WO2020133141A1 - 一种显示方法、电子设备及计算机可读存储介质 - Google Patents

一种显示方法、电子设备及计算机可读存储介质 Download PDF

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Publication number
WO2020133141A1
WO2020133141A1 PCT/CN2018/124623 CN2018124623W WO2020133141A1 WO 2020133141 A1 WO2020133141 A1 WO 2020133141A1 CN 2018124623 W CN2018124623 W CN 2018124623W WO 2020133141 A1 WO2020133141 A1 WO 2020133141A1
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Prior art keywords
display
coordinate point
user
display screen
area
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PCT/CN2018/124623
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English (en)
French (fr)
Inventor
张�浩
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Shenzhen Royole Technologies Co Ltd
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Shenzhen Royole Technologies Co Ltd
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Priority to CN201880095915.1A priority Critical patent/CN112639678A/zh
Priority to PCT/CN2018/124623 priority patent/WO2020133141A1/zh
Publication of WO2020133141A1 publication Critical patent/WO2020133141A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units

Definitions

  • the present invention relates to the field of display technology, and in particular, to a display method, an electronic device, and a computer-readable storage medium.
  • the display area usually uses a set of display parameters to control the display screen to achieve a consistent display effect in the display area. Due to the limited viewing angle of the user, only the partial area of the display area is concerned, and other areas are not paid attention. However, in the existing electronic devices, the area that the user does not pay attention to and the area that the user pays attention to follow the same display parameters Control, leading to unnecessary energy consumption and affecting user experience.
  • the object of the present invention is to provide a display method, an electronic device, and a computer-readable storage medium.
  • a display method applied to an electronic device including a display screen includes: applied to an electronic device including a display screen, the display method includes: displaying a screen on the On the display area of the display screen; acquiring the user's facial image, the facial image being the frontal image of the user; acquiring the distance between the user's face and the display screen; acquiring the user's two eyes mapped on the display screen according to the user's facial image
  • a center mapping coordinate point, the center mapping coordinate point is a coordinate point corresponding to a midpoint of a line between coordinate points of the two eyes mapped to the display screen in the facial image, the line is a straight line; according to the center Calculate the relationship between the coordinate point, the distance, and the preset human eye vision to calculate the interest area and non-interest area of the display area; reduce the display parameters of the non-interest area.
  • the invention also provides an electronic device, the electronic device includes a display screen for displaying a picture; an image capturing device for acquiring a user's face image; a distance measuring sensor for acquiring a distance between the user's face and the display screen A memory for storing a computer-executable display program; and a processor for calling the computer-executable display program to perform the aforementioned display method.
  • the present invention also provides a computer-readable storage medium that stores a computer-executable display program that, when called by a computer, causes the computer to perform the foregoing display method.
  • the display method, the electronic device and the computer-readable storage medium provided by the present invention obtain the user's face image while the electronic device is in the state of the display screen in the display area, and detect the user's face and the electronic device the distance between. And obtain the central coordinate points of the user's eyes mapped on the display screen by analyzing the facial image of the household, and calculate the interest in the display area of the display screen according to the central coordinate points, the distance, and the known preset human eye visual relationship In areas and non-interest areas, the display parameters in the non-display area are reduced to achieve the effect of saving power and reducing energy consumption, so that users can obtain a better user experience.
  • FIG. 1 is a flowchart of steps of a display method provided by a first embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an electronic device displaying a graphical user interface on a display interface of a display screen.
  • FIG. 3 is a flowchart of sub-steps of step S102 in FIG. 1.
  • FIG. 4 is a flowchart of sub-steps of step S103 in FIG. 1.
  • FIG. 5 is a schematic structural diagram of a user's face image M1 acquired by an electronic device.
  • FIG. 6 is a schematic structural diagram of two eyes of a user mapped on a display screen of an electronic device.
  • FIG. 7 is a schematic diagram of a segmentation of an interest area and a non-interest area in a display area when a user views a display screen of an electronic device at a distance H.
  • FIG. 8 is a schematic diagram of the display effect of the interest area and the non-interest area when the distance between the display screen of the electronic device and the user in FIG. 1 is H.
  • 9A is a flowchart of steps of a display method provided by a second embodiment of the present invention.
  • 9B is a schematic structural view of an electronic device after bending.
  • 9C is a schematic diagram of a segmentation of an interest area and a non-interest area in the display area when the user views the display screen of the electronic device at a distance H after the electronic device is bent.
  • FIG. 10 is a structural block diagram of an electronic device provided by the present invention.
  • the electronic device in the present invention may include other functions such as a personal digital assistant (PDA) and/or a portable multimedia player (PMP)-enabled portable communication device, such as e-paper, e-book, on-board display, tablet computer, Smart phones, smart watches, smart bracelets, etc.
  • PDA personal digital assistant
  • PMP portable multimedia player
  • portable electronic devices include, but are not limited to, portable electronic devices equipped with iOS@Android@WindowsPhone@other operating systems.
  • Electronic devices usually support multiple applications, such as one or more of the following: drawing applications, rendering applications, word processing applications, web page creation applications, disk editing applications, spreadsheet applications, game applications , Phone apps, video conferencing apps, email apps, instant messaging apps, exercise support apps, photo management apps, digital camera apps, digital video camera apps, web browsing apps, digital music players Applications, and/or digital video player applications.
  • drawing applications such as one or more of the following: drawing applications, rendering applications, word processing applications, web page creation applications, disk editing applications, spreadsheet applications, game applications , Phone apps, video conferencing apps, email apps, instant messaging apps, exercise support apps, photo management apps, digital camera apps, digital video camera apps, web browsing apps, digital music players Applications, and/or digital video player applications.
  • the present invention provides a display method, an electronic device, and a computer-readable storage medium.
  • the electronic device obtains the user's facial image and detects the distance between the user's face and the electronic device when the display screen is in the display area.
  • Facial image analysis acquires the center coordinate point of the user's eyes mapped on the display screen, and calculates the interest area and non-interest in the display area of the display screen according to the center coordinate point, the distance, and the known preset human eye visual relationship Area, where the area of interest is the area where the user's gaze is high, and the non-interest area is the area where the user's gaze is low.
  • a first embodiment of the present invention provides a display method, which is applied to an electronic device, the electronic device is provided with a display screen, and the display method includes the following steps S101-S106:
  • Step S101 displaying a picture on the display area of the display screen.
  • the display screen of the electronic device 10 may be a flexible display screen, an LCD display screen, an LED display screen, or an OLED display screen.
  • the display screen of the electronic device 10 is a flexible display screen. More preferably, the electronic device 10 is a bendable device provided with a flexible display screen.
  • a screen is displayed on the display area 20 of the display screen.
  • the screen may be a solid color screen, an application screen, or a screen with one or more applications Icon user graphical interface.
  • Step S102 Acquire a facial image of the user, the facial image being a facial image on the front of the user
  • the electronic device 10 is provided with an image capturing device 103, and the image capturing device 103 is used for acquiring an image.
  • step S102 a user's facial image is obtained, and the facial image is a facial image on the front of the user, and specifically includes steps S1021-S1024.
  • S1021 Detect whether a camera instruction is received, and the camera instruction is issued by a user operating the electronic device.
  • the imaging device 103 When the electronic device 10 receives the imaging instruction issued by the user to manipulate the electronic device 10, the imaging device 103 is controlled to acquire an image.
  • the user may manipulate the electronic device 10 to issue an imaging instruction by pressing a switch button provided on the electronic device 10 to issue an imaging instruction to the electronic device 10.
  • the image capturing device 103 of the electronic device 10 may be controlled by voice recognition to acquire images.
  • S1023 Determine whether the image is a face image.
  • the facial image recognition technology can determine whether the image acquired by the imaging device 10 is a human face image, that is, the acquired image is a facial image including the facial features of the user, that is, a facial image on the front of the user.
  • Step S103 Obtain the distance between the user's face and the display screen.
  • the electronic device 10 is provided with a distance measuring sensor 101.
  • the distance measuring sensor 101 may be an ultrasonic sensor, an infrared sensor, a radar sensor, or the like.
  • the distance between the user's face and the display screen is obtained through the distance measuring sensor 101.
  • the distance between the human eye and the display screen refers to the vertical distance between the human eye and the display screen, as shown in FIG. 7, H is the distance between the human eye and the display screen 20.
  • the ranging sensor 101 when the ranging sensor 101 receives the ranging instruction, it detects and obtains the distance between the user's face and the display screen.
  • the distance measuring instruction may be triggered by the user by pressing a button switch set on the electronic device 10, may be triggered by the user by touching or clicking on the display screen of the electronic device 10, triggered by a pull-down menu in the display screen, or may be controlled by the user through a setting Voice trigger is not limited here.
  • the flexible display screen 20 of the electronic device 10 is a flexible display screen
  • the flexible display screen can also be bent to a preset arc to trigger the ranging sensor 101.
  • step S103 specifically includes steps S1031-S1034.
  • Step S1031 controlling the ranging sensor to emit a ranging signal to the user's face.
  • the ranging sensor 101 includes a ranging signal transmitting device and a ranging signal receiving device.
  • the ranging signal transmitting device of the ranging sensor 101 is controlled to transmit a ranging signal to the user's face.
  • the signal may be an infrared signal or an ultrasonic signal.
  • Step S1032 Obtain the reflected ranging signal.
  • the ranging signal receiving device of the ranging sensor 101 receives the reflected ranging signal.
  • Step S1033 Calculate the time difference between transmitting the ranging signal and receiving the reflected ranging signal.
  • the electronic device 10 records the time when the ranging sensor 101 emits the ranging signal and the time when the ranging signal is reflected, and obtains the time difference between the time when the ranging signal is transmitted and the time when the reflected reflection signal is received.
  • Step S1034 Determine the distance between the user's face and the display screen of the electronic device according to the time difference between the transmitted ranging signal and the reflected ranging signal.
  • the distance between the distance measuring sensor 101 and the user's face that is, the distance between the electronic device 10 and the user's face is calculated according to the propagation speed and time of the signal sent by the ranging signal transmitter in the medium.
  • the difference between the distance between the user's eyes and the electronic device 10 and the distance between the user's face and the electronic device 10 is small, so when the distance between the user's face and the electronic device 10 is detected, the user's face and the electronic device 10 can be The distance between them serves as the distance between the eyes and the display screen of the electronic device 10.
  • Step S104 Acquire a center mapping coordinate point of the user's two eyes mapped on the display screen according to the user's facial image, where the center mapping coordinate point is a connection line between the coordinate points of the two eyes in the facial image mapped on the display screen The coordinate point corresponding to the midpoint.
  • the length of the user's facial image M1 acquired by the imaging device 103 is L1 and the width is W1
  • the electronic device 10 obtains the first coordinate point and the second coordinate point of the two eyes in the user's face image by recognizing the two eye images or the pupil recognition in the user's face image M1, respectively.
  • the image recognition is performed on the two eyes in the user's facial image M1, and the first coordinate point and the second coordinate point of the two eyes in the user's facial image are obtained as an example for description.
  • the electronic device 10 extracts the features of the user's facial image M1, and compares the extracted features of the user's facial image M1 with the image features of the eyes pre-stored in the electronic device.
  • this area is the area where the eyes are located
  • the center point of the area where the eyes are located is the coordinate point of a single eye
  • the coordinate points of the two eyes are obtained respectively, that is, the first of the two eyes in the user's facial image is obtained respectively Coordinate points and second coordinate points.
  • a first center coordinate point is obtained according to the first coordinate point and the second coordinate point, the first center coordinate point corresponds to the midpoint of the line between the first coordinate point and the second coordinate point Coordinate points.
  • the first central coordinate point of the two eyes in M1 in the user's face image is the coordinate of point A in FIG. 5.
  • the mapping relationship between the first central coordinate point, the distance between the user's face and the display screen, and the central mapping coordinate point is set in advance, and the mapping relationship is the first mapping relationship.
  • the first mapping relationship defines the correspondence between the distance, the first center coordinate point and the center mapping coordinate point, and only the first center coordinate point and the user’s face and display screen need to be analyzed
  • the distance, that is, the center mapping coordinate point can be obtained, and the center mapping coordinate point is the coordinate point corresponding to the midpoint of the line between the coordinate points of the two eyes mapped to the display screen in the facial image, that is, the first A central coordinate point is mapped to the coordinate point of the display screen, that is, the coordinate of point B shown in FIG. 6.
  • the above eye image recognition method is used to obtain the coordinate points of the two eyes, that is, the first coordinate point and the second coordinate point of the two eyes, respectively.
  • the mapping relationship between the first coordinate point and the second coordinate point, the distance between the user's face and the display screen, and the first mapping coordinate point and the second mapping coordinate point is set in advance, and the mapping relationship is the second mapping relationship.
  • the first mapping coordinate point is a coordinate point where the first coordinate point is mapped on the display screen
  • the second mapping coordinate point is a coordinate point where the second coordinate point is mapped on the display screen.
  • the second mapping relationship defines the correspondence between the distance, the first coordinate point and the second coordinate point, and the first mapped coordinate point and the second mapped coordinate point, and only the first coordinate point and the According to the second coordinate point and the distance between the user's face and the display screen, the first mapped coordinate point and the second mapped coordinate point can be obtained.
  • the center map coordinate point can be obtained through the first map coordinate point and the second map coordinate point, and the center map coordinate point is the middle of the line connecting the first map coordinate point and the second map coordinate point The coordinate point corresponding to the point.
  • Step S105 Calculate the interest area and the non-interest area of the display area according to the relationship between the center mapping coordinate point, the distance, and the preset human eye vision.
  • the area radius is calculated according to the distance and the preset human eye vision, where the preset human eye visibility is ⁇ , and the area radius is H*tan ⁇ /2, where H is the distance; Taking the center coordinate point as the center of the circle and using the radius of the area as the radius to define the interest area 201 of the display area 20; the display area 20 other than the interest area 201 is defined as the non-interest area 203.
  • a right triangle is constructed according to the relationship between the center mapping coordinate point, the distance between the user's face and the display screen, and the preset human eye visual acuity.
  • the image M1 of the user's face and the distance H between the user's face and the display screen are acquired by the image capturing device, and the first central coordinate point is acquired by image analysis. According to the coordinates of point A and the distance H of the user's face, the coordinate points of the center of the eye, that is, the coordinates of point B, are obtained.
  • the line between point A and point B is perpendicular to the display, forming the first straight side AB
  • the length of the first right side AB is the distance H between the human eye and the display, and because the first right side and the display
  • the non-interest area 203 is an area of the display area 20 except the interest area 201.
  • Step S106 reducing the display parameters of the non-interest area.
  • the display parameters include but are not limited to display pixels and display brightness, where the display pixels affect the display resolution of the display area 20 and the display brightness affects the brightness of the display area 20.
  • reducing the display parameters of the non-interesting area 203 may be reducing the display pixels of the non-interesting area 203, thereby saving unnecessary energy consumption and improving the user experience.
  • Reducing the display parameters of the non-interest area 203 may be to reduce the display brightness of the non-interest area 203, thereby saving unnecessary energy consumption and improving the user experience.
  • the display brightness can be achieved by adjusting the gray value of the local pixels of the display area 20.
  • the gray value is 0-255.
  • the display of the display area 20 The brightness gradually increases.
  • the display brightness of the display area 20 gradually decreases. That is, the display brightness of the display area 20 is inversely proportional to the gray value of the pixels in the display area, and its display effect is shown in FIG. 8.
  • the display brightness may be achieved by adjusting the driving voltage of the pixels in the display area 20.
  • the display area 20 of the display screen includes a plurality of display units, and the display unit with the distance between the non-interest area 203 and the center mapping coordinate point has a lower display brightness, that is, the distance from the center mapping coordinate point
  • the display brightness of the display unit in the non-interest area 203 further away is darker. That is, the display brightness of the display unit in the non-interest area that is further away from the center mapping coordinate point is controlled to be lower.
  • FIG. 9A is a display method provided by a second embodiment of the present invention. After the display screen is displayed on the display area of the display screen and before the user’s facial image is acquired, the display method includes: further including detecting the For the bending arc of the electronic device, the display method includes steps S201-S208.
  • Step S201 displaying a picture on the display area of the display screen.
  • step S201 is the same as step S101 in FIG. 1 and will not be repeated here.
  • Step S202 Detect the bending arc of the electronic device, which is a bendable device provided with a flexible display screen.
  • the display screen of the electronic device 10 is a flexible display screen or the electronic device 10 is a bendable device with a flexible display screen, and the flexible display screen can be bent under the action of an external force.
  • the electronic device 10 is provided with a detection unit 104.
  • the detection unit 104 is a pressure sensor or a distance sensor sensor, which may be integrated in the flexible display screen or may be installed on the flexible display screen. When the flexible display screen changes in bending, the distance between the two ends of the flexible display screen, the resistance value of the flexible display screen, or the pressure value in the flexible display screen changes.
  • the detection unit 104 can identify the degree of bending by detecting the change distribution of the resistance value and the pressure value of the flexible display screen, or the degree to which the two edges of the display screen are close to each other due to the bend or the distance between the detection units 104 Identify the bending degree of the flexible display screen, and generate a sensing signal corresponding to the bending degree of the flexible display screen, the display terminal can detect the bending degree of the flexible display screen by receiving and/or parsing the sensing signal, and generate the corresponding bending Radian value.
  • FIGS. 9B-9C there are two detection units 104, which are respectively disposed on opposite sides of the flexible display in the lateral direction, that is, the symmetry axis is L.
  • the distance between the detection units 106 changes, so the bending degree of the flexible display screen, that is, the bending arc can be obtained by detecting the distance between the detection units 106 .
  • step S203 it is determined whether the bending radian of the electronic device exceeds a threshold, and when the bending radian exceeds the threshold, step S204 is executed; otherwise, step S203 is executed.
  • the electronic device 10 is provided with a bending radian threshold.
  • step S204 is executed.
  • Step S204 Acquire a face image of the user, the face image being a face image on the front of the user.
  • step S204 is the same as step S102 in FIG. 1 and will not be repeated here.
  • Step S205 Obtain the distance between the user's face and the display screen.
  • step S204 is the same as step S103 in FIG. 1 and will not be repeated here.
  • Step S206 Acquire the center mapping coordinate points of the user's two eyes mapped on the display screen according to the user's face image, where the center mapping coordinate points are the connection lines between the coordinate points of the two eyes in the facial image mapped on the display screen
  • the coordinate point corresponding to the midpoint is a straight line.
  • step S206 is the same as step S104 in FIG. 1 and will not be repeated here.
  • Step S207 Calculate the interest area and non-interest area of the display area according to the relationship between the center mapping coordinate point, the distance, and the preset human eye vision.
  • step S207 is the same as step S105 in FIG. 1 and will not be repeated here.
  • Step S208 reducing the display parameters of the non-interest area.
  • step S208 is the same as step S106 in FIG. 1 and will not be repeated here.
  • a third embodiment of the present invention also provides an electronic device 30, which can be used to execute the display method provided by the present invention.
  • the electronic device 30 includes an imaging device 301, a display screen 302, a distance measuring sensor 304, a processor 303, and a memory 305.
  • the display screen 302, the processor 303, and the memory 305 are connected by a bus to implement a communication function.
  • the image capturing device 301 is used to acquire a user's facial image.
  • the ranging sensor 304 is used to obtain the distance between the user's face and the display screen.
  • the memory 305 includes at least one of the following: random access memory, non-volatile memory external memory, the memory 305 can be used to store a computer-executable display program, and the processor 303 is stored in the memory 305 by calling A computer-executable display program to execute any of the above display methods.
  • the memory 305 mainly includes a program storage area and a data storage area, where the program storage area can store an operating system, at least one function required application programs, etc.; the data storage area can store data created according to the use of the terminal, etc., that is, the memory 305 is a computer-readable storage medium.
  • the processor 303 is the control center of the electronic device 30, and uses various interfaces and lines to connect the various parts of the entire electronic device 30. By running or executing the programs and/or units stored in the memory 305, the The data in the memory 305 is used to perform various functions of the terminal device and process data.
  • the processor 303 may be composed of an integrated circuit (Integrated Circuit, IC for short), for example, may be composed of a single packaged IC, or may be composed of multiple packaged ICs connected with the same function or different functions.
  • the processor 303 may include only a central processing unit, or a combination of a CPU, a digital signal processor (DSP), a GPU, and various control chips.
  • the CPU may be a single computing core, or may include multiple computing cores.
  • the display screen of the electronic device 30 is a flexible display screen
  • the electronic device 30 further includes a detection unit 306 for detecting the bending arc of the flexible display screen.

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Abstract

一种显示方法、电子设备及计算机可读存储介质，所述显示控制方法应用于包括显示屏的电子设备，所述显示方法包括：显示画面于所述显示屏的显示区域上（S101）；获取用户面部图像，所述面部图像为用户正面的面部图像（S102）；获取用户面部与显示屏之间的距离（S103）；根据所述用户面部图像获取用户两只眼睛映射于显示屏的中心映射坐标点，所述中心映射坐标点为所述面部图像中两只眼睛映射于显示屏的坐标点之间连线中点所对应的坐标点，所述连线为直线（S104）；根据所述中心映射坐标点、所述距离以及预设的人眼视度的关系计算所述显示区域的兴趣区域和非兴趣区域（S105）；降低非兴趣区域的显示参数（S106）。

Description

一种显示方法、电子设备及计算机可读存储介质 技术领域
本发明涉及显示技术领域，尤其涉及一种显示方法、电子设备及计算机可读存储介质。
背景技术
随着电子通信技术的发展，越来越多的制造商越来越注重电子设备的用户体验。例如，电子设备的便携性，操作便捷性，人机友好交互等。目前的电子设备显示画面时，显示区域的通常采用一组显示参数控制所述显示屏以达到显示区域的显示效果一致。由于用户的视角有限，在往往只会关注显示区域的部分区域，其他区域是不去关注，然而现有的电子设备中，用户不去关注的区域与所述用户关注的区域按照相同的显示参数控制，导致不必要的能耗，影响用户体验。
发明内容
为了克服现有技术的不足，本发明的目的在于提供一种显示方法、电子设备及计算机可读存储介质。
本发明的目的采用如下技术方案实现：一种显示方法，应用于包括显示屏的电子设备，所述显示方法包括：应用于包括显示屏的电子设备，所述显示方法包括：显示画面于所述显示屏的显示区域上；获取用户面部图像，所述面部图像为用户正面的面部图像；获取用户面部与显示屏之间的距离；根据所述用户面部图像获取用户两只眼睛映射于显示屏的中心映射坐标点，所述中心映射坐标点为所述面部图像中两只眼睛映射于显示屏的坐标点之间连线中点所对应的坐标点，所述连线为直线；根据所述中心映射坐标点、所述距离以及预设的人眼视度的关系计算所述显示区域的兴趣区域和非兴趣区域；降低非兴趣区域的显示参数。
本发明还提供一种电子设备，所述电子设备包括，显示屏，用于显示画面；采像装置，用于获取用户面部图像；测距传感器，用于获取用户面部与显示屏之间的距离；存储器，用于存储计算机可执行的显示程序；以及处理器，用于调用所述计算机可执行的显示程序以执行前述的显示方法。
本发明还提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机可执行的显示程序，所述计算机可执行的显示程序在被计算机调用时，使所述计算机执行前述的显示方法。
与现有设计相比，本发明所提供的显示方法、电子设备及计算机可读储存 介质，通过在电子设备在显示画面于显示区域的状态下，获取用户面部图像，并检测用户面部与电子设备之间的距离。并通过对户面部图像分析获取用户眼睛映射于显示屏的中心坐标点，并根据所述中心坐标点、所述距离以及已知的预设的人眼视度关系计算显示屏显示区域中的兴趣区域和非兴趣区域，通过降低非显示区的显示参数，以达到省电从而降低能耗的效果，使用户获得较佳的用户体验。
附图说明
图1为本发明第一实施例提供的显示方法的步骤流程图。
图2为电子设备显示图形用户界面于显示屏显示界面的示意图。
图3为图1中步骤S102的子步骤流程图。
图4为图1中步骤S103的子步骤流程图。
图5为电子设备所获取的用户的脸图像M1结构示意图。
图6为用户的两只眼睛映射于电子设备显示屏的结构示意图。
图7为用户在距离H处观看电子设备显示屏时，显示区域中的兴趣区域和非兴趣区域的分割示意图。
图8为图1中电子设备显示屏与用户距离为H时，兴趣区域和非兴趣区域的显示效果示意图。
图9A为本发明第二实施例提供的显示方法的步骤流程图。
图9B为电子设备弯折后的结构示意图。
图9C为的电子设备弯折后，用户在距离H处观看电子设备显示屏时，显示区域中的兴趣区域和非兴趣区域的分割示意图。
图10为本发明提供的一种电子设备结构框图。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明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用以解释本发明，并不用于限定本发明。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，在本发明中涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明中的电子设备可包含其它功能诸如个人数字助理(PDA)和/或使携式多媒体播放器(PMP)功能的使携式通信设备，诸如电子纸、电子书、车载显示器、平板电脑、智能手机、智能手表、智能手环等。使携式电子设备的示例性实施例包括但不限于搭载iOS@Android@Windows Phone@者其它操作系统的使携式电子设备。电子设备通常支持多种应用程序，诸如以下中的一种或多种:画图应用程序、呈现应用程序、文字处理应用程序、网页创建应用程序、盘编辑应用程序、电子表格应用程序、游戏应用程序、电话应用程序、视频会议应用程序、电子邮件应用程序、即时消息应用程序、锻炼支持应用程序、相片管理应用程序、数字相机应用程序、数字视频摄像机应用程序、网络浏览应用程序、数字音乐播放器应用程序、和/或数字视频播放器应用程序。
本发明提供一种显示方法、电子设备及计算机可读存储介质，电子设备在显示画面于显示区域的状态下，通过获取用户面部图像，并检测用户面部与电子设备之间的距离，通过对户面部图像分析获取用户眼睛映射于显示屏的中心坐标点，并根据所述中心坐标点、所述距离以及已知的预设的人眼视度关系计算显示屏显示区域中的兴趣区域和非兴趣区域，其中兴趣区域为用户目光关注度较高区域，非兴趣区域为用户目光关注度较低区域。通过降低非显示区的显示参数，以达到省电从而降低能耗的效果，使用户获得较佳的用户体验。
请参阅图1，本发明第一实施例提供一种显示方法，应用于电子设备，该电子设备设置有显示屏，该显示方法包括以下步骤S101-S106：
步骤S101，显示画面于所述显示屏的显示区域上。
本实施例中，电子设备10的显示屏可以是柔性显示屏、LCD显示屏、LED显示屏或OLED显示屏。优选地，电子设备10的显示屏为柔性显示屏。更优选地，电子设备10为设置有柔性显示屏的可弯折设备。
如图2所示，电子设备10在开机状态或显示屏处于激活状态时，显示画面于显示屏的显示区域20，该画面可以是纯色画面、应用程序的画面或具有一个或多个应用程序的图标的用户图形界面。
步骤S102，获取用户面部图像，所述面部图像为用户正面的面部图像
电子设备10设置有采像装置103，采像装置103用于获取图像。
请参阅图3，步骤S102，获取用户面部图像，所述面部图像为用户正面的面部图像，具体包括步骤S1021-S1024。
其中，S1021：检测是否接收到摄像指令，所述摄像指令由用户操控所述电子设备发出。
S1022：当接收到摄像指令时，控制所述采像装置获取图像。
当电子设备10接收到用户操控该电子设备10发出的摄像指令时，控制采像装置103获取图像。用户操控电子设备10发出摄像指令可以是通过按动设置于电子设备10的开关按钮，从而向电子设备10发出摄像指令。也可以利用语 音识别控制电子设备10的采像装置103获取图像。
S1023：判断所述图像是否为人脸图像。
通过人脸图像识别技术可以判断采像装置10所获取的图像是否为人脸图像，即所获取的图像为包括用户五官的面部图像，也即用户正面的面部图像。
S1024：当所述图像是人脸图像时，将获取的人脸图像作为用户面部图像。
步骤S103，获取用户面部与显示屏之间的距离。
电子设备10内设置有测距传感器101，测距传感器101可以是超声波传感器，红外传感器或雷达传感器等测距传感器。通过测距传感器101获取用户面部与显示屏之间的距离，本实施例中人眼与显示屏之间的距离是指人眼和显示屏之间的垂直距离，如图7所示，图中H即为人眼和显示屏20之间的距离。
在部分实施例中，当测距传感器101收到测距指令时，检测并获取用户面部与显示屏之间的间距。其中测距指令可以是用户通过电子设备10上设置的按压按钮开关触发，可以是用户通过触摸或点击电子设备10显示屏，通过显示屏中的下拉菜单触发，还可以是用户通过设定的控制语音触发，在此不做限定。
进一步，当电子设备10的显示屏20为柔性显示屏时，还可以通过柔性显示屏弯折到预设弧度从而触发测距传感器101。
请参阅图4，具体地，步骤S103，具体包括步骤S1031-S1034。
步骤S1031：控制所述测距传感器向用户面部发射测距信号。
测距传感器101包括测距信号发射装置和测距信号接收装置，当电子设备10接收到测距指令时，控制测距传感器101的测距信号发射装置向用户面部发射测距信号，该测距信号可以是红外信号，超声波信号。
步骤S1032：获取反射回来的测距信号。
测距传感器101的测距信号接收装置接收反射的测距信号。
步骤S1033：计算发射测距信号和接收到所述反射测距信号之间的时间差。
电子设备10记录测距传感器101发出发射测距信号的时间以及反射测距信号的时间，并获得发射测距信号时间点与接收到测距反射信号时间点之间的时间差。
步骤S1034：根据所述发射测距信号和反射测距信号的时间差，确定用户面部和电子设备显示屏之间的距离。
根据测距信号发射器所发出的信号在介质中的传播速度和时间计算出测距传感器101与用户面部之间的距离，即电子设备10与用户面部之间的距离。用户眼睛与电子设备10之间的距离与用户面部与电子设备10之间的距离差值较小，因此检测到用户面部与电子设备10之间的距离时，即可将用户面部与电子设备10之间的距离作为眼睛与电子设备10显示屏之间的距离。
步骤S104，根据所述用户面部图像获取用户两只眼睛映射于显示屏的中心映射坐标点，所述中心映射坐标点为所述面部图像中两只眼睛映射于显示屏的 坐标点之间连线中点所对应的坐标点。
如图5所示，采像装置103所获取的用户面部图像M1的长度为L1，宽度为W1，且用户面部图像M1的长宽比为k，即L1/W1＝k，k大于1的常数。
电子设备10通过对用户面部图像M1中的两只眼睛图像识别或者瞳孔识别，分别获得用户面部图像中两只眼睛的第一坐标点和第二坐标点。本实施例中以对用户面部图像M1中的两只眼睛进行图像识别，以分别获得用户面部图像中两只眼睛的第一坐标点和第二坐标点为例进行说明。
电子设备10提取用户面部图像M1的特征，根据提取到的用户面部图像M1特征与预存于电子设备内的眼睛的图像特征比对，当用户面部图像M1中某个区域内眼睛的图像特征高于设定阈值时，该区域即为眼睛所在区域，眼睛所在区域的中心点即为单只眼睛的坐标点，分别获取两只眼睛的坐标点，即分别获得用户面部图像中两只眼睛的第一坐标点和第二坐标点。同时，根据所述第一坐标点和所述第二坐标点获取第一中心坐标点，所述第一中心坐标点为第一坐标点和第二坐标点之间的连线的中点所对应的坐标点。本实施例中，用户面部图像中M1中的两只眼睛的第一中心坐标点即图5中的A点坐标。
通过预先将所述第一中心坐标点、用户面部与显示屏的距离以及所述中心映射坐标点三者映射关系对应设置，该映射关系为第一映射关系。所述第一映射关系定义了所述距离、所述第一中心坐标点和所述中心映射坐标点之间的对应关系，只需分析出所述第一中心坐标点以及用户面部与显示屏的距离，即可以获知所述中心映射坐标点，所述中心映射坐标点为所述面部图像中两只眼睛映射于显示屏的坐标点之间连线中点所对应的坐标点，即所述第一中心坐标点映射于显示屏的坐标点，也即图6中所示的B点坐标。
部分实施例中，采用上述眼睛图像识别方法分别获取两只眼睛的坐标点，也即两只眼睛的第一坐标点和第二坐标点。通过预先将所述第一坐标点和所述第二坐标点、用户面部与显示屏的距离以及第一映射坐标点和第二映射坐标点三者映射关系对应设置，该映射关系为第二映射关系。其中，所述第一映射坐标点为第一坐标点映射于所述显示屏的坐标点，所述第二映射坐标点为第二坐标点映射于所述显示屏的坐标点。所述第二映射关系定义了所述距离、第一坐标点和第二坐标点以及第一映射坐标点和第二映射坐标点之间的对应关系，只需获取所述第一坐标点和所述第二坐标点以及用户面部与显示屏的距离，即可获取第一映射坐标点和第二映射坐标点。通过第一映射坐标点和第二映射坐标点即可获取所述中心映射坐标点，所述中心映射坐标点为所述第一映射坐标点和所述第二映射坐标点之间连线的中点所对应的坐标点。
步骤S105，根据所述中心映射坐标点、所述距离以及预设的人眼视度的关系计算所述显示区域的兴趣区域和非兴趣区域。
请参阅图7，根据所述距离和预设的人眼视度计算出区域半径，其中，预设 的人眼视度为α，区域半径为H*tanα/2，其中H为所述距离；以所述中心坐标点为圆心，以所述区域半径为半径界定出所述显示区域20的兴趣区域201；将除所述兴趣区域201以外的显示区域20界定为所述非兴趣区域203。
具体地，根据所述中心映射坐标点、用户面部与显示屏之间的距离以及预设的人眼视度的关系构建直角三角形。
通过采像装置获取用户面部图像M1，以及用户面部与显示屏之间的距离H，通过图像分析获取所述第一中心坐标点。根据A点的坐标和用户面部的距离H获取眼睛的中心映射坐标点，即B点的坐标。
A点和B点之间的连线垂直于显示屏，构成第一直角边AB，该第一直角边AB长度为即为人眼与显示屏之间的距离H，且由于第一直角边与显示屏相互垂直，因此，∠ABC为直角，∠BAC为已知的预设人眼视度α的一半，故，第二直角边BC的长度为H*tan A，其中A＝α/2。
兴趣区域201，即是以B点为圆点，以H*tan A为半径所形成的圆在所述显示屏上所界定的区域即是兴趣区域201，其中A＝α/2，α为已知的预设人眼视度。也即兴趣区域201为，以点B为圆心，H*tanα/2为半径的所述形成的圆形区域与显示屏的显示区域20相互重合的区域。非兴趣区域203为所述显示区域20除所述兴趣区域201以外的区域。
示例性地，假设B点的坐标为(x，y)，显示区域内任意一点的坐标为C(x 1，y 1)，当
Figure PCTCN2018124623-appb-000001
时，即点C处于非兴趣区域203。当
Figure PCTCN2018124623-appb-000002
时，即点C处于兴趣区域201。
步骤S106，降低非兴趣区域的显示参数。
将显示区域20区分为兴趣区域201和非兴趣区域203后，降低非兴趣区域203的显示参数。显示参数包括但不限于显示像素和显示亮度，其中，显示像素影响显示区域20的显示分辨率，显示亮度影响显示区域20的明暗程度。
在部分实施例中，降低非兴趣区域203的显示参数可以是降低非感兴趣区域203的显示像素，从而节约不必要的能耗，并提高用户体验。
降低非兴趣区域203的显示参数可以是降低非感兴趣区域203的显示亮度，从而节约不必要的能耗，并提高用户体验。
其中，显示亮度可以通过调节显示区域20局部像素点的灰度值实现，灰度值取值为0-255，当像素点的灰度值从255逐渐减小至0时，显示区域20的显示亮度逐渐提高。当像素点的灰度值从0逐渐增大至255时，显示区域20的显示亮度逐渐降低。也即显示区域20的显示亮度与显示区域内像素点的灰度值成反比，其显示效果如图8所示。
部分实施例中，显示亮度可以通过调节显示区域20内像素点的驱动电压实现。
优选地，所述显示屏的显示区域20内包括多个显示单元，非兴趣区域203与所述中心映射坐标点距离越远的显示单元，其显示亮度越低，也即与中心映射坐标点点距离越远的非兴趣区域203内的显示单元的显示亮度越暗。即控制与所述中心映射坐标点距离越远的所述非兴趣区域内显示单元的显示亮度越低。
请参阅图9A，图9A为本发明第二实施例提供的显示方法，在显示画面于所述显示屏的显示区域上之后以及获取用户面部图像之前，所述显示方法包括：还包括检测所述电子设备的弯曲弧度，所述显示方法包括步骤S201-S208。
步骤S201，显示画面于所述显示屏的显示区域上。
本实施例中，步骤S201与图1中步骤S101相同，在此不做赘述。
步骤S202，检测所述电子设备的弯曲弧度，所述电子设备为设置有柔性显示屏的可折弯设备。
电子设备10的显示屏为柔性显示屏或电子设备10为具有柔性显示屏的可弯折设备，该柔性显示屏在外力作用下可以发生弯折。电子设备10设置有检测单元104。其中检测单元104为压力传感器或距离传感器传感器，其可以是集成在柔性显示屏内，也可以是安装在柔性显示屏上。该柔性显示屏在发生弯曲变化时，该柔性显示屏两端之间的距离、柔性显示屏的电阻值或柔性显示屏内所受到压力值发生变化。检测单元104可以通过检测该柔性显示屏电阻值的变化分布、压力值的变化来识别弯曲的程度，或显示屏的两个边缘由于弯曲而相互靠近的程度或检测单元104彼此之间的间距来识别柔性显示屏的弯曲程度，并将柔性显示屏的弯曲程度对应生成感测信号，显示终端通过接收和/或解析该感测信号即可检测到柔性显示屏的弯曲程度，并生成对应的弯曲弧度值。
如图9B-9C所示，检测单元104为两个，分别设置在柔性显示屏的横向方向的相对两侧，即对称轴为L。当柔性显示屏在从伸直状态转变为折弯状态时，检测单元106彼此之间的间距发生改变，因此该柔性显示屏的弯曲程度也即弯曲弧度可以通过检测检测单元106之间的间距获得。
步骤S203，判断电子设备的弯曲弧度是否超过阈值，当所述弯曲弧度超过阈值时执行步骤S204，否则执行步骤S203。
电子设备10内设置有弯曲弧度阈值，当柔性显示屏的弯曲弧度大于阈值时，执行步骤S204。
步骤S204，获取用户面部图像，所述面部图像为用户正面的面部图像。
本实施例中，步骤S204与图1中的步骤S102相同，在此不做赘述。
步骤S205，获取用户面部与显示屏之间的距离。
本实施例中，步骤S204与图1中的步骤S103相同，在此不做赘述。
步骤S206，根据所述用户面部图像获取用户两只眼睛映射于显示屏的中心 映射坐标点，所述中心映射坐标点为所述面部图像中两只眼睛映射于显示屏的坐标点之间连线中点所对应的坐标点，所述连线为直线。
本实施例中，步骤S206与图1中的步骤S104相同，在此不做赘述。
步骤S207，根据所述中心映射坐标点、所述距离以及预设的人眼视度的关系计算所述显示区域的兴趣区域和非兴趣区域。
本实施例中，步骤S207与图1中的步骤S105相同，在此不做赘述。
步骤S208，降低非兴趣区域的显示参数。
本实施例中，步骤S208与图1中的步骤S106相同，在此不做赘述。
请参阅图11，本发明第三实施例还提供一种电子设备30，该电子设备30可以用于执行本发明所提供的显示方法。该电子设备30包括采像装置301，显示屏302，测距传感器304，处理器303以及存储器305。其中显示屏302，处理器303以及存储器305通过总线连接，实现通信功能。
其中，采像装置301用于获取用户面部图像。测距传感器304用于获取用户面部与显示屏之间的距离。
存储器305包括以下至少一种：随机存取存贮器、非易失性存储器外部存储器，所述存储器305可用于存储计算机可执行的显示程序，所述处理器303通过调用存储在所述存储器305中的计算机可执行的显示程序，从而执行上述任意一种显示方法。存储器305主要包括程序存储区域和数据存储区域，其中，程序存储区域可存储操作系统、至少一个功能所需的应用程序等；数据存储区域可存储根据终端的使用所创建的数据等，也即存储器305为计算机可读存储介质。
处理器303为电子设备30的控制中心，利用各种接口和线路连接整个所述电子设备30的各个部分，通过运行或执行存储在所述存储器305内的程序和/或单元，调用存储在所述存储器305内的数据，以执行所述终端设备的各种功能和处理数据。所述处理器303可以由集成电路(Integrated Circuit，简称IC)组成，例如可以由单颗封装的IC所组成，也可以由连接多颗相同功能或不同功能的封装IC而组成。举例来说，处理器303可以仅包括中央处理器，也可以是CPU、数字信号处理器(Digital Signal Processor，简称DSP)、GPU及各种控制芯片的组合。在本发明实施方式中，CPU可以是单运算核心，也可以包括多运算核心。
在部分实施例中，电子设备30的显示屏为柔性显示屏，且电子设备30还包括检测单元306，用于检测柔性显示屏的弯曲弧度。
上述实施方式仅为本发明的优选实施方式，不能以此来限定本发明保护的范围，本领域的技术人员在本发明的基础上所做的任何非实质性的变化及替换均属于本发明所要求保护的范围。

Claims (14)

  1. 一种显示方法，应用于包括显示屏的电子设备，其特征在于，所述显示方法包括：
    显示画面于所述显示屏的显示区域上；
    获取用户面部图像，所述面部图像为用户正面的面部图像；
    获取用户面部与显示屏之间的距离；
    根据所述用户面部图像获取用户两只眼睛映射于显示屏的中心映射坐标点，所述中心映射坐标点为所述面部图像中两只眼睛映射于显示屏的坐标点之间直线连线的中点所对应的坐标点；
    根据所述中心映射坐标点、所述距离以及预设的人眼视度的关系计算所述显示区域的兴趣区域和非兴趣区域；
    降低非兴趣区域的显示参数。
  2. 如权利要求1所述的显示方法，其特征在于，根据所述中心映射坐标点、所述距离以及预设的人眼视度的关系计算所述显示区域的兴趣区域和非兴趣区域具体包括：
    根据所述距离和预设的人眼视度计算出区域半径，其中，所述预设的人眼视度为α，所述区域半径为H*tanα/2，其中H为所述距离；
    以所述中心映射坐标点为圆心，以所述区域半径为半径界定出所述显示区域的兴趣区域；
    将除所述兴趣区域以外的显示区域界定为所述非兴趣区域。
  3. 如权利要求1所述的显示方法，其特征在于，所述电子设备设置有采像装置，获取用户面部图像具体包括：
    检测是否接收到摄像指令，所述摄像指令由用户操控所述电子设备产生；
    当接收到摄像指令时，控制所述采像装置获取图像；
    判断所述图像是否为人脸图像；
    当所述图像是人脸图像时，将所述人脸图像作为用户面部图像。
  4. 如权利要求2所述的显示方法，其特征在于，电子设备内设置有测距传感器，获取用户面部与显示屏之间的距离具体包括：
    控制所述测距传感器向用户面部发射测距信号；
    获取反射回来的测距信号；
    计算发射测距信号和接收到所述反射测距信号之间的时间差；
    根据所述发射测距信号和反射测距信号的时间差，确定用户面部和电子设备显示屏之间的距离。
  5. 如权利要求1所述的显示方法，其特征在于，获取用户两只眼睛映射于显示屏的中心映射坐标点具体包括：
    根据所述用户面部图像，识别所述用户面部图像中的两只眼睛；
    分别获得用户面部图像中两只眼睛的第一坐标点和第二坐标点；
    根据所述第一坐标点和所述第二坐标点获取第一中心坐标点，所述第一中心坐标点为第一坐标点和第二坐标点之间的直线连线的中点所对应的坐标点，；
    根据所述距离、所述第一中心坐标点以及预设的第一映射关系，获取所述中心映射坐标点，其中，所述第一映射关系定义了所述距离、所述第一中心坐标点和所述中心映射坐标点之间的对应关系。
  6. 如权利要求1所述的显示方法，其特征在于，获取用户两只眼睛映射于显示屏的中心映射坐标点具体包括：
    根据所述用户面部图像，识别所述用户面部图像中的两只眼睛；
    分别获得用户面部图像中两只眼睛的第一坐标点和第二坐标点；
    根据所述距离、第一坐标点和第二坐标点以及预设的第二映射关系，获取第一映射坐标点和第二映射坐标点，其中，所述第一映射坐标点为第一坐标点映射于所述显示屏的坐标点，所述第二映射坐标点为第二坐标点映射于所述显示屏的坐标点；所述第二映射关系定义了所述距离、第一坐标点和第二坐标点以及第一映射坐标点和第二映射坐标点之间的对应关系；
    根据所述第一映射坐标点和第二映射坐标点，获取所述中心映射坐标点，其中，所述中心映射坐标点为所述第一映射坐标点和所述第二映射坐标点之间直线连线的中点所对应的坐标点。
  7. 如权利要求1所述的显示方法，其特征在于，所述显示参数包括显示像素，降低非兴趣区域的显示参数具体为：
    降低非感兴趣区域的显示像素。
  8. 如权利要求1所述的显示方法，其特征在于，所述显示参数包括显示亮度，降低非兴趣区域的显示参数具体为：
    降低非感兴趣区域的显示亮度。
  9. 如权利要求8所述的显示方法，其特征在于，降低非感兴趣区域的显示亮度包括：
    提高非感兴趣区域内像素点的灰度值，以降低非感兴趣区域的显示亮度。
  10. 如权利要求8所述的显示方法，其特征在于，所述显示屏的显示区域包括多个显示单元，所述显示方法包括：
    控制与所述中心映射坐标点距离越远的所述非兴趣区域内显示单元的显示亮度越低。
  11. 如权利要求1-10任意一项所述的显示方法，其特征在于，在显示画面于所述显示屏的显示区域上之后以及获取用户面部图像之前所述显示方法包括：
    检测所述电子设备的弯曲弧度，所述电子设备为设置有柔性显示屏的可折弯设备；
    判断电子设备的弯曲弧度是否超过阈值；
    当所述弯曲弧度超过阈值时，获取用户面部图像。
  12. 一种电子设备，其特征在于，所述电子设备包括：
    显示屏，用于显示画面；
    采像装置，用于获取用户面部图像；
    测距传感器，用于获取用户面部与显示屏之间的距离；
    存储器，用于存储计算机可执行的显示程序；以及
    处理器，用于调用所述计算机可执行的显示程序以执行如权利要求1～11任意一项所述的显示方法。
  13. 如权利要求12所述的电子设备，其特征在于：
    所述显示屏为柔性显示屏；
    所述电子设备还包括检测单元，所述检测单元用于检测所述柔性显示屏的弯曲弧度。
  14. 一种计算机可读存储介质，其特征在于：所述计算机可读存储介质存储有计算机可执行的显示程序，所述计算机可执行的显示程序在被计算机调用时，使所述计算机执行如权利要求1-11任意一项所述的显示方法。
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