WO2020134789A1 - 移动终端及其屏幕亮灭的控制方法、计算机存储介质 - Google Patents
移动终端及其屏幕亮灭的控制方法、计算机存储介质 Download PDFInfo
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- WO2020134789A1 WO2020134789A1 PCT/CN2019/120684 CN2019120684W WO2020134789A1 WO 2020134789 A1 WO2020134789 A1 WO 2020134789A1 CN 2019120684 W CN2019120684 W CN 2019120684W WO 2020134789 A1 WO2020134789 A1 WO 2020134789A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
- H04M1/72439—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for image or video messaging
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72484—User interfaces specially adapted for cordless or mobile telephones wherein functions are triggered by incoming communication events
Definitions
- the present application belongs to the technical field of mobile communication, and particularly relates to a mobile terminal and a control method for turning on and off its screen, and a computer storage medium.
- the screen size of smart mobile communication devices is getting larger and larger.
- the current method is to set a distance sensor in the smart phone, and use the distance sensor to sense the user's closeness or distance, so as to realize the function of sticking the face off when calling.
- the present application provides a mobile terminal, a method for controlling the screen to turn on and off, and a computer storage medium, which can improve the efficiency of controlling the screen to turn off.
- the present application provides a control method for turning the screen on and off, including:
- the present application also provides a computer storage medium that stores a control program for turning on and off the screen of the mobile terminal.
- the control program for turning on and off the screen of the mobile terminal is executed by a processor, the following steps are implemented:
- the present application also provides a mobile terminal, the mobile terminal includes: a memory, a processor, and a control program that is stored on the memory and can run on the processor, and the screen of the mobile terminal turns on and off,
- the control program for turning on and off the screen of the mobile terminal is executed by the processor, the following steps are implemented:
- the present application discloses a mobile terminal, a method for controlling the screen to turn on and off, and a computer storage medium.
- the pixel difference rate of the user's image is calculated to determine the distance between the user and the screen, and the function of a simulated distance sensor is realized to control the screen on and off during the call.
- the hardware cost of the mobile terminal is reduced, the product competitiveness is improved, and the thin design of the mobile device is facilitated, thereby improving the user experience.
- FIG. 1 is a flowchart of a control method for turning on and off the screen of a mobile terminal according to an embodiment of the present application
- FIG. 2 is a flowchart of a method for controlling lighting according to a pixel difference rate according to an embodiment of the present application
- FIG. 3 is a structural block diagram of a mobile terminal according to an embodiment of the present application.
- a control method for turning on and off the screen of a mobile terminal including:
- each of the sub-image blocks includes a plurality of pixel units, and each pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and a calculation formula of the pixel difference rate of each sub-image block for:
- ⁇ represents the pixel difference rate
- i represents the i-th pixel unit
- n represents the total number of pixel units of the sub-image block
- the step of controlling the lighting of the mobile terminal screen according to the pixel difference rate includes:
- the mode for controlling the screen of the mobile terminal is the screen-off mode; if not, the mode for controlling the screen of the mobile terminal is the bright-screen mode.
- the step of determining that the mobile terminal is in a preset call mode is:
- the mobile terminal When the mobile terminal detects the dialing instruction input by the user, it is determined that the mobile terminal is in the preset call mode.
- the step of determining that the mobile terminal is in a preset call mode is:
- the mobile terminal When the mobile terminal detects the incoming call instruction input by the user, it is determined that the mobile terminal is in the preset call mode.
- the image includes a user's face image, hair image, and ear image.
- the shape of the sub-image block is a polygon.
- FIG. 1 shows a flowchart of a control method for turning on and off a screen of a mobile terminal according to an embodiment of the present application.
- the control method includes steps S1 to S4:
- Step S1 Determine that the mobile terminal is in a preset call mode.
- a conventional mobile terminal with a distance sensor when the mobile terminal is in a call state, the distance between the screen and the human face is detected by the distance sensor.
- the distance sensor there are the following two ways to determine whether it is the preset call mode.
- the first way when the mobile terminal detects the dialing instruction input by the user, it is determined that the mobile terminal is in the preset call mode.
- the case where the dial instruction input by the user is detected includes the following two scenarios.
- One of the scenarios is that the operation interface of the mobile terminal is on the dialing interface. After the user dials, the mobile terminal detects that the user clicks the phone dialing key. At this time, it is detected that the user has entered a dialing instruction, and the mobile terminal is determined to be in a preset call mode.
- Another scenario is that the operation interface of the mobile terminal is in a call recording interface, and the mobile terminal detects a corresponding touch-click operation of the user. At this time, it is detected that the user inputs a dialing instruction, and the mobile terminal is determined to be in a preset call mode.
- the second way when the mobile terminal detects the incoming call instruction input by the user, it is determined that the mobile terminal is in the preset call mode. Specifically, when the mobile terminal is in an incoming call state, and it is detected that the user slides or clicks on the answer call key, it is detected that the user has entered an incoming call instruction, and the mobile terminal is determined to be in a preset call mode.
- Step S2 Turn on the front camera of the mobile terminal to obtain the user's image.
- the front camera When the mobile terminal is in the preset call mode, the front camera is turned on and the user's image is taken. Specifically, after the front camera is turned on, the front camera enters the acquisition mode to obtain the camera electrical signal and the underlying optical signal data.
- the underlying optical signal data is processed by the mobile phone to form RGB electrical signal data to form a user's image.
- RGB data is not transmitted to the display, that is, the display does not display the shooting preview screen.
- Step S3 Divide the image into multiple sub-image blocks according to a preset clustering method, and calculate the pixel difference rate of each sub-image block.
- the clustering method is preferably a geometric segmentation method, that is, the user image is cut into multiple sub-image blocks according to geometric rules, and the shape of the sub-image blocks is preferably a polygon, for example, a rectangle, a prism, or a triangle.
- Each sub-image block includes a plurality of pixel units, and each pixel unit includes a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.
- ⁇ represents the pixel difference rate
- i represents the i-th pixel unit
- n represents the total number of pixel units of the sub-image block
- the rectangular sub-image block is taken as an example below.
- the sub-image block includes 9 pixel units, and the sub-pixel gray scale value of each pixel unit is as follows.
- the pixel difference rate of the sub-image block is proportional to the distance between the user and the front camera, that is, the smaller the pixel difference rate, the smaller the distance between the user and the front camera.
- the shooting range of the front camera is smaller, the pixel gray scale value of the obtained image is closer, and the calculated difference rate is smaller.
- the image captured by the front camera includes a user's face image, hair image, and ear image.
- the captured image may include multiple images of different parts at the same time.
- the pixel grayscale values between different parts vary greatly, and the error in the calculated pixel difference rate is relatively large. It is too large to accurately determine the distance between the screen and the user at this time, so the image needs to be divided to form multiple sub-image blocks, so that each sub-image block includes only pixel units of the image of the same part.
- Step S4 Control the lighting of the screen of the mobile terminal according to the pixel difference rate.
- this step includes the following steps S41 to S42:
- Step S41 Determine whether the pixel difference rate of each sub-image block is less than or equal to the difference rate threshold.
- the pixel difference rate is greater than or equal to the difference rate threshold, it indicates that the distance between the screen and the user is large;
- Step S42 if it is, the mode of controlling the screen of the mobile terminal is a screen-off mode; if not, the mode of controlling the screen of the mobile terminal is a bright-screen mode.
- the difference rate threshold is 20%, but this application does not limit the difference rate threshold.
- different difference rate thresholds should be set. In actual measurement, the current camera and the user When the distance between them is less than or equal to 15 mm, the corresponding pixel difference rate at this time is used as the difference rate threshold.
- This application discloses a control method for turning on and off the screen of a mobile terminal.
- the pixel difference rate of the user image is calculated to determine the distance between the user and the screen, and the function of simulating the distance sensor is realized to facilitate the call process.
- the function of simulating the distance sensor is realized to facilitate the call process.
- the present application also provides a computer storage medium that stores a control program for turning on and off the screen of the mobile terminal.
- a control program for turning on and off the screen of the mobile terminal is executed by the processor, any of the above screens for turning on and off the mobile terminal Control Method.
- the program may be stored in a computer-readable storage medium, and the storage medium may include: Read only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc.
- the present application also provides a mobile terminal 100.
- the mobile terminal 100 may include a radio frequency (RF, Radio Frequency) circuit, a memory 101 including one or more computer-readable storage media, an input unit, and a display Units, sensors, audio circuits, wireless fidelity (WiFi, WirelessFidelity) modules, processors 102 including one or more processing cores, and power supply components.
- RF radio frequency
- the terminal structure shown in FIG. 3 does not constitute a limitation on the terminal, and may include more or fewer components than those illustrated, or combine certain components, or arrange different components. among them:
- the RF circuit can be used to receive and send signals in the process of receiving and sending information.
- RF circuits include but are not limited to antennas, at least one amplifier, tuner, one or more oscillators, subscriber identity module (SIM, SubscriberIdentityModule) card, transceiver, coupler, low noise amplifier (LNA, LowNoiseAmplifier), Duplexer, etc.
- SIM subscriber identity module
- LNA low noise amplifier
- LowNoiseAmplifier LowNoiseAmplifier
- Duplexer etc.
- the RF circuit can also communicate with other devices via the wireless communication network.
- the memory 101 can be used to store software programs and modules, and the processor 102 runs by
- the software programs and modules stored in the memory 101 execute various functional applications and data processing.
- the memory 101 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.), and the like.
- the memory 101 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
- the memory 101 may also include a memory controller to provide access to the memory 101 by the processor and the input unit.
- the input unit can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.
- the input unit may include a touch-sensitive surface and other input devices.
- a touch-sensitive surface also known as a touch screen or touchpad, can collect user touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc. on the touch-sensitive surface or touch-sensitive surface Operation near the surface), and drive the corresponding connection device according to the preset program.
- the input unit may also include other input devices.
- other input devices may include but are not limited to one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), trackball, mouse, joystick, and so on.
- the display unit can be used to display information input by the user or provided to the user and various graphical user interfaces of the server. These graphical user interfaces can be composed of graphics, text, icons, video, and any combination thereof.
- the display unit may include a display panel, and optionally, the display panel may be configured in the form of a liquid crystal display (LCD, Liquid Crystal Display), an organic light emitting diode (OLED, Organic Light-Emitting Diode), or the like.
- the touch-sensitive surface may cover the display panel, and when the touch-sensitive surface detects a touch operation on or near it, it is transmitted to the processor 102 to determine the type of touch event, and then the processor 102 displays on the display according to the type of touch event.
- the corresponding visual output is provided on the panel.
- the touch-sensitive surface and the display panel are implemented as two separate components to realize the input and input functions, in some embodiments, the touch-sensitive surface and the display panel may be integrated to realize the input and output functions.
- the terminal may further include at least one sensor, such as a light sensor, a motion sensor, and other sensors.
- the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel according to the brightness of the ambient light, and the proximity sensor may turn off the display panel and the backlight when the server moves to the ear.
- Audio circuits, speakers, and microphones can provide audio interfaces between users and servers.
- the audio circuit can convert the received electrical data to the loudspeaker, and the loudspeaker converts it into a sound signal for output; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is converted into audio after being received by the audio circuit
- the audio data output processor 102 After the data is processed by the audio data output processor 102, it is sent to the mobile terminal via an RF circuit, or the audio data is output to the memory 101 for further processing.
- the audio circuit may also include an earplug jack to provide communication between the peripheral headset and the server.
- WiFi is a short-distance wireless transmission technology.
- the terminal can help users send and receive emails, browse web pages, and access streaming media through the WiFi module. It provides users with wireless broadband Internet access.
- FIG. 3 shows a WiFi module, it can be understood that it is not a necessary component of the terminal, and can be omitted without changing the scope of the essence of the application as needed.
- the processor 102 is the control center of the terminal, and uses various interfaces and lines to connect the various parts of the entire mobile phone, and executes the server’s execution by running or executing the software programs and modules stored in the memory 101 and calling the data stored in the memory 101.
- the processor 102 may include one or more processing cores; preferably, the processor 102 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, and application programs, etc.
- the modem processor mainly handles wireless communication. It can be understood that, the foregoing modem processor may not be integrated into the processor 102.
- the terminal also includes a power supply (such as a battery) that supplies power to various components.
- a power supply such as a battery
- the power supply can be logically connected to the processor through the power management system, so as to realize functions such as charging, discharging, and power management through the power management system.
- the power supply may also include any component such as one or more DC or AC power supplies, a recharging system, a power failure detection circuit, a power converter or inverter, and a power status indicator.
- the processor 102 in the terminal loads the executable file corresponding to the process of one or more application programs into the memory 101 according to the following instructions, and the processor 102 runs and stores the memory in the memory 101 applications in order to achieve various functions:
- the processor 102 performs the following steps:
- Each sub-image block includes a plurality of pixel units, and each pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
- the calculation formula of the pixel difference rate of each sub-image block is:
- ⁇ represents the pixel difference rate
- i represents the i-th pixel unit
- n represents the total number of pixel units of the sub-image block
- the processor 102 performs the following steps:
- the mode for controlling the screen of the mobile terminal is the screen-off mode; if not, the mode for controlling the screen of the mobile terminal is the bright-screen mode.
- the processor 102 performs the following steps:
- the mobile terminal When the mobile terminal detects the dialing instruction input by the user, it is determined that the mobile terminal is in the preset call mode.
- the processor 102 performs the following steps:
- the mobile terminal When the mobile terminal detects the incoming call instruction input by the user, it is determined that the mobile terminal is in the preset call mode.
- the processor 102 performs the following steps:
- the image includes a user's face image, hair image, and ear image.
Abstract
本申请公开了移动终端及其屏幕亮灭的控制方法、计算机存储介质，包括：确定移动终端处于预设通话模式；开启移动终端的前置摄像头以获取用户的图像；根据预设的聚类方法将所述图像分割成多个子图像块，并计算每个子图像块的像素差异率；根据像素差异率来控制移动终端屏幕的亮灭。
Description
本申请要求于2018年12月28日提交中国专利局、申请号为201811618068.0、发明名称为“移动终端及其屏幕亮灭的控制方法、计算机存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本申请属于移动通讯技术领域，特别涉及一种移动终端及其屏幕亮灭的控制方法、计算机存储介质。
目前智能移动通讯设备的屏幕尺寸越来越大，在通话过程中，人脸靠近触摸屏时容易触碰到触摸屏导致误操作，所以当靠经人脸时需要关闭触摸屏。目前的做法是在智能手机中设置距离传感器，通过距离传感器来感应用户人脸的贴近或远离，从而实现通话时贴脸灭屏的功能。
现有技术中的做法虽然能够实现贴脸灭屏的功能，但是由于需要额外增加距离传感器来实现通话过程中的亮屏或灭屏的功能，所以增加了智能终端的硬件成本，降低了产品竞争力，不利于移动设备的薄型化设计。
发明内容
本申请提供一种移动终端及其屏幕亮灭的控制方法、计算机存储介质，可以提高控制屏幕亮灭的效率。
第一方面，本申请提供一种屏幕亮灭的控制方法，包括：
确定移动终端处于预设通话模式；
开启移动终端的前置摄像头以获取用户的图像；
根据预设的聚类方法将所述图像分割成多个子图像块，并计算每个子图像块的像素差异率；
根据像素差异率来控制移动终端屏幕的亮灭。
第二方面，本申请还提供一种计算机存储介质，所述计算机存储介质存储有移动终端屏幕亮灭的控制程序，所述移动终端屏幕亮灭的控制程序被处理器执行时实现如下步骤：
确定移动终端处于预设通话模式；
开启移动终端的前置摄像头以获取用户的图像；
根据预设的聚类方法将所述图像分割成多个子图像块，并计算每个子图像 块的像素差异率；
根据像素差异率来控制移动终端屏幕的亮灭。
第三方面，本申请还提供了一种移动终端，所述移动终端包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的移动终端屏幕亮灭的控制程序，所述移动终端屏幕亮灭的控制程序被处理器执行时实现如下步骤：
确定移动终端处于预设通话模式；
开启移动终端的前置摄像头以获取摄像头电信号和底层光信号数据；
基于所述摄像头电信号和底层光信号数据确定用户的图像；
根据预设的聚类方法将所述图像分割成多个子图像块，并计算每个子图像块的像素差异率；
根据像素差异率来控制移动终端屏幕的亮灭。
本申请公开的一种移动终端及其屏幕亮灭的控制方法、计算机存储介质。通过优化相机算法，计算用户图像的像素差异率来判断用户与屏幕之间的距离远近，实现模拟距离传感器的作用，以在通话过程中，控制屏幕的亮灭。降低了移动终端的硬件成本，提高了产品竞争力，有利于移动设备的薄型化设计，从而提高用户使用体验。
图1是本申请实施例的移动终端屏幕亮灭的控制方法的流程图；
图2是本申请实施例的根据像素差异率控制亮灭的方法的流程图；
图3是本申请实施例的移动终端的结构框图。
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
一种移动终端屏幕亮灭的控制方法，包括：
确定移动终端处于预设通话模式；
开启移动终端的前置摄像头以获取用户的图像；
根据预设的聚类方法将所述图像分割成多个子图像块，并计算每个子图像块的像素差异率；
根据像素差异率来控制移动终端屏幕的亮灭。
在一些实施例中，每个所述子图像块包括多个像素单元，每个像素单元包括红色子像素、绿色子像素和蓝色子像素，所述每个子图像块的像素差异率的计算公式为：
其中，Δ表示像素差异率，i表示第i个像素单元，n表示子图像块的像素单元总数，
表示第i个像素单元的红色子像素的灰阶值，
表示第i个像素单元的绿色子像素的灰阶值，
表示第i个像素单元的蓝色子像素的灰阶值，
表示子图像块内的红色子像素的平均灰阶值，
表示子图像块内的绿色子像素的平均灰阶值，
表示子图像块内的蓝色子像素的平均灰阶值。
在一些实施例中，所述根据像素差异率来控制移动终端屏幕的亮灭的步骤，包括：
判断每个子图像块的像素差异率是否均小于或等于差异率阈值；
若是，则控制移动终端屏幕的模式为熄屏模式；若否，则控制移动终端屏幕的模式为亮屏模式。
在一些实施例中，所述确定移动终端处于预设通话模式的步骤为：
当移动终端检测到用户输入的拨号指令时，则确定移动终端处于预设通话模式。
在一些实施例中，所述确定移动终端处于预设通话模式的步骤为：
当移动终端检测到用户输入的接听来电指令时，则确定移动终端处于预设通话模式。
在一些实施例中，所述图像包括用户的脸部图像、头发图像和耳朵图像。
在一些实施例中，所述子图像块的形状为多边形。
图1示出了根据本申请实施例的移动终端屏幕亮灭的控制方法的流程图，该控制方法包括步骤S1至步骤S4：
步骤S1：确定移动终端处于预设通话模式。
在传统的具有距离传感器的移动终端中，当移动终端处于通话状态时，通过距离传感器来检测屏幕与人脸之间的距离。对于本实施例来说，判断是否为预设通话模式的方式具有如下两种。
第一种方式：当移动终端检测到用户输入的拨号指令时，则确定移动终端 处于预设通话模式。具体来说，检测到用户输入的拨号指令的情况包括如下两种情景。其中一种情景是移动终端的操作界面处于拨号界面，在用户拨号完成后，移动终端检测到用户点击电话拨号键，此时即为检测到用户输入了拨号指令，则确定移动终端处于预设通话模式。另外一种情景是移动终端的操作界面处于通话记录界面，且移动终端检测到用户相应的触摸点击操作，此时即为检测到用户输入了拨号指令，则确定移动终端处于预设通话模式。
第二种方式：当移动终端检测到用户输入的接听来电指令时，则确定移动终端处于预设通话模式。具体来说，移动终端处于来电状态时，且检测到用户对接听电话键进行滑动或点击操作时，此时即为检测到用户输入了接听来电指令，则确定移动终端处于预设通话模式。
步骤S2：开启移动终端的前置摄像头以获取用户的图像。
当移动终端处于预设通话模式时，开启前置摄像头并拍摄用户的图像。具体来说，开启前置摄像头后，前置摄像头进入采集模式，获取摄像头电信号和底层光信号数据，底层光信号数据经手机内部处理后形成RGB电信号数据，以形成用户的图像。其中，采集模式下，RGB数据不传输给显示屏，即显示屏不显示拍摄预览画面。
步骤S3：根据预设的聚类方法将所述图像分割成多个子图像块，并计算每个子图像块的像素差异率。
具体来说，聚类方法优选为几何分割方法，即按照几何规则将用户图像切割为多个子图像块，子图像块的形状优选为多边形，例如可以是矩形、棱形、三角形等。每个子图像块内包括多个像素单元，每个像素单元包括红色子像素R、绿色子像素G和蓝色子像素B。
进一步地，每个子图像块的像素差异率的计算公式为：
其中，Δ表示像素差异率，i表示第i个像素单元，n表示子图像块的像素单元总数，
表示第i个像素单元的红色子像素的灰阶值，
表示第i个像素单元的绿色子像素的灰阶值，
表示第i个像素单元的蓝色子像素的灰阶值，
表示子图像块内的红色子像素的平均灰阶值，
表示子图像块内的绿色子像素的平均灰阶值，
表示子图像块内的蓝色子像素的平均灰阶值。
在一些实施例中，下面以矩形状的子图像块为例，该子图像块包括9个像素单元，每个像素单元的子像素灰阶值如下表。
根据上述各个灰阶值可计算得到
根据上述的
计算公式可得到Δ＝0.02872021。
进一步地，经过实验验证，子图像块的像素差异率和用户与前置摄像头之间的距离呈成正比关系，即像素差异率越小，表示用户与前置摄像头之间的距离越小。在实际操作中，当用户与前置摄像头之间的距离越小时，前置摄像头拍摄的范围更小，此时获得图像的像素灰阶值更加接近，最后计算出来的差异率也更小。
进一步地，前置摄像头拍摄的图像包括用户的脸部图像、头发图像和耳朵图像。实际情况下，用户在接听电话时，拍摄的一幅图像中，可能同时包括了多个不同部位的图像，不同部位之间的像素灰阶值差别很大，计算出来的像素差异率的误差较大，不能准确地判断此时屏幕与用户之间的距离，因此需要对图像进行分割形成多个子图像块，使得每个子图像块仅包括相同部位的图像的像素单元。
步骤S4：根据像素差异率来控制移动终端屏幕的亮灭。
具体来说，如图2所示，该步骤包括如下步骤S41至步骤S42：
步骤S41：判断每个子图像块的像素差异率是否均小于或等于差异率阈值。
当像素差异率大于或等于差异率阈值时，表明屏幕与用户之间的距离较大；当
步骤S42：若是，则控制移动终端屏幕的模式为熄屏模式；若否，则控制移动终端屏幕的模式为亮屏模式。作为优选实施例，差异率阈值为20％，但本申请对差异率阈值不做限定，针对不同规格和不同型号的摄像头，应设置不同的 差异率阈值，实际测量中，当前置摄像头与用户之间的距离小于或等于15毫米时，将此时对应的像素差异率作为差异率阈值。
本申请公开的一种移动终端屏幕亮灭的控制方法，通过优化相机算法，计算用户图像的像素差异率来判断用户与屏幕之间的距离远近，实现模拟距离传感器的作用，以在通话过程中，控制屏幕的亮灭。
本申请还提供了一种计算机存储介质，计算机存储介质存储有移动终端屏幕亮灭的控制程序，移动终端屏幕亮灭的控制程序被处理器执行时实现任一种上述的移动终端屏幕亮灭的控制方法。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：只读存储器(ROM，Read Only Memory)、随机存取记忆体(RAM，Random Access Memory)、磁盘或光盘等。
本申请还提供了一种移动终端100，如图3所示，该移动终端100可以包括射频(RF，RadioFrequency)电路、包括有一个或一个以上计算机可读存储介质的存储器101、输入单元、显示单元、传感器、音频电路、无线保真(WiFi，WirelessFidelity)模块、包括有一个或者一个以上处理核心的处理器102、以及电源等部件。本领域技术人员可以理解，图3中示出的终端结构并不构成对终端的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。其中：
RF电路可用于收发信息过程中，信号的接收和发送，特别地，将基站的下行信息接收后，交由一个或者一个以上处理器处理；另外，将涉及上行的数据发送给基站。通常，RF电路包括但不限于天线、至少一个放大器、调谐器、一个或多个振荡器、用户身份模块(SIM，SubscriberIdentityModule)卡、收发信机、耦合器、低噪声放大器(LNA，LowNoiseAmplifier)、双工器等。此外，RF电路还可以通过无线通信与网络和其他设备通信。存储器101可用于存储软件程序以及模块，处理器102通过运行
存储在存储器101的软件程序以及模块，从而执行各种功能应用以及数据处理。存储器101可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等。此外，存储器101可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存 储器件。相应地，存储器101还可以包括存储器控制器，以提供处理器和输入单元对存储器101的访问。
输入单元可用于接收输入的数字或字符信息，以及产生与用户设置以及功能控制有关的键盘、鼠标、操作杆、光学或者轨迹球信号输入。具体地，在一个具体的实施例中，输入单元可包括触敏表面以及其他输入设备。触敏表面，也称为触摸显示屏或者触控板，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触敏表面上或在触敏表面附近的操作)，并根据预先设定的程式驱动相应的连接装置。除了触敏表面，输入单元还可以包括其他输入设备。具体地，其他输入设备可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆等中的一种或多种。
显示单元可用于显示由用户输入的信息或提供给用户的信息以及服务器的各种图形用户接口，这些图形用户接口可以由图形、文本、图标、视频和其任意组合来构成。显示单元可包括显示面板，可选的，可以采用液晶显示器(LCD，LiquidCrystalDisplay)、有机发光二极管(OLED，OrganicLight-EmittingDiode)等形式来配置显示面板。进一步的，触敏表面可覆盖显示面板，当触敏表面检测到在其上或附近的触摸操作后，传送给处理器102以确定触摸事件的类型，随后处理器102根据触摸事件的类型在显示面板上提供相应的视觉输出。虽然在图3中，触敏表面与显示面板是作为两个独立的部件来实现输入和输入功能，但是在某些实施例中，可以将触敏表面与显示面板集成而实现输入和输出功能。
终端还可包括至少一种传感器，比如光传感器、运动传感器以及其他传感器。具体地，光传感器可包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板的亮度，接近传感器可在服务器移动到耳边时，关闭显示面板和背光。
音频电路、扬声器，传声器可提供用户与服务器之间的音频接口。音频电路可将接收到的音频数据转换后的电信号，传输到扬声器，由扬声器转换为声音信号输出；另一方面，传声器将收集的声音信号转换为电信号，由音频电路接收后转换为音频数据，再将音频数据输出处理器102处理后，经RF电路以发送给比如移动终端，或者将音频数据输出至存储器101以便进一步处理。音频电路还可能包括耳塞插孔，以提供外设耳机与服务器的通信。
WiFi属于短距离无线传输技术，终端通过WiFi模块可以帮助用户收发电 子邮件、浏览网页和访问流式媒体等，它为用户提供了无线的宽带互联网访问。虽然图3示出了WiFi模块，但是可以理解的是，其并不属于终端的必须构成，完全可以根据需要在不改变申请的本质的范围内而省略。
处理器102是终端的控制中心，利用各种接口和线路连接整个手机的各个部分，通过运行或执行存储在存储器101内的软件程序和模块，以及调用存储在存储器101内的数据，执行服务器的各种功能和处理数据，从而对手机进行整体监控。可选的，处理器102可包括一个或多个处理核心；优选的，处理器102可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器102中。
终端还包括给各个部件供电的电源(比如电池)，优选的，电源可以通过电源管理系统与处理器逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。电源还可以包括一个或一个以上的直流或交流电源、再充电系统、电源故障检测电路、电源转换器或者逆变器、电源状态指示器等任意组件。
具体在本实施例中，终端中的处理器102会按照如下的指令，将一个或一个以上的应用程序的进程对应的可执行文件加载到存储器101中，并由处理器102来运行存储在存储器101中的应用程序，从而实现各种功能：
确定移动终端处于预设通话模式；
开启移动终端的前置摄像头以获取摄像头电信号和底层光信号数据；
基于所述摄像头电信号和底层光信号数据确定用户的图像；
根据预设的聚类方法将所述图像分割成多个子图像块，并计算每个子图像块的像素差异率；
根据像素差异率来控制移动终端屏幕的亮灭。
在一些实施例中，处理器102执行以下步骤：
每个所述子图像块包括多个像素单元，每个像素单元包括红色子像素、绿色子像素和蓝色子像素，所述每个子图像块的像素差异率的计算公式为：
其中，Δ表示像素差异率，i表示第i个像素单元，n表示子图像块的像素单 元总数，
表示第i个像素单元的红色子像素的灰阶值，
表示第i个像素单元的绿色子像素的灰阶值，
表示第i个像素单元的蓝色子像素的灰阶值，
表示子图像块内的红色子像素的平均灰阶值，
表示子图像块内的绿色子像素的平均灰阶值，
表示子图像块内的蓝色子像素的平均灰阶值。
在一些实施例中，处理器102执行以下步骤：
判断每个子图像块的像素差异率是否均小于或等于差异率阈值；
若是，则控制移动终端屏幕的模式为熄屏模式；若否，则控制移动终端屏幕的模式为亮屏模式。
在一些实施例中，处理器102执行以下步骤：
当移动终端检测到用户输入的拨号指令时，则确定移动终端处于预设通话模式。
在一些实施例中，处理器102执行以下步骤：
当移动终端检测到用户输入的接听来电指令时，则确定移动终端处于预设通话模式。
在一些实施例中，处理器102执行以下步骤：
所述图像包括用户的脸部图像、头发图像和耳朵图像。
尽管上面对本申请说明性的具体实施方式进行了描述，以便于本技术领域的技术人员能够理解本申请，但是本申请不仅限于具体实施方式的范围，对本技术领域的普通技术人员而言，只要各种变化只要在所附的权利要求限定和确定的本申请精神和范围内，一切利用本申请构思的发明创造均在保护之列。
Claims (20)
- 一种移动终端屏幕亮灭的控制方法，其包括：确定移动终端处于预设通话模式；开启移动终端的前置摄像头以获取用户的图像；根据预设的聚类方法将所述图像分割成多个子图像块，并计算每个子图像块的像素差异率；根据像素差异率来控制移动终端屏幕的亮灭。
- 根据权利要求1所述的移动终端屏幕亮灭的控制方法，其中，每个所述子图像块包括多个像素单元，每个像素单元包括红色子像素、绿色子像素和蓝色子像素，所述每个子图像块的像素差异率的计算公式为：
其中，Δ表示像素差异率，i表示第i个像素单元，n表示子图像块的像素单元总数，表示第i个像素单元的红色子像素的灰阶值，
表示第i个像素单元的绿色子像素的灰阶值，
表示第i个像素单元的蓝色子像素的灰阶值，
表示子图像块内的红色子像素的平均灰阶值，
表示子图像块内的绿色子像素的平均灰阶值，
表示子图像块内的蓝色子像素的平均灰阶值。
- 根据权利要求1所述的移动终端屏幕亮灭的控制方法，其中，所述根据像素差异率来控制移动终端屏幕的亮灭的方法包括：判断每个子图像块的像素差异率是否均小于或等于差异率阈值；若是，则控制移动终端屏幕的模式为熄屏模式；若否，则控制移动终端屏幕的模式为亮屏模式。
- 根据权利要求1所述的移动终端屏幕亮灭的控制方法，其中，所述确定移动终端处于预设通话模式的方法为：当移动终端检测到用户输入的拨号指令时，则确定移动终端处于预设通话模式。
- 根据权利要求1所述的移动终端屏幕亮灭的控制方法，其中，所述确定移动终端处于预设通话模式的方法为：当移动终端检测到用户输入的接听来电指令时，则确定移动终端处于预设通话模式。
- 根据权利要求1所述的移动终端屏幕亮灭的控制方法，其中，所述图像包括用户的脸部图像、头发图像和耳朵图像。
- 根据权利要求1所述的移动终端屏幕亮灭的控制方法，其中，所述子图像块的形状为多边形。
- 一种计算机存储介质，其中，所述计算机存储介质存储有移动终端屏幕亮灭的控制程序，所述移动终端屏幕亮灭的控制程序被处理器执行时实现如下步骤：确定移动终端处于预设通话模式；开启移动终端的前置摄像头以获取用户的图像；根据预设的聚类方法将所述图像分割成多个子图像块，并计算每个子图像块的像素差异率；根据像素差异率来控制移动终端屏幕的亮灭。
- 根据权利要求8所述的计算机存储介质，其中，每个所述子图像块包括多个像素单元，每个像素单元包括红色子像素、绿色子像素和蓝色子像素，所述每个子图像块的像素差异率的计算公式为：
其中，Δ表示像素差异率，i表示第i个像素单元，n表示子图像块的像素单元总数，表示第i个像素单元的红色子像素的灰阶值，
表示第i个像素单元的绿色子像素的灰阶值，
表示第i个像素单元的蓝色子像素的灰阶值，
表示子图像块内的红色子像素的平均灰阶值，
表示子图像块内的绿色子像素的平均灰阶值，
表示子图像块内的蓝色子像素的平均灰阶值。
- 根据权利要求8所述的计算机存储介质，其中，所述根据像素差异率来控制移动终端屏幕的亮灭的步骤，包括：判断每个子图像块的像素差异率是否均小于或等于差异率阈值；若是，则控制移动终端屏幕的模式为熄屏模式；若否，则控制移动终端屏 幕的模式为亮屏模式。
- 根据权利要求8所述的计算机存储介质，其中，所述确定移动终端处于预设通话模式的步骤为：当移动终端检测到用户输入的拨号指令时，则确定移动终端处于预设通话模式。
- 根据权利要求8所述的计算机存储介质，其中，所述确定移动终端处于预设通话模式的步骤为：当移动终端检测到用户输入的接听来电指令时，则确定移动终端处于预设通话模式。
- 根据权利要求8所述的计算机存储介质，其中，所述图像包括用户的脸部图像、头发图像和耳朵图像。
- 根据权利要求8所述的计算机存储介质，其中，所述子图像块的形状为多边形。
- 一种移动终端，其中，所述移动终端包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的移动终端屏幕亮灭的控制程序，所述移动终端屏幕亮灭的控制程序被处理器执行时实现如下步骤：确定移动终端处于预设通话模式；开启移动终端的前置摄像头以获取摄像头电信号和底层光信号数据；基于所述摄像头电信号和底层光信号数据确定用户的图像；根据预设的聚类方法将所述图像分割成多个子图像块，并计算每个子图像块的像素差异率；根据像素差异率来控制移动终端屏幕的亮灭。
- 根据权利要求15所述的移动终端，其中，每个所述子图像块包括多个像素单元，每个像素单元包括红色子像素、绿色子像素和蓝色子像素，所述每个子图像块的像素差异率的计算公式为：
其中，Δ表示像素差异率，i表示第i个像素单元，n表示子图像块的像素 单元总数，表示第i个像素单元的红色子像素的灰阶值，
表示第i个像素单元的绿色子像素的灰阶值，
表示第i个像素单元的蓝色子像素的灰阶值，
表示子图像块内的红色子像素的平均灰阶值，
表示子图像块内的绿色子像素的平均灰阶值，
表示子图像块内的蓝色子像素的平均灰阶值；
根据像素差异率来控制移动终端屏幕的亮灭。 - 根据权利要求15所述的移动终端，其中，所述根据像素差异率来控制移动终端屏幕的亮灭的步骤，包括：判断每个子图像块的像素差异率是否均小于或等于差异率阈值；若是，则控制移动终端屏幕的模式为熄屏模式；若否，则控制移动终端屏幕的模式为亮屏模式。
- 根据权利要求15所述的移动终端，其中，所述确定移动终端处于预设通话模式的步骤为：当移动终端检测到用户输入的拨号指令时，则确定移动终端处于预设通话模式。
- 根据权利要求15所述的移动终端，其中，所述确定移动终端处于预设通话模式的步骤为：当移动终端检测到用户输入的接听来电指令时，则确定移动终端处于预设通话模式。
- 根据权利要求15所述的移动终端，其中，所述图像包括用户的脸图像、头发图像和耳朵图像。
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