CN106155423A - Vehicle-mounted laser projection key system and vehicle - Google Patents
Vehicle-mounted laser projection key system and vehicle Download PDFInfo
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- CN106155423A CN106155423A CN201510206306.7A CN201510206306A CN106155423A CN 106155423 A CN106155423 A CN 106155423A CN 201510206306 A CN201510206306 A CN 201510206306A CN 106155423 A CN106155423 A CN 106155423A
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Abstract
The invention provides a kind of vehicle-mounted laser projection key system and vehicle, this system includes: laser projection module, for the digital-to-analogue information according to view field to corresponding view field's projected keyboard image；Image capture module, is used for gathering described keyboard image；Processor, processor prestores the digital-to-analogue information of view field, and processor judges, for the multiple keyboard images collected according to digital-to-analogue information and the image capture module of view field, the button that user triggers on keyboard image, and generates the action command that button is corresponding.The vehicle-mounted laser projection key system of the present invention, does not use parallel light emitting device, only by image capture module, projection module and processor, can realize the function of laser projection key system in car in conjunction with vehicle digital-to-analogue.
Description
Technical field
The present invention relates to automobile technical field, particularly to a kind of vehicle-mounted laser projection key system and vehicle.
Background technology
At present, the innovation in terms of automobile has quite a few from electronic applications.Some novel and practical electronic technology, at vapour
Integrated under car application background and improved, being created the system made new advances, as vehicle-mounted laser projects key system, thus being garage
Industry services.Vehicle-mounted optical projection system is typically formed by by photographic head, projection module, directional light part, and the position of projection is plane.
Default figure is projected by projection module；When finger contact button plane, finger is owing to blocking directional light and variable color；Take the photograph
Identify this change as head and identify key position, thus trigger respective behavior.This technology it is critical only that directional light part,
And limited by projection surface.
Prior art uses directional light device, and perspective plane is necessary for plane；It is limited by directional light part, modulates relatively difficult；No
Can be used for inside car；Cannot be carried out the control of in-car entertainment system and vehicle body.
Summary of the invention
In view of this, it is contemplated that propose a kind of vehicle-mounted laser projection key system, this system does not use parallel light emitting device,
Only by image capture module, projection module and processor, the laser projection button system in car can be realized in conjunction with vehicle digital-to-analogue
The function of system.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of vehicle-mounted laser projection key system, including: laser projection module, the digital-to-analogue information according to view field that is used for is to right
The view field's projected keyboard image answered；Image capture module, is used for gathering described keyboard image；Processor, described processor
Prestoring the digital-to-analogue information of described view field, described processor is for the digital-to-analogue information according to described view field and described image
Multiple keyboard images that acquisition module collects judge the button that user triggers on described keyboard image, and generate described button pair
The action command answered.
Further, the digital-to-analogue information of described view field includes the angle between described view field and described image capture module
And distance.
Further, described processor is additionally operable to: according to the digital-to-analogue information of described view field judge view field position and away from
From；Laser projection module described in position according to described view field and distance controlling projects.
Further, described processor is used for: compare the plurality of keyboard image, may carry out button behaviour to identify
The finger made；The digital-to-analogue information of described keyboard image with described view field is compared, described may carry out button to determine
The finger of operation is apart from the distance of described keyboard image, and whether triggers described keyboard image according to finger described in described Distance Judgment
On button；When judging that described finger triggers the button on described keyboard image, determine triggering according to the position of described finger
Button, and generate the action command that described button is corresponding.
Further, described laser projection module and described image capture module have default layout angle and position.
Further, the plurality of keyboard image is compared by described processor, to identify the hands that may carry out button operation
Refer to, specifically include: characteristic information extraction from the plurality of keyboard image, wherein, described characteristic information include finger classification,
Finger and the range information of view field and finger enter the action trend of described view field；According to described characteristic information identification
Go out the finger that may carry out button operation.
Further, described image capture module is photographic head.
Further, described photographic head is one or more.
Relative to prior art, vehicle-mounted laser of the present invention projection key system has the advantage that
Vehicle-mounted laser of the present invention projection key system, do not use parallel light emitting device, only by image capture module,
Projection module and processor, can realize the function of laser projection key system in car in conjunction with vehicle digital-to-analogue.This system is by right
The position angle of projection module and image capture module is quantified, and combines vehicle digital-to-analogue, can carry out finger manipulation accurately
Judge, have the advantage that
(1) do not rely on directional light, reduce directional light module cost；
(2) perspective plane is not limited solely to plane, i.e. can be projected on curved surface；
(3) according to customer demand, projected position can customize；
(4) popularization of application in car, can strengthen the control in terms of Infotainment even vehicle body, further enhancing car load
Science and technology sense and the demand of fashion.
Further object is that a kind of vehicle of proposition, this vehicle does not use parallel light emitting device, only by image
Acquisition module, projection module and processor, can realize the function of laser projection key system in car in conjunction with vehicle digital-to-analogue.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of vehicle, is provided with the vehicle-mounted laser projection key system as described in above-described embodiment, and this vehicle does not use directional light to send out
Injection device, only by image capture module, projection module and processor, can realize the laser in car in conjunction with vehicle digital-to-analogue and throw
The function of shadow key system.
Described vehicle is identical relative to prior art have the advantage that, at this not with above-mentioned vehicle-mounted laser projection key system
Repeat again.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, the illustrative examples of the present invention and
Its explanation is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structured flowchart of the vehicle-mounted laser projection key system described in the embodiment of the present invention；
Fig. 2 is laser projection and the recognition principle schematic diagram of the vehicle-mounted laser projection key system described in the embodiment of the present invention；
Fig. 3 is the laser projection process schematic of the vehicle-mounted laser projection key system described in the embodiment of the present invention；
Fig. 4 is the button image identification process schematic of the vehicle-mounted laser projection key system described in the embodiment of the present invention；
Fig. 5 is the core control algolithm schematic diagram of the vehicle-mounted laser projection key system described in the embodiment of the present invention；
Fig. 6 is laser projection device Y (longitudinally) the direction view of the vehicle-mounted laser projection key system described in the embodiment of the present invention；
Fig. 7 is laser projection device X (laterally) the direction view of the vehicle-mounted laser projection key system described in the embodiment of the present invention；
Fig. 8 is single or double photographic head Y (longitudinally) the direction view of the vehicle-mounted laser projection key system described in the embodiment of the present invention；
Fig. 9 is single camera X (laterally) the direction view of the vehicle-mounted laser projection key system described in the embodiment of the present invention；
Figure 10 is dual camera X (laterally) the direction view of the vehicle-mounted laser projection key system described in the embodiment of the present invention；
And
Figure 11 is the image restoring principle schematic of the vehicle-mounted laser projection key system described in the embodiment of the present invention.
Description of reference numerals:
100-vehicle-mounted laser projection key system, 110-laser projection module, 120-image capture module and 130-processor.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 1 is the structured flowchart of vehicle-mounted laser projection key system according to an embodiment of the invention.
As it is shown in figure 1, vehicle-mounted laser projects key system 100 according to an embodiment of the invention, including: laser projection mould
Block 110, image capture module 120 and processor 130.
Wherein, laser projection module 110 is used for the digital-to-analogue information according to view field to corresponding view field's projected keyboard image.
Wherein, the digital-to-analogue information of view field includes but not limited to the angle and distance between view field and image capture module.
Image capture module 120 is used for gathering keyboard image.Image capture module for example, photographic head.The quantity of photographic head is permissible
It it is one, it is also possible to for multiple.
Processor 130 prestores the digital-to-analogue information of view field, and processor 130 is for the digital-to-analogue information according to view field and figure
The multiple keyboard images collected as acquisition module 120 judge the button that user triggers on keyboard image, and it is corresponding to generate button
Action command.
In one embodiment of the invention, processor 130 is additionally operable to: judge view field according to the digital-to-analogue information of view field
Position and distance；Position and distance controlling laser projection module 110 according to view field project.
In one embodiment of the invention, processor 130 is for the digital-to-analogue information according to view field and image capture module
The 120 multiple keyboard images collected judge the button that user triggers on keyboard image, and generate the action command that button is corresponding,
Specifically, multiple keyboard images are compared by processor 130, to identify the finger that may carry out button operation, enter one
Step ground, the digital-to-analogue information of keyboard image with view field is compared by processor 130, may carry out button operation to determine
The distance of finger distance keyboard image, and whether trigger the button on keyboard image according to Distance Judgment finger, when judging that finger touches
When sending out the button on keyboard image, determine the button of triggering according to the position of finger, and generate the action command that button is corresponding.
Further, multiple keyboard images are compared by processor 130, to identify the finger that may carry out button operation,
Specifically including: characteristic information extraction from multiple keyboard images, wherein, characteristic information includes finger classification, finger and projected area
The range information in territory and finger enter the action trend of view field；Identify according to characteristic information and may carry out button operation
Finger.
In one embodiment of the invention, laser projection module 110 and image capture module 120 have default layout angle
And position.Laser projection module 110 and image capture module 120 are carried out the restriction of position and angle, can be prevented effectively from by
Block.
The operation principle vehicle-mounted laser of the embodiment of the present invention being projected key system below in conjunction with accompanying drawing 2-11 is carried out in further detail
Explanation.
As in figure 2 it is shown, vehicle-mounted laser projection key system is appreciated that as being made up of projection arrangement and view field.Wherein, throw
Image device laser technology projects the virtual key (i.e. keyboard image) of given shape, and button is carried out image automatic identification.
View field is the supporting body of button, and this region can be the fixed bits such as instrument board, front windshield, glass for vehicle window and seat back
Put；People presses the virtual key of view field by finger.
As in figure 2 it is shown, wherein, projection arrangement is divided into laser projection, image recognition and core to the principle of vehicle-mounted laser projection button
Algorithm three part forms.View field can carry various virtual key, can be plane domain, it is also possible to for non-planar area.This
The key patterns of a little projections is typically set by car load factory, and user therefrom selects；Can also be customized by user.Wherein, black in figure
Color square represents the button of system identification.
How this vehicle-mounted laser projection button works, and relies primarily on: system control strategy, and core control algolithm and image recognition are former
Reason.Specifically:
System control strategy:
Shown in laser projection procedure chart 3:
1) laser projection key device is connected on the IGN electricity of car load, is in off-position during IGN OFF；
2) when IGN electrically connects (that is: KL15), this device processes waiting state, including projection section and Image recognizing section
Point；
3) when there being projection requirements, typically by middle control screen or the triggering of other button, i.e. carry out projecting preparing；
4), before projection starts, judge according to the image advanced person's line position collected；
5), after determining position, further according to information such as light, the virtual key of suitable light intensity is projected；
6) if it is determined that during time-out occurs, automatically jump to wait collecting part, and make corresponding prompting.
Then, user just can operate according to by virtual key accordingly.
As shown in Figure 4, concrete button image identification process is as follows for button image identification process:
1) first two steps such as the 1st during laser projection) step and the 2nd) step；
2) when there being projection demand, carry out button image gatherer process the most simultaneously；
3) when there being projection requirements, typically by middle control screen or the triggering of other button, i.e. carry out projecting preparing；
4) according to projected position and the effectiveness of core algorithm key range and the position of button；
5) according to the meaning corresponding signal of transmission represented by the button identified to ECU, the action of ECU response subsequently；
6) if it is determined that during time-out occurs, automatically jump to wait collecting part, and make corresponding prompting.
The realization that it is critical only that core control algolithm of the realization of two above process, i.e. according to data analysis, the fructufy of contrast
Execute control strategy.
Core control algolithm:
Core control algolithm is as it is shown in figure 5, implementing procedure is as follows:
1) when needs are operated by laser projection button, button image gathers first acquired projections area image；
2) image collected passes to the information comparisons such as analysis of image data center, wait and position；
3) the digital-to-analogue information in vehicle is converted into specific data form, leaves in data base；
4) data in data base are extracted, find out the useful information such as angle, distance, and be placed on the wait of specific region
Call；
5) graphical analysis center extraction is to after data, it is determined that go out location of projection and distance etc.,
6) this information is issued projection section；
7) laser projection part is according to the instruction at graphical analysis center, projects accordingly；
Then step 1 is carried out) and step 2)；
8) button image is resolved to the action of button, and instruction is issued relevant electronic control module；
9) electronic control module performs corresponding action, as turned on radio, opens skylight etc..
If needing to import new digital-to-analogue information, step 3) and 4) need to re-start；If it is not required, then step 3) and
4) perform once.
Before core control algolithm is implemented, need to import in ECU by the characteristic of vehicle digital-to-analogue, it is simple to projector distance and position
The judgement put etc..
Image recognition principle:
The most crucial part that realizes of this system is exactly the just image recognition of the finger to people, and this is also the master with other optical projection system
Distinguish, and the realization of image recognition principle depends on three factors: the angle of photographic head and projection module is arranged, image restoring
Principle and the contrast of data.
First factor: layout angle
In location arrangements, Fig. 6 and Fig. 7 represents the layout angle of laser projection module, Fig. 8～Figure 10 represents photographic head cloth angle setting
Degree.Wherein, X-direction represents observes from the front of user, and Y-direction represents observes from the side of user, a and b represents
The boundary point at projection interface, c represents the center of projection, and θ, σ, α and β represent angle.
In Fig. 6, θ≤45 °, concrete angle determines according to actual vehicle calibration value；In Fig. 7, σ=90 °.
In Fig. 8, α≤45 °, photographic head may be one, it is also possible to is the overlap of two；In Fig. 9, β=90 °；In Figure 10,
All < 90 °, concrete angle determines β 1 and β 2 according to actual vehicle calibration value.
The requirement less than 45° angle in the Y direction of laser projection module and photographic head, is to carry out button behaviour to meet finger
When making, the fewest blocks transmission light；Photographic head is to block certain also at finger at the angle of inclination of X and Y-direction
During a little button, can be from multi-angle key range.
Except the setting of above position, also a premise must is fulfilled for, and any moment can only have a finger to touch laser projection
Button.
Use single photographic head or two photographic head, should be according to concrete vehicle and concrete position depending on.Generally,
Single camera is sufficient for using requirement, but some specific positions, such as instrument board etc., needs the support of dual camera.
Second factor: image restoring principle
When collecting button image, needing image restoring, camera collection as shown in figure 11, is arrived by reduction process
The process of image restoring.
X and Y in Figure 11 is merely representative of direction, and implication is same with previous section, before not drawing image restoring in Figure 11
Distortion shape.First image is carried out flake etc. and processes the image being reduced into certain angle, then the image collected is carried out X side
To angle reduction treatment, then carry out the angle reduction treatment of Y-direction, i.e. can get original image.
3rd factor: Data Comparison
The contrast of data, refers to the contrast between image and the vehicle digital-to-analogue of reduction, and it is right to go back the longitudinal direction between original image
Ratio, carries out the extraction of data characteristics, thus identifies the action of finger key.
The data characteristics extracted has finger and the distance versus of operating surface, the finger entrance projected area judging finger classification, recognizing
The action trend analysis in territory.
Judge process and relevant foundation:
1) according to the contrast between image, extract the characteristic such as finger movement trend and movement range, identify possible wanting
Carry out the finger of button operation；
2) according to the contrast of image Yu vehicle digital-to-analogue, identify the distance of possible finger, want button operation apart near being
Finger；
3) repeat two above process, result is carried out the above confirmation of n times.If result is identical, finger identification is complete；
4) if it is not the same, repeat 1) and 2), and result is repeated 2N time, have N+1 time and show as same possibility, i.e.
Can end operation, and enter next step；If still can not identify, prompting re-operates.
5) finger position determines, gets final product key range according to position data.
Step 4) in can not identify and the operation that carries out is to ensure that the reasonability of software control flow, with other button
System is the same, occurs that the probability of this situation is extremely low.
Vehicle-mounted laser projection key system according to embodiments of the present invention, does not use parallel light emitting device, adopts only by image
Collection module, projection module and processor, can realize the function of laser projection key system in car in conjunction with vehicle digital-to-analogue.This is
System is by being quantified the position angle of projection module and image capture module, and combines vehicle digital-to-analogue, can be to finger manipulation
Accurately judge, have the advantage that
(1) do not rely on directional light, reduce directional light module cost；
(2) perspective plane is not limited solely to plane, i.e. can be projected on curved surface；
(3) according to customer demand, projected position can customize；
(4) popularization of application in car, can strengthen the control in terms of Infotainment even vehicle body, further enhancing car load
Science and technology sense and the demand of fashion.
Further, embodiment of the invention discloses that a kind of vehicle, this vehicle is provided with the vehicle-mounted laser described in above-described embodiment
Projection key system.This vehicle does not use parallel light emitting device, only by image capture module, projection module and processor,
The function of laser projection key system in car can be realized in conjunction with vehicle digital-to-analogue.This system is by projection module and image acquisition
The position angle of module is quantified, and combines vehicle digital-to-analogue, can accurately judge finger manipulation.
It addition, other of vehicle according to embodiments of the present invention constitutes and acts on the most all
It is known, in order to reduce redundancy, does not repeats.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and former
Within then, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. a vehicle-mounted laser projection key system, it is characterised in that including:
Laser projection module, for the digital-to-analogue information according to view field to corresponding view field's projected keyboard image；
Image capture module, is used for gathering described keyboard image；
Processor, described processor prestores the digital-to-analogue information of described view field, and described processor is for according to described projected area
Multiple keyboard images that the digital-to-analogue information in territory and described image capture module collect judge that user triggers on described keyboard image
Button, and generate the action command that described button is corresponding.
Vehicle-mounted laser the most according to claim 1 projection key system, it is characterised in that the digital-to-analogue of described view field
Information includes the angle and distance between described view field and described image capture module.
Vehicle-mounted laser the most according to claim 1 projection key system, it is characterised in that described processor is additionally operable to:
Digital-to-analogue information according to described view field judges position and the distance of view field；
Laser projection module described in position according to described view field and distance controlling projects.
Vehicle-mounted laser the most according to claim 1 projection key system, it is characterised in that described processor is used for: right
The plurality of keyboard image is compared, to identify the finger that may carry out button operation；To described keyboard image and described throwing
The digital-to-analogue information in territory, shadow zone is compared, with determine the described finger that may carry out button operation apart from described keyboard image away from
From, and whether trigger the button on described keyboard image according to finger described in described Distance Judgment；When judging that described finger triggers institute
When stating the button on keyboard image, determine the button of triggering according to the position of described finger, and generate the action that described button is corresponding
Instruction.
Vehicle-mounted laser the most according to claim 4 projection key system, it is characterised in that described laser projection module and
Described image capture module has default layout angle and position.
6. project key system according to the vehicle-mounted laser described in claim 4 or 5, it is characterised in that described processor is to institute
State multiple keyboard image to compare, to identify the finger that may carry out button operation, specifically include:
Characteristic information extraction from the plurality of keyboard image, wherein, described characteristic information includes finger classification, finger and projection
The range information in region and finger enter the action trend of described view field；
The finger that may carry out button operation is identified according to described characteristic information.
Vehicle-mounted laser the most according to claim 1 projection key system, it is characterised in that described image capture module is
Photographic head.
Vehicle-mounted laser the most according to claim 1 projection key system, it is characterised in that described photographic head be one or
Person is multiple.
9. a vehicle, it is characterised in that arrange and project button system just like the vehicle-mounted laser described in any one of claim 1-8
System.
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| CN201510206306.7A CN106155423A (en) | 2015-04-28 | 2015-04-28 | Vehicle-mounted laser projection key system and vehicle |
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| CN106600721A (en) * | 2017-01-19 | 2017-04-26 | 广州市果豆科技有限责任公司 | Intelligent parking management system based on virtual projection keyboard |
| CN108668058A (en) * | 2018-04-23 | 2018-10-16 | 常州星宇车灯股份有限公司 | A kind of interior button operation system based on image recognition |
| CN108981182A (en) * | 2017-05-31 | 2018-12-11 | 芜湖美的厨卫电器制造有限公司 | Control method, device and the water heater of water heater |
| CN110658924A (en) * | 2018-06-29 | 2020-01-07 | 比亚迪股份有限公司 | Vehicle key system, control method thereof and vehicle |
| CN110733433A (en) * | 2018-07-19 | 2020-01-31 | 宝沃汽车（中国）有限公司 | Vehicle-mounted projection display system and vehicle |
| CN110913255A (en) * | 2019-10-31 | 2020-03-24 | 广东长虹电子有限公司 | Remote controller capable of laser outputting virtual keyboard and control method thereof |
| CN110971947A (en) * | 2019-11-14 | 2020-04-07 | 广东长虹电子有限公司 | Laser television capable of bidirectionally projecting and control method thereof |
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| CN110658924A (en) * | 2018-06-29 | 2020-01-07 | 比亚迪股份有限公司 | Vehicle key system, control method thereof and vehicle |
| CN110733433A (en) * | 2018-07-19 | 2020-01-31 | 宝沃汽车（中国）有限公司 | Vehicle-mounted projection display system and vehicle |
| CN110913255A (en) * | 2019-10-31 | 2020-03-24 | 广东长虹电子有限公司 | Remote controller capable of laser outputting virtual keyboard and control method thereof |
| CN110971947A (en) * | 2019-11-14 | 2020-04-07 | 广东长虹电子有限公司 | Laser television capable of bidirectionally projecting and control method thereof |
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Application publication date: 20161123 |