CN109982054A - A kind of projecting method based on location tracking, device, projector and optical projection system - Google Patents
A kind of projecting method based on location tracking, device, projector and optical projection system Download PDFInfo
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- CN109982054A CN109982054A CN201711444243.4A CN201711444243A CN109982054A CN 109982054 A CN109982054 A CN 109982054A CN 201711444243 A CN201711444243 A CN 201711444243A CN 109982054 A CN109982054 A CN 109982054A
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- 230000004807 localization Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
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- 230000003190 augmentative effect Effects 0.000 description 1
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Classifications
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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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
-
- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/22—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/78—Detection of presence or absence of voice signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Projection Apparatus (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
Embodiment of the present invention is related to projection display technique field, more particularly to a kind of projecting method based on location tracking, device, projector and optical projection system.Include: reception and judge whether first environment sound includes preset starting information, if comprising the sound for carrying starting information is determined as target sound, the target sound is determined as to track target, and started according to the starting information and projected；The initial position of tracking target is determined according to the target sound of the first environment sound, and is matched the initial position and projected；It receives and judges whether the second environment sound includes target sound, if comprising determining the current location of tracking target according to the target sound of the second environment sound；Switch projecting direction according to the current location of the tracking target.By the above-mentioned means, embodiment of the present invention can accurately determine the tracking target of projection, and projecting direction is determined by the location tracking to the tracking target, realizes trend projection.
Description
Technical field
Embodiment of the present invention is related to projection display technique field, more particularly to a kind of projection side based on location tracking
Method, device, projector and optical projection system.
Background technique
With the development of science and technology with the continuous improvement of living standard, people to the requirement in terms of visual perception increasingly
It is high, on the one hand, people are increasingly biased to miniature, large-size screen monitors and high-resolution to the pursuit of the display device of man-machine interface；It is another
Aspect, in display effect, people, which have, to be tended to pursue 3D innervation, augmented reality, visual enjoyment on the spot in person.Then, mutually
Dynamic projection is come into being, and increasingly common in people's lives.
Interaction passes through inductor and captures to target image, via network analysis, to generate the object that is captured
The movement of body, the action data combination real-time imaging interaction systems make to generate interacting of combining closely between participant and screen
Effect.
The usage scenario of interaction is different, and the function that projection device needs to have is also different, watches in user
When angle is not fixed, then need one kind that can carry out multi-angle change according to the intention projecting direction of user or user position
The trend optical projection system changed has just all the time so that target user can carry out the change of projecting direction according to self-demand
Depending on the visual enjoyment of projected picture, still, this trend optical projection system for being able to carry out multi-angle transformation environment where user
When number is more, it is difficult to the accurate target tracking object determined when projecting.Then, how trend projection systems project is accurately determined
When target tracking object be current urgent problem to be solved.
Summary of the invention
Embodiment of the present invention is intended to provide a kind of projecting method based on location tracking, device, projector and projection system
System is tracked by the way that the sound for carrying starting information is determined as target sound, accurately determines the tracking target of projection, together
When, projecting direction is determined by the location tracking to target sound, realizes trend projection.
In order to solve the above technical problems, the technical solution that embodiment of the present invention uses is: providing a kind of based on fixed
The projecting method of position tracking, comprising:
Receive first environment sound；
Judge whether the first environment sound includes preset starting information, if comprising the starting letter will be carried
The sound of breath is determined as target sound, the target sound is determined as to track target, and started according to the starting information and thrown
Shadow；
The initial position of the tracking target is determined according to the target sound of the first environment sound, and matches described rise
Beginning position is projected；
Receive second environment sound；
Judge whether the second environment sound includes target sound, if comprising according to the second environment sound
Target sound determines the current location of the tracking target；
Switch projecting direction according to the current location of the tracking target.
Optionally, the target sound according to the first environment sound determines the initial position tool of the tracking target
Body includes:
The characteristic parameter of the target sound of the first environment sound is extracted, the characteristic parameter includes acoustic amplitudes or sound
Sound arrival time；
The initial position of tracking target is determined according to the acoustic amplitudes of the target sound or sound arrival time.
Optionally, the method also includes:
In preset time threshold, if the target sound is not recognized from the second environment sound, to image
Acquisition device sends the initial position of the tracking target, so that described image acquisition device obtains the image of the tracking target
Information, and current location that is determining according to described image information and sending the tracking target；
Receive the current location for the tracking target that described image acquisition device is sent.
Optionally, described to be specifically included according to the current location switching projecting direction of the tracking target:
Judge whether the current location of the tracking target changes, calculating position changes angle if changing；
Switch projecting direction according to the position change angle.
Optionally, the method also includes:
Whether the target sound for judging the second environment sound includes preset standby information, if comprising according to institute
It states standby information and closes projection.
In order to solve the above technical problems, another technical solution that embodiment of the present invention uses is: providing one kind and be based on
The projection arrangement of location tracking, comprising:
First receiving module, first receiving module is for receiving first environment sound；
First control module, first control module is for judging whether the first environment sound includes preset open
Dynamic information, if comprising the sound for carrying the starting information is determined as target sound, the target sound is determined as chasing after
Track target, and started according to the starting information and projected；
First locating module, first locating module are used to determine institute according to the target sound of the first environment sound
The initial position of tracking target is stated, and matches the initial position and is projected；
Second receiving module, second receiving module is for receiving second environment sound；
Second locating module, second locating module is for judging whether the second environment sound includes target sound
Sound, if comprising determining the current location of the tracking target according to the target sound of the second environment sound；
First switching module, first switching module are used to switch projection side according to the current location of the tracking target
To.
Optionally, described device further include:
Extraction module, the extraction module are used to extract the characteristic parameter of the target sound of the first environment sound, institute
Stating characteristic parameter includes acoustic amplitudes or sound arrival time；
Third locating module, the third locating module are used to be reached according to the acoustic amplitudes or sound of the target sound
Time determines the initial position of tracking target.
Optionally, described device further include:
First sending module, first sending module is used in preset time threshold, if not from the second environment
The target sound is recognized in sound, then the initial position of the tracking target is sent to image collecting device, so that described
Image collecting device obtains the image information of the tracking target, and according to the determination of described image information and sends the tracking mesh
Target current location；
Third receiving module, the third receiving module are used to receive the tracking target of described image acquisition device transmission
Current location.
Optionally, described device further include:
Judge computing module, it is described to judge that computing module for judging whether the current location changes, is counted if changing
Calculate position change angle；
Second switching module, second switching module are used to switch projecting direction according to the position change angle.
Optionally, described device further include:
Second control module, second control module is for judging whether the target sound of the second environment sound wraps
Containing preset standby information, if comprising being closed and being projected according to the standby information.
In order to solve the above technical problems, another technical solution that embodiment of the present invention uses is: providing a kind of projection
Instrument, comprising:
At least one processor；And
The memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
A processor executes, so that at least one described processor is able to carry out the process described above.
In order to solve the above technical problems, another technical solution that embodiment of the present invention uses is: providing a kind of projection
System, comprising:
Voice collection device, image collecting device and above-described projector；
The ambient sound is sent to the projector, institute for acquiring ambient sound by the voice collection device
Stating ambient sound includes first environment sound and second environment sound；
Described image acquisition device is used to receive the initial position for the tracking target that the projector is sent, and according to described
The initial position for tracking target obtains the image information of tracking target, determines working as the tracking target according to described image information
The current location of the tracking target is sent to the projector by front position；
The projector is used to receive the ambient sound that the voice collection device is sent, and is also used to acquire to described image
Device sends the image information of tracking target, and receives the current location of the tracking target of described image acquisition device transmission.
The beneficial effect of embodiment of the present invention is: being in contrast to the prior art down, embodiment of the present invention provides
A kind of projecting method based on location tracking, device, projector and optical projection system, which comprises receive first environment sound
Sound；Judge whether the first environment sound includes preset starting information, if comprising the sound of the starting information will be carried
Sound is determined as target sound, the target sound is determined as to track target, and started according to the starting information and projected；According to
The target sound of the first environment sound determines the initial position of the tracking target, and matches the initial position and thrown
Shadow；Receive second environment sound；Judge whether the second environment sound includes target sound, if comprising according to described
The target sound of two ambient sounds determines the current location of the tracking target；According to the current location switching of the tracking target
Projecting direction.The above method is tracked by the way that the sound for carrying starting information is determined as target sound, is accurately determined
The tracking target of projection, meanwhile, projecting direction is determined by the location tracking to target sound, can be realized trend projection.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these are exemplary
Illustrate not constitute the restriction to embodiment, the element in attached drawing with same reference numbers label is expressed as similar member
Part, unless there are special statement, composition does not limit the figure in attached drawing.
Fig. 1 is a kind of structural schematic diagram for optical projection system that embodiment of the present invention provides；
Fig. 2 is a kind of flow diagram for projecting method based on location tracking that embodiment of the present invention provides；
Fig. 3 is a kind of structural schematic diagram for projection arrangement based on location tracking that embodiment of the present invention provides；
Fig. 4 is a kind of structural schematic diagram for projection arrangement based on location tracking that one embodiment of the present invention provides；
Fig. 5 is a kind of structural schematic diagram for projection arrangement based on location tracking that one embodiment of the present invention provides；
Fig. 6 is a kind of structural schematic diagram for projection arrangement based on location tracking that one embodiment of the present invention provides；
Fig. 7 is a kind of structural schematic diagram for projection arrangement based on location tracking that one embodiment of the present invention provides；
Fig. 8 is a kind of structural schematic diagram for projector that embodiment of the present invention provides.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
Attached drawing in mode carries out clear, complete description to the technical solution in embodiment of the present invention, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without making creative work, belongs to the present invention
The range of protection.
It should be noted that be expressed " being fixed on " another element when element, it can directly on the other element,
Or there may be one or more elements placed in the middle therebetween.When an element is expressed " connection " another element, it can be with
It is directly to another element or there may be one or more elements placed in the middle therebetween.Used in this specification
Term "vertical", "horizontal", "left" and "right" and similar statement are for illustrative purposes only.
In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other not
Constituting conflict can be combined with each other.
Embodiment one
Referring to Fig. 1, being a kind of structural schematic diagram for optical projection system that embodiment of the present invention provides, the optical projection system 1
It include: projector 10, voice collection device 20 and image collecting device 30, the voice collection device 20 and image collecting device
30 are connect by wired or wireless mode with projector 10, wherein radio connection can connect for Wi Fi connection, bluetooth
It connects, and etc.；Wired connection mode can be then attached by interface.
Specifically, the voice collection device 20 is for acquiring ambient sound, and ambient sound collected is sent to
Projector 10, wherein the ambient sound includes first environment sound and second environment sound.
The voice collection device 20 includes microphone array, and the microphone array includes the wheat that quantity is 3 to 7
Gram wind, according to the quantity of the microphone, the microphone array can be set as linear array, triarray, annular array,
Circular array and rectangular array etc., the distance being arranged between each microphone can be carried out according to the size in actual application environment space
Adjustment, since the position of each microphone setting is different, the distance that the same sound reaches different microphones is different, so that sound
There are time difference/difference of vibration when reaching voice collection device 20 can position collected sound based on this.At this
In invention embodiment, the voice collection device 20 includes the annular microphone array being made of 5 microphones, each Mike
The distance between wind is 8cm, and volume shared by the microphone array of this kind layout is not too large, and makes the voice collection device
20 can collect the ambient sound with obvious time difference or difference of vibration, convenient to position to tracking target.
Described image acquisition device 30 is used to receive the initial position of the tracking target of the transmission of projector 10, and according to described
The initial position for tracking target obtains the image information of tracking target, determines working as the tracking target according to described image information
The current location of the tracking target is sent to the projector 10 by front position.Wherein, described image acquisition device 30 can be with
For full-view camera, pan-shot can be carried out to the environment of application, picture or video can be shot.
The ambient sound that the projector 10 is then sent for receiving the voice collection device 20, is also used to the figure
As the image information of the transmission tracking target of acquisition device 30, and receive working as the tracking target that described image acquisition device 30 is sent
Front position.Wherein, which is set on holder or multi-dimensional movement platform, can be realized the rotation of spherical surface formula, and multi-angle changes
Become projecting direction.
The voice collection device 20 and image collecting device 30 can be set to any position of projector space.
Further, in some embodiments, the optical projection system can also include: sets adjacent with 10 camera lens of projector
The photographic device (not shown) set, the photographic device can projected image of the projection of acquired projections instrument 10 to view field, and energy
Enough to be corrected to the projected image, the correction includes: trapezoidal projection correction, projection brightness correction etc..
Further, in some embodiments, the optical projection system further include: storage device, it is aobvious for storing projection
Show content.
In the optical projection system 1, projector 10 is able to carry out the projecting method based on location tracking, passes through projector
10 can accurately determine projection with the cooperation of the voice collection device 20, image collecting device 30, the projector 10
Target is tracked, and location tracking can be carried out to tracking target and determine projecting direction, realizes trend projection.
Embodiment two
Referring to Fig. 2, being a kind of process signal for projecting method based on location tracking that embodiment of the present invention provides
Figure, the method are applied to projector, comprising:
S10: first environment sound is received；
S20: judge whether the first environment sound includes preset starting information, if comprising will open described in carrying
The sound of dynamic information is determined as target sound, the target sound is determined as to track target, and opened according to the starting information
Dynamic projection.
In embodiments of the present invention, voice collection device before the first environment sound is the inactive projection of projector
The sound acquired in real time.
The preset starting information is the pre-set instruction that can start projector, can be set to " open
Begin ", " action ", the vocabulary such as " starting ", may be set to be short sentences such as " projection please be start ", when projector is from first environment sound
When recognizing the preset starting information in sound, then start projection.Projector can be identified preset by way of modeling
Start information, specifically, hidden Markov model (HMM) can be used to preset starting information in projector, such as " beginning ",
The short sentences such as the vocabulary such as " action ", " starting " or " please start projection " are trained modeling, by described in the judgement of the model built
Whether first environment sound includes preset starting information.For example, projector can be started by presetting in projector
Starting information be " beginnings ", when user A sending " beginning " instruction when, the collected first environment sound of voice collection device
In comprising should " beginnings " start information, after being sent to projector, projector by foundation model judge the first environment sound
In contain preset starting information " beginning ", then starting projection.
Further, the preset starting information can also be as the mark for tracking target, i.e., when projector is from first
When recognizing the preset starting information in ambient sound, then it represents that the sound for carrying the starting information is that projector is projected
The target sound of tracking, the i.e. target sound are the tracking target of projector, and subsequent projector is by chasing after the target sound
Track positions to determine projecting direction.
Further, in some embodiments, before step S20, received first environment sound can also be carried out
Background interference noise is eliminated in denoising, is improved projector and is identified the accuracy of preset starting information, and facilitates projector
Target sound in first environment sound is extracted.
S30: the initial position of the tracking target is determined according to the target sound of the first environment sound, and matches institute
Initial position is stated to be projected.
The target sound according to the first environment sound determines that the initial position of the tracking target specifically includes:
The characteristic parameter of the target sound of the first environment sound is extracted, the characteristic parameter includes acoustic amplitudes or sound
Sound arrival time；
The initial position of tracking target is determined according to the acoustic amplitudes of the target sound or sound arrival time.
Specifically, because of the position difference that each microphone of the microphone array in voice collection device is arranged, so that sound
There are apparent time difference or difference of vibration for the collected sound of sound acquisition device, wherein from the mesh of the first environment sound
The acoustic amplitudes extracted in mark sound can obtain the difference of vibration, extract from the target sound of the first environment sound
Sound arrival time can obtain the time difference.
In embodiments of the present invention, there are two types of the modes for determining the initial position of tracking target, comprising: is based on the time difference
Localization method and localization method based on sound property.
It is described collected by the microphone using different location in microphone array based on the localization method of time difference
There is sound different arrival times (i.e. time difference) to be positioned, and the starting of tracking target is calculated according to geometric function
Position.Specifically, can be come using multiple signal classification algorithm (Multiple Signal Classification, MUSIC)
Determine the generation direction of sound, and then the initial position that direction occurs and determines tracking target for passing through the sound.
It is described to be collected based on the localization method of sound property by the microphone using different location in microphone array
Sound have different amplitudes (i.e. difference of vibration) positioned, specifically, according to the physics of microphone each in microphone array
Alternate position spike calculates the amplitude value of the every bit on microphone array line, according to the amplitude apart from sound source same distance position
Identical feature finds the point on same sound arc, position, that is, tracking target start bit of the point by mathematical model
It sets.
Further, the matching initial position is projected specifically:
Judge whether initial position and the preset initial projections direction of projector of the tracking target are consistent, if unanimously,
The projection angle of projector is not changed then；If inconsistent, establish spatial model calculating position and change angle, projector then basis
The position change angle switches projecting direction.
Wherein, the side that the preset initial projections direction, that is, position of the projector where when inactive is projected
To, for example, be reset to due east direction when projector is inactive, then the preset initial projections direction be positive east to.
The initial position of the tracking target is consistent with the preset initial projections direction, i.e., preset initial projections side
To the initial position for just projecting extremely tracking target, and just project to the right opposite for tracking target.
It is described that projecting direction is switched according to the position change angle further include: according to the position change of the tracking target
The projection rotational angle of angle calculation projector, projector is further according to the projection rotational angle in holder or multi-dimensional movement platform
Upper rotation switches projecting direction, so that right opposite of the projector to tracking target.
S40: second environment sound is received；
S50: judging whether the second environment sound includes target sound, if comprising according to the second environment sound
The target sound of sound determines the current location of the tracking target.
Specifically, the second environment sound is the sound that voice collection device acquires in real time after projector starting projects.
It is described to judge whether the second environment sound specifically includes comprising target sound: when projector is from first environment sound
After determining target sound in sound, the tone color of the target sound namely the waveform of the target sound are extracted, by the second ring
Sound identical with the waveform of target sound of the first environment sound is judged whether there is in the sound of border to judge described
It whether include target sound in two ambient sounds.
The target sound according to the second environment sound determines that the current location of the tracking target specifically includes:
The characteristic parameter of the target sound of the second environment sound is extracted, the characteristic parameter includes acoustic amplitudes or sound
Sound arrival time；
According to the acoustic amplitudes of the target sound or sound arrival time determine tracking target work as position.
Specifically, because of the position difference that each microphone of the microphone array in voice collection device is arranged, so that sound
There are apparent time difference or difference of vibration for the collected sound of sound acquisition device, wherein from the mesh of the second environment sound
The acoustic amplitudes extracted in mark sound can obtain the difference of vibration, extract from the target sound of the second environment sound
Sound arrival time can obtain the time difference.
In embodiments of the present invention, it determines the mode of the current location of tracking target and determines the start bit of tracking target
The mode set is identical, and this is no longer going to repeat them.
Further, in some embodiments, the method also includes:
In preset time threshold, if the target sound is not recognized from the second environment sound, to image
Acquisition device sends the initial position of the tracking target, so that described image acquisition device obtains the image of the tracking target
Information, and current location that is determining according to described image information and sending the tracking target；
Receive the current location for the tracking target that described image acquisition device is sent.
Specifically, the preset time threshold can be set to 30s, 1mi n or 5mi n etc., the time threshold energy
Enough so that projector starts standby positioning tracing scheme --- the location tracking to tracking target is realized by image collecting device,
Improve the accuracy of location tracking.
Wherein, projector is by sending the initial position for tracking target to image collecting device, so that Image Acquisition
Location tracking of the device starting to tracking target.
In some embodiments, the projector also to image collecting device send projector starting projection when
Between, the time of projector starting projection namely user issue the time for starting information.
Described image acquisition device finds the picture of corresponding time point shooting according to the time of projector starting projection
Perhaps video frame and pair according to the initial position of the tracking target on the picture of corresponding time point shooting or video frame
Answer the image information of position acquisition tracking target；Mouth-Shape Recognition is carried out in the image information, is identified and in first environment sound
In the shape of the mouth as one speaks of default starting information matches that recognizes, for example, if the default starting information recognized in first environment sound is
" beginning ", then image collecting device identifies and " beginning " matched shape of the mouth as one speaks in described image information；To the use for recognizing the shape of the mouth as one speaks
Family carries out recognition of face, determines the user for tracking target；Picture or video frame of the image collecting device in current shooting
Upper carry out recognition of face, determines the current location of tracking target, and the current location of the tracking target is sent to projector.I.e.
Described image acquisition device carries out location tracking to tracking target according to face, prevents user mobile but does not make a sound and project
The case where instrument can not be positioned appearance improves the accuracy of trend projection.
S60: projecting direction is switched according to the current location of the tracking target.
It is described to be specifically included according to the current location switching projecting direction of the tracking target:
Judge whether the current location of the tracking target changes, calculating position changes angle if changing；
Switch projecting direction according to the position change angle.
Whether the current location for judging tracking target, which changes, is specially determined the current location with previous stage
The position of tracking target be compared to be judged.For example, if the previous stage of the current location of the tracking target is determined
The position of tracking target be the initial position for tracking target, by the current location of the tracking target and the tracking target
Initial position is compared judgement, and the position difference of the two then indicates that the current location of the tracking target changes.
When the current location of the tracking target changes, establishes spatial model calculating position and change angle, according to described
The projection rotational angle of position change angle calculation projector, projector is further according to the projection rotational angle in holder or more
It is rotated on dimension sports platform, switches projecting direction, so that right opposite of the projector to tracking target.
Further, the method also includes: whether the target sound for judging the second environment sound includes preset
Standby information, if comprising being closed and being projected according to the standby information.
The preset standby information is the pre-set instruction that can close projector, can be set to " knot
The vocabulary such as beam ", " over ", " closing ", may be set to be short sentences such as " please close projection ", when projector is from second environment sound
In when recognizing the preset standby information, then close projection.Projector can be identified by way of modeling it is preset to
Hidden Markov model (HMM) can be used to preset standby information in machine information, specifically, projector, such as " end ",
The short sentences such as the vocabulary such as " over ", " closing " or " please close projection " are trained modeling, judge described by the model built
Whether two ambient sounds include preset standby information.For example, projector can be closed by presetting in projector
Starting information is " closing ", when user A issues the instruction of " closing ", in the collected second environment sound of voice collection device
Start information comprising " closing ", after being sent to projector, projector is judged in the second environment sound by the model established
Preset standby information " closing " is contained, projection is then closed, the projector is reset to the default initial projections position.
Further, in some embodiments, the projector can also dim all or part of project content, keep away
Exempt from projected light beam direct irradiation eyes and causes discomfort.Specifically, the projection extremely tracking objective eye that will be recognized can be passed through
The value of projected pixel becomes black to realize.
The beneficial effect of embodiment of the present invention is: being in contrast to the prior art down, embodiment of the present invention provides
A kind of projecting method based on location tracking, device, projector and optical projection system, which comprises receive first environment sound
Sound；Judge whether the first environment sound includes preset starting information, if comprising the sound of the starting information will be carried
Sound is determined as target sound, the target sound is determined as to track target, and started according to the starting information and projected；According to
The target sound of the first environment sound determines the initial position of the tracking target, and matches the initial position and thrown
Shadow；Receive second environment sound；Judge whether the second environment sound includes target sound, if comprising according to described
The target sound of two ambient sounds determines the current location of the tracking target；According to the current location switching of the tracking target
Projecting direction.The above method is tracked by the way that the sound for carrying starting information is determined as target sound, is accurately determined
The tracking target of projection, meanwhile, projecting direction is determined by the location tracking to target sound, can be realized trend projection.
Embodiment three
Referring to Fig. 3, being a kind of structural representation for projection arrangement based on location tracking that embodiment of the present invention provides
Figure, being somebody's turn to do the projection arrangement 300 based on location tracking includes:
First receiving module 301, first receiving module 301 is for receiving first environment sound；
First control module 302, first control module 302 is for judging whether the first environment sound includes pre-
If starting information, if comprising, will carry it is described starting information sound be determined as target sound, the target sound is true
It is set to tracking target, and is started according to the starting information and projected；
First locating module 303, first locating module 303 are used for the target sound according to the first environment sound
It determines the initial position of the tracking target, and matches the initial position and projected；
Second receiving module 304, second receiving module 304 is for receiving second environment sound；
Second locating module 305, second locating module 305 is for judging whether the second environment sound includes mesh
Sound is marked, if comprising determining the current location of the tracking target according to the target sound of the second environment sound；
First switching module 306, first switching module 306 are used to be switched according to the current location of the tracking target
Projecting direction.
Referring to Fig. 4, described device further include:
Extraction module 307, the extraction module 307 are used to extract the feature ginseng of the target sound of the first environment sound
Number, the characteristic parameter includes acoustic amplitudes or sound arrival time；
Third locating module 308, the third locating module 308 are used for acoustic amplitudes or sound according to the target sound
Sound arrival time determines the initial position of tracking target.
Referring to Fig. 5, described device further include:
First sending module 309, first sending module 309 are used in preset time threshold, if not from described the
The target sound is recognized in two ambient sounds, then the initial position of the tracking target is sent to image collecting device, with
Described image acquisition device is set to obtain the image information of the tracking target, and according to described image information is determining and sends
Track the current location of target；
Third receiving module 310, the third receiving module 310 are used to receive the tracking of described image acquisition device transmission
The current location of target.
Referring to Fig. 6, described device further include:
Computing module 311, the computing module 311 are used to judge whether the current location of the tracking target to change, if
Change then calculating position and changes angle；
Second switching module 312, second switching module 312 are used to switch projection side according to the position change angle
To.
Referring to Fig. 7, described device further include:
Second control module 313, second control module 313 are used to judge the target sound of the second environment sound
It whether include preset standby information, if comprising being closed and being projected according to the standby information.
It is understood that the first control module 302 judges the after the first receiving module 301 receives first environment sound
It whether include preset starting information in one ambient sound, if starting projection comprising if, meanwhile, the sound for starting information will be carried
Be determined as target sound, target sound be determined as tracking target and carries out location tracking, the first locating module 303 then according to this
The target sound of one ambient sound determines the initial position of tracking target, and matches the initial position and projected, specifically,
The characteristic parameter of the target sound of first environment sound is extracted by extraction module 307, including when acoustic amplitudes or sound arrival
Between, the initial position of tracking target is determined according to the acoustic amplitudes or sound arrival time through third locating module 308；Into one
Step ground, the second receiving module 304 receive second environment sound, the second locating module 305 judge be in the second environment sound
No includes target sound, if the current location for determining tracking target according to the second environment sound comprising if, wherein if certain
Do not recognize target sound in time threshold from second environment sound, then the first sending module 309 is sent out to image collecting device
The initial position of tracking target is sent, so that described image acquisition device obtains the image information of the tracking target, and according to institute
It states image information determination and sends the current location of the tracking target, third receiving module 310 then receives described image acquisition
The current location for the tracking target that device is sent；First switching module 306 then switches projection according to the current location of tracking target
Direction specifically judges whether the current location for tracking target changes by computing module 311, calculating position changes if changing
Varied angle, the second switching module 312 switch projecting direction according to the position change angle；Finally, if the second control module 313
Judge then to be closed and thrown according to the standby information comprising preset standby information in the target sound of the second environment sound
Shadow, and it is reset to preset initial projections direction.
Since device embodiments and method implementation are based on same design, in the not mutual conflicting premise of content
Under, the content of device embodiments can be with quoting method embodiment, and this is no longer going to repeat them.
The beneficial effect of embodiment of the present invention is: being in contrast to the prior art down, embodiment of the present invention provides
A kind of projecting method based on location tracking, device, projector and optical projection system, which comprises receive first environment sound
Sound；Judge whether the first environment sound includes preset starting information, if comprising the sound of the starting information will be carried
Sound is determined as target sound, the target sound is determined as to track target, and started according to the starting information and projected；According to
The target sound of the first environment sound determines the initial position of the tracking target, and matches the initial position and thrown
Shadow；Receive second environment sound；Judge whether the second environment sound includes target sound, if comprising according to described
The target sound of two ambient sounds determines the current location of the tracking target；According to the current location switching of the tracking target
Projecting direction.The above method is tracked by the way that the sound for carrying starting information is determined as target sound, is accurately determined
The tracking target of projection, meanwhile, projecting direction is determined by the location tracking to target sound, can be realized trend projection.
Example IV
Referring to Fig. 8, being a kind of structural schematic diagram for projector that embodiment of the present invention provides, which can
Execute the projecting method based on location tracking, moreover it is possible to realize the function of the modules of the projection arrangement based on location tracking.
As shown in figure 8, the projector 10 includes:
One or more processors 11 and memory 12.Wherein, in Fig. 8 by taking a processor 11 as an example.
Processor 11 can be connected with memory 12 by bus or other modes, to be connected as by bus in Fig. 8
Example.
Memory 12 is used as a kind of non-volatile computer readable storage medium storing program for executing, can be used for storing non-volatile software journey
Sequence, non-volatile computer executable program and module, such as the throwing based on location tracking in above embodiment of the present invention
The corresponding program instruction of image method and the corresponding module of projection arrangement based on location tracking are (for example, the first receiving module
301, first judges control module 302, the first locating module 303, the second receiving module 304, judges locating module 305 and first
Switching module 306 etc.).Non-volatile software program, instruction and mould of the processor 11 by operation storage in memory 12
Block, thereby executing the various function application and data processing of the projecting method based on location tracking, i.e. the realization above method is real
Apply the function of the modules of the projecting method based on location tracking in mode and above-mentioned apparatus embodiment.
Memory 12 may include storing program area and storage data area, wherein storing program area can storage program area,
Application program required at least one function；Storage data area can store the use according to the projection arrangement based on location tracking
The data etc. created.
The storage data area is also stored with preset data, including preset starting information, preset initial projections side
To, preset time threshold, preset standby information etc..
In addition, memory 12 may include high-speed random access memory, it can also include nonvolatile memory, such as
At least one disk memory, flush memory device or other non-volatile solid state memory parts.In some embodiments, it deposits
Optional reservoir 12 includes the memory remotely located relative to processor 11, these remote memories can be by being connected to the network extremely
Processor 11.The example of above-mentioned network includes but is not limited to internet, intranet, local area network, mobile radio communication and its group
It closes.
Described program instruction and one or more modules are stored in the memory 12, when by one or more
When a processor 11 executes, each step of the projecting method based on location tracking in above-mentioned any means embodiment is executed
Suddenly, alternatively, realizing the function of the modules of the projection arrangement based on location tracking in above-mentioned any device embodiment.
Method provided by above embodiment of the present invention can be performed in the said goods, has the corresponding function mould of execution method
Block and beneficial effect.The not technical detail of detailed description in the present embodiment, reference can be made to above embodiment of the present invention is provided
Method.
Embodiment of the present invention additionally provides a kind of non-volatile computer readable storage medium storing program for executing, described computer-readable to deposit
Storage media is stored with computer executable instructions, which is executed by one or more processors, such as Fig. 8
In a processor 11, may make computer to execute the projection side based on location tracking in above-mentioned any means embodiment
Each step of method, alternatively, realizing each mould of the projection arrangement based on location tracking in above-mentioned any device embodiment
The function of block.
Embodiment of the present invention additionally provides a kind of computer program product, and the computer program product includes being stored in
Computer program on non-volatile computer readable storage medium storing program for executing, the computer program include program instruction, when the journey
Sequence instruction is executed by one or more processors, such as in Fig. 8 a processor 11, and it is above-mentioned any to may make that computer executes
Each step of the projecting method based on location tracking in method implementation, alternatively, realizing above-mentioned any device embodiment party
The function of the modules of the projection arrangement based on location tracking in formula.
Device embodiments described above are only schematical, wherein the module as illustrated by the separation member
It may or may not be physically separated, the component shown as module may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules realize the purpose of present embodiment scheme.
Through the above description of the embodiments, those of ordinary skill in the art can be understood that each embodiment
The mode of general hardware platform can be added to realize by software, naturally it is also possible to pass through hardware.Those of ordinary skill in the art can
Being with all or part of the process in understanding realization above embodiment method can be relevant hard by computer program instructions
Part is completed, and the program can be stored in a computer-readable storage medium, the program is when being executed, it may include as above
State the process of the implementation method of each method.Wherein, the storage medium can be magnetic disk, CD, read-only memory (Read-
Only Memory, ROM) or random access memory (RandomAccessMemory, RAM) etc..
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (12)
1. a kind of projecting method based on location tracking characterized by comprising
Receive first environment sound；
Judge whether the first environment sound includes preset starting information, if comprising the starting information will be carried
Sound is determined as target sound, the target sound is determined as to track target, and started according to the starting information and projected；
The initial position of the tracking target is determined according to the target sound of the first environment sound, and matches the start bit
It sets and is projected；
Receive second environment sound；
Judge whether the second environment sound includes target sound, if comprising according to the target of the second environment sound
Sound determines the current location of the tracking target；
Switch projecting direction according to the current location of the tracking target.
2. the method according to claim 1, wherein the target sound according to the first environment sound is true
The initial position of the fixed tracking target specifically includes:
The characteristic parameter of the target sound of the first environment sound is extracted, the characteristic parameter includes that acoustic amplitudes or sound arrive
Up to the time；
The initial position of tracking target is determined according to the acoustic amplitudes of the target sound or sound arrival time.
3. the method according to claim 1, wherein the method also includes:
In preset time threshold, if the target sound is not recognized from the second environment sound, to Image Acquisition
Device sends the initial position of the tracking target, so that described image acquisition device obtains the image letter of the tracking target
Breath, and current location that is determining according to described image information and sending the tracking target；
Receive the current location for the tracking target that described image acquisition device is sent.
4. method according to claim 1 to 3, which is characterized in that described according to the current of the tracking target
Position switching projecting direction specifically includes:
Judge whether the current location of the tracking target changes, calculating position changes angle if changing；
Switch projecting direction according to the position change angle.
5. method according to claim 4, which is characterized in that the method also includes:
Whether the target sound for judging the second environment sound includes preset standby information, if comprising, according to it is described to
Machine information closes projection.
6. a kind of projection arrangement based on location tracking characterized by comprising
First receiving module, first receiving module is for receiving first environment sound；
First control module, first control module is for judging whether the first environment sound includes preset starting letter
Breath, if comprising the sound for carrying the starting information is determined as target sound, the target sound is determined as to track mesh
Mark, and started according to the starting information and projected；
First locating module, first locating module are used to chase after according to the determination of the target sound of the first environment sound
The initial position of track target, and match the initial position and projected；
Second receiving module, second receiving module is for receiving second environment sound；
Second locating module, second locating module for judging whether the second environment sound includes target sound, if
It include that the current location of the tracking target is then determined according to the target sound of the second environment sound；
First switching module, first switching module are used to switch projecting direction according to the current location of the tracking target.
7. device according to claim 6, which is characterized in that described device further include:
Extraction module, the extraction module are used to extract the characteristic parameter of the target sound of the first environment sound, the spy
Levying parameter includes acoustic amplitudes or sound arrival time；
Third locating module, the third locating module are used for acoustic amplitudes or sound arrival time according to the target sound
Determine the initial position of tracking target.
8. device according to claim 6, which is characterized in that described device further include:
First sending module, first sending module is used in preset time threshold, if not from the second environment sound
In recognize the target sound, then to image collecting device send it is described tracking target initial position so that described image
Acquisition device obtains the image information of the tracking target, and according to the determination of described image information and sends the tracking target
Current location；
Third receiving module, the third receiving module are used to receive the current of the tracking target of described image acquisition device transmission
Position.
9. according to device described in claim 6-8 any one, which is characterized in that described device further include:
Computing module, the computing module are used to judge whether the current location of the tracking target to change, and calculate if changing
Position change angle；
Second switching module, second switching module are used to switch projecting direction according to the position change angle.
10. device according to claim 9, which is characterized in that described device further include:
Second control module, second control module is for judging whether the target sound of the second environment sound includes pre-
If standby information, if comprising, according to the standby information close project.
11. a kind of projector characterized by comprising
At least one processor；And
The memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
It manages device to execute, so that at least one described processor is able to carry out method described in claim 1-5 any one.
12. a kind of optical projection system characterized by comprising
Projector described in voice collection device, image collecting device and claim 11；
The ambient sound is sent to the projector, the ring for acquiring ambient sound by the voice collection device
Border sound includes first environment sound and second environment sound；
Described image acquisition device is used to receive the initial position for the tracking target that the projector is sent, and according to the tracking
The initial position of target obtains the image information of tracking target, and the present bit of the tracking target is determined according to described image information
It sets, the current location of the tracking target is sent to the projector；
The projector is used to receive the ambient sound that the voice collection device is sent, and is also used to described image acquisition device
The image information of tracking target is sent, and receives the current location of the tracking target of described image acquisition device transmission.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711444243.4A CN109982054B (en) | 2017-12-27 | 2017-12-27 | Projection method and device based on positioning tracking, projector and projection system |
| PCT/CN2018/088981 WO2019128098A1 (en) | 2017-12-27 | 2018-05-30 | Projection method and apparatus based on positioning and tracking, projector and projection system |
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| CN201711444243.4A CN109982054B (en) | 2017-12-27 | 2017-12-27 | Projection method and device based on positioning tracking, projector and projection system |
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| WO (1) | WO2019128098A1 (en) |
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| CN112051867A (en) * | 2020-09-15 | 2020-12-08 | 成都极米科技股份有限公司 | Method and device for automatically adjusting projection position, projection equipment, system and medium |
| CN112578909A (en) * | 2020-12-15 | 2021-03-30 | 北京百度网讯科技有限公司 | Equipment interaction method and device |
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| CN111722186B (en) * | 2020-06-30 | 2024-04-05 | 中国平安人寿保险股份有限公司 | Shooting method and device based on sound source localization, electronic equipment and storage medium |
| CN112416135A (en) * | 2020-12-15 | 2021-02-26 | 广州富港万嘉智能科技有限公司 | Projection parameter determination method and device based on indoor positioning and projection system |
| CN113284490B (en) * | 2021-04-23 | 2022-09-09 | 歌尔股份有限公司 | Control method, device and equipment of electronic equipment and readable storage medium |
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| WO2019128098A1 (en) | 2019-07-04 |
| CN109982054B (en) | 2022-04-12 |
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