CN104460999A - Method and device for recognizing gesture with inflection point - Google Patents
Method and device for recognizing gesture with inflection point Download PDFInfo
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- CN104460999A CN104460999A CN201410715486.7A CN201410715486A CN104460999A CN 104460999 A CN104460999 A CN 104460999A CN 201410715486 A CN201410715486 A CN 201410715486A CN 104460999 A CN104460999 A CN 104460999A
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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]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
- G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
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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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- User Interface Of Digital Computer (AREA)
Abstract
The embodiment of the invention relates to the technical field of touch recognition, in particular to a method and device for recognizing a gesture with an inflection point. The method includes the steps that the gesture drawn by a user is recognized, and whether the gesture drawn by the user contains the preset inflection point or not is determined; when it is recognized that the gesture drawn by the user contains the preset inflection point, the gesture drawn by the user is displayed; whether the gesture drawn by the user is a preset gesture or not is recognized, and a preset application program corresponding to the preset gesture is started according to the recognition result. By the adoption of the method, when the user draws the gesture, the gesture drawn by the user is recognized, the gesture drawn by the user is selectively displayed according to the recognition result, the gesture recognition efficiency of a mobile device is improved, and the requirements of the user are met.
Description
Technical field
The embodiment of the present invention relates to touch recognition technical field, particularly relates to a kind of gesture identification method with flex point and device.
Background technology
Intelligent mobile terminal, as smart mobile phone and panel computer etc. are more and more universal in the last few years, touch-screen is the vitals in intelligent mobile terminal, identifies user's gesture on the touchscreen, to respond the common function that user operation has become intelligent mobile terminal.
A lot of smart mobile phone can both carry out the gesture identification of user at present, and user can arrange self-defined gesture according to self-demand.But, existing gesture identification method draws in the process of gesture the gesture showing user and draw user, and can carry out the identification of gesture after user has drawn gesture, namely, existing gesture identification method more simply can not be met consumers' demand, and the efficiency of gesture identification is lower.
Summary of the invention
The object of the invention is to propose a kind of gesture identification method with flex point and device, to improve the efficiency of gesture identification, and meet consumers' demand.
On the one hand, embodiments provide a kind of gesture identification method with flex point, comprising:
Identify the gesture that user draws, determine whether the gesture that described user draws comprises default flex point;
When the gesture identifying described user drafting comprises default flex point, show the gesture that described user draws;
Identify whether the gesture that described user draws is default gesture, and start default application program corresponding to default gesture according to recognition result.
On the other hand, embodiments provide a kind of gesture identifying device with flex point, comprising:
Flex point recognition unit, for identifying the gesture that user draws, determines whether the gesture that described user draws comprises default flex point;
Gesture display unit, during for comprising default flex point in the gesture identifying described user drafting, shows the gesture that described user draws;
Gesture identification unit, for identifying whether the gesture that described user draws is default gesture
Program start unit, presets default application program corresponding to gesture for starting according to recognition result.
The gesture identification method treating flex point provided in the embodiment of the present invention and device, can draw in the process of gesture user and carry out gesture identification operation in real time, improve the efficiency of gesture identification, meet user's request.In the gesture identification method of the band flex point provided in the embodiment of the present invention, draw in the process of gesture user, only identify user draw gesture comprise default flex point just show user drafting gesture, also just identify whether the gesture that user draws is default gesture further, and start default application program corresponding to default gesture according to recognition result.The method optionally shows the gesture of user's drafting according to recognition result, improves the gesture identification efficiency of mobile device, meets user's request.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms a part for the embodiment of the present invention, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the realization flow figure of the gesture identification method of the band flex point provided in first embodiment of the invention;
Fig. 2 is the schematic diagram of the gesture that the user provided in first embodiment of the invention draws;
Fig. 3 is the realization flow figure of the gesture identification method of the band flex point provided in second embodiment of the invention;
Fig. 4 is the realization flow figure of the gesture identification method of the band flex point provided in third embodiment of the invention;
Fig. 5 is the schematic diagram of the coordinate system set up in advance in mobile device in third embodiment of the invention;
Fig. 6 is the structural representation of the gesture identifying device of the band flex point provided in fourth embodiment of the invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the embodiment of the present invention is carried out more in detail and complete explanation.Be understandable that, specific embodiment described herein is only for explaining the embodiment of the present invention, but not the restriction to the embodiment of the present invention.It also should be noted that, for convenience of description, illustrate only the part relevant to the embodiment of the present invention in accompanying drawing but not full content.
First embodiment:
Fig. 1 is the realization flow figure of the gesture identification method of the band flex point provided in first embodiment of the invention, the method can be performed by the gesture identifying device of band flex point, wherein this device can by software and/or hardware implementing, and the part that can be used as mobile device is built in mobile device inside.As shown in Figure 1, this realization flow comprises:
The gesture that step 11, identification user draw, determines whether the gesture that described user draws comprises default flex point.
Before user draws gesture, default gesture is set in a mobile device in advance, and determines default flex point according to presetting gesture.Wherein, default gesture manually can be arranged for user, also can pre-set in mobile device.Draw in the process of gesture user, obtain the unique point that user draws, and determine whether the gesture that user draws comprises default flex point according to the unique point that user draws.
Wherein, identify the gesture that user draws, determine whether the gesture that described user draws comprises default flex point, can comprise:
A, the current signature point obtained in the gesture of user's drafting, and the previous unique point of current signature point is defined as second feature point, and the previous unique point of second feature point is defined as fisrt feature point.
When user draws gesture, each unique point that user draws successively forms the gesture that user draws.Fig. 2 is the schematic diagram of the gesture that the user provided in first embodiment of the invention draws, as shown in Figure 2, after user has drawn current signature point P, the previous unique point N of current signature point P is defined as second feature point, and the previous unique point M of second feature point N is defined as fisrt feature point.
B, be greater than the horizontal ordinate of fisrt feature point and second feature point at the horizontal ordinate of current signature point, and when the ordinate of second feature point is greater than the ordinate of fisrt feature point and current signature point, determine that the gesture that user draws comprises default flex point; Otherwise, determine that the gesture that user draws does not comprise default flex point.
Obtain the coordinate of fisrt feature point M, second feature point N and current signature point P, according to the coordinate of these three unique points, judge whether the horizontal ordinate of current signature point P is greater than the horizontal ordinate of fisrt feature point M and the second maximum unique point N, if, then continue to judge whether the ordinate of second feature point N is greater than the ordinate of fisrt feature point M and current signature point P, if so, then determine that the gesture that user draws comprises default flex point, and second feature point N is described default flex point; Otherwise, determine that the gesture that user has drawn does not comprise default flex point.
Wherein, when the horizontal ordinate of current signature point P is not more than the horizontal ordinate of fisrt feature point M and second feature point N, in the gesture that user has drawn, default flex point is not comprised.
Step 12, identify described user draw gesture comprise default flex point time, show described user draw gesture.
The gesture that display user draws can comprise: the gesture that display user has drawn, and after user continues to draw gesture, also shows the gesture that user newly draws.
Step 13, identify whether the gesture that described user draws is default gesture, and start according to recognition result and preset default application program corresponding to gesture.
Wherein, start according to recognition result and preset default application program corresponding to gesture, can comprise:
A, when identifying gesture that described user draws for presetting gesture, starting and presetting default application program corresponding to gesture.
The mapping relations between default gesture and default application program are also previously provided with in mobile device, identify user draw gesture for preset gesture time, also according to these mapping relations, determine the default application program that default gesture is corresponding, and start described default application program.That is, in the method, user can preset gesture by drawing, and triggers to start and presets default application program corresponding to gesture.
B, when identifying gesture that described user draws for presetting gesture, the gesture stopping the described user of display to draw also stops gesture identification.
When identifying gesture that user draws for presetting gesture, that is, identify gesture that user draws when being other gestures outside default gesture, stop the gesture that display user draws, and stop gesture identification.
The gesture identification method of the band flex point provided in first embodiment of the invention, after user draws default gesture, start the default application program corresponding with default gesture, but drawing user successfully presets before gesture, the display interface of mobile device does not show the gesture path of user's drafting, track drafting is shown after drawing out the default flex point in default gesture, the gesture of drawing as user exceeds the requirement of default gesture, namely the gesture that user draws is not, when presetting gesture, stop gesture identification and hide track drafting.The method optionally shows the gesture of user's drafting according to recognition result, improves the gesture identification efficiency of mobile device, meets user's request.
Second embodiment:
Fig. 3 is the realization flow figure of the gesture identification method of the band flex point provided in second embodiment of the invention, the method can be performed by the gesture identifying device of band flex point, wherein this device can by software and/or hardware implementing, and the part that can be used as mobile device is built in mobile device inside.As shown in Figure 3, this realization flow comprises:
The gesture that step 21, identification user draw, determines whether the gesture that described user draws comprises default flex point; If so, continue to perform step 22; Otherwise redirect performs step 24.
Before user draws gesture, default gesture is set in a mobile device in advance, and determines default flex point according to presetting gesture.Wherein, default gesture manually can be arranged for user, also can pre-set in mobile device.Draw in the process of gesture user, obtain the unique point that user draws, and determine whether the gesture that user draws comprises default flex point according to the unique point that user draws.
It should be noted that, the gesture that user has drawn does not comprise default flex point and can comprise: do not comprise any flex point in the gesture that user has drawn, does not now show the gesture that user draws, and continues the gesture obtaining user's drafting; The gesture that user has drawn comprises flex point, and the flex point comprised is not for presetting flex point.
Step 22, show described user draw gesture.
The gesture that display user draws can comprise: the gesture that display user has drawn, and after user continues to draw gesture, also shows the gesture that user newly draws.
Step 23, identify whether the gesture that described user draws is default gesture, start according to recognition result and preset default application program corresponding to gesture, and stop gesture identification.
Wherein, identify whether the gesture that described user draws is default gesture, can comprise: determine whether only include a default flex point in the gesture that described user draws, and do not comprise other flex point except default flex point, if so, then determine that the gesture that described user draws is default gesture; Otherwise, determine that the gesture that user draws is not default gesture.
If preset gesture to only include a default flex point, then only include a default flex point in the gesture can drawn user, and when not comprising other flex point except default flex point, determine that the gesture that described user draws is default gesture; When can comprise other flex point in the gesture that the gesture of user's drafting comprises multiple default flex point or user's drafting, determine that the gesture that user draws is not default gesture.
Step 24, identify described user draw gesture comprise flex point, and the flex point comprised for preset flex point time, do not show the gesture path that user has drawn, and stop gesture identification.
Comprise flex point in the gesture identifying user's drafting, and the flex point comprised is not when presetting flex point, then can determines that the gesture that user draws not is default gesture, now not show the gesture path that user has drawn, and stop gesture identification.
The gesture identification method of the band flex point provided in second embodiment of the invention, draw in the process of gesture user, the gesture that Real time identification user draws, before the gesture identifying user's drafting comprises default flex point, screen does not show the gesture path that user draws, when the gesture that user draws occurs presetting flex point, and the gesture that display user draws, when the gesture of the drafting of user exceeds the gesture scope of default gesture, hide the gesture of user's drafting and stop gesture identification.
3rd embodiment:
Fig. 4 is the realization flow figure of the gesture identification method of the band flex point provided in third embodiment of the invention, the method can be performed by the gesture identifying device of band flex point, wherein this device can by software and/or hardware implementing, and the part that can be used as mobile device is built in mobile device inside.As shown in Figure 4, preset gesture in the present embodiment for beat hook gesture, this realization flow comprises:
The coordinate of the current signature point that step 31, acquisition user draw.
Fig. 5 is the schematic diagram of the coordinate system set up in advance in mobile device in third embodiment of the invention, as shown in Figure 5, the summit in the upper left corner of mobile device can be set to true origin, level direction is to the right set to the forward of abscissa axis X, direction is straight down set to the forward of axis of ordinates Y.When user draws gesture on the screen of the mobile device, obtain the coordinate of the current signature point that user draws, as obtained the coordinate of current signature point A.
Step 32, by the coordinate of current signature point stored in preset coordinate points queue.
Also be previously provided with coordinate points queue in mobile device, for storing the coordinate of each point in gesture that user draws, and the maximum length of coordinate points queue is 3.By the coordinate of current signature point stored in before the coordinate points queue preset, also comprise: when the length of coordinate points queue is less than 3, by the coordinate of current signature point directly stored in coordinate points queue; When the length of coordinate points queue equals 3, from coordinate points queue, delete a coordinate, and by the coordinate of current signature point stored in coordinate points queue.
Step 33, determine whether the length of coordinate points queue equals 3, if so, continue to perform step 34; Otherwise, return and perform step 31.
When the length of coordinate points queue is less than 3, continue the new current signature point obtaining user's drafting.
The average coordinates of 3 unique points in the queue of step 34, coordinates computed point.
Wherein, after calculating the average coordinates of 3 unique points in coordinate points queue, continue to perform step 35, also redirect performs step 314.
Step 35, by obtain average coordinates stored in preset average coordinates queue.
Also be previously provided with average coordinates queue in mobile device, and the maximum length of average coordinates queue is 3.By the average coordinates of acquisition in step 34 stored in before average coordinates queue, also comprise: when the length of average coordinates queue is less than 3, by the average coordinates of acquisition directly stored in coordinate points queue; When the length of average coordinates queue equals 3, from average coordinates queue, delete a coordinate, and by average coordinates stored in average coordinates queue.
Step 36, determine whether the length of average coordinates queue equals 3, if so, continue to perform step 37; Otherwise, return and perform step 31.
Step 37, judge that presetting the number of flex point in the gesture path that user has drawn is 0 or 1, if 0, continue to perform step 38; If 1, redirect performs step 315.
Horizontal ordinate sequence number maximum in step 38, the queue of acquisition average coordinates.
It should be noted that, sequence number at first stored in the average coordinates of average coordinates queue is minimum, and the sequence number finally stored in the average coordinates of average coordinates queue is maximum, as, according to the sequencing stored in average coordinates queue, in average coordinates queue, the order of 3 average coordinates is followed successively by 1,2 and 3.
Step 39, determine whether maximum horizontal ordinate sequence number is 3, if so, continue to perform step 310; Otherwise redirect performs step 313.
Ordinate sequence number maximum in step 310, the queue of acquisition average coordinates.
Step 311, determine that maximum ordinate sequence number is 1,2 or 3, if 2, continue to perform step 312; If 1, redirect performs step 313; If 3, continue to perform step 314
Step 312, determine that the number of the flex point comprised in the gesture path that user has drawn is 1, and show the gesture path that user draws.
That is, determine that the gesture path that user draws comprises default flex point, and show the gesture path of user's drafting.
Step 313, gesture mistake, stop gesture identification, and empty coordinate points queue and average coordinates queue.
Step 314, a coordinate points of deleting in coordinate queue, and return execution step 31.
Ordinate sequence number maximum in step 315, the queue of acquisition average coordinates.
Step 316, determine whether maximum ordinate sequence number is 1, if so, continue to perform step 317; Otherwise, perform step 313.
Horizontal ordinate sequence number maximum in step 317, the queue of acquisition average coordinates.
Step 318, determine whether maximum horizontal ordinate sequence number is 3, if so, redirect performs step 314; Otherwise redirect performs step 313.
In the gesture identification method of the band flex point provided in third embodiment of the invention, preset gesture for beat hook gesture, coordinate points queue and average coordinates queue is previously provided with in mobile device, the wherein coordinate points of coordinate points queue record user touch screen, the mean value coordinates of three point coordinate in the queue of average coordinates queue record coordinate points, the average coordinates in average coordinates queue is adopted to determine whether comprise default flex point in the gesture of drawing, and determine whether the gesture of drawing is default gesture, improves the accuracy rate of gesture identification.The method obtains three unique points from the gesture of drawing, and according to the gesture that the coordinate identification of unique point is drawn.
Fourth embodiment of the invention is this device embodiment, and the inventive method embodiment and device embodiment belong to same design, and the detail content of not detailed description in device embodiment can with reference to said method embodiment.
4th embodiment:
Fig. 6 is the structural representation of the gesture identifying device of the band flex point provided in fourth embodiment of the invention, as shown in Figure 6, the gesture identifying device of this band flex point can comprise: flex point recognition unit 41, for identifying the gesture that user draws, determine whether the gesture that described user draws comprises default flex point; Gesture display unit 42, during for comprising default flex point in the gesture identifying described user drafting, shows the gesture that described user draws; Gesture identification unit 43, for identifying whether the gesture that described user draws is default gesture; Program start unit 44, presets default application program corresponding to gesture for starting according to recognition result.
Wherein, this device can also comprise: not display unit, and for comprising flex point in the gesture identifying described user drafting, and the flex point comprised is not, when presetting flex point, do not show the gesture path that user has drawn, and stop gesture identification.
Wherein, program start unit 44 can comprise: program promoter unit, for when identifying gesture that described user draws for presetting gesture, starting and presetting default application program corresponding to gesture; Stopping display subelement, for not being when presetting gesture in the gesture identifying described user drafting, stopping the gesture of the described user's drafting of display also to stop gesture identification.
Wherein, flex point recognition unit 41 can comprise: unique point obtains subelement, for obtaining the current signature point in the gesture of user's drafting, and the previous unique point of current signature point is defined as second feature point, and the previous unique point of second feature point is defined as fisrt feature point; Flex point recognin unit, for being greater than the horizontal ordinate of fisrt feature point and second feature point at the horizontal ordinate of current signature point, and the ordinate of second feature point is when being greater than the ordinate of fisrt feature point and current signature point, determine that the gesture that user draws comprises default flex point; Otherwise, determine that the gesture that user draws does not comprise default flex point.
Wherein, gesture identification unit 43 specifically may be used for: determine whether only include a default flex point in the gesture that described user draws, and do not comprise other flex point except default flex point, if so, then determines that the gesture that described user draws is default gesture; Otherwise, determine that the gesture that user draws is not default gesture.
The gesture identifying device of the band flex point provided in fourth embodiment of the invention, draw in the process of gesture user, the gesture that Real time identification user draws, and the gesture optionally showing user's drafting according to recognition result, improve the gesture identification efficiency of mobile device, meet user's request.
Be only the preferred embodiment of the embodiment of the present invention described in upper, be not limited to the embodiment of the present invention, to those skilled in the art, the embodiment of the present invention can have various change and change.Any amendment done within all spirit in the embodiment of the present invention and principle, equivalent replacement, improvement etc., within the protection domain that all should be included in the embodiment of the present invention.
Claims (10)
1. the gesture identification method with flex point, is characterized in that, comprising:
Identify the gesture that user draws, determine whether the gesture that described user draws comprises default flex point;
When the gesture identifying described user drafting comprises default flex point, show the gesture that described user draws;
Identify whether the gesture that described user draws is default gesture, and start default application program corresponding to default gesture according to recognition result.
2. method according to claim 1, is characterized in that, identifies the gesture that user draws, and after determining whether gesture that described user draws comprises default flex point, also comprises:
Comprise flex point in the gesture identifying described user drafting, and the flex point comprised is not, when presetting flex point, do not show the gesture path that user has drawn, and stop gesture identification.
3. method according to claim 1, is characterized in that, starts and presets default application program corresponding to gesture, comprising according to recognition result:
When identifying gesture that described user draws for presetting gesture, starting and presetting default application program corresponding to gesture;
When identifying gesture that described user draws for presetting gesture, the gesture stopping the described user of display to draw also stops gesture identification.
4. method according to claim 1, is characterized in that, identifies the gesture that user draws, determines whether the gesture that described user draws comprises default flex point, comprising:
Obtain the current signature point in the gesture of user's drafting, and the previous unique point of current signature point is defined as second feature point, and the previous unique point of second feature point is defined as fisrt feature point;
Be greater than the horizontal ordinate of fisrt feature point and second feature point at the horizontal ordinate of current signature point, and when the ordinate of second feature point is greater than the ordinate of fisrt feature point and current signature point, determine that the gesture that user draws comprises default flex point; Otherwise, determine that the gesture that user draws does not comprise default flex point.
5. method according to claim 1, is characterized in that, identifies whether the gesture that described user draws is default gesture, comprising:
Determine whether only include a default flex point in the gesture that described user draws, and do not comprise other flex point except default flex point, if so, then determine that the gesture that described user draws is default gesture; Otherwise, determine that the gesture that user draws is not default gesture.
6. the gesture identifying device with flex point, is characterized in that, comprising:
Flex point recognition unit, for identifying the gesture that user draws, determines whether the gesture that described user draws comprises default flex point;
Gesture display unit, during for comprising default flex point in the gesture identifying described user drafting, shows the gesture that described user draws;
Gesture identification unit, for identifying whether the gesture that described user draws is default gesture;
Program start unit, presets default application program corresponding to gesture for starting according to recognition result.
7. device according to claim 6, is characterized in that, also comprises:
Not display unit, for comprising flex point in the gesture identifying described user drafting, and the flex point comprised is not, when presetting flex point, do not show the gesture path that user has drawn, and stop gesture identification.
8. device according to claim 6, is characterized in that, program start unit comprises:
Program promoter unit, for when identifying gesture that described user draws for presetting gesture, starting and presetting default application program corresponding to gesture;
Stopping display subelement, for not being when presetting gesture in the gesture identifying described user drafting, stopping the gesture of the described user's drafting of display also to stop gesture identification.
9. device according to claim 6, is characterized in that, flex point recognition unit comprises:
Unique point obtains subelement, for obtaining the current signature point in the gesture of user's drafting, and the previous unique point of current signature point is defined as second feature point, and the previous unique point of second feature point is defined as fisrt feature point;
Flex point recognin unit, for being greater than the horizontal ordinate of fisrt feature point and second feature point at the horizontal ordinate of current signature point, and the ordinate of second feature point is when being greater than the ordinate of fisrt feature point and current signature point, determine that the gesture that user draws comprises default flex point; Otherwise, determine that the gesture that user draws does not comprise default flex point.
10. device according to claim 6, is characterized in that, gesture identification unit specifically for:
Determine whether only include a default flex point in the gesture that described user draws, and do not comprise other flex point except default flex point, if so, then determine that the gesture that described user draws is default gesture; Otherwise, determine that the gesture that user draws is not default gesture.
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| CN104915011A (en) * | 2015-06-28 | 2015-09-16 | 合肥金诺数码科技股份有限公司 | Open environment gesture interaction game system |
| CN106095303A (en) * | 2016-05-31 | 2016-11-09 | 周奇 | A kind of method for operating application program and device |
| CN107807779A (en) * | 2016-09-08 | 2018-03-16 | 中兴通讯股份有限公司 | A kind of touch operation method and device |
| US10901608B2 (en) | 2017-07-28 | 2021-01-26 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for recognizing a screen-off gesture, and storage medium and terminal thereof |
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