CN110086993B - Image processing method, image processing device, mobile terminal and computer readable storage medium - Google Patents

Image processing method, image processing device, mobile terminal and computer readable storage medium Download PDF

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Publication number
CN110086993B
CN110086993B CN201910359529.5A CN201910359529A CN110086993B CN 110086993 B CN110086993 B CN 110086993B CN 201910359529 A CN201910359529 A CN 201910359529A CN 110086993 B CN110086993 B CN 110086993B
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picture
image
current
image processing
preview interface
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CN110086993A (en
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王秀琳
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Nubia Technology Co Ltd
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Nubia Technology Co Ltd
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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
    • H04N23/62—Control of parameters via user interfaces
    • 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
    • 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
    • H04N23/67—Focus control based on electronic image sensor signals
    • 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
    • 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
    • H04N23/76—Circuitry for compensating brightness variation in the scene by influencing the image signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof

Abstract

The application discloses an image processing method, an image processing device, a mobile terminal and a computer readable storage medium, wherein the image processing method comprises the following steps: acquiring current shooting environment light information; comparing the current ambient light information value with a first preset threshold value, and determining whether to adjust the light incoming amount in the image previewing process according to the comparison result; acquiring a picture of a current preview interface; calculating and acquiring brightness information of the picture of the current preview interface; and comparing the brightness value of the picture of the current preview interface with a second preset threshold value, and determining whether to perform index enhancement processing on the picture according to the comparison result. According to the method and the device, through real-time adjustment of the preview interface parameters and processing of the preview image, the preview real-time performance is guaranteed, meanwhile, the better preview effect of a user in a dim light scene and an extremely dim light scene can be guaranteed, the user can adjust the shooting parameters through the preview effect, and therefore the better shooting effect is guaranteed to be obtained, and the user experience is better.

Description

Image processing method, image processing device, mobile terminal and computer readable storage medium
Technical Field
The present application relates to the field of image processing technologies, and in particular, to an image processing method and apparatus, a mobile terminal, and a computer-readable storage medium.
Background
When people take dark light, the quality of pictures is improved by means of subsequent image processing such as brightness improvement and the like so as to obtain a better shooting effect; the processing is generally complex for ensuring good effect, so that the processing is time-consuming and difficult to ensure real-time performance, and the effect of the later-stage image processing cannot be displayed in a preview interface in real time.
In addition, in some scenes with extremely dark light, the effect of displaying the picture on the preview interface in real time is also dark, so that the problems that a user cannot focus well and cannot adjust the shooting position and the shooting angle well are caused, and even after image processing and the like in a later period, the better shooting effect cannot be obtained, and the user experience is poor.
Disclosure of Invention
The invention aims to provide an image processing method, an image processing device, a mobile terminal and a computer readable storage medium, and aims to solve the problems of poor shooting effect and poor user experience in dark light shooting in the prior art.
In order to solve the above problem, the present application provides an image processing method, which is applied to a mobile terminal, and the image processing method includes the following steps:
acquiring current shooting environment light information;
comparing the current ambient light information value with a first preset threshold value, and determining whether to adjust the light incoming amount in the image previewing process according to the comparison result;
acquiring a picture of a current preview interface;
calculating and acquiring brightness information of the picture of the current preview interface;
and comparing the brightness information value of the picture of the current preview interface with a second preset threshold, and determining whether to perform exponential enhancement processing on the picture according to the comparison result.
The comparing the current ambient light information value with a first preset threshold, and determining whether to adjust the light entering amount in the image preview process according to the comparison result specifically includes: and when the current ambient light information value is smaller than a first preset threshold value, adjusting parameters in the image previewing process so as to enhance the light entering amount in the image previewing process.
When the current ambient light information value is smaller than a first preset threshold, adjusting parameters in the image preview process specifically includes: and adjusting the light sensitivity and the aperture size in the image previewing process.
The calculating and acquiring the brightness information of the picture of the current preview interface specifically includes: and calculating the histogram of the picture of the current preview interface, and acquiring the brightness information of the picture of the current preview interface.
The step of comparing the brightness information value of the current preview interface with a second preset threshold value and determining whether to exponentially enhance the image according to the comparison result specifically includes: and when the brightness information value of the current preview interface is smaller than a second preset threshold value, obtaining a transformation parameter for the histogram of the current preview image, and performing exponential enhancement on the image according to the transformation parameter.
Wherein, still include the step: and displaying the exponentially enhanced picture on a preview interface, and carrying out focusing treatment.
Wherein, including the step: when the user presses the shutter, the current picture automatically restores the parameter setting at the time of current shooting.
In order to solve the above problem, another embodiment of the present application further provides an image processing apparatus, which specifically includes:
the first acquisition unit is used for acquiring current shooting environment light information;
the first comparison unit is used for comparing the current ambient light information value with a first preset threshold value;
a first adjusting unit which determines whether to adjust the light entering amount in the image previewing process according to the comparison result of the first comparing unit;
the second acquisition unit is used for acquiring the picture of the current preview interface;
the calculation unit is used for calculating and acquiring the brightness information of the picture of the current preview interface;
the second comparison unit is used for comparing the brightness information value of the picture of the current preview interface with a second preset threshold value;
and the second adjusting unit is used for determining whether to carry out exponential enhancement processing on the image according to the comparison result of the second comparing unit.
In order to solve the above problem, an embodiment of the present application further provides a mobile terminal, where the mobile terminal includes:
a memory, a processor, and a computer program stored on the memory and executable on the processor;
the computer program, when being executed by the processor, realizes the steps of the method as set forth in any one of the above image processing methods.
In order to solve the above problem, an embodiment of the present application further provides a computer-readable storage medium, where a picture processing program is stored, and when the picture processing program is executed by a processor, the picture processing program implements the steps of the picture processing method according to any one of the above image processing methods.
Compared with the problems that the effect of pictures shot in an extremely dark light scene is not good and the user experience effect is not good in the prior art, the image processing method, the image processing device, the mobile terminal and the computer readable storage medium are provided, the image processing method obtains light information of the current environment in real time, compares the light information value of the current environment with a first preset threshold value, and determines whether to adjust the light incoming amount in the image previewing process according to the comparison result to obtain the pictures of the current previewing interface; calculating and acquiring brightness information of the picture of the current preview interface; the method and the device have the advantages that the brightness information value of the picture of the current preview interface is compared with the second preset threshold value, whether the image is subjected to index enhancement processing or not is determined according to the comparison result, the preview image is adjusted in real time through the interface parameters of the preview image and the preview image, the real-time property of the preview image is guaranteed, meanwhile, the good preview effect of shooting the image by a user in a dim light and extremely dim light scene can be guaranteed, the user can adjust the shooting parameters conveniently through the effect of previewing the image, the better shooting effect can be guaranteed, and the user experience is better.
According to the image processing device, the current shooting environment light information is obtained through the first obtaining unit, and the current environment light information value is compared with the first preset threshold value through the first comparing unit; the first adjusting unit determines whether to adjust the light entering amount in the image previewing process according to the comparison result of the first comparing unit; the second acquisition unit is used for acquiring the picture of the current preview interface; the calculation unit is used for calculating and acquiring the brightness information of the picture of the current preview interface; the second comparison unit compares the brightness value of the picture of the current preview interface with a second preset threshold value; and the second adjusting unit determines whether to carry out exponential enhancement processing on the image according to the comparison result of the second comparing unit. The image processing device can achieve real-time adjustment of parameters of the preview interface image by executing the image processing method, can guarantee good preview effect of pictures shot by a user under dim light and extremely dim light scenes while guaranteeing image preview real-time performance, and therefore the image processing device is convenient for the user to adjust shooting parameters through the shooting effect of the preview image, so that a good shooting effect is obtained, and the user experience is better.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
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 an image processing method according to an embodiment of the present application;
fig. 4 is a block diagram of an image processing apparatus according to an embodiment of the present application;
fig. 5 is a flowchart illustrating a process of taking a picture by using the image processing method according to the embodiment of the present application.
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) 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.
Fig. 3 is a flowchart of an image processing method according to an embodiment of the present disclosure. Once the method of this embodiment is triggered by a user, each flow step in this embodiment is automatically executed by the mobile terminal, 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 image processing method provided by the application specifically comprises the following steps:
step S310, acquiring current shooting environment light information;
specifically, a light information value under the current shooting environment is obtained through a light sensor, and the light information value specifically includes brightness information of light under the current environment.
Step S320, comparing the current ambient light information value with a first preset threshold value, and determining whether to adjust the light incoming amount in the image previewing process according to the comparison result;
specifically, the acquired light information value in the current environment is compared with a preset first preset threshold, and when the current environment light information value is smaller than the first preset threshold, step S3201 is executed to adjust parameters in the image preview process, such as adjusting light sensitivity, aperture size, and the like in the image preview process, so as to enhance the light entering amount in the image preview process; when the current ambient light information value is greater than or equal to the first preset threshold, the following step S390 is directly performed without adjusting parameters in the image preview process.
Step S3201, adjusting parameters in an image preview process;
specifically, the parameters in the image preview process include parameter information such as sensitivity and aperture size in the image preview process.
Step S330, acquiring a picture of the current preview interface;
step S340, calculating and acquiring brightness information of the picture of the current preview interface;
specifically, the step of calculating and acquiring brightness information of the picture of the current preview interface specifically includes:
step 3401, calculating a histogram of the current preview interface picture,
and step S3402, acquiring the brightness information of the picture of the current preview interface.
And step S350, comparing the brightness information value of the picture of the current preview interface with a second preset threshold value, and determining whether to perform exponential enhancement processing on the image according to the comparison result.
Specifically, the brightness information value of the picture of the current preview interface is compared with a second preset threshold, if the brightness information value of the picture of the current preview interface is smaller than the second preset threshold, a transformation parameter is obtained for the histogram of the current preview image, and the image is subjected to exponential enhancement processing according to the transformation parameter.
The transformation parameter formula is as follows:
α＝L2/li
Dsti,j＝MIN(MAX((Srci,j)α,0),max)
wherein L is2Is a second preset threshold;
lithe brightness information value of the picture of the current preview interface is obtained;
Srci,jtaking values for the pixel points in the ith row and the jth column in the picture of the current preview interface;
MAX is maximum value taking operation, and MIN is minimum value taking operation;
max is the maximum value corresponding to the current picture storage system (if the octal storage is adopted, max is 255).
Step S360, the enhanced picture is displayed on a preview interface of the terminal so as to obtain a better shooting effect of the current picture;
specifically, the enhanced picture is displayed on a preview interface of the terminal, and the user performs focusing, shooting angle adjustment, shooting position adjustment and other processing to obtain a better shooting effect of the current picture.
In step S370, the viewing interface updates the preview picture.
Step 380, when the user presses the shutter, the parameter setting of the current shot image is restored;
and step S390, repeating the predetermined image processing method in steps S310 to S380, and generating an updated preview image to be currently photographed.
Please refer to fig. 5, which is a flowchart illustrating a specific process of capturing a picture by the image processing method of the present application, and the specific process includes:
step S410, pressing the shutter of the camera;
step S420, recovering the parameters of the current image during shooting;
step S430, sending down the current image parameters;
step S440, generating a shot picture according to a preset image processing method in the steps S310 to S380;
and step S450, returning the shot picture to the user.
And finishing the shooting process of the whole image through the shooting steps.
The image processing method provided by the application acquires the light information of the current environment in real time according to the light information of the current environment, compares the light information value of the current environment with a first preset threshold value, and determines whether to adjust the light incoming amount in the image previewing process according to the comparison result to acquire the picture of the current previewing interface; calculating and acquiring brightness information of the picture of the current preview interface; the method and the device have the advantages that the brightness information value of the picture of the current preview interface is compared with the second preset threshold, whether the image is subjected to index enhancement processing or not is determined according to the comparison result, through real-time adjustment of parameters of the preview interface and processing of the preview image, the preview real-time performance is guaranteed, meanwhile, the better preview effect of a user in a dim light and extremely dim light scene can be guaranteed, the user can conveniently adjust shooting parameters through the preview effect, the better shooting effect is obtained, and the user experience is better.
By the implementation method, the user can set the corresponding shooting scene more intuitively, and better preview picture information of the corresponding scene image can be obtained in real time through the shooting scene image, so that the determined shooting scene can better accord with the intention of the user, and the user experience is improved.
Fig. 4 is a block diagram of an embodiment of an image processing apparatus according to another embodiment provided in the present application, where the image processing apparatus includes a first obtaining unit 401, a first comparing unit 402, a first adjusting unit 403, a second obtaining unit 404, a calculating unit 405, a second comparing unit 406, and a second adjusting unit 407, which are connected to each other and perform communication interaction. The functions of the unit modules are as follows:
the first obtaining unit 401 is configured to obtain light information of a current shooting environment;
the first comparing unit 402 is configured to compare the current ambient light information value with a first preset threshold;
the first adjusting unit 403, which determines whether to adjust the light entering amount in the image previewing process according to the comparison result obtained by the first comparing unit 402;
the second obtaining unit 404 is configured to obtain a picture of a current preview interface;
the calculating unit 405 is configured to calculate and obtain brightness information of the picture of the current preview interface;
the second comparing unit 406 is configured to compare the brightness information value of the picture of the current preview interface with a second preset threshold;
the second adjusting unit 407 is configured to determine whether to perform an exponential enhancement process on the image according to the comparison result obtained by the second comparing unit 406.
In an embodiment, the image processing apparatus further comprises a real-time restoring unit 408 for restoring the parameter settings of the currently captured image in real-time when the user presses the shutter.
In the image processing apparatus provided by the application, the first obtaining unit 401 obtains current shooting environment light information, and the first comparing unit 402 compares a current environment light information value with a first preset threshold; a first adjusting unit 403 determines whether to adjust the light entering amount of the image preview process according to the comparison result of the first comparing unit 402; the second obtaining unit 404 obtains a picture of the current preview interface; the calculating unit 405 calculates and acquires brightness information of the current preview interface picture; the second comparing unit 406 compares the brightness value of the picture of the current preview interface with a second preset threshold; the second adjusting unit 407 determines whether to perform exponential enhancement processing on the image according to the comparison result obtained by the second comparing unit 406. The image processing device can adjust the parameters of the preview interface image in real time by executing the image processing method, can ensure the real-time property of the preview image, and can also ensure the better preview effect of the picture shot by the user under the dim light and extremely dim light scenes, thereby using the image processing device, the user can conveniently adjust the shooting parameters through the shooting effect of the preview image, thereby obtaining the better shooting effect and better user experience.
The present application further provides a mobile terminal, the mobile terminal including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method as set forth in any one of steps S310-S380 in the embodiments described above.
The present application further provides a computer-readable storage medium, having a picture processing program stored thereon, where the picture processing program, when executed by a processor, implements the steps of the picture processing method as described in any one of steps S310-S380 in the above embodiments.
The application provides a computer readable storage medium stores the picture processing program, the picture processing program is realized by the image processing method when being executed by the processor, according to the image processing method obtains the light information of the current environment, through the real-time adjustment to the preview image interface parameter and the processing to the preview image, when guaranteeing the real-time property of the preview image, the better preview effect of the user shooting the image under the dim light and extremely dim light scenes can be guaranteed, the user is convenient for adjusting the shooting parameter through the effect of the preview image, thereby guaranteeing to obtain the better shooting effect, and the user experience is better.
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.
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 invention 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 invention.
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 (9)

1. An image processing method applied to a mobile terminal is characterized by comprising the following steps:
acquiring current shooting environment light information;
comparing the current ambient light information value with a first preset threshold value, and determining whether to adjust the light incoming amount in the image previewing process according to the comparison result;
acquiring a picture of a current preview interface;
calculating and acquiring brightness information of the picture of the current preview interface;
comparing the brightness information value of the picture of the current preview interface with a second preset threshold value, and determining whether to perform index enhancement processing on the picture according to the comparison result;
when the user presses the shutter, the current picture automatically restores the parameter setting at the time of current shooting.
2. The image processing method according to claim 1, wherein the comparing the current ambient light information value with a first preset threshold value and determining whether to adjust the light entering amount in the image preview process according to the comparison result specifically includes: and when the current ambient light information value is smaller than a first preset threshold value, adjusting parameters in the image previewing process so as to enhance the light entering amount in the image previewing process.
3. The image processing method according to claim 2, wherein when the current ambient light information value is smaller than a first preset threshold, adjusting parameters in the image preview process specifically includes: and adjusting the light sensitivity and the aperture size in the image previewing process.
4. The image processing method according to any one of claims 1 to 3, wherein the calculating and obtaining the brightness information of the picture of the current preview interface specifically includes: and calculating the histogram of the picture of the current preview interface, and acquiring the brightness information of the picture of the current preview interface.
5. The image processing method according to claim 4, wherein the comparing the brightness information value of the current preview interface with a second preset threshold value, and the determining whether to exponentially enhance the image according to the comparison result specifically includes: and when the brightness information value of the current preview interface is smaller than a second preset threshold value, obtaining a transformation parameter for the histogram of the current preview image, and performing exponential enhancement on the image according to the transformation parameter.
6. An image processing method as claimed in claim 5, characterized in that it further comprises the steps of: and displaying the exponentially enhanced picture on a preview interface, and carrying out focusing treatment.
7. An image processing apparatus characterized by comprising:
the first acquisition unit is used for acquiring current shooting environment light information;
the first comparison unit is used for comparing the current ambient light information value with a first preset threshold value;
a first adjusting unit which determines whether to adjust the light entering amount in the image previewing process according to the comparison result of the first comparing unit;
the second acquisition unit is used for acquiring the picture of the current preview interface;
the calculation unit is used for calculating and acquiring the brightness information of the picture of the current preview interface;
the second comparison unit is used for comparing the brightness information value of the picture of the current preview interface with a second preset threshold value;
the second adjusting unit is used for determining whether to carry out exponential enhancement processing on the image according to the comparison result of the second comparing unit;
and the real-time recovery unit is used for recovering the parameter setting of the currently shot image in real time when the user presses the shutter.
8. A mobile terminal, characterized in that the mobile terminal comprises:
a memory, a processor, and a computer program stored on the memory and executable on the processor;
the computer program, when executed by the processor, implementing the steps of the method of any one of claims 1 to 6.
9. A computer-readable storage medium, characterized in that a picture processing program is stored thereon, which, when executed by a processor, implements the steps of the image processing method according to any one of claims 1 to 6.
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