CN104536576A - Hand signal interaction method among multimedia devices in same surface based on supersonic wave - Google Patents
Hand signal interaction method among multimedia devices in same surface based on supersonic wave Download PDFInfo
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- CN104536576A CN104536576A CN201510012383.9A CN201510012383A CN104536576A CN 104536576 A CN104536576 A CN 104536576A CN 201510012383 A CN201510012383 A CN 201510012383A CN 104536576 A CN104536576 A CN 104536576A
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
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Abstract
The invention discloses a hand signal interaction method among multimedia devices in a same surface based on supersonic wave with simple and easy utilization and convenient operation. A first device enters the interaction space is defined as a main device. The main device searches a sub device through a wave signal. A confirmation signal used for replying the main device is generated when the sub device receives the wave signal. The distance between the main device and the sub device is calculated by the main device. A network is established when the distance between the main device and the sub device reaches a predetermined distance, and an application is selected by a user. The wave signal generated by the main device is received by the sub device through the reflection of a hand signal object. An analyzing process is conducted after the wave signal is received by the sub device. The wave signal is sent out by the sub device which analyzes a local host address, and returns to the main device through the reflection of the hand signal object. The vertical distance between the hand signal object and the surface of the device is represented by an h. The distance between the main device and the projection point of the hand signal object in the surface of the device is represented by an X. A movement type of the hand signal object can be obtained by judging the variation trend of the h and the X, and corresponding operations are carried out by the device based on the agreement of an application program.
Description
Technical field
the present invention relates to a kind of based on the control method between ultrasonic technology multimedia equipment.
Background technology
along with the function of mobile device is more and more abundanter, multi-machine interaction can realize the interaction of multi-screen, as multipage browse, play, take pictures, pay, the function such as equipment room data transmission, this will become a trend of multimedia equipment future development.Now, some multimedia equipment has started to research and develop interaction function, as Samsung mobile phone S4 has realized Group play function, can open shared photo, document, music and game on-line battle, support that at most many people PK of 11 equipment plays.But the Group play of Samsung mobile phone S4 still adopts the mode of touch-screen, can only be used as the superposition of display screen, and the distance of mobile phone is very little, data transmission adopts NFC.The multi-machine interaction that we expect is not only the superposition of display screen, and be more the interactive function between multiple mobile device, Gesture Recognition is widely used in multimedia equipment, and the multimachine based on gesture is interactive will become following large characteristic.
Summary of the invention
the object of the invention is the shortcoming overcoming prior art, provide a kind of and be simple and easy to use, the easy to operate multi-machine interaction algorithm and implementation scheme based on ultrasound wave gesture identification.
to achieve these goals, the invention provides a kind of based on hyperacoustic same plane inner multimedia equipment room gesture interaction method, for carrying out gesture interaction control to the multimedia equipment of at least two in interactive space, multimedia equipment described in every platform all has sonic generator, acoustic receiver and unique ID and encodes, and each multimedia equipment is all positioned at same plane, and the method comprises the steps:
s1: main equipment confirms step, and wherein a multimedia equipment is defined as main equipment, and other are defined as from equipment;
s2: from device discovery procedure, described main equipment is searched from equipment by the acoustic signals that sonic generator produces, when receiving this signal from the acoustic receiver of equipment, main equipment is replied by producing confirmation signal from the sonic generator of equipment, main equipment calculates the distance from equipment by sound wave transmission and time of reception, carry out networking when main equipment and between equipment close to when reaching preset distance, selected the application program needing to start afterwards by user;
s4: gesture identification step, the acoustic signals that the sonic generator of described main equipment produces receives by from equipment through the reflection of gesture object, described carries out dissection process after equipment receives this signal, parsing is being launched by this acoustic signals from equipment of the machine address, the acoustic receiver of main equipment is returned again through the reflection of gesture object, definition h is that gesture object is to the interplanar vertical range of multimedia equipment, definition X is that main equipment arrives the distance of gesture object between multimedia equipment plane inner projection point, by judging that the variation tendency of numerical value h and X obtains gesture object of which movement type,
s5: instruction response of step, main equipment performs corresponding operation to from equipment according to the gesture object of which movement type of arranging in application program and data processing instructions corresponding relation.
further improve as the present invention, in described step S2, during location, first first party sends the positioning signal of encoding with the ID of this equipment by sonic generator, after elapsed time T, second party receives this positioning signal of encoding with ID by signal receiver, and by sonic generator, the positioning signal received is sent to first party after processing time T, elapsed-time standards is still T, the distance a between both devices is calculated by the travel-time (2T-T)/2, clock due to multiple stage multimedia equipment is difficult to synchronous, therefore adopt the distance-finding method without clock synchronous.
further improve as the present invention, in described step S3, when the sonic generator of multimedia equipment and the spacing of acoustic receiver are less than predetermined value, this distance values is left in the basket and disregards, L1 is the distance that main equipment arrives gesture object, L2 is the distance from equipment to gesture object, and a is the distance between equipment, wherein:
it is T3 that main equipment sends the time of getting back to the acoustic receiver of main equipment through gesture reflections off objects after sound wave, and the distance obtaining the walking of sound wave correspondence is L ', then have L1=L '/2;
main equipment send after sound wave through gesture reflections off objects arrive from the time of the ripple receiver of equipment be T1, after T time process, sending sound wave through the time of the acoustic receiver reception of gesture reflections off objects arrival main equipment from equipment is T2, obtaining the corresponding travel distance of sound wave according to (T1+T2--T) is L, then have L2=L/2-L1;
according to x2+h2=L12 and (a-x) 2+h2=L22, obtain the value of h, X, along with the movement of gesture object, by judging that the variation tendency of numerical value h and X obtains gesture object of which movement type:
when the value of X increases, judge that gesture object moves to close from the direction of equipment;
when the value of X reduces, judge that gesture object moves to the direction close to main equipment;
when the value of h increases, judge that gesture object moves to away from main equipment with from the direction of equipment place plane;
when the value of h reduces, judge that gesture object moves to close to main equipment with from the direction of equipment place plane.
further improve as the present invention, described ID coding comprises geocoding or ultrasonic coding or equipment user's title.
further improve as the present invention, described sonic generator comprises loudspeaker, and described acoustic receiver comprises microphone.
further improve as the present invention, when main equipment and between equipment close to when reaching preset distance, main equipment carries out carrying out networking after authentication is passed through from equipment to newly-increased.
further improve as the present invention, when main equipment is searched from equipment, search the frequency that signal has agreement, or amplitude, or the transmission number of cycles of agreement, or the transmission time interval of agreement.
further improve as the present invention, the data transmission between multimedia equipment is realized by cable network or wireless network.
the present invention proposes the algorithm and implementation conceptual design of the ultrasonic gesture identification of a kind of multi-machine interaction, and the program is designed with following advantage:
1, multimedia equipment is furnished with microphone and loudspeaker, microphone can as acoustic receiver, and loudspeaker can as sonic generator, without the need to increasing electronic devices and components to multimedia equipment, without the need to revising original circuit design, device hardware cost is not affected.
2, multiple in-plant multimedia equipment is combined identification gesture and is carried out mutual using a mark as high-end multimedia equipment, is a trend of following Intelligent mobile equipment development.
3, gesture identification is contactless operation, and gesture is simple and easy to use, easy to operate.
Accompanying drawing explanation
attachedly Figure 1 shows that two multimedia equipments according to the present invention are without synchronizing clock signals distance-finding method.
attachedly Figure 2 shows that according to gesture identification process of the present invention, in figure, multimedia equipment sonic generator and acoustic receiver distance are closely.
accompanying drawing 3 is the schematic diagram of gesture identification process in accompanying drawing 2.
attachedly Figure 4 shows that according to gesture identification process of the present invention, multimedia equipment sonic generator and acoustic receiver is distant cannot ignore in figure.
attachedly Figure 5 shows that according to gesture identification process of the present invention, in figure multimedia equipment sonic generator and acoustic receiver distant time equivalent geometric graph.
Embodiment
below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
embodiment one
of the present invention based on hyperacoustic same plane inner multimedia equipment room gesture interaction method, for carrying out gesture interaction control to the multiple stage multimedia equipment in interactive space, multimedia equipment comprises portable set and fixed apparatus, sonic generator adopts loudspeaker, and acoustic receiver adopts microphone.Multiple multimedia equipment can identify that same gesture realizes the interaction of multihead display, as pair of pages browse, the function such as equipment room file transfer, game, 3D take pictures, transfer accounts.Such as, it is that two multimedia equipments are closely placed that pair of pages is browsed, and copies the reading of papery books, the recto of equipment display books, and the verso of equipment display books, carries out page turning after gesture identification, similar papery books.
each multimedia equipment is all positioned at same plane, every platform multimedia equipment all has sonic generator, acoustic receiver and unique ID and encodes, ID coding comprises geocoding or ultrasonic coding or equipment user's title, wireless telecommunications or wire communication can be carried out between each equipment, for there is sound wave in sonic generator, acoustic receiver is for receiving sound wave.This method comprises the steps.
main equipment confirms step, and during work, multimedia equipment is in always and ultrasound wave occurs and receives ultrasound wave state, comprises the information such as ID signal in this ultrasound wave.When two or more multimedia equipment, wherein one as main equipment, and other are as from equipment.
from device discovery procedure, main equipment is searched from equipment by the acoustic signals that sonic generator produces, and searches the frequency that signal has agreement, or amplitude, or the transmission number of cycles of agreement, or the transmission time interval of agreement.This sound wave contains command signal and positioning signal, contains again the ID from equipment, require finding range from equipment of this ID in command signal.When receiving this signal from the acoustic receiver of equipment, identify in this acoustic signals and comprise the machine ID, again this signal is replied main equipment by by producing confirmation signal from the sonic generator of equipment after processing, if receiving from equipment the ID comprised sound wave is not the machine ID, then without the need to processing this signal.Main equipment calculates the distance from equipment by sound wave transmission and time of reception, when main equipment and between equipment close to when reaching preset distance, in this patent, the distance of equipment room is 0 ~ 0.5 meter, now network successfully, can arrange the safety practices such as password during equipment network, be designated equipment with what ensure to enter this net.Selected the application program needing to start afterwards by user, as pair of pages browse, transfer accounts, play, take pictures, equipment room file transfer etc., then multimedia equipment enters gesture identification state.
gesture identification step, the acoustic signals that the sonic generator of main equipment produces receives by from equipment through the reflection of gesture object, equally, this sound wave contains command signal and positioning signal, the ID from equipment is contained in command signal, dissection process is carried out after equipment receives this signal, parsing is being launched by this acoustic signals from equipment of the machine address, the acoustic receiver of main equipment is returned again through the reflection of gesture object, definition h is that gesture object is to the interplanar vertical range of multimedia equipment, definition X is that main equipment arrives the distance of gesture object between multimedia equipment plane inner projection point, through the sampling at certain hour interval, by judging that the variation tendency of numerical value h and X obtains gesture object of which movement type.
instruction response of step, main equipment performs corresponding operation to from equipment according to the gesture object of which movement type of arranging in application program and data processing instructions corresponding relation.
shown in accompanying drawing 1, for the distance measurement method between equipment 1 and equipment 2, equipment 1 sends ultrasound wave, after elapsed time T, equipment 2 receives this ultrasound wave, equipment 1 is beamed back again again after the process of T time, elapsed-time standards is still T, the time of T for experiencing when equipment 2 processes acoustic signals, this time can be drawn by detection, then the distance between equipment 1 to equipment 2 was directly proportional to the time (2T-T)/2, and this range mark is constant a, clock due to multiple stage multimedia equipment is difficult to synchronous, therefore adopts the distance-finding method without clock synchronous.
shown in accompanying drawing 2, when the sonic generator of multimedia equipment and the spacing of acoustic receiver are less than predetermined value, this distance values is left in the basket and disregards, 200 is main equipment, 201 is sonic generator and the acoustic receiver of main equipment, 300 is from equipment, and 301 is sonic generator from equipment and acoustic receiver, and D is that sound wave is at palmar point.Main equipment sends ultrasound wave, after palm refraction, and the acoustic receiver of main equipment and this sound wave can be received from the acoustic receiver of equipment.L1 is the distance that main equipment arrives gesture object, and L2 is the distance from equipment to gesture object, and a is the distance between equipment.
it is T3 that main equipment sends the time of getting back to the acoustic receiver of main equipment through gesture reflections off objects after sound wave, and the distance obtaining the walking of sound wave correspondence is L ', then have L1=L '/2.
main equipment send after sound wave through gesture reflections off objects arrive from the time of the ripple receiver of equipment be T1, after T time process, sending sound wave through the time of the acoustic receiver reception of gesture reflections off objects arrival main equipment from equipment is T2, T1=T2, it is L that this distance can obtain the corresponding travel distance of sound wave according to (T1+T2--T), then have L2=L/2-L1.
shown in accompanying drawing 3, as shown in Figure 3, when palm moves, h is the vertical range of reflection spot to equipment place plane.X is the distance of sonic generator to vertical point of equipment 200, can obtain equipment 1 to the horizontal range of equipment 2 by Fig. 1 is a, then have as follows: x2+h2=L12 and (a-x) 2+h2=L22, wherein that known is a, L ', L, can obtain the value of h, X, along with the movement of gesture object, type and the direction of gesture can be judged according to the change of L and h.
this patent multimedia link ultrasonic identification gesture time, the distance between multimedia equipment is no more than 0.5 meter.Namely a is less than or equal to 0.5, and the distance due to ultrasound wave identifiable design gesture is 0.5 meter, then 0≤x≤0.5 in the process of hand movement, at a certain time interval, calculates h and X.
when h change is very little, when X changes greatly, the curve of L is a para-curve, and as x=a/2, L value is minimum:
when the value of X increases, can judge that hand is moved by the direction of equipment 200 to equipment 300;
when the value of X reduces, can judge that hand is moved by the direction of equipment 300 to equipment 200.
when h alters a great deal, when X change is less:
when the value of h increases, can judge that the direction that gesture is perpendicular to equipment 200 and equipment 300 place plane moves up;
when the value of X reduces, can judge that the direction that gesture is perpendicular to equipment 200 and equipment 300 place plane moves down.
embodiment two
as shown in Figure 4, as the distortion of situation in embodiment one, when multimedia ultrasonic receiver and ultrasonic generator distant time, the distance d between acoustic receiver and sonic generator is known, the distance of two multimedia equipments is that a, a can calculate.The ultrasonic signal that main equipment 400 sends is solid line, the ultrasonic signal sent from equipment 500 is dotted line, and the ultrasound wave that the sonic generator 402 of main equipment 400 sends also can be received by the acoustic receiver 401 of main equipment after palmar, the ultrasonic signal sent from the sonic generator 502 of equipment 500 also can be received by the acoustic receiver 501 from equipment after palmar.L1 ' is for equipment 402 palm is to the distance of palmar point, L2 ' is the palmar o'clock distance to 501, L3 ' is 502 is 501 to the distances of palmar point to the distance of palmar point, L4 ', h is the distance reflexing to multimedia equipment place plane, and x is the distance of sonic generator to vertical point of equipment 400.L1 ' can be obtained by acoustic emission and time of reception difference, L2 ', L3 ', the numerical value of L4 ', equivalence geometric graph as shown in Figure 5, it is the centrum of a parallelogram, L1 ', L2 ', L3 ', L4 ', a, d is known, then centrum is unique, reflection spot can obtain to the vertical h ' of distance of multimedia equipment place plane, the value of x ' can be obtained in right-angle triangle, by judging that numerical value h ' obtains the type of sports of gesture object 600 with the variation tendency of x ', according to the agreement in this Application Software Program, perform the operation of agreement, as each equipment carries out page turning simultaneously, the operations such as slip.
above embodiment is only for illustrating technical conceive of the present invention and feature; its object is to allow person skilled in the art understand content of the present invention and to be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (8)
1. one kind based on hyperacoustic same plane inner multimedia equipment room gesture interaction method, for carrying out gesture interaction control to the multimedia equipment of at least two in interactive space, it is characterized in that: every multimedia equipment described in platform all has sonic generator, acoustic receiver and unique ID and encodes, and each multimedia equipment is all positioned at same plane, and the method comprises the steps:
S1: main equipment confirms step, and wherein a multimedia equipment is defined as main equipment, and other are defined as from equipment;
S2: from device discovery procedure, described main equipment is searched from equipment by the acoustic signals that sonic generator produces, when receiving this signal from the acoustic receiver of equipment, main equipment is replied by producing confirmation signal from the sonic generator of equipment, main equipment calculates the distance from equipment by sound wave transmission and time of reception, carry out networking when main equipment and between equipment close to when reaching preset distance, selected the application program needing to start afterwards by user;
S4: gesture identification step, the acoustic signals that the sonic generator of described main equipment produces receives by from equipment through the reflection of gesture object, described carries out dissection process after equipment receives this signal, parsing is being launched by this acoustic signals from equipment of the machine address, the acoustic receiver of main equipment is returned again through the reflection of gesture object, definition h is that gesture object is to the interplanar vertical range of multimedia equipment, definition X is that main equipment arrives the distance of gesture object between multimedia equipment plane inner projection point, by judging that the variation tendency of numerical value h and X obtains gesture object of which movement type,
S5: instruction response of step, main equipment performs corresponding operation to from equipment according to the gesture object of which movement type of arranging in application program and data processing instructions corresponding relation.
2. according to claim 1 based on hyperacoustic same plane inner multimedia equipment room gesture interaction method, it is characterized in that: in described step S2, during location, first first party sends the positioning signal of encoding with the ID of this equipment by sonic generator, after elapsed time T, second party receives this positioning signal of encoding with ID by signal receiver, and by sonic generator, the positioning signal received is sent to first party after processing time T, elapsed-time standards is still T, the distance a between both devices is calculated by the travel-time (2T-T)/2.
3. according to claim 2 based on hyperacoustic same plane inner multimedia equipment room gesture interaction method, it is characterized in that: in described step S3, when the sonic generator of multimedia equipment and the spacing of acoustic receiver are less than predetermined value, this distance values is left in the basket and disregards, L1 is the distance that main equipment arrives gesture object, L2 is the distance from equipment to gesture object, and a is the distance between equipment, wherein:
It is T3 that main equipment sends the time of getting back to the acoustic receiver of main equipment through gesture reflections off objects after sound wave, and the distance obtaining the walking of sound wave correspondence is L ', then have L1=L '/2;
Main equipment send after sound wave through gesture reflections off objects arrive from the time of the ripple receiver of equipment be T1, after T time process, sending sound wave through the time of the acoustic receiver reception of gesture reflections off objects arrival main equipment from equipment is T2, obtaining the corresponding travel distance of sound wave according to (T1+T2--T) is L, then have L2=L/2-L1;
According to x2+h2=L12 and (a-x) 2+h2=L22, obtain the value of h, X, along with the movement of gesture object, by judging that the variation tendency of numerical value h and X obtains gesture object of which movement type:
When the value of X increases, judge that gesture object moves to close from the direction of equipment;
When the value of X reduces, judge that gesture object moves to the direction close to main equipment;
When the value of h increases, judge that gesture object moves to away from main equipment with from the direction of equipment place plane;
When the value of h reduces, judge that gesture object moves to close to main equipment with from the direction of equipment place plane.
4. according to claim 1 based on hyperacoustic same plane inner multimedia equipment room gesture interaction method, it is characterized in that: described ID coding comprises geocoding or ultrasonic coding or equipment user's title.
5. according to claim 1 based on hyperacoustic same plane inner multimedia equipment room gesture interaction method, it is characterized in that: described sonic generator comprises loudspeaker, described acoustic receiver comprises microphone.
6. according to claim 1 based on hyperacoustic same plane inner multimedia equipment room gesture interaction method, it is characterized in that: when main equipment and between equipment close to when reaching preset distance, main equipment carries out carrying out networking after authentication is passed through from equipment to newly-increased.
7. according to claim 1 based on hyperacoustic same plane inner multimedia equipment room gesture interaction method, it is characterized in that: when main equipment is searched from equipment, search the frequency that signal has agreement, or amplitude, or the transmission number of cycles of agreement, or the transmission time interval of agreement.
8. according to claim 1 based on hyperacoustic same plane inner multimedia equipment room gesture interaction method, it is characterized in that: the data transmission between multimedia equipment is realized by cable network or wireless network.
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