CN108509037B - Information display method and mobile terminal - Google Patents
Information display method and mobile terminal Download PDFInfo
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- CN108509037B CN108509037B CN201810252200.4A CN201810252200A CN108509037B CN 108509037 B CN108509037 B CN 108509037B CN 201810252200 A CN201810252200 A CN 201810252200A CN 108509037 B CN108509037 B CN 108509037B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
- G06F3/013—Eye tracking input arrangements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3265—Power saving in display device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
Abstract
The invention provides an information display method and a mobile terminal, wherein the method comprises the following steps: if the screen of the mobile terminal is in a turned-off state, acquiring an image through a camera; if the image has a face image, acquiring eye image characteristics in the face image; judging whether the sight of the user faces the screen or not according to the eye image characteristics; and if the sight of the user faces the screen, displaying preset content on the screen. Therefore, when the mobile terminal is turned off for displaying, the preset content is displayed only when the sight of the user faces the screen, so that part of the screen area can be prevented from being kept long and bright, and the power consumption of the mobile terminal is saved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information display method and a mobile terminal.
Background
With the development of mobile terminal technology, more and more convenience is brought to people. For example, the off-screen display function may enable the mobile terminal to keep on a part of the screen for a long time in a state where the screen is off, so as to display some specific information or content to the user. Therefore, the user can see some information to be acquired, such as time, weather, electric quantity and other common information, without actively lighting the screen frequently, thereby bringing great convenience to the user. However, this method needs to be kept long bright in a partial area of the screen, which will increase the power consumption of the mobile terminal. Therefore, when the conventional mobile terminal performs off-screen display, it is necessary to keep a part of the screen area always on in a state where the screen is off, so that the power consumption of the mobile terminal is high.
Disclosure of Invention
The embodiment of the invention provides an information display method and a mobile terminal, and aims to solve the problem that when the mobile terminal is used for off-screen display, a part of screen area is required to be kept on for a long time under the condition that a screen is turned off, so that the power consumption of the mobile terminal is high.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an information display method applied to a mobile terminal, including:
if the screen of the mobile terminal is in a turned-off state, acquiring an image through a camera;
if the image has a face image, acquiring eye image characteristics in the face image;
judging whether the sight of the user faces the screen or not according to the eye image characteristics;
and if the sight of the user faces the screen, displaying preset content on the screen.
In a second aspect, an embodiment of the present invention further provides a mobile terminal, including:
the acquisition module is used for acquiring an image through a camera if the screen of the mobile terminal is in a turned-off state;
the acquisition module is used for acquiring eye image characteristics in the face image if the face image exists in the image;
the judging module is used for judging whether the sight of the user faces the screen or not according to the eye image characteristics;
and the display module is used for displaying preset content on the screen if the sight of the user faces the screen.
In a third aspect, an embodiment of the present invention further provides a mobile terminal, including a processor, a memory, and a computer program stored in the memory and operable on the processor, where the computer program, when executed by the processor, implements the steps of the information display method.
In the embodiment of the invention, if the screen of the mobile terminal is in a turned-off state, an image is collected through a camera; if the image has a face image, acquiring eye image characteristics in the face image; judging whether the sight of the user faces the screen or not according to the eye image characteristics; and if the sight of the user faces the screen, displaying preset content on the screen. Therefore, when the mobile terminal is turned off for displaying, the preset content is displayed only when the sight of the user faces the screen, so that part of the screen area can be prevented from being kept long and bright, and the power consumption of the mobile terminal is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart of an information display method according to an embodiment of the present invention;
FIG. 2 is a flow chart of another information display method provided by an embodiment of the invention;
FIG. 3 is a schematic diagram of an eye image feature provided by an embodiment of the invention;
FIG. 4 is a schematic diagram of another eye image feature provided by embodiments of the present invention;
FIG. 5 is a schematic view of a face in a frontal pose provided by an embodiment of the invention;
FIG. 6 is a schematic view of a human face in a first side-face pose provided by an embodiment of the invention;
FIG. 7 is a schematic view of a human face in a second side-face pose provided by an embodiment of the invention;
FIG. 8 is a schematic view of a face in a bottom-up position according to an embodiment of the present invention;
FIG. 9 is a schematic view of a face in a top-down position according to an embodiment of the present invention;
fig. 10 is a block diagram of a mobile terminal according to an embodiment of the present invention;
fig. 11 is a block diagram of another mobile terminal according to an embodiment of the present invention;
fig. 12 is a block diagram of another mobile terminal according to an embodiment of the present invention;
fig. 13 is a block diagram of another mobile terminal according to an embodiment of the present invention;
fig. 14 is a block diagram of another mobile terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of an information display method according to an embodiment of the present invention, and as shown in fig. 1, the method includes the following steps:
and 101, acquiring an image through a camera if the screen of the mobile terminal is in a turned-off state.
The screen of the mobile terminal may generally include two states, one is a lighting state, and in the lighting state, the mobile terminal may display various contents by lighting the screen; and the other is an off state in which the mobile terminal will not illuminate any element of the screen. Therefore, the screen of the mobile terminal is in a extinguished state, which can be understood as a state in which the screen of the mobile terminal is not lit.
The camera may be a camera on the mobile terminal, which is oriented in the same direction as the screen, for example, a front camera of a mobile phone, and the screen of the mobile terminal is in an off state, and the image is collected by the camera. For example, when the user takes the mobile phone out of the pocket, the screen of the mobile phone is in a turned-off state, and then the mobile phone may turn on the camera in the background to capture the image data.
And 102, if the image has a face image, acquiring the eye image characteristics in the face image.
The human face image may be a partial image which is present in an image collected by a camera and has human face five-sense organ characteristics, and the eye image characteristics may be a partial image which is present in the human face image and is matched with the characteristics of human eye organs. For example, after a user picks up a mobile phone, eyes face the mobile phone, at this time, the mobile phone starts a camera to recognize a shot image, and after recognition, it is determined that a face image, that is, an image of the face of the user exists in the image, and then, features of the eye image in the face image are recognized.
And 103, judging whether the sight of the user faces the screen or not according to the eye image characteristics.
The judging whether the sight of the user faces the screen or not according to the eye image features can be understood as that the mobile terminal analyzes the eye image features to judge whether the sight of the user faces the screen or not.
For example, the eye template in which the similarity is the greatest may be determined to match the eye image feature by matching the eye image feature with a pre-stored eye template to which a result of whether the user's line of sight is directed toward the screen has been previously assigned. However, the method has large calculation amount and low accuracy.
Or by grouping the gaze direction of the eye image features into ten categories: the method comprises the steps of collecting a large amount of sample data of eye image features of ten categories, training and learning the sample data through a certain machine learning algorithm to obtain a classifier, classifying the eye image features identified by the mobile terminal through the classifier, and making a decision on whether the sight line of a user faces the screen or not.
In addition, other determination methods such as determining the sight line of the user according to the distance from the center of the eyeball to the eye socket in the eye image feature may be used, as long as whether the sight line of the user faces the screen can be determined, and the determination method is not limited thereto.
And 104, if the sight line of the user faces the screen, displaying preset content on the screen.
If the line of sight of the user faces the screen, displaying the preset content on the screen may be, if the mobile terminal determines that the line of sight of the user faces the screen, lighting the screen by the mobile terminal to display the preset content. The preset content comprises information such as a clock, weather, a notification prompt, a short message and time. For example, when the user picks up the mobile phone and the face of the user faces the mobile phone screen, the mobile phone detects a portrait image and recognizes eye image features in the portrait image, and then the mobile phone determines that the sight of the user faces the mobile phone screen by analyzing the eye image features of the user, and lights the screen to display clock information.
It should be noted that, if the line of sight of the user is not directed to the screen, the determination may be continued, or the process may be ended, and fig. 1 in the embodiment of the present invention exemplifies that the process is ended.
In an embodiment of the present invention, the Mobile terminal may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or the like.
According to the embodiment of the invention, if the screen of the mobile terminal is in a turned-off state, an image is collected through a camera; if the image has a face image, acquiring eye image characteristics in the face image; judging whether the sight of the user faces the screen or not according to the eye image characteristics; and if the sight of the user faces the screen, displaying preset content on the screen. Therefore, when the mobile terminal is turned off for displaying, the preset content is displayed only when the sight of the user faces the screen, so that part of the screen area can be prevented from being kept long and bright, and the power consumption of the mobile terminal is saved.
Referring to fig. 2, fig. 2 is a flowchart of another information display method according to an embodiment of the present invention. The main difference between this embodiment and the previous embodiment is that this embodiment acquires an eyeball distance parameter of the eye image feature, and determines whether the line of sight of the user is directed to the screen according to the eyeball distance parameter. As shown in fig. 2, the method comprises the following steps:
The related description of step 201 has already been elaborated in the first embodiment, and is not repeated herein to avoid repetition.
Optionally, the step of acquiring an image through a camera if the screen of the mobile terminal is in an off state includes:
if the screen of the mobile terminal is in a turned-off state, detecting through a distance sensor;
and if the object is detected to exist within a preset distance range taking the mobile terminal as the center, acquiring an image through a camera.
The distance sensor may be an element for sensing a distance between the mobile terminal and an object to perform a predetermined function. For example, the distance sensor may be an optical distance sensor, an infrared distance sensor, an ultrasonic distance sensor, or the like; it should be understood that the embodiment is not limited to the type of the distance sensor, so that the mobile terminal can sense the distance to an object.
For example, if the preset distance range is set to 2 to 40 centimeters, after the user picks up the mobile phone, the user's face is close to the mobile phone and faces the screen of the mobile phone, and at this time, the mobile phone detects that the distance from the user's face to the mobile phone is 20 centimeters through the distance sensor, and within the preset range, the camera is started to collect an image. Further, the preset distance range may be 2 cm to 1 m; of course, the preset distance range may also be other distance ranges, and the preset distance range is not limited in this embodiment, and may be specifically set according to the performance of the mobile terminal or the requirements of the user, and the like.
Like this, mobile terminal just passes through the camera and gathers the image when detecting to have the object in predetermineeing the distance range, can make the user just open the camera when the screen-off demonstration is used to needs to save mobile terminal's consumption.
The related description of step 203 has already been elaborated in the first embodiment, and is not repeated herein to avoid repetition.
The eyeball distance parameter for acquiring the eye image feature may be that the mobile terminal measures and calculates distances from a position point on an eyeball of the eye image feature to other position points. Specifically, referring to fig. 3, for observation reference based on an angle of a plane, an eyeball center of the eye image feature may be a point o located at a center position of the eyeball image feature; the canthus can be the included angle of the joint of the upper orbit curve and the lower orbit, namely the points a and b of the two canthus which are respectively positioned at the left side and the right side of the orbit edge curve; the vertex of the upper orbit can be understood as the highest point c of the upper orbit rim curve and the vertex of the lower orbit can be understood as the highest point d of the upper orbit rim curve.
The horizontal distance value from the eyeball center of the eye image feature to the canthus may be a distance from the eyeball center of the eye image feature to the canthus in the horizontal direction; specifically, as shown in fig. 3, the direction of the connection line between c and d may be set as a vertical direction, and then the direction perpendicular to the connection line between c and d is a horizontal direction; and then, a first straight line parallel to a connecting line between c and d is made through the canthus a, and a second straight line parallel to the connecting line between c and d is made through the canthus b, so that the distance from o to the first straight line or the second straight line in the horizontal direction is the horizontal distance value from the eyeball center of the eye image characteristic to the canthus.
And the vertical distance value of the center of the eyeball to the orbital vertex of the eye image feature may be the distance of the center of the eyeball of the eye image feature in the vertical direction to the upper orbital vertex or the lower orbital vertex; specifically, as shown in fig. 4, the direction of the connection line between c and d may be set as a vertical direction, and then the direction perpendicular to the connection line between a and b is a horizontal direction; then, a third straight line parallel to the line between a and b is drawn through the upper orbital vertex c, and a fourth straight line parallel to the line between a and b is drawn through the lower orbital vertex d, so that the distance from o to the third straight line or the fourth straight line in the vertical direction is the horizontal distance value from the eyeball center to the corner of the eye image characteristic.
Optionally, after the step of acquiring an image by using a camera if the screen of the mobile terminal is in an off state, the method further includes:
if the image has a face image, recognizing a face gesture from the face image;
the step of judging whether the sight of the user faces the screen or not according to the eyeball distance parameter comprises the following steps:
and judging whether the sight of the user faces the screen or not according to the eyeball distance parameter and the face posture.
The human face posture can be understood as the posture of the human face presented at different angles; for example, when the face is turned to the left or right in the horizontal direction, the head is raised or lowered in the vertical direction, and the like, these situations may cause the face to be in different kinds of face poses.
The face pose is identified from the face image, and the face pose of the currently shot face image can be identified. It should be noted that there are many methods for recognizing the face pose from the face image, and the methods mainly include a model-based method, a face appearance-based method, and a classification-based method. Taking a model-based method as an example, the method generally defines the geometric structure of the human face feature points in advance, and determines parameters by extracting feature points and the mapping relationship of the model from three dimensions to two dimensions.
In addition, the judging whether the sight of the user faces the screen according to the eyeball distance parameter and the face posture may be that the mobile terminal judges whether the sight of the user faces the screen according to the eyeball distance parameter in the face posture.
Therefore, the mobile terminal judges the sight of the user according to the eyeball distance parameter and the face posture at the same time, and the judgment accuracy can be improved.
Optionally, the horizontal distance value includes a first horizontal distance value from the eyeball center to a first lateral corner of the eye image feature and/or a second horizontal distance value from the eyeball center to a second lateral corner of the eye image feature;
the step of judging whether the sight of the user faces the screen or not according to the eyeball distance parameter and the face posture comprises the following steps:
if the face pose is a front pose, the first horizontal distance value is greater than a first distance threshold, and the second horizontal distance value is greater than a second distance threshold, determining that the sight line of the user faces the screen, wherein the difference between the area of a first side face image and the area of a second side face image of the face image is smaller than a first preset area threshold under the front pose of the face image; alternatively, the first and second electrodes may be,
if the face pose is a first side face pose and the first horizontal distance value is smaller than the first distance threshold, determining that the sight line of the user faces the screen, wherein under the first side face pose, the area of a first side face image of the face image is larger than that of a second side face image, and the difference between the area of the first side face image and the area of the second side face image is larger than a second preset area threshold; alternatively, the first and second electrodes may be,
if the face pose is a second side face pose and the second horizontal distance value is smaller than the first distance threshold, determining that the sight line of the user faces the screen, wherein in the second side face pose, the area of a second side face image of the face image is larger than that of a first side face image, and the difference between the area of the second side face image and the area of the first side face image is larger than a second preset area threshold;
in this embodiment, the first side corner of the eye image feature may be a left side corner of the eye image feature, and the second side corner of the eye image feature may be a right side corner of the eye image feature.
Then, a first horizontal distance value from the center of the eyeball to a first lateral corner of the eye image feature may be understood as a first horizontal distance value from the center of the eyeball to a left corner of the eye image feature, and a second horizontal distance value from the center of the eyeball to a second lateral corner of the eye image feature may be understood as a second horizontal distance value from the center of the eyeball to a right corner of the eye image feature.
The front posture, as shown in fig. 5, can be understood as a human face posture presented by the head of the user facing the screen in the forward direction; the first side face gesture, as shown in fig. 6, may be understood as a face gesture presented after the head of the user rotates right facing the screen; the second side face pose, as shown in fig. 7, may be understood as a face pose that the user's head presents after turning left facing the screen.
In addition, the nose of the human face can be used as a dividing line, and the human face is divided into two sides, wherein the left side of the dividing line is a first side, and the right side of the dividing line is a second side; the area of the first side face image can be understood as the area of the face image positioned on the left side of the dividing line; then, the area of the face image located on the right side of the dividing line is the area of the second-side face image.
The first preset area threshold and the second preset area threshold can be a percentage parameter; the second preset area threshold and the third preset area threshold are both larger than the first preset area threshold; preferably, the first preset area threshold may be 5% to 20%, and the second preset area threshold may be 20%; of course, the first preset area threshold and the second preset area threshold may also be other values, which is not limited herein.
The first distance threshold and the second distance threshold are both preset parameters; the setting logic of the first distance threshold and the second distance threshold will be explained below.
Since the default position of the eyeball is usually located at the center of the eye socket, i.e. at half the distance between the two corners of the eye, when the user looks at the screen from different angles with different face poses in the horizontal direction, the eyeball will only shift to the left or right, the shift range of the eyeball is limited to the inside of the eye socket, and the maximum shift will usually not exceed half the distance between the two corners of the eye.
Therefore, it is preferable that the first distance threshold and the second distance threshold be set with reference to one-half of the eye corner distance of the eye image feature.
For example, in FIG. 3, the angular separation of the eye image features is X, X1 is the first horizontal distance value, and X2 is the second horizontal distance value; the first distance threshold may be X/2- α 1 and the second distance threshold may be X/2- α 2; alpha 1 and alpha 2 are respectively preset parameters, and the values of alpha 1 and alpha 2 can be adjusted according to experimental calculation.
If a certain user watches the mobile phone screen in the front, the mobile phone recognizes that the user is in the front posture, X1 is larger than X/2-alpha 1, and X2 is larger than X/2-alpha 2; the handset will determine that the user's gaze is directed towards the handset screen. If a user looks at the mobile phone screen after rotating to the right in a face-to-face mode, the mobile phone recognizes that the user is in the first side face posture, and X1 is smaller than X/2-alpha 1, the mobile phone determines that the sight line of the user faces the mobile phone screen. If a user looks at the mobile phone screen after rotating left facing the screen, the mobile phone recognizes that the user is in the second side face posture, and X2 is smaller than X/2- α 2, the mobile phone determines that the sight line of the user faces the mobile phone screen.
In this way, the mobile terminal judges the sight of the user by combining the first horizontal distance value and the second horizontal distance value under the front posture, the first side face posture and the third side face posture respectively; when the face of the user presents different face postures in the horizontal direction, the mobile terminal can judge the sight of the user more accurately.
Optionally, the vertical distance value comprises a first vertical distance value from the center of the eyeball to a vertex of the upper orbit, and/or a second vertical distance value from the center of the eyeball to a vertex of the lower orbit;
the step of judging whether the sight of the user faces the screen or not according to the eyeball distance parameter and the face posture comprises the following steps:
if the face posture is an upward-looking posture and the first vertical distance value is smaller than a third distance threshold value, determining that the sight line of the user faces the screen; alternatively, the first and second electrodes may be,
and if the face pose is an overlook pose and the second vertical distance value is smaller than the third distance threshold, determining that the sight line of the user faces the screen.
In this embodiment, the first vertical distance value may be a distance from the center of the eyeball to a vertex of an upper orbital edge curve of the eye image feature, and the second vertical distance value may be a distance from the center of the eyeball to a vertex of a lower orbital edge curve of the eye image feature.
As shown in fig. 8, the upward-looking posture may be a face posture that the head of the user faces upward and then faces back to the screen; as shown in fig. 9, the top-down posture can be understood as a human face posture presented to the screen after the head of the user is bent down.
The third distance threshold and the fourth distance threshold can be preset parameters; next, the setting logic of the third distance threshold and the fourth distance threshold will be described.
Since the default position of the eye is usually located in the center of the eye socket, i.e. at half the separation of the two corners of the eye, when the user looks at the screen from different angles with different facial poses in the vertical direction, the eye will only shift up or down, whereas the range of the shift of the eye is usually between the upper and lower eye sockets and the maximum shift is usually not more than half the maximum separation of the upper and lower eye sockets.
Thus, preferably, the third and fourth distance thresholds may be set with respect to one-half of the maximum separation of the upper and lower eye sockets of the eye image feature. Taking the eye image feature shown in fig. 4 as an example, if a user looks at the screen of the mobile phone after raising the head upwards facing the screen, the mobile phone recognizes that the user is in the upward-looking posture, and Y1 is smaller than Y/2- α 1, the mobile phone will determine that the line of sight of the user is facing the screen of the mobile phone. If a user faces the screen, lowers the head downwards and watches the mobile phone screen, the mobile phone recognizes that the user is in the upward-looking posture at the moment, and Y2 is smaller than Y/2-alpha 1, the mobile phone determines that the sight line of the user faces the mobile phone screen.
In this way, the mobile terminal judges the sight of the user by combining the first vertical distance value and the second vertical distance value under the upward-looking posture and the downward-looking posture respectively; when the face of the user presents different face postures in the vertical direction, the mobile terminal can judge the sight of the user more accurately.
And 204, judging whether the sight of the user faces the screen or not according to the eyeball distance parameter.
The step of judging whether the sight of the user faces the screen or not according to the eyeball distance parameter can be realized, and the mobile terminal judges whether the sight of the user faces the screen or not according to the eyeball distance parameter obtained through measurement.
And step 205, if the sight line of the user faces the screen, displaying preset content on the screen.
If the line of sight of the user is not directed to the screen, the determination may be continued, or the process may be ended, which is exemplified by ending the process in fig. 2 in the embodiment of the present invention. In addition, other related descriptions of step 205 have been described in detail in the first embodiment, and are not repeated herein to avoid repetition.
Optionally, a screen of the mobile terminal is provided with a fingerprint identification control, and the preset content includes a preset pattern for prompting a position of the fingerprint identification control;
the step of displaying preset content on the screen includes:
and displaying the preset pattern in a preset area of the screen, wherein the preset area is the screen area where the fingerprint identification control is located.
The preset pattern is displayed in the preset area of the screen, and the preset pattern may be displayed by lighting the preset area of the screen by the mobile terminal.
For example, after the user takes out the full-screen mobile phone, the sight line faces the screen of the full-screen mobile phone, and at this time, a fingerprint pattern is displayed in a certain area on the screen of the full-screen mobile phone, and the fingerprint pattern is the position of the fingerprint identification control under the screen of the mobile phone.
Of course, the preset pattern may be other patterns, which are not specifically limited, as long as the preset pattern can be used for prompting the position of the fingerprint identification control.
Therefore, the mobile terminal can display the preset pattern for prompting the position of the fingerprint identification control on the screen, so that a user can quickly know the position of the fingerprint identification control, and the efficiency of fingerprint unlocking is improved.
According to the embodiment of the invention, the mobile terminal can judge whether the sight of the user faces the screen or not according to the eye distance parameter, so that the judgment accuracy can be improved.
Referring to fig. 10, fig. 10 is a structural diagram of a mobile terminal according to an embodiment of the present invention, and as shown in fig. 10, the mobile terminal 1000 includes an acquisition module 1001, an acquisition module 1002, a judgment module 1003, and a display module 1004; wherein:
the acquisition module 1001 is used for acquiring an image through a camera if a screen of the mobile terminal is in a turned-off state;
an obtaining module 1002, configured to obtain an eye image feature in a face image if the face image exists in the image;
a judging module 1003, configured to judge whether the line of sight of the user faces the screen according to the eye image feature;
the display module 1004 is configured to display preset content on the screen if the line of sight of the user faces the screen.
Optionally, as shown in fig. 11, the determining module 1003 includes:
an obtaining unit 10031, configured to obtain an eyeball distance parameter of the eye image feature, where the eyeball distance parameter includes: a horizontal distance value from an eyeball center to an eye corner of the eye image feature, and/or a vertical distance value from the eyeball center to an orbital vertex of the eye image feature, the orbital vertex being a vertex of an upper orbit and/or a vertex of a lower orbit;
the determining unit 10032 is configured to determine whether the line of sight of the user faces the screen according to the eyeball distance parameter.
Optionally, as shown in fig. 12, the mobile terminal 1000 further includes:
an identifying module 1005, configured to identify a face pose from the face image if the face image exists in the image;
the determining unit 10032 is configured to determine whether the line of sight of the user faces the screen according to the eyeball distance parameter and the face pose.
Optionally, the horizontal distance value includes a first horizontal distance value from the eyeball center to a first lateral corner of the eye image feature and/or a second horizontal distance value from the eyeball center to a second lateral corner of the eye image feature;
the determining unit 10032 is configured to determine that the line of sight of the user faces the screen if the face pose is a front pose, the first horizontal distance value is greater than a first distance threshold, and the second horizontal distance value is greater than a second distance threshold, where in the front pose of the face image, a difference between an area of a first side face image and an area of a second side face image of the face image is smaller than a first preset area threshold; alternatively, the first and second electrodes may be,
the determining unit 10032 is configured to determine that the line of sight of the user faces the screen if the face pose is a first side face pose and the first horizontal distance value is smaller than the first distance threshold, where in the first side face pose, an area of a first side face image of the face image is larger than an area of a second side face image, and a difference between the area of the first side face image and the area of the second side face image is larger than a second preset area threshold; alternatively, the first and second electrodes may be,
the determining unit 10032 is configured to determine that the view of the user is oriented toward the screen if the face pose is a second side face pose and the second horizontal distance value is smaller than the first distance threshold, where the second side face image area of the face image is larger than the first side face image area and the difference between the second side face image area and the first side face image area is larger than the second preset area threshold.
Optionally, the vertical distance value comprises a first vertical distance value from the center of the eyeball to a vertex of the upper orbit, and/or a second vertical distance value from the center of the eyeball to a vertex of the lower orbit;
the determining unit 10032 is configured to determine that the line of sight of the user faces the screen if the face pose is an upward view pose and the first vertical distance value is smaller than a third distance threshold; alternatively, the first and second electrodes may be,
the determining unit 10032 is configured to determine that the line of sight of the user faces the screen if the face pose is an overhead pose and the second vertical distance value is smaller than the third distance threshold.
Optionally, as shown in fig. 13, the acquiring module 1001 includes:
a detection unit 10011, configured to detect, if the screen of the mobile terminal is in an off state, through a distance sensor;
the collecting unit 10012 is configured to collect an image through a camera if an object is detected within a preset distance range centered on the mobile terminal.
Optionally, a screen of the mobile terminal is provided with a fingerprint identification control, and the preset content includes a preset pattern for prompting a position of the fingerprint identification control;
the display module 1004 is configured to display the preset pattern in a preset area of the screen, where the preset area is a screen area where the fingerprint identification control is located.
The mobile terminal provided by the embodiment of the present invention can implement each process implemented by the mobile terminal in the above method embodiments, and is not described herein again to avoid repetition. And the same beneficial effects can be achieved.
Referring to fig. 14, fig. 14 is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention,
the mobile terminal 1400 includes, but is not limited to: radio frequency unit 1401, network module 1402, audio output unit 1403, input unit 1404, sensor 1405, display unit 1406, user input unit 1407, interface unit 1408, memory 1409, processor 1410, and power supply 1411. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 14 is not intended to be limiting of mobile terminals, and that a mobile terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The processor 1410 is configured to acquire an image through a camera if the screen of the mobile terminal is in an off state;
if the image has a face image, acquiring eye image characteristics in the face image;
judging whether the sight of the user faces the screen or not according to the eye image characteristics;
and if the sight of the user faces the screen, displaying preset content on the screen.
Optionally, the determining, by the processor 1410, whether the line of sight of the user is directed to the screen according to the eye image feature includes:
acquiring eyeball distance parameters of the eye image features, wherein the eyeball distance parameters comprise: a horizontal distance value from an eyeball center to an eye corner of the eye image feature, and/or a vertical distance value from the eyeball center to an orbital vertex of the eye image feature, the orbital vertex being a vertex of an upper orbit and/or a vertex of a lower orbit;
and judging whether the sight of the user faces the screen or not according to the eyeball distance parameter.
Optionally, the processor 1410 is further configured to identify a face pose from the face image if the face image exists in the image;
the determining, by the processor 1410, whether the line of sight of the user is directed to the screen according to the eyeball distance parameter includes:
and judging whether the sight of the user faces the screen or not according to the eyeball distance parameter and the face posture.
Optionally, the horizontal distance value includes a first horizontal distance value from the eyeball center to a first lateral corner of the eye image feature and/or a second horizontal distance value from the eyeball center to a second lateral corner of the eye image feature;
the determining, by the processor 1410, whether the line of sight of the user is directed to the screen according to the eyeball distance parameter and the face pose includes:
if the face pose is a front pose, the first horizontal distance value is greater than a first distance threshold, and the second horizontal distance value is greater than a second distance threshold, determining that the sight line of the user faces the screen, wherein the difference between the area of a first side face image and the area of a second side face image of the face image is smaller than a first preset area threshold under the front pose of the face image;
if the face pose is a first side face pose and the first horizontal distance value is smaller than the first distance threshold, determining that the sight line of the user faces the screen, wherein under the first side face pose, the area of a first side face image of the face image is larger than that of a second side face image, and the difference between the area of the first side face image and the area of the second side face image is larger than a second preset area threshold;
if the face pose is a second side face pose, and the second horizontal distance value is smaller than the first distance threshold value, determining that the sight line of the user faces the screen, wherein under the second side face pose, the area of a second side face image of the face image is larger than that of a first side face image, and the difference between the area of the second side face image and that of the first side face image is larger than a second preset area threshold value.
Optionally, the vertical distance value comprises a first vertical distance value from the center of the eyeball to a vertex of the upper orbit, and/or a second vertical distance value from the center of the eyeball to a vertex of the lower orbit;
the determining, by the processor 1410, whether the line of sight of the user is directed to the screen according to the eyeball distance parameter and the face pose includes:
if the face posture is an upward-looking posture and the first vertical distance value is smaller than a third distance threshold value, determining that the sight line of the user faces the screen;
and if the face pose is an overlook pose and the second vertical distance value is smaller than the third distance threshold, determining that the sight line of the user faces the screen.
Optionally, the acquiring, by the processor 1410, an image through a camera if the screen of the mobile terminal is in an off state includes:
if the screen of the mobile terminal is in a turned-off state, detecting through a distance sensor;
and if the object is detected to exist within a preset distance range taking the mobile terminal as the center, acquiring an image through a camera.
Optionally, a screen of the mobile terminal is provided with a fingerprint identification control, and the preset content includes a preset pattern for prompting a position of the fingerprint identification control;
the displaying of preset content on the screen performed by the processor 1410 includes:
and displaying the preset pattern in a preset area of the screen, wherein the preset area is the screen area where the fingerprint identification control is located.
The mobile terminal 1400 saves power consumption of the mobile terminal, and has the same beneficial effects as the method embodiments.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 1401 may be configured to receive and transmit signals during a message transmission or call process, and specifically, receive downlink data from a base station and then process the received downlink data to the processor 1410; in addition, the uplink data is transmitted to the base station. In general, radio unit 1401 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. The radio unit 1401 may also communicate with a network and other devices via a wireless communication system.
The mobile terminal provides the user with wireless broadband internet access through the network module 1402, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.
The audio output unit 1403 can convert audio data received by the radio frequency unit 1401 or the network module 1402 or stored in the memory 1409 into an audio signal and output as sound. Also, the audio output unit 1403 may also provide audio output related to a specific function performed by the mobile terminal 1400 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 1403 includes a speaker, a buzzer, a receiver, and the like.
The input unit 1404 is for receiving an audio or video signal. The input Unit 1404 may include a Graphics Processing Unit (GPU) 14041 and a microphone 14042, the Graphics processor 14041 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 1406. The image frames processed by the graphics processor 14041 may be stored in the memory 1409 (or other storage medium) or transmitted via the radio unit 1401 or the network module 1402. The microphone 14042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 1401 in case of a phone call mode.
The mobile terminal 1400 also includes at least one sensor 1405, 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 14061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 14061 and/or the backlight when the mobile terminal 1400 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 1405 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 1406 is used to display information input by the user or information provided to the user. The Display unit 1406 may include a Display panel 14061, and the Display panel 14061 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 1407 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 1407 includes a touch panel 14071 and other input devices 14072. The touch panel 14071, also referred to as a touch screen, may collect touch operations by a user (e.g., operations by a user on or near the touch panel 14071 using a finger, a stylus, or any other suitable object or attachment). The touch panel 14071 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 1410, receives a command from the processor 1410, and executes the command. In addition, the touch panel 14071 can be implemented by various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 14071, the user input unit 1407 may include other input devices 14072. In particular, the other input devices 14072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein.
Further, the touch panel 14071 may be overlaid on the display panel 14061, and when the touch panel 14071 detects a touch operation on or near the touch panel 14071, the touch operation is transmitted to the processor 1410 to determine the type of the touch event, and then the processor 1410 provides a corresponding visual output on the display panel 14061 according to the type of the touch event. Although in fig. 14, the touch panel 14071 and the display panel 14061 are two independent components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 14071 and the display panel 14061 may be integrated to implement the input and output functions of the mobile terminal, which is not limited herein.
The interface unit 1408 is an interface through which an external device is connected to the mobile terminal 1400. 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. Interface unit 1408 may be used to receive input from external devices (e.g., data information, power, etc.) and transmit the received input to one or more elements within mobile terminal 1400 or may be used to transmit data between mobile terminal 1400 and external devices.
The memory 1409 may be used to store software programs as well as various data. The memory 1409 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for 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. In addition, the memory 1409 can include high speed random access memory and can 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 1410 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 1409 and calling data stored in the memory 1409, thereby performing overall monitoring of the mobile terminal. Processor 1410 may include one or more processing units; preferably, the processor 1410 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 processor 1410.
The mobile terminal 1400 may further include a power supply 1411 (e.g., a battery) for powering the various components, and preferably, the power supply 1411 may be logically connected to the processor 1410 via a power management system that may enable managing charging, discharging, and power consumption management functions.
In addition, the mobile terminal 1400 includes some functional modules that are not shown, and are not described herein again.
Preferably, an embodiment of the present invention further provides a mobile terminal, including a processor 1410, a memory 1409, and a computer program stored in the memory 1409 and capable of running on the processor 1410, where the computer program, when executed by the processor 1410, implements the processes of the above-mentioned information display method embodiment, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here.
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.
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 (7)
1. An information display method is applied to a mobile terminal, and is characterized by comprising the following steps:
if the screen of the mobile terminal is in a turned-off state, acquiring an image through a camera;
if the image has a face image, acquiring eye image characteristics in the face image;
judging whether the sight of the user faces the screen or not according to the eye image characteristics;
if the sight of the user faces the screen, displaying preset content on the screen;
the step of judging whether the sight line of the user faces the screen or not according to the eye image characteristics comprises the following steps:
acquiring eyeball distance parameters of the eye image features, wherein the eyeball distance parameters comprise: a horizontal distance value from an eyeball center to an angle of the eye for the eye image feature, a vertical distance value from the eyeball center to an orbital vertex for the eye image feature, the orbital vertex being a vertex of the upper orbit and/or a vertex of the lower orbit;
judging whether the sight of the user faces the screen or not according to the eyeball distance parameter;
if the screen of the mobile terminal is in a turned-off state, after the step of collecting the image through the camera, the method further comprises the following steps:
if the image has a face image, recognizing a face gesture from the face image;
the step of judging whether the sight of the user faces the screen or not according to the eyeball distance parameter comprises the following steps:
and judging whether the sight of the user faces the screen or not according to the eyeball distance parameter and the face posture.
2. The method of claim 1,
the step of determining whether the line of sight of the user is directed to the screen according to the eyeball distance parameter and the face pose comprises:
if the face pose is a front pose, the first horizontal distance value is greater than a first distance threshold, and the second horizontal distance value is greater than a second distance threshold, determining that the sight line of the user faces the screen, wherein the difference between the area of a first side face image and the area of a second side face image of the face image is smaller than a first preset area threshold under the front pose of the face image;
if the face pose is a first side face pose and the first horizontal distance value is smaller than the first distance threshold, determining that the sight line of the user faces the screen, wherein under the first side face pose, the area of a first side face image of the face image is larger than that of a second side face image, and the difference between the area of the first side face image and the area of the second side face image is larger than a second preset area threshold;
if the face pose is a second side face pose and the second horizontal distance value is smaller than the first distance threshold, determining that the sight line of the user faces the screen, wherein in the second side face pose, the area of a second side face image of the face image is larger than that of a first side face image, and the difference between the area of the second side face image and the area of the first side face image is larger than a second preset area threshold;
the vertical distance values comprise a first vertical distance value from the eyeball center to a vertex of the upper eyebox and a second vertical distance value from the eyeball center to a vertex of the lower eyebox, and the step of determining whether the line of sight of the user is directed to the screen according to the eyeball distance parameter and the face pose comprises:
if the face posture is an upward-looking posture and the first vertical distance value is smaller than a third distance threshold value, determining that the sight line of the user faces the screen;
and if the face pose is an overlook pose and the second vertical distance value is smaller than the third distance threshold, determining that the sight line of the user faces the screen.
3. The method according to claim 1, wherein the step of collecting the image through the camera if the screen of the mobile terminal is in an off state comprises:
if the screen of the mobile terminal is in a turned-off state, detecting through a distance sensor;
and if the object is detected to exist within a preset distance range taking the mobile terminal as the center, acquiring an image through a camera.
4. A mobile terminal, comprising:
the acquisition module is used for acquiring an image through a camera if the screen of the mobile terminal is in a turned-off state;
the acquisition module is used for acquiring eye image characteristics in the face image if the face image exists in the image;
the judging module is used for judging whether the sight of the user faces the screen or not according to the eye image characteristics;
the display module is used for displaying preset content on the screen if the sight of the user faces the screen;
the judging module comprises:
an obtaining unit, configured to obtain an eyeball distance parameter of the eye image feature, where the eyeball distance parameter includes: a horizontal distance value from an eyeball center to an angle of the eye for the eye image feature, a vertical distance value from the eyeball center to an orbital vertex for the eye image feature, the orbital vertex being a vertex of the upper orbit and/or a vertex of the lower orbit;
the judging unit is used for judging whether the sight of the user faces the screen or not according to the eyeball distance parameter;
the mobile terminal further includes:
the recognition module is used for recognizing a face gesture from the face image if the face image exists in the image;
the judging unit is used for judging whether the sight of the user faces the screen or not according to the eyeball distance parameter and the face posture.
5. The mobile terminal of claim 4,
the horizontal distance value comprises a first horizontal distance value from the eyeball center to a first side corner of the eye image feature and a second horizontal distance value from the eyeball center to a second side corner of the eye image feature, and the judging unit is used for determining that the sight line of the user faces the screen if the face pose is a front pose, the first horizontal distance value is greater than a first distance threshold value and the second horizontal distance value is greater than a second distance threshold value, wherein the difference between the area of a first side face image and the area of a second side face image of the face image is smaller than a first preset area threshold value in the front pose;
the judging unit is configured to determine that the line of sight of the user faces the screen if the face pose is a first side face pose and the first horizontal distance value is smaller than the first distance threshold, where in the first side face pose, a first side face image area of the face image is larger than a second side face image area, and a difference between the first side face image area and the second side face image area is larger than a second preset area threshold; the judging unit is configured to determine that the line of sight of the user faces the screen if the face pose is a second side face pose and the second horizontal distance value is smaller than the first distance threshold, where in the second side face pose, a second side face image area of the face image is larger than a first side face image area, and a difference between the second side face image area and the first side face image area is larger than a second preset area threshold;
the vertical distance value comprises a first vertical distance value from the eyeball center to the vertex of the upper eye socket and a second vertical distance value from the eyeball center to the vertex of the lower eye socket, and the judging unit is used for determining that the sight line of the user faces the screen if the face posture is an upward posture and the first vertical distance value is smaller than a third distance threshold; the judging unit is used for determining that the sight of the user faces the screen if the face gesture is a top view gesture and the second vertical distance value is smaller than the third distance threshold.
6. The mobile terminal of claim 4, wherein the acquisition module comprises:
the detection unit is used for detecting through a distance sensor if the screen of the mobile terminal is in a turned-off state;
and the acquisition unit is used for acquiring images through the camera if an object is detected to exist within a preset distance range taking the mobile terminal as a center.
7. A mobile terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, the processor implementing the steps in the information display method according to any one of claims 1-3 when executing the computer program.
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