can be adjusted in real time according to the first color temperature data, so that the difference between the first white balance parameter when the camera is just started and the second white balance parameter when the automatic white balance algorithm module is started, namely the camera is started stably, is smaller, namely basically consistent, the difference of obtaining a photographic picture before and after the automatic white balance algorithm module is started is reduced, and the user experience is improved.
Fig. 4 is a schematic structural component diagram of a mobile terminal 100 according to an embodiment of the present application, where the mobile terminal 100 includes at least one camera, at least one color temperature sensor, and an automatic white balance algorithm module, and the mobile terminal 100 includes: a touch panel 1071; a processor 110; the memory 109 is connected to the processor 110, the memory 109 contains a control instruction, and when the processor 110 reads the control instruction, the mobile terminal 100 is controlled to implement the following steps:
acquiring first color temperature data of the current environment where the mobile terminal is located through the color temperature sensor; when the camera is started, acquiring a corresponding first white balance parameter according to the first color temperature data, and loading the first white balance parameter; when the automatic white balance algorithm module is started, acquiring second color temperature data of the current environment where the mobile terminal is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; and adjusting the imaging effect of the camera based on the second white balance parameter.
Optionally, the camera white balance adjustment method further includes:
and storing the first white balance parameters corresponding to the first color temperature data so that the mobile terminal can obtain the corresponding first white balance parameters according to the first color temperature data.
Optionally, the first white balance parameter and the second white balance parameter each include a red gain value and a blue gain value.
Optionally, the step of loading the first white balance parameter includes:
and loading the first white balance parameter to a photographing preview interface of the camera.
Optionally, after the step of loading the first white balance parameter, the method further includes:
and when a photographic picture is acquired, applying the first white balance parameter to the photographic picture.
Optionally, after the step of applying the first white balance parameter to the photographic picture, the method further includes:
and when the second white balance parameter is obtained through calculation, replacing the first white balance parameter with the second white balance parameter to apply to the photographic picture.
Optionally, the step of adjusting the imaging effect of the camera based on the second white balance parameter includes:
and when a photographic picture is acquired, applying the second white balance parameter to the photographic picture.
Optionally, the step of adjusting the imaging effect of the camera based on the second white balance parameter includes:
loading the second white balance parameter to a photographing preview interface of the camera;
and when a photographic picture is acquired, applying the second white balance parameter to the photographic picture.
Acquiring first color temperature data of a current environment where the mobile terminal 100 is located through the color temperature sensor by the mobile terminal 100; when the camera is started, acquiring a corresponding first white balance parameter according to the first color temperature data, and loading the first white balance parameter; when the automatic white balance algorithm module is started, acquiring second color temperature data of the current environment where the mobile terminal 100 is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; adjusting the imaging effect of the camera based on the second white balance parameter, so as to obtain first color temperature data of the current environment where the mobile terminal 100 is located through the color temperature sensor, and obtaining a corresponding first white balance parameter according to the first color temperature data when the camera is started; when the automatic white balance algorithm module is started, acquiring second color temperature data of the current environment where the mobile terminal 100 is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; and finally, adjusting the imaging effect of the camera based on the second white balance parameter, so that the first color temperature data of the current environment can be obtained according to the color temperature sensor, and the first white balance parameter can be adjusted in real time according to the first color temperature data, so that the difference between the first white balance parameter when the camera is just started and the second white balance parameter when the automatic white balance algorithm module is started, namely the camera is started stably, is smaller, namely basically consistent, the difference of obtaining a photographic picture before and after the automatic white balance algorithm module is started is reduced, and the user experience is improved.
Embodiments of the present application also provide a computer-readable storage medium having one or more programs, where the one or more programs are executed by one or more processors to implement the following steps:
acquiring first color temperature data of a current environment where a mobile terminal is located through a color temperature sensor of the mobile terminal; when a camera of the mobile terminal is started, acquiring a corresponding first white balance parameter according to the first color temperature data, and loading the first white balance parameter; when an automatic white balance algorithm module of the mobile terminal is started, acquiring second color temperature data of the current environment where the mobile terminal is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; and adjusting the imaging effect of the camera based on the second white balance parameter.
Optionally, the camera white balance adjustment method further includes:
and storing the first white balance parameters corresponding to the first color temperature data so that the mobile terminal can obtain the corresponding first white balance parameters according to the first color temperature data.
Optionally, the first white balance parameter and the second white balance parameter each include a red gain value and a blue gain value.
Optionally, the step of loading the first white balance parameter includes:
and loading the first white balance parameter to a photographing preview interface of the camera.
Optionally, after the step of loading the first white balance parameter, the method further includes:
and when a photographic picture is acquired, applying the first white balance parameter to the photographic picture.
Optionally, after the step of applying the first white balance parameter to the photographic picture, the method further includes:
and when the second white balance parameter is obtained through calculation, replacing the first white balance parameter with the second white balance parameter to apply to the photographic picture.
Optionally, the step of adjusting the imaging effect of the camera based on the second white balance parameter includes:
and when a photographic picture is acquired, applying the second white balance parameter to the photographic picture.
Optionally, the step of adjusting the imaging effect of the camera based on the second white balance parameter includes:
loading the second white balance parameter to a photographing preview interface of the camera;
and when a photographic picture is acquired, applying the second white balance parameter to the photographic picture.
Acquiring first color temperature data of the current environment where the mobile terminal is located through the color temperature sensor through the computer-readable storage medium; when the camera is started, acquiring a corresponding first white balance parameter according to the first color temperature data, and loading the first white balance parameter; when the automatic white balance algorithm module is started, acquiring second color temperature data of the current environment where the mobile terminal is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; adjusting the imaging effect of the camera based on the second white balance parameter, so that first color temperature data of the current environment where the mobile terminal is located are obtained through the color temperature sensor, and when the camera is started, corresponding first white balance parameters are obtained according to the first color temperature data; when the automatic white balance algorithm module is started, acquiring second color temperature data of the current environment where the mobile terminal is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; and finally, adjusting the imaging effect of the camera based on the second white balance parameter, so that the first color temperature data of the current environment can be obtained according to the color temperature sensor, and the first white balance parameter can be adjusted in real time according to the first color temperature data, so that the difference between the first white balance parameter when the camera is just started and the second white balance parameter when the automatic white balance algorithm module is started, namely the camera is started stably, is smaller, namely basically consistent, the difference of obtaining a photographic picture before and after the automatic white balance algorithm module is started is reduced, and the user experience is improved.
The embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium herein stores one or more programs. Among other things, computer-readable storage media may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; the memory may also comprise a combination of memories of the kind described above.
The corresponding technical features in the above embodiments may be used with each other without causing contradiction in the schemes or without being implementable.
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 application are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A camera white balance adjusting method is applied to a mobile terminal, and is characterized in that the mobile terminal comprises at least one camera, at least one color temperature sensor and an automatic white balance algorithm module, and the camera white balance adjusting method comprises the following steps:
acquiring first color temperature data of the current environment where the mobile terminal is located through the color temperature sensor;
when the camera is started, acquiring a corresponding first white balance parameter according to the first color temperature data, and loading the first white balance parameter;
when the automatic white balance algorithm module is started, acquiring second color temperature data of the current environment where the mobile terminal is located by using the automatic white balance algorithm module, and calculating to obtain a second white balance parameter based on the second color temperature data; and
and adjusting the imaging effect of the camera based on the second white balance parameter.
2. The camera white balance adjustment method according to claim 1, further comprising:
and storing the first white balance parameters corresponding to the first color temperature data so that the mobile terminal can obtain the corresponding first white balance parameters according to the first color temperature data.
3. The camera white balance adjustment method according to claim 1, wherein the first white balance parameter and the second white balance parameter each include a red gain value and a blue gain value.
4. The camera white balance adjustment method according to claim 1, wherein the step of loading the first white balance parameter includes:
and loading the first white balance parameter to a photographing preview interface of the camera.
5. The camera white balance adjustment method according to claim 1, wherein after the step of loading the first white balance parameter, the method further comprises:
and when a photographic picture is acquired, applying the first white balance parameter to the photographic picture.
6. The camera white balance adjustment method according to claim 5, wherein after the step of applying the first white balance parameter to the photographic picture, further comprising:
and when the second white balance parameter is obtained through calculation, replacing the first white balance parameter with the second white balance parameter to apply to the photographic picture.
7. The camera white balance adjustment method according to claim 1, wherein the adjusting of the imaging effect of the camera based on the second white balance parameter includes:
and when a photographic picture is acquired, applying the second white balance parameter to the photographic picture.
8. The camera white balance adjustment method according to claim 1, wherein the adjusting of the imaging effect of the camera based on the second white balance parameter includes:
loading the second white balance parameter to a photographing preview interface of the camera;
and when a photographic picture is acquired, applying the second white balance parameter to the photographic picture.
9. A mobile terminal, characterized in that the mobile terminal comprises:
a touch screen;
a processor; and
a memory connected to the processor, the memory containing a control instruction, and when the processor reads the control instruction, controlling the mobile terminal to implement the camera white balance adjustment method according to any one of claims 1 to 8.
10. A computer-readable storage medium having one or more programs thereon, the one or more programs being executable by one or more processors to implement the camera white balance adjustment method according to any one of claims 1 to 8.
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