CN108628433A - Gesture identification method and its system - Google Patents
Gesture identification method and its system Download PDFInfo
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- CN108628433A CN108628433A CN201710182765.5A CN201710182765A CN108628433A CN 108628433 A CN108628433 A CN 108628433A CN 201710182765 A CN201710182765 A CN 201710182765A CN 108628433 A CN108628433 A CN 108628433A
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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
- G06F3/017—Gesture based interaction, e.g. based on a set of recognized hand gestures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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Abstract
The invention discloses a kind of gesture identification method and its system, method includes：Three or more spaced infrared distance sensors emit infrared signal simultaneously；The distance that each infrared distance sensor measures is obtained, and records the time that each infrared distance sensor receives infrared reflectance signal；Judge whether distance that more than two infrared distance sensors measure within the scope of effective distance；If so, the time that described two above infrared distance sensors are received with infrared reflectance signal carries out priority sequence, ranking results are obtained；Gesture identification is carried out according to the ranking results.The recognition accuracy of the present invention program is high, and can design more gesture motions using multiple infrared sensors, is suitable for the higher man-machine interactive system of complexity, is particularly suitable for the gesture identification of auto-navigation system.
Description
Technical field
The present invention relates to human-computer interaction technique field more particularly to a kind of gesture identification method and its systems.
Background technology
With the development of Automobile Electronic Industry, the function of auto-navigation system is more and more, therefore man-machine interactive system
Complexity is also higher and higher.It is gradually sent out from contact recognition methods (such as button, rocker-type, knob, touch-screen type etc.)
Open up non contact angle measurement method (such as speech recognition, gesture identification etc.).
Existing gesture identification method is identified using an infrared camera, and identification process is related to image calculation
Method needs the longer reaction time from image is captured to identification maneuver, and accuracy rate is not high, and infrared identification method is limited into
Image angle degree can only be operated using a specific hand, very inconvenient for operator.It is filled when by existing gesture identification
When setting applied to auto-navigation system, since motor space is narrow, many objects can all emit infrared sensor in automobile
Infrared light is reflected, and generates interference signal, and the normal activity of occupant also can further influence the identification to gesture.
Invention content
The technical problem to be solved by the present invention is to：A kind of gesture identification method that recognition accuracy is high is provided and its is
System.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of gesture identification method, including：
Three or more spaced infrared distance sensors emit infrared signal simultaneously；
Obtain the distance that each infrared distance sensor measures, and record each infrared distance sensor receive it is infrared anti-
Penetrate the time of signal；
Judge whether distance that more than two infrared distance sensors measure within the scope of effective distance；
If so, the time that described two above infrared distance sensors are received with infrared reflectance signal carries out successively
Sequence, obtains ranking results；
Gesture identification is carried out according to the ranking results.
Another technical solution that the present invention uses for：
A kind of gesture recognition system, including：
Transmitting module includes three or more spaced infrared distance sensors, for emitting infrared signal simultaneously；
Acquisition module, the distance measured for obtaining each infrared distance sensor, and record each infrared distance measurement sensing
Device receives the time of infrared reflectance signal；
Judgment module, for judging whether distance that more than two infrared distance sensors measure in effective distance
In range；
Sorting module, for if so, receiving infrared reflectance signal to described two above infrared distance sensors
Time carry out priority sequence, obtain ranking results；
Identification module, for carrying out gesture identification according to the ranking results.
The beneficial effects of the present invention are：Emit infrared signal simultaneously using multiple infrared distance sensors, and judges red
Whether the distance that outer ranging sensing measures is effective, the reflection signal outside effective distance range can be filtered out, then to infrared survey
The time that reflection signal is received away from sensor carries out priority sequence, and gesture identification, identification are carried out according to obtained ranking results
Accuracy rate is high, and can design more gesture motions using multiple infrared sensors, and it is higher man-machine to be suitable for complexity
Interactive system is particularly suitable for the gesture identification of auto-navigation system.
Description of the drawings
Fig. 1 is the flow chart of the gesture identification method of the present invention；
Fig. 2 is the flow chart of the gesture identification method of the embodiment of the present invention one；
Fig. 3 is the arrangement schematic diagram of the infrared distance sensor of the embodiment of the present invention two；
Fig. 4 is the schematic diagram of the gesture recognition system of the present invention；
Fig. 5 is the schematic diagram of the gesture recognition system of the embodiment of the present invention three.
Label declaration：
1, transmitting module；2, acquisition module；3, judgment module；4, sorting module；5, identification module；6, the first default mould
Block；7, the second presetting module；51, computing unit；52, recognition unit；53, unit is preset.
Specific implementation mode
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is：The infrared reflectance signal outside effective distance range is first filtered out, is then docked
The time for receiving reflection signal carries out priority sequence, carries out gesture identification according to obtained ranking results, recognition accuracy is high.
Please refer to Fig. 1, a kind of gesture identification method, including：
Three or more spaced infrared distance sensors emit infrared signal simultaneously；
Obtain the distance that each infrared distance sensor measures, and record each infrared distance sensor receive it is infrared anti-
Penetrate the time of signal；
Judge whether distance that more than two infrared distance sensors measure within the scope of effective distance；
If so, the time that described two above infrared distance sensors are received with infrared reflectance signal carries out successively
Sequence, obtains ranking results；
Gesture identification is carried out according to the ranking results.
As can be seen from the above description, the beneficial effects of the present invention are：Three or more infrared distance sensor interval settings,
It can be detected respectively into row distance by infrared reflectance signal, infrared distance sensor can be arranged as required to different interval distances
From arrangement mode can also be arranged according to concrete application scene；It was carried out by the distance measured to infrared distance sensor
Filter, can exclude invalid infrared reflectance signal, and only when there are more than two infrared distance sensors measure away from
Gesture identification is just carried out when from effective range, false triggering can be prevented, so as to improve the accuracy rate of identification, according to difference
The sequencing that is triggered of infrared distance sensor it is different, the identification of a variety of different gestures, different gestures pair can be carried out
Different control signals is answered, it, can be easily by different when gesture recognition system is connected to onboard navigation system
Gesture carries out relevant operation to navigation system, it is not necessary to pass through various complicated knobs, convenient operation and control.
Further, described " to judge whether distance that more than two infrared distance sensors measure in effective model
In enclosing " further include before：A default effective distance range.
Seen from the above description, effective distance range can be preset according to application scenarios, when gesture recognition system is used for vehicle
When carrying navigation system, also effective distance range can be preset according to the size of inner space, the custom of driver, to improve
Accuracy of identification.
Further, described " carrying out gesture identification according to the ranking results " specifically includes：
Calculate the interval time between the two neighboring time in the ranking results；
When the interval time is in preset time range, gesture identification is carried out according to the ranking results.
Further, it is also wrapped after described " calculating the interval time between the two neighboring time in the ranking results "
It includes：A default time range.
Seen from the above description, the interval time between two adjacent times judges, can be according to driver's
Hobby sets interval, and is judged to triggering in vain when interval time being more than certain range, can further increase identification
Precision, and user experience can be enhanced.
Further, further include before described " carrying out gesture identification according to the ranking results "：Default gesture motion.
Seen from the above description, gesture motion can be preset, each gesture motion corresponds to a control instruction, presets hand
Gesture can be arranged when acting according to the custom of driver.
Further, including three infrared distance sensors, three infrared distance sensors are arranged in up-side down triangle,
And the direction of three infrared distance sensor transmitting infrared signals is identical.
Seen from the above description, when three infrared distance sensors are arranged in inverted triangle, multiple gesture motions, example can be set
Such as, Zuo Hui, the right side wave, Back stroke, under wave, rotate, rotate clockwise counterclockwise, various control instruction can be sent out.
Fig. 4 is please referred to, another technical solution of the invention is：
A kind of gesture recognition system, including：
Transmitting module includes three or more spaced infrared distance sensors, for emitting infrared signal simultaneously；
Acquisition module, the distance measured for obtaining each infrared distance sensor, and record each infrared distance measurement sensing
Device receives the time of infrared reflectance signal；
Judgment module, for judging whether distance that more than two infrared distance sensors measure in effective distance
In range；
Sorting module, for if so, receiving infrared reflectance signal to described two above infrared distance sensors
Time carry out priority sequence, obtain ranking results；
Identification module, for carrying out gesture identification according to the ranking results.
Further, further include the first presetting module, for presetting an effective distance range.
Further, the identification module includes：
Computing unit, for calculating the interval time between the two neighboring time in the ranking results；
Recognition unit, for when the interval time is in preset time range, being carried out according to the ranking results
Gesture identification.
Further, the identification module further includes default unit, for presetting a time range.
Further, further include the second presetting module, for presetting gesture motion.
Further, the transmitting module includes three infrared distance sensors, and three infrared distance sensors are in
Up-side down triangle arranges, and the direction of three infrared distance sensor transmitting infrared signals is identical.
Embodiment one
Fig. 2 is please referred to, the embodiment of the present invention one is：A kind of gesture identification method has higher recognition efficiency and knowledge
Other precision is suitable for the gesture identification of onboard navigation system, including：
S1, three or more spaced infrared distance sensors emit infrared signal simultaneously.For example, it may be setting
Three infrared distance sensors, three infrared distance sensors are arranged in up-side down triangle, and three infrared distance measurement sensings
The direction that device emits infrared signal is identical.The distance between infrared distance sensor interval can be configured as needed, such as
Can be 10cm.
S2, obtain the distance that each infrared distance sensor measures, and record each infrared distance sensor receive it is red
The time of external reflectance signal.In the present embodiment, infrared distance sensor is the difference that obstacle distance is encountered using infrared signal
The intensity of reflection also different principle, carries out the monitoring of barrier distance, infrared distance sensor have a pair of of infrared emission and
Reception diode, emitting diode emit the infrared signal of specific frequency, and reception diode receives the infrared signal of this frequency,
It is reflected when infrared signal encounters barrier and is received diode reception, after reception diode receives infrared reflectance signal
Relevant data information is sent to CPU module by an ADC conversion circuits and carries out data processing, CPU module can be calculated
The distance of barrier.Meanwhile CPU module is also recorded and is preserved to the time for receiving infrared reflectance signal.
S3, judge whether distance that more than two infrared distance sensors measure within the scope of effective distance；If
It is then to carry out step S4, if it is not, then abandoning this detection data.Before judgement, an also default effective distance range works as survey
Think that its data is reliable when the distance obtained is within the scope of effective distance, in the present embodiment, effective distance range can be as needed
Setting.Next step is just carried out when the distance measured there are more than two infrared sensors is in effective range, can be improved
The accuracy rate of gesture identification prevents maloperation from triggering single infrared distance sensor.
S4, the time that described two above infrared distance sensors are received with infrared reflectance signal carry out first heel row
Sequence obtains ranking results.
S5, gesture identification is carried out according to the ranking results, specifically included：
The interval time between the two neighboring time in S51, the calculating ranking results.
S52, a default time range；The size of time range can be configured according to the action speed of driver.
S53, when the time interval is in preset time range, according to the ranking results carry out gesture identification.
If the time interval abandons detection data outside preset time range.
Further include presetting gesture motion before carrying out step S5, each gesture motion corresponds to a control instruction, in advance
If can be arranged according to the custom of operator and needs when gesture motion.
In the present embodiment, the reflection signal outside effective distance range is first filtered out, then infrared distance sensor is received
Time to reflection signal carries out priority sequence, and gesture identification is carried out according to obtained ranking results, and recognition accuracy is high, and
And using multiple infrared distance sensors, accuracy of identification can be improved, it is dynamic to be also arranged as required to multiple and different gestures
Make.
Embodiment two
The embodiment of the present invention two is a concrete application scene of above-described embodiment, is a kind of gesture of onboard navigation system
Recognition methods, including：
As shown in figure 3, three infrared distance sensors, three infrared surveys is arranged in the main body section in steering wheel for vehicle
It is arranged in up-side down triangle away from sensor, and the direction of three infrared distance sensor transmitting infrared signals is identical, described three
Infrared distance sensor is respectively labeled as L, R, D, and the distance of three infrared distance sensors between any two is 8cm.It is three infrared
Distance measuring sensor is independently arranged, and is connected to a CPU processor module, CPU processor mould by an ADC conversion circuits respectively
Block is connected to onboard navigation system.A switch button is additionally provided on steering wheel for vehicle, for opening for control gesture identification device
It opens or closes, when needing to control onboard navigation system by gesture identification, click switch button.
In the present embodiment, it sets effective distance range to 1cm-10cm, the time range of interval time is preset as
0.1-2s, it is of course also possible to which different distance range and time range is arranged in the custom according to driver.
In the present embodiment, gesture motion can be preset in CPU processor module, each gesture motion corresponds to a control
System instruction.It waves gesture for example, the front and back action for triggering R, L respectively is preset as a left side, a left side corresponding control instruction of gesture of waving is
Vehicle is navigated to household resident address by navigation system from current location；The action of front and back triggering respectively L, R are preset as the right side to wave
Gesture, the right side corresponding control instruction of gesture of waving is that vehicle is navigated to job site by navigation system from current location；It will be front and back point
Not Chu Fa the action of L, R, D be preset as clockwise rotation gesture, the corresponding control instruction of clockwise rotation gesture is vehicle mounted guidance
System navigates to vehicle apart from nearest gas station from current location.If driver wants to go home from current location, can beat
Switch button is opened, then a left side waves to trigger R, L respectively in the range of 1cm-10cm, and navigation system can be automatically by destination at this time
It is set as household resident address, and is navigated.Gesture motion can be configured as needed with control instruction, is not limited to above-mentioned
Corresponded manner.
In the present embodiment, control switch can also be respectively set in three infrared distance sensors, when driver only needs
When two infrared distance sensors, one of switch can be turned off, prevent maloperation from triggering another, avoid gesture identification
Device erroneous judgement.For example, when driver only need a left side wave gesture or the right side wave gesture when, D can be closed.
In the present embodiment, at least two infrared distance sensors of setting carry out gesture identification, because of infrared distance sensor
Setting on the steering wheel, may all trigger one of those, gesture identification is filled at this time when driver turn or holding steering wheel
It sets and does not respond thereto, only just sending corresponding control when triggering more than two infrared distance sensors refers to
It enables, the precision of identification can be improved.
Embodiment three
Fig. 5 is please referred to, the embodiment of the present invention three is corresponding with the method for above-described embodiment, is a kind of gesture identification system
System, including：
Transmitting module 1 includes three or more spaced infrared distance sensors, for emitting infrared letter simultaneously
Number；
Acquisition module 2, the distance measured for obtaining each infrared distance sensor, and record each infrared distance measurement sensing
Device receives the time of infrared reflectance signal；
Judgment module 3, for judge whether distance that more than two infrared distance sensors measure effectively away from
From in range；
Sorting module 4, for if so, receiving infrared reflectance signal to described two above infrared distance sensors
Time carry out priority sequence, obtain ranking results；
Identification module 5, for carrying out gesture identification according to the ranking results.
Further, further include the first presetting module 6, for presetting an effective distance range.
Further, the identification module 5 includes：
Computing unit 51, for calculating the interval time between the two neighboring time in the ranking results；
Recognition unit 52, for when the interval time is in preset time range, according to the ranking results into
Row gesture identification.
Further, the identification module 5 further includes default unit 53, for presetting a time range.
Further, further include the second presetting module 7, for presetting gesture motion.
Further, the transmitting module 1 includes three infrared distance sensors, and three infrared distance sensors are in
Up-side down triangle arranges, and the direction of three infrared distance sensor transmitting infrared signals is identical.
In conclusion a kind of gesture identification method provided by the invention and its system, first to invalid infrared reflectance signal
It is filtered, then carries out the sequence of reflection interval, carry out gesture identification according to ranking results, the standard of gesture identification can be improved
True rate and precision are suitable for the gesture identification of onboard navigation system, easy to use, easy to operate.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, include similarly
In the scope of patent protection of the present invention.
Claims (10)
1. a kind of gesture identification method, which is characterized in that including：
Three or more spaced infrared distance sensors emit infrared signal simultaneously；
The distance that each infrared distance sensor measures is obtained, and records each infrared distance sensor and receives infrared external reflection letter
Number time；
Judge whether distance that more than two infrared distance sensors measure within the scope of effective distance；
If so, the time that described two above infrared distance sensors are received with infrared reflectance signal carries out first heel row
Sequence obtains ranking results；
Gesture identification is carried out according to the ranking results.
2. gesture identification method according to claim 1, which is characterized in that described " to judge whether more than two
The distance that infrared distance sensor measures is in effective range " further include before：A default effective distance range.
3. gesture identification method according to claim 1, which is characterized in that described " to carry out hand according to the ranking results
Gesture identifies " it specifically includes：
Calculate the interval time between the two neighboring time in the ranking results；
When the interval time is in preset time range, gesture identification is carried out according to the ranking results.
4. gesture identification method according to claim 3, which is characterized in that described " to calculate the phase in the ranking results
Further include after interval time between adjacent two times "：A default time range.
5. gesture identification method according to claim 1, which is characterized in that described " to carry out hand according to the ranking results
Gesture identifies " further include before：Default gesture motion.
6. gesture identification method according to claim 1, which is characterized in that described including three infrared distance sensors
Three infrared distance sensors are arranged in up-side down triangle, and the direction phase of three infrared distance sensor transmitting infrared signals
Together.
7. a kind of gesture recognition system, which is characterized in that including：
Transmitting module includes three or more spaced infrared distance sensors, for emitting infrared signal simultaneously；
Acquisition module, the distance measured for obtaining each infrared distance sensor, and record each infrared distance sensor and connect
Receive the time of infrared reflectance signal；
Judgment module, for judging whether distance that more than two infrared distance sensors measure in effective distance range
It is interior；
Sorting module, for if so, to described two above infrared distance sensors receive infrared reflectance signal when
Between carry out priority sequence, obtain ranking results；
Identification module, for carrying out gesture identification according to the ranking results.
8. gesture recognition system according to claim 7, which is characterized in that further include the first presetting module, for presetting
One effective distance range.
9. gesture recognition system according to claim 7, which is characterized in that the identification module includes：
Computing unit, for calculating the interval time between the two neighboring time in the ranking results；
Recognition unit, for when the interval time is in preset time range, gesture to be carried out according to the ranking results
Identification.
10. gesture recognition system according to claim 9, which is characterized in that the identification module further includes default unit,
For presetting a time range.
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