CN110062217A - A kind of alignment methods and alignment device of tri-color laser - Google Patents
A kind of alignment methods and alignment device of tri-color laser Download PDFInfo
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- CN110062217A CN110062217A CN201910372307.7A CN201910372307A CN110062217A CN 110062217 A CN110062217 A CN 110062217A CN 201910372307 A CN201910372307 A CN 201910372307A CN 110062217 A CN110062217 A CN 110062217A
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- 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]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
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- 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]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3161—Modulator illumination systems using laser light sources
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Abstract
The invention discloses a kind of alignment methods of tri-color laser and alignment devices, this method comprises: step S1, offer tri-color laser, the tricolor light irradiated by picking up the tri-color laser that camera takes obtain image three-colo(u)r；Step S2, it is identified by pixel color and three primary colors separation is carried out to image three-colo(u)r, respectively obtain feux rouges image, green light image and blue light images；Step S3, feux rouges image, green light image and the blue light images respective centre coordinate in image three-colo(u)r are calculated；If step S4, the distance between feux rouges image, green light image and centre coordinate of blue light images three meet coincidence range, the alignment of tri-color laser is completed；If the distance between feux rouges image, green light image and centre coordinate of blue light images three do not meet coincidence range, then adjust tri-color laser, then step S1 to step S4 is executed again, until the distance between feux rouges image, green light image and centre coordinate of blue light images three meet coincidence range.
Description
Technical field
The present invention relates to light source adjusting method technical fields, more particularly, to a kind of alignment methods of tri-color laser
And alignment device.
Background technique
Micro- shadow casting technique was in swift and violent developing stage in recent years, and the light source of micro-projector generally uses three colors to swash at present
Light device obtains multifarious kind of color by the synthesis of Red Green Blue, show be exactly it is seen that five face six
Color.Therefore, the accuracy of the Laser synthesizing (combine) of tri-color laser just seems particularly critical and important.However currently,
Can only use in the prior art expensive AA (Active Alignment) equipment to three kinds of colors of tri-color laser go out light into
Row alignment.
In view of this, it is desirable to provide the new technical solution of one kind is to solve the above problems.
Summary of the invention
It is an object of the present invention to provide a kind of alignment methods of tri-color laser and the new solutions of alignment device.
According to an aspect of the invention, there is provided a kind of alignment methods of tri-color laser, this method comprises:
Step S1, tri-color laser is provided, the tricolor light irradiated by picking up the tri-color laser that camera takes,
Obtain image three-colo(u)r；
Step S2, by pixel color identify to the image three-colo(u)r carry out three primary colors separation, respectively obtain feux rouges image,
Green light image and blue light images；
Step S3, the feux rouges image, green light image and the blue light images respective centre coordinate in image three-colo(u)r are calculated；
If the distance between step S4, the described feux rouges image, green light image and centre coordinate of blue light images three meet
It is overlapped range, then completes the alignment of the tri-color laser；If in the feux rouges image, green light image and blue light images three
The distance between heart coordinate does not meet coincidence range, then according to the feux rouges image, green light image and blue light images it is respective in
Then heart Coordinate Adjusting tri-color laser executes step S1 to step S4 again, until the feux rouges image, green light image and blue light
The distance between the centre coordinate of image three meets coincidence range.
Optionally, the step S1 includes:
Three coloured light synthesizing optical device is placed in the light-emitting window position of the tri-color laser.
Optionally, the three coloured light synthesizing optical device includes half-reflection and half-transmission dielectric layer.
Optionally, the tri-color laser includes red light-emitting source, green luminescence source and blue light emitting source.
Optionally, the step S2 includes:
Each pixel in the image three-colo(u)r is traversed, the trichromatic type that each pixel is included is recorded, point
It is other to be extracted to trichromatic pixel of the same race, then respectively obtain feux rouges image, green light image and blue light images.
Optionally, after the step S2 further include: the feux rouges image, green light image and blue light images are filtered and
Binary conversion treatment.
Optionally, the step S3 includes:
Seek respectively the feux rouges image, in green light image and blue light images pixel coordinate average value, the coordinate is flat
Mean value is respective centre coordinate in the image three-colo(u)r.
Optionally, in the step S4, the adjustment tri-color laser includes adjusting the posture of tri-color laser and opposite
Position.
Optionally, the posture of the tri-color laser includes the translational movement and rotation amount of laser.
According to another aspect of the present invention, a kind of alignment device of tri-color laser is provided, described device includes:
Image pickup model, the tricolor light irradiated for picking up the tri-color laser that camera takes obtain three colors
Image；
Image separation module, for carrying out three primary colors separation to the image three-colo(u)r by pixel color identification, respectively
To feux rouges image, green light image and blue light images；
Centre coordinate computing module, for calculating the feux rouges image, green light image and blue light images in image three-colo(u)r
Respective centre coordinate；
Judgment module, for judging between the feux rouges image, green light image and the centre coordinate of blue light images three
Whether distance meets coincidence range.
The alignment methods step of tri-color laser of the present invention is simple, easy to operate, sets without using expensive adjusting
Standby, sexual valence is relatively high.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is a kind of step flow chart of the alignment methods of tri-color laser of the present invention；
Fig. 2 be tri-color laser in a kind of alignment methods of tri-color laser of the present invention, three coloured light synthesizing optical device and
The position view of camera；
Fig. 3 is to carry out three primary colors separation to the image three-colo(u)r in a kind of alignment methods of tri-color laser of the present invention to show
It is intended to.
Fig. 4 is a kind of structural block diagram of the alignment device of tri-color laser of the present invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
The embodiment of the invention provides a kind of alignment methods of tri-color laser, as shown in Figure 1, this method specifically include with
Lower step:
Step S1, it is powered to the tri-color laser of alignment to be debugged, tri-color laser can launch phase after powered up
The laser for answering color shoots the tricolor light that tri-color laser irradiates using camera, by picking up the wink taken
When picture obtain image three-colo(u)r；
The tri-color laser includes shining for red light-emitting source, green luminescence source and these three colors of blue light emitting source
Source, tri-color laser can issue feux rouges, green light and blue light after being powered, these three colors are three primary colors.In use camera to three
When the tricolor light that color laser illumination goes out is shot, the three coloured light that tri-color laser irradiates can be directly shot with camera
Line, the tricolor light that tri-color laser can also be allowed to irradiate project form hot spot on a receiver first, then use
Camera shoots the hot spot.
Step S2, pixel color identification is carried out to the image three-colo(u)r, is then carried out on the basis of pixel color identifies
Three primary colors separation, respectively obtains feux rouges image, green light image and blue light images；
Step S3, the feux rouges image, green light image and the blue light images respective center in image three-colo(u)r are calculated separately
Coordinate；It is the overlapping cases that can determine whether the feux rouges image, green light image and blue light images by above three centre coordinate.
Step S4, according to the overlapping cases of the feux rouges image, green light image and the centre coordinate of blue light images three into
Row operates in next step, if the distance between the feux rouges image, green light image and centre coordinate of blue light images three meet weight
Range is closed, then illustrates the alignment for having completed the tri-color laser；If the feux rouges image, green light image and blue light images three
The distance between centre coordinate of person does not meet coincidence range, then each according to the feux rouges image, green light image and blue light images
From centre coordinate adjust tri-color laser, step S1 to step S4 is then executed again, until the feux rouges image, green light image
And the distance between centre coordinate of blue light images three meets coincidence range.
Due to being adjusted to tri-color laser, thus the tricolor light for needing again to irradiate tri-color laser into
Row shooting, calculates respective centre coordinate at three primary colors separation, then judges whether the distance between three centre coordinates meet weight
Range is closed, pair of the tri-color laser is then completed until the distance between three centre coordinates meet and are overlapped range
It is quasi-.The method that real-time perfoming shooting, three primary colors are separated, calculated during the adjustment of tri-color laser in this way, can be accurately
Three-color light source is aligned.
In one embodiment, as shown in Fig. 2, the laser of the sending of the tri-color laser 1 is before reaching camera 2, meeting
The transmission effect for first passing around a three coloured light synthesizing optical device 3, specifically, in the light-emitting window position of the tri-color laser 1
It sets place and places three coloured light synthesizing optical device 3, the laser that the tri-color laser issues is by three coloured light synthesizing optical device 3
Tricolor light is synthesized after transmission effect.Specifically, the tri-color laser 1 includes red light-emitting source, green luminescence source and indigo plant
The light emitting source of these three colors of light light emitting source.The three coloured light synthesizing optical device 3 can be half-reflection and half-transmission dielectric layer, described half
The light-emitting window of tri-color laser 1 described in the back side face of anti-semi-transparent dielectric layer is placed.The characteristics of half-reflection and half-transmission dielectric layer is, from
The light that its front is injected can be totally reflected, and can all be transmitted from the light that its back side is injected.Therefore, by half anti-half
The light-emitting window of tri-color laser 1 described in the back side face of saturating dielectric layer is placed, then the red light-emitting source of tri-color laser 1, green light
Feux rouges, green light and the blue light that light emitting source and blue light emitting source accordingly issue meeting after the transmission of half-reflection and half-transmission dielectric layer effect
Tricolor light is synthesized, before tricolor light reaches camera 2, the reflex of a static state MEMS galvanometer can be first passed through, when
After tricolor light reaches camera 2, camera 2 can shoot sample moment picture, to obtain image three-colo(u)r.In use camera 2 to three
When the tricolor light that color laser illumination goes out is shot, three colors that tri-color laser irradiate can be directly shot with camera 2
Light, the tricolor light that tri-color laser can also be allowed to irradiate project form hot spot on a receiver first, then adopt
The hot spot is shot with camera 2.
In one embodiment, the step S2 includes:
Each pixel in the image three-colo(u)r is traversed, the trichromatic type that each pixel is included is recorded, point
It is other to be extracted to trichromatic pixel of the same race, then respectively obtain feux rouges image, green light image and blue light images.
As shown in figure 3, theoretically, the light for three kinds of colors that tri-color laser 1 is issued, if i.e. feux rouges, green light, blue light
It beats to the same coordinate position, then the hot spot of feux rouges, green light and blue light can be completely overlapped to form white light；But absolutely mostly
In number situation, the light of three kinds of colors will not just be projected at the same coordinate position, therefore just will appear point of three kinds of colors
It dissipates；One of fritter A is taken in Fig. 3, checks and records R value, G value corresponding to each pixel and B value, as Fig. 3 in A
Shown in the table on middle the right.
All pixels are traversed, after the R value of each pixel, G value and B value are split according to the method described above,
The channel R, the channel G and channel B of each pixel will be respectively obtained；Three color is assumed according to the resolution ratio of the camera 2
Image one shares X*Y pixel, then every kind of channel --- and the channel R, the channel G and channel B include X*Y pixel, then
This X*Y pixel in every kind of channel is the image for respectively constituting corresponding color, that is, X*Y pixel in the channel R constitutes red
Light image, X*Y pixel in the channel G constitute green light image, the X*Y pixel composition blue light images in blue channel.
For example, it is assumed that the image three-colo(u)r one shares 640*480 pixel, then feux rouges image, green light image and indigo plant after separation
Light image includes 640*480 pixel, i.e. R:640*480；G:640*480；B:640*480.
In one embodiment, the step S3 includes:
Seek respectively the feux rouges image, in green light image and blue light images pixel coordinate average value, the coordinate is flat
Mean value is respective centre coordinate in the image three-colo(u)r.
In one embodiment, in step s 4, if feux rouges image, green light image and blue light figure by being calculated
As the distance between the centre coordinate of three meets coincidence range, then illustrate the red-light source of tri-color laser 1, green-light source and
Feux rouges hot spot, green light hot spot and the blue light hot spot that blue light source is issued satisfactory coincidence range, therefore three colors swash
Red-light source, green-light source and the blue light source of light device 1 have been in the state of alignment, then do not need to tri-color laser 1 into
Any adjusting of row.
And if through between the centre coordinate of the feux rouges image, green light image and the blue light images three that being calculated away from
From coincidence range is not met, then need according to the feux rouges image, green light image and the respective centre coordinate of blue light images to three
Color laser 1 is adjusted, specifically the posture of adjustment tri-color laser 1 and relative position, the posture of the tri-color laser 1
Translational movement and rotation amount including laser；After the posture of tri-color laser 1 and relative position are adjusted, it is necessary to again
The tricolor light irradiated to tri-color laser 1 is shot, and obtains image three-colo(u)r, and it is former then to carry out three to the image three-colo(u)r again
Color separation, respectively obtains feux rouges image, green light image and blue light images, then calculate again the feux rouges image, green light image and
Blue light images are in centre coordinate respective in image three-colo(u)r and judge whether the distance between three centre coordinates meets coincidence model
It encloses.That is, being picked up, separating and calculating to image three-colo(u)r in real time with real-time perfoming tune during tri-color laser 1 adjusts
Whole feedback, until the distance between the feux rouges image, green light image and centre coordinate of blue light images three meet coincidence model
It encloses, then completes the alignment of the tri-color laser 1.
In one embodiment, after the step S2 further include: to the feux rouges image, green light image and blue light images into
Row filtering and binary conversion treatment.
The interference shadow of ambient can be eliminated after being filtered to the feux rouges image, green light image and blue light images
It rings；Image binaryzation processing is the process that whole image can be showed to apparent black and white effect, the binaryzation of image
Processing can be such that the data volume in image is greatly reduced, so as to highlight the profile of target.The binaryzation of image is conducive to figure
Picture is further processed, and becomes image simply, and data volume reduces, and can highlight the profile of interested target, favorably
In when being further processed to image, do not further relate to the multilevel values of pixel, processing made to become simple, and the processing of data and
Decrement is small.
To the feux rouges image, green light image and blue light images be filtered and binary conversion treatment after, the feux rouges image,
The calculating process of green light image and the blue light images respective centre coordinate in image three-colo(u)r is as follows:
The each pixel for traversing the feux rouges image, green light image and blue light images, the pixel for being 1 by all pixels value
The X-coordinate and Y-coordinate of point are separately summed, and the pixel number n that statistical pixel values are 1, the pixel for being then 1 with pixel value
The pixel number n that the X-coordinate of point and the coordinate total value of Y-coordinate are 1 divided by pixel value, i.e., seek the picture that pixel value is 1 respectively
The X-coordinate of vegetarian refreshments and the average value of Y-coordinate, the average value are the centre coordinate.The calculating process is formulated as follows:
Pixel (x, y): the coordinate (x, y) of pixel is indicated；
Pixel (value): the pixel value of pixel is indicated；
N: initial value=0 counts the quantity of Pixel (value)=1；
Pixel(x,y)Centroid: indicate the centre coordinate found out.
The embodiment of the invention also provides a kind of alignment devices of tri-color laser, as shown in figure 4, the device includes:
Image pickup model 100 can be used for picking up the tricolor light that the tri-color laser that camera takes irradiates, obtain
Obtain image three-colo(u)r；Wherein, described image pickup model 100 can be used for picking up the tri-color laser irradiation that camera directly takes
Tricolor light out can be also used for picking up the hot spot that the tricolor light that the tri-color laser that camera takes irradiates is formed.
Image separation module 200 can be used for carrying out three primary colors separation to the image three-colo(u)r by pixel color identification,
Respectively obtain feux rouges image, green light image and blue light images；Wherein, described image separation module 200 specifically can be used for traversing
Each pixel in the image three-colo(u)r records the trichromatic type that each pixel is included, respectively to of the same race
Trichromatic pixel extracts, then respectively obtains feux rouges image, green light image and blue light images.
Centre coordinate computing module 300 can be used for calculating the feux rouges image, green light image and blue light images in three colors
Respective centre coordinate in image；Wherein, the centre coordinate computing module 300 specifically can be used for seeking the feux rouges figure
The coordinate average value of pixel in picture, green light image and blue light images, the coordinate average value are respective in the image three-colo(u)r
Centre coordinate.
Judgment module 400 can be used for judging the feux rouges image, green light image and the centre coordinate of blue light images three
The distance between whether meet coincidence range.According to the judging result of the judgment module 400, next step can be carried out, directly
Extremely the distance between the feux rouges image, green light image and centre coordinate of blue light images three meet coincidence range.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (9)
1. a kind of alignment methods of tri-color laser characterized by comprising
Step S1, tri-color laser is provided, the tricolor light irradiated by picking up the tri-color laser that camera takes obtains
Image three-colo(u)r；
Step S2, it is identified by pixel color and three primary colors separation is carried out to the image three-colo(u)r, respectively obtain feux rouges image, green light
Image and blue light images；
Step S3, the feux rouges image, green light image and the blue light images respective centre coordinate in image three-colo(u)r are calculated；
If the distance between step S4, the described feux rouges image, green light image and centre coordinate of blue light images three meet coincidence
Range then completes the alignment of the tri-color laser；If the feux rouges image, green light image and the center of blue light images three are sat
The distance between mark does not meet coincidence range, then is sat according to the feux rouges image, green light image and the respective center of blue light images
Mark adjustment tri-color laser, then executes step S1 to step S4, until the feux rouges image, green light image and blue light images again
The distance between centre coordinate of three meets coincidence range.
2. the alignment methods of tri-color laser according to claim 1, which is characterized in that the step S1 includes:
Three coloured light synthesizing optical device is placed in the light-emitting window position of the tri-color laser.
3. the alignment methods of tri-color laser according to claim 2, which is characterized in that the three coloured light synthesizing optical device
Part includes half-reflection and half-transmission dielectric layer.
4. the alignment methods of tri-color laser according to any one of claim 1-3, which is characterized in that three color swashs
Light device includes red light-emitting source, green luminescence source and blue light emitting source.
5. the alignment methods of tri-color laser according to claim 1, which is characterized in that the step S2 includes:
Each pixel in the image three-colo(u)r is traversed, the trichromatic type that each pixel is included is recorded, it is right respectively
It is extracted with trichromatic pixel of the same race, then respectively obtains feux rouges image, green light image and blue light images.
6. the alignment methods of tri-color laser according to claim 5, which is characterized in that after the step S2 further include:
To the feux rouges image, green light image and blue light images are filtered and binary conversion treatment.
7. the alignment methods of tri-color laser according to claim 6, which is characterized in that the step S3 includes:
Seek respectively the feux rouges image, in green light image and blue light images pixel coordinate average value, the coordinate average value
Respective centre coordinate in the as described image three-colo(u)r.
8. the alignment methods of tri-color laser according to claim 1, which is characterized in that in the step S4, the tune
Whole tri-color laser includes adjusting posture and the relative position of tri-color laser；The posture of the tri-color laser includes laser
Translational movement and rotation amount.
9. a kind of alignment device of tri-color laser, which is characterized in that described device includes:
Image pickup model, the tricolor light irradiated for picking up the tri-color laser that camera takes obtain image three-colo(u)r；
Image separation module respectively obtains red for carrying out three primary colors separation to the image three-colo(u)r by pixel color identification
Light image, green light image and blue light images；
Centre coordinate computing module, it is respective in image three-colo(u)r for calculating the feux rouges image, green light image and blue light images
Centre coordinate；
Judgment module, for judging the distance between the feux rouges image, green light image and centre coordinate of blue light images three
Whether coincidence range is met.
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| US20170041582A1 (en) * | 2015-03-09 | 2017-02-09 | Laser Projection Technologies, Inc. | 3d laser projection, scanning and object tracking |
| CN108632593A (en) * | 2018-05-31 | 2018-10-09 | 歌尔股份有限公司 | Modification method, device and the equipment of colour convergence error |
| CN108983427A (en) * | 2017-06-02 | 2018-12-11 | 深圳超多维科技有限公司 | Image projection processing equipment and image projection processing method |
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2019
- 2019-05-06 CN CN201910372307.7A patent/CN110062217A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170041582A1 (en) * | 2015-03-09 | 2017-02-09 | Laser Projection Technologies, Inc. | 3d laser projection, scanning and object tracking |
| CN108983427A (en) * | 2017-06-02 | 2018-12-11 | 深圳超多维科技有限公司 | Image projection processing equipment and image projection processing method |
| CN108632593A (en) * | 2018-05-31 | 2018-10-09 | 歌尔股份有限公司 | Modification method, device and the equipment of colour convergence error |
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Effective date of registration: 20201014 Address after: 261031 north of Yuqing street, east of Dongming Road, high tech Zone, Weifang City, Shandong Province (Room 502, Geer electronic office building) Applicant after: GoerTek Optical Technology Co.,Ltd. Address before: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Applicant before: GOERTEK Inc. |
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Application publication date: 20190726 |