CN108521566A - A kind of calibration method and device of projected image - Google Patents
A kind of calibration method and device of projected image Download PDFInfo
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- CN108521566A CN108521566A CN201810447374.6A CN201810447374A CN108521566A CN 108521566 A CN108521566 A CN 108521566A CN 201810447374 A CN201810447374 A CN 201810447374A CN 108521566 A CN108521566 A CN 108521566A
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- camera lens
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- coordinate data
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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
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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]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
Abstract
An embodiment of the present invention provides a kind of calibration method of projected image and devices, are related to display technology field, and this method includes：The lens location of projection device is positioned by locator, obtains camera lens coordinate data, the camera lens coordinate data is sent to calibration module；The calibration module according to the camera lens coordinate data, judge the lens location whether and there are deviations for preset camera lens reference position；If there are deviations for the lens location and preset camera lens reference position, adjustment information is generated；And it according to the adjustment information, adjusts the lens location and is extremely overlapped with the camera lens reference position.The embodiment of the present invention realizes the automatic calibration between projected image and projection screen, improves the calibration efficiency of projected image departing from the position relationship between human eye subjective judgement projected image and projection screen.
Description
Technical field
The present invention relates to display technology fields, the calibration method more particularly to a kind of projected image and a kind of projected image
Calibrating installation.
Background technology
With the fast development of display technology, the application of projection device is more and more extensive, to people’s lives, study and
Work brings great convenience.
For example, there is a kind of laser television in TV market at present.Laser television is to use reflective ultrashort out-of-focus projection
Laser projection and the projection screen composition of technology, it can also show good television image under the higher environment of brightness.
For the display effect of the television image of guarantee laser television, need to calibrate the projected image of laser television.
The projected image of laser television is also known as television image, is cast out by the camera lens of laser projection.Specifically, swashing
When light television operations, need the television image that laser projection is launched being aligned with the projection screen of laser television so that launch
Television image can project on projection screen.Current laser television typically passes through human eye subjective judgement television image and throwing
Position correction relationship between shadow curtain.When the television image that laser television is launched cannot project on projection screen completely, user
It can be by manually adjusting the lens location of laser projection so that television image is aligned with projection screen, so that TV figure
As that can project on projection screen completely, ensure the display effect of television image.But manually adjust the camera lens of laser projection
Position affects the calibration efficiency of projected image with randomness, contingency.
Invention content
In view of the above problems, it is proposed that the embodiment of the present invention overcoming the above problem or at least partly in order to provide one kind
A kind of calibration method of the projected image to solve the above problems and a kind of corresponding calibrating installation of projected image.
To solve the above-mentioned problems, the embodiment of the invention discloses a kind of calibration methods of projected image, including：
The lens location of projection device is positioned by locator, camera lens coordinate data is obtained, the camera lens is sat
Mark data are sent to calibration module；
The calibration module judges whether the lens location refers to preset camera lens according to the camera lens coordinate data
There are deviations for position；If there are deviations for the lens location and preset camera lens reference position, adjustment information is generated；And according to
According to the adjustment information, adjusts the lens location and extremely overlapped with the camera lens reference position.
Optionally, the lens location for judging the projection device whether and there are deviations for preset camera lens reference position
Before, further include：The fixation projected position of the projection device is positioned by locator, obtains screen coordinate data,
The screen coordinate data are sent to calibration module；The calibration module is based on the screen coordinate data, determines projection screen
Dimension information and location information；Operation is carried out according to the dimension information and the location information, determines the projection device
Corresponding preset camera lens reference position.
Optionally, the dimension information includes screen length, screen width and screen thickness, and the calibration module is according to institute
It states dimension information and the location information carries out operation, determine that the projection device corresponds to preset camera lens reference position, including：
Based on the screen length, the reference center position of the camera lens is determined；
Preset projectional angle is corresponded to using the camera lens of the screen width, the location information and the projection device
Information determines the reference altitude position of the camera lens；
Preset projection is corresponded to than letter using the camera lens of the screen width, the screen thickness and the projection device
Breath, determines the reference projector distance position of the camera lens.
Optionally, the lens location includes projector distance position, camera lens height and position and optical center position, the school
Quasi-mode block judge the lens location whether and there are deviations for preset camera lens reference position, including：When the projector distance position
Set deviate it is described with reference to projected position when, judge that there are deviations for the lens location and the camera lens reference position；When the mirror
When the reference center position is deviateed in head center, judge that there are deviations for the lens location and the camera lens reference position；
When the camera lens height and position deviates the reference altitude position, judge that the lens location is deposited with the camera lens reference position
In deviation.
Optionally, according to the adjustment information, the lens location is adjusted to being overlapped with the camera lens reference position, is wrapped
It includes：According to the projector distance adjusting parameter in the adjustment information, the projector distance position is adjusted, after adjustment
Projector distance position overlapped with reference to projected position with described；It is right according to the center adjusting parameter in the adjustment information
The optical center position is adjusted, and the optical center position after adjustment is overlapped with the reference center position；Foundation
Height and position adjusting parameter in the adjustment information is adjusted the camera lens height and position, the camera lens after adjustment
Height and position is overlapped with the reference altitude position.
Correspondingly, the embodiment of the invention also discloses a kind of calibrating installations of projection device, including：Locator and calibrating die
Block；
The locator is positioned for the lens location to projection device, obtains camera lens coordinate data, by the mirror
Head coordinate data is sent to calibration module；
The calibration module, for according to the camera lens coordinate data, judge the lens location whether with preset mirror
There are deviations for head reference position；If there are deviations for the lens location and the camera lens reference position, adjustment information is generated；With
And it according to the adjustment information, adjusts the lens location and is extremely overlapped with the camera lens reference position.
Optionally, the locator includes：First locator and the second locator；
First locator, positions for the lens location to projection device, obtains camera lens coordinate data, by institute
It states camera lens coordinate data and is sent to calibration module；
Second locator positions for the fixation projected position to the projection device, obtains screen coordinate
The screen coordinate data are sent to calibration module by data；
The calibration module is additionally operable to be based on the screen coordinate data, determines the dimension information and position letter of projection screen
Breath；Operation is carried out according to the dimension information and the location information, determines that the projection device corresponds to preset camera lens reference
Position.
Optionally, the dimension information includes screen length, screen width and screen thickness, and the calibration module includes：
Arithmetic unit and receiver；
The receiver, for receiving the camera lens coordinate data and the screen coordinate data；
The arithmetic unit determines the reference center position of the camera lens for being based on the screen length；Using the screen
The camera lens of curtain width, the location information and the projection device corresponds to preset projection angle information, determines the camera lens
Reference altitude position；Preset throwing is corresponded to using the camera lens of the screen width, the screen thickness and the projection device
Penetrate the reference projector distance position that the camera lens is determined than information.
Optionally, the lens location includes projector distance position, camera lens height and position and optical center position, the school
Quasi-mode block further includes：Controller；
The controller, for when the reference projected position is deviateed in the projector distance position, judging the camera lens
There are deviations for position and the camera lens reference position；When the reference center position is deviateed in the optical center position, judgement
There are deviations for the lens location and the camera lens reference position；When the camera lens height and position deviates the reference altitude position
When, judge that there are deviations for the lens location and the camera lens reference position.
Optionally, the controller includes：
Projector distance adjusts module, is used for according to the projector distance adjusting parameter in the adjustment information, to the projection
Distance and position is adjusted, and the projector distance position after adjustment is overlapped with described with reference to projected position；
Center adjusts module, is used for according to the center adjusting parameter in the adjustment information, to the camera lens
Center is adjusted, and the optical center position after adjustment is overlapped with the reference center position；
Height and position adjusts module, is used for according to the height and position adjusting parameter in the adjustment information, to the camera lens
Height and position is adjusted, and the camera lens height and position after adjustment is overlapped with the reference altitude position.
The embodiment of the present invention includes following advantages：
The embodiment of the present invention can judge according to camera lens coordinate data lens location whether with preset camera lens reference position
There are deviations, and in lens location and preset camera lens reference position there are when deviation, can be according to adjustment information by the camera lens
Position adjusts to preset camera lens reference position and overlaps so that the projected image that the camera lens of device for projecting projects and the projection
The projection screen of equipment is aligned, and departing from the position relationship between human eye subjective judgement projected image and projection screen, realizes projection
Automatic calibration between image and projection screen, while avoiding and manually adjusting the lens location of projection device and bring lens location tune
Whole randomness and contingency, improves the accuracy of lens location adjustment, and improves the calibration efficiency of projected image.
Description of the drawings
Fig. 1 is a kind of structure diagram of the calibrating installation embodiment of projection device of the present invention；
Fig. 2 is a kind of step flow chart of the calibration method embodiment of projection device of the present invention；
Fig. 3 A are the schematic diagrames that three-dimensional system of coordinate is established in an example of the present invention；
Fig. 3 B are a kind of scheme of installation of the calibrating installation of projection device of an example of the present invention；
Fig. 3 C are the schematic diagrames that a kind of projection device in an example of the present invention corresponds to preset camera lens reference position；
Fig. 4 is the signal that the lens location of the projection device in an example of the present invention deviates preset camera lens reference position
Figure；
Fig. 5 is the step flow chart of the calibration method of the projection device in an example of the present invention.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
The embodiment of the present invention provides a kind of calibration method and device of projection device, to realize that projected image is set with the projection
Automatic calibration between standby projection screen improves calibration efficiency.
Referring to Fig.1, a kind of structure diagram of the calibrating installation embodiment of projection device of the present invention is shown.The projection is set
Standby calibrating installation 100 can specifically include：Locator 110 and calibration module 120.
Wherein, the locator 110 is positioned for the lens location to projection device, obtains camera lens coordinate data,
The camera lens coordinate data is sent to calibration module 120.The calibration module 120 can be used for according to the camera lens coordinate
Data, judge the lens location whether and there are deviations for preset camera lens reference position；If the lens location with it is preset
There are deviations for camera lens reference position, then generate adjustment information；And according to the adjustment information, adjust the lens location extremely
It is overlapped with the camera lens reference position.
For example, in the case where calibration module includes arithmetic unit and controller, arithmetic unit can be collected by locator
Camera lens coordinate data is sent to controller so that controller can determine that projection device is current according to the camera lens coordinate data
Lens location, and may determine that current lens location whether and there are deviations for preset camera lens reference position；If the camera lens
There are deviations for position and preset camera lens reference position, then generate adjustment information, so as to according to the adjustment information, adjustment
The lens location is extremely overlapped with the camera lens reference position.
Certainly, calibration module can also use other modes to generate adjustment information, can such as be generated and be adjusted by arithmetic unit
Information, the embodiment of the present invention are not restricted this.For example, arithmetic unit is after receiving camera lens coordinate data, it can be according to described
Camera lens coordinate data, judge the lens location whether and there are deviations for preset camera lens reference position；If the lens location
And preset camera lens reference position is there are deviation, then output adjustment information, and can the adjustment information be transferred to controller,
The lens location of projection device is adjusted according to the adjustment information received with trigger controller.The controller is receiving
To after adjustment information, it can adjust the lens location according to the adjustment information and extremely overlapped with the camera lens reference position.It can
See, when the lens location of projection device, which is adjusted to preset camera lens reference position, to be repeated, arithmetic unit can stop output adjustment
Information, so that controller stops the adjustment to lens location, to which the lens location is fixed on preset camera lens reference position
On so that the projected image that the camera lens of device for projecting projects is aligned with the projection screen of the device for projecting.
To sum up, the calibration module in the embodiment of the present invention can judge according to camera lens coordinate data lens location whether in advance
If there are deviations for camera lens reference position, can foundation and in lens location and preset camera lens reference position there are when deviation
The lens location is adjusted to preset camera lens reference position and is overlapped by adjustment information so that the camera lens of device for projecting projected
Projected image is aligned with the projection screen of the device for projecting, departing from the position between human eye subjective judgement projected image and projection screen
Relationship realizes the automatic calibration between projected image and projection screen, while avoiding the camera lens position for manually adjusting projection device
The randomness and contingency for bringing lens location to adjust are set, the accuracy of lens location adjustment is improved, and improves perspective view
The calibration efficiency of picture.
With reference to Fig. 2, shows a kind of step flow chart of the calibration method embodiment of projection device of the present invention, specifically may be used
To include the following steps：
Step 201, the lens location of projection device is positioned by locator, obtains camera lens coordinate data, by institute
It states camera lens coordinate data and is sent to calibration module.
In the concrete realization, a locator can be installed on the console of camera lens for placing projection device, to pass through
The locator positions the lens location of the projection device, that is, the camera lens for being directed to projection device carries out data acquisition, obtains
Camera lens coordinate data.Then, locator can be sent the camera lens coordinate data based on the communication connection between calibration module
To calibration module so that calibration module can determine the lens location of Current projection equipment according to the camera lens coordinate data.Wherein,
Camera lens coordinate data is determined for the lens location of projection device.
Step 202, the calibration module is according to the camera lens coordinate data, judge the lens location whether with it is preset
There are deviations for camera lens reference position.
In the embodiment of the present invention, after camera lens coordinate data of the calibration module transmitted by the locator received, it can adopt
The current lens location of projection device is determined with the camera lens coordinate data, and can be by the camera lens coordinate data and preset mirror
Head reference coordinate data are compared, with judge the lens location whether and there are deviations for preset camera lens reference position.Wherein,
Camera lens reference coordinate data are arranged for preset camera lens reference position.Therefore, preset camera lens reference coordinate data can
For determining the preset camera lens reference position of projection device.
When the lens location of projection device is overlapped with the preset camera lens reference position of the projection device, such as in camera lens coordinate
When data are identical as preset camera lens reference coordinate data, calibration module can determine the throwing that the camera lens of the device for projecting projects
Shadow image is aligned with the projection screen of the device for projecting, i.e., on the projection screen that projected image can project completely.Work as projection device
Lens location and the preset camera lens reference position of the projection device there are when deviation, such as in camera lens coordinate data and preset mirror
When head reference coordinate data differ, calibration module can determine that lens location deviates from camera lens reference position, and can be based on
Deviation between lens location and camera lens reference position generates corresponding adjustment information, such as can be based on camera lens coordinate data and
Difference between camera lens reference coordinate data, determines the deviation between lens location and camera lens reference position, and can then be based on should
Deviation generates corresponding adjustment information.
Step 203, if there are deviations for the lens location and preset camera lens reference position, adjustment information is generated.
Step 204, it according to the adjustment information, adjusts the lens location and is extremely overlapped with the camera lens reference position.
Specifically, calibration module after generating adjustment information, can carry out the lens location according to the adjustment information
Adjustment, lens location is adjusted to camera lens reference position and is overlapped so that the projected image that the camera lens of device for projecting projects
Be aligned with the projection screen of the device for projecting, avoid manually adjust projection device lens location bring lens location adjust with
Machine and contingency, to improve the accuracy of lens location adjustment.
For example, in the case where calibrating installation includes arithmetic unit and controller, arithmetic unit, can be with after generating adjustment information
The adjustment information is exported to controller so that controller can according to the adjustment information to the lens location of projection device into
Row adjustment.Controller, can be according to the adjustment information to projection device after receiving the adjustment information transmitted by arithmetic unit
Lens location is adjusted, and is adjusted to preset camera lens reference position until by the lens location of the projection device, that is, after adjusting
Lens location overlapped with preset camera lens reference position so that projected image that the camera lens of device for projecting projects and the projection
The projection screen of equipment is aligned, and realizes the automatic calibration between projected image and projection screen, improves the calibration effect of projected image
Rate.
In the concrete realization, projection device may include laser projection and projection screen.Wherein, projection screen may be mounted at
It needs on the fixed position projected, and laser projection may be mounted on console.It, can in the calibration process of projected image
To adjust the position of laser projection by the console, to adjust the lens location of the laser projection so that the laser is thrown
The projected image that shadow machine projects can project on fixed projection screen position, such as by projected to the throwing being fixedly mounted
On shadow curtain.Optionally, the embodiment of the present invention can also lead to locator and be positioned to the fixation projected position of projection device, with true
Determine projection device and corresponds to preset camera lens reference position.
In an alternate embodiment of the present invention where, the lens location for judging the projection device whether with it is preset
Before camera lens reference position is there are deviation, further include：The fixation projected position of the projection device is determined by locator
Position, obtains screen coordinate data, the screen coordinate data is sent to calibration module；The calibration module is based on the screen
Coordinate data determines the dimension information and location information of projection screen；It is transported according to the dimension information and the location information
It calculates, determines that the projection device corresponds to preset camera lens reference position.
Specifically, behind the position of fixed projection screen, a three-dimensional coordinate can be established based on the position of the projection screen
System, so that locator can determine the lens location of projection device and/or fixed projected position based on the three-dimensional system of coordinate
Position.For example, in the case where projection device is a laser television, it can be in the position for needing laser television to project, installation is solid
The projection screen of the fixed laser television, then can using projection screen by the midline position at the back side of wall and the intersection point on ground as origin,
Establish three-dimensional XYZ coordinate system.As shown in Figure 3A, midline position that can be with projection screen 301 by the wall back side is defined as Z axis, vertically
Can be defined as Y-axis in Z axis and the outwardly extending straight line of intersection along metope and ground, vertical Y Z plane along ground from origin to
The straight line of outer extension can be defined as X-axis.Wherein, the laser projection 302 of laser television parallel can be put in projection screen 301
Front.
It, can be by being mounted on locator on console after establishing the communication connection between laser projection and projection screen
The lens location of the laser projection is positioned, camera lens coordinate data is obtained；And it can be by being fixedly mounted on projection
Locator on curtain carries out positioning to the fixation projected position of the laser television, obtains screen coordinate data.Then, calibrating die
Block can determine the dimension information and location information of projection screen based on the screen coordinate data, and can be based on the ruler determined
Very little information and the location information carry out operation, obtain laser projection and correspond to preset camera lens reference position.Wherein, size is believed
Breath is determined for the size of projection screen, such as may include the length of projection screen, width and thickness；Location information can be with
Fixed installation position for determining projection screen such as may include the elevation information for the lowest point that projection screen is fixedly mounted
Deng the embodiment of the present invention is not restricted this.
In an alternate embodiment of the present invention where, locator may include the first locator and the second locator.Wherein,
First locator can be used for positioning the lens location of projection device, obtain camera lens coordinate data, by the mirror
Head coordinate data is sent to calibration module.Second locator can be used for the fixation projected position to the projection device
It is positioned, obtains screen coordinate data, the screen coordinate data are sent to calibration module.The calibration module, may be used also
For being based on the screen coordinate data, the dimension information and location information of projection screen are determined；According to the dimension information and
The location information carries out operation, determines that the projection device corresponds to preset camera lens reference position.
In embodiments of the present invention, optionally, the dimension information may include that screen length, screen width and screen are thick
Degree.The screen length can characterize the length of projection screen, and screen width can characterize the width of projection screen and screen thickness can
To characterize the thickness of projection screen.The calibration module may include：Arithmetic unit and receiver.Wherein, the receiver, Ke Yiyong
In the reception camera lens coordinate data and the screen coordinate data.The arithmetic unit can be used for being based on the screen length,
Determine the reference center position of the camera lens；Using the screen width, the mirror of the location information and the projection device
The corresponding preset projection angle information of head, determines the reference altitude position of the camera lens；It is thick using the screen width, the screen
The camera lens of degree and the projection device corresponds to preset projection than information, determines the reference projector distance position of the camera lens.
In the concrete realization, can four angles of projection screen be named as a points, b points, c points, d points, such as Fig. 3 B institutes respectively
Show, and the length of projection screen can be defined as L, the width of projection screen is defined as H, and can be by the thickness of projection screen
W.On projection screen, a small-sized arithmetic unit and receiver 121 can be installed.It can distinguish on a points and c points of projection screen
Second locator is installed, to be positioned to the projection screen of fixed installation by second locator, i.e., laser television is consolidated
Determine projected position to be positioned, obtain the coordinate data of a points and c points, and can using the coordinate data of a points and c points as
Screen coordinate data are sent to receiver by the second locator.Receiver, can after the coordinate data for receiving a points and c points
It is calculated so that the coordinate data of a points and c points is transferred to arithmetic unit, obtains the coordinate data at four angles of projection screen, you can
To obtain the coordinate data of a points, b points, c points and d points.Wherein, a point coordinate datas can be recorded as (W ,-L/2, H+H1)；b
Point coordinate data can be recorded as (W, L/2, H+H1)；C point coordinate datas can be recorded as (W, L/2, H1)；D point coordinate datas
It can be recorded as (W ,-L/2, H1).It should be noted that the position that H1 can be used for characterizing low side to the ground of projection screen is believed
Breath, can such as characterize the low side of projection screen to the vertical range on ground.Then, arithmetic unit can send out this 4 points of coordinate data
Controller 123 is given, as shown in 3B so that controller 123 can determine projection screen based on this 4 points of coordinate data
Dimension information and location information can such as determine that screen length is L, screen width H, screen thickness W and projection screen
Low side height and position is H1.In turn, controller 123 can be according to screen length L, screen width H, screen thickness W, and projection
The vertical range H1 on the low side of curtain to ground carries out operation, obtains preset camera lens reference position.
In an alternate embodiment of the present invention where, the calibration module is according to the dimension information and the location information
Operation is carried out, determines that the projection device corresponds to preset camera lens reference position, can specifically include：
Sub-step S11 is based on the screen length, determines the reference center position of the camera lens.
In embodiments of the present invention, calibration module can be based on screen length, by the center of projection screen be determined as to
The reference center position of camera lens.For example, in conjunction with above-mentioned example, in the reference center position of camera lens using the three-dimensional seat pre-established
In the case that coordinate data in mark system in Y-axis is marked, the coordinate data of a points and b points in Y-axis may be used and counted
It calculates, it may be determined that the reference center position for going out camera lens is the origin in Y-axis, i.e. Ly=0.Specifically, arithmetic unit can pass through
Communication connection sends each point coordinate data of projection screen to controller, such as can the coordinate data of a points and b points be sent to control
Device processed so that controller may be used the coordinate data of a points and b points in Y-axis and be calculated, and determine the reference center of camera lens
Position is the origin in Y-axis, i.e. Ly=0, etc..
Certainly, calibration module can also use other coordinate datas in Y-axis of projection screen to be calculated, such as can be with
It is calculated using the coordinate data of a points and c points in Y-axis；For another example, the coordinate data of d points and c points in Y-axis may be used
It is calculated, and/or, using the coordinate data of d points and b points in Y-axis calculate etc., determine the reference center of camera lens
Position, present invention implementation are not restricted this.
Sub-step S12 is corresponded to pre- using the camera lens of the screen width, the location information and the projection device
If projection angle information, determine the reference altitude position of the camera lens.
It in the concrete realization, can be according to the optical characteristics of the lens inside the camera lens of projection device, such as the refraction of lens
Angle etc. presets the corresponding projection angle information of projection device.The projection angle information may include the first projection angle information and
Two projection angle informations etc., wherein the first projection angle information may include the angle information of the first projectional angle, the angle of the second projectional angle
Spend information.Specifically, for a complete device for projecting, it is fixed in the position of projection screen, such as Fig. 3 C institutes
Show, the vertical range H1 on low side to the ground of projection screen can be a fixed constant.Calibrating die arithmetic unit in the block or controller
The projection device can be obtained and correspond to preset projection angle information, such as obtain the first projectional angle α angle information tan α and
The angle information tan α and the second projectional angle β of the first projectional angle α then may be used in the angle information tan β of second projectional angle β
Angle information tan β, vertical range H1 and the screen width H of projection screen calculated, formula can such as be calculated as follows
1 is calculated, and the reference altitude position Hz of camera lens is obtained.
Calculation formula 1：
Sub-step S13 is corresponded to default using the camera lens of the screen width, the screen thickness and the projection device
Projection than information, determine the reference projector distance position of the camera lens.
During the present invention is implemented, the reference projector distance position of camera lens can be determined according to screen thickness and projector distance,
As shown in Figure 3 C, can by screen thickness W and projector distance Lx's and value be determined as the reference projector distance position of camera lens.Its
In, projector distance Lx can correspond to preset projection according to the screen width H and projection device of projection screen and is determined than information.
The projection can be arranged than information according to preset projectional angle.
Specifically, the size for the projected image that projection device projects can fix, and the focal length of camera lens can be solid
The projection ratio of definite value, i.e. projection device can also be fixed value.Wherein, projection than can be projector distance with picture width it
Than as shown in Figure 3 C, the projection ratio of laser television can be the ratio Lx/H of projector distance Lx and screen width H.It therefore, can be with
It sets projection to 1/ (tan α-tan β) than information.Calibrating die arithmetic unit in the block or controller may be used projection and compare information
1/ (tan α-tan β) and screen width H are calculated, and formula 2 can such as be calculated as follows and calculated, the throwing of camera lens is obtained
Shadow distance Lx.
Calculation formula 2：
It is thus possible to based on the projector distance Lx being calculated and screen thickness W, the reference projector distance of camera lens is determined
Position can will be such as set as with reference to the corresponding coordinate data in projector distance position
Then, reference center position that can be based on the camera lens determined, reference altitude position and projector distance is referred to
Position determines that projection device corresponds to preset camera lens reference position, such as can be by the three-dimensional coordinate data of camera lens reference position
It is recorded as e
In an alternate embodiment of the present invention where, the lens location may include projector distance position, camera lens height
Position and optical center position.It is inclined that the calibration module judges whether the lens location exists with preset camera lens reference position
Difference can specifically include：When the reference projected position is deviateed in the projector distance position, the lens location and institute are judged
Stating camera lens reference position, there are deviations；When the reference center position is deviateed in the optical center position, the camera lens is judged
There are deviations for position and the camera lens reference position；When the camera lens height and position deviates the reference altitude position, judgement
There are deviations for the lens location and the camera lens reference position.
In the concrete realization, the camera lens that can be directed to projection device installs the second locator, to pass through second locator
The lens location of projection device is positioned, such as optical center position is positioned, obtains camera lens coordinate data.It is optional
It ground can be on console to avoid locator according to the influence for the drop shadow effect for causing projection device in optical center position
According to the first locator, such as optical center position e ' can be put the e1 points being mapped on console, with the e1 on console
The first locator is installed on point, e ' points in optical center position are positioned, the coordinate data of current lens center is obtained,
Then reception can be sent to by the first locator using the coordinate data of current lens center as camera lens coordinate data
Device.Receiver, can be by the number of coordinates of current lens center after the coordinate data for receiving current lens center
Judged according to arithmetic unit is transferred to, to determine whether current lens center exists partially with preset camera lens reference position
Difference uses the coordinate data of current lens center to judge the lens location of projection device and preset camera lens reference position
There are deviations.
Wherein, the coordinate data of current lens center can be recorded as e ' (W+Lx ', Ly ', Hz ').It needs to illustrate
It is that Lx ' can characterize the current projector distance position of camera lens, such as can is the vertical range of current lens position and projection screen,
Ly ' can characterize current optical center position, such as can be Y-axis of the current lens position in the three-dimensional system of coordinate pre-established
On mapping component, Hz ' can characterize current camera lens height and position, such as can be current lens position it is vertical with ground away from
From.
In embodiments of the present invention, optionally, the calibration module can also include：Controller.The controller, can be with
For when the reference projected position is deviateed in the projector distance position, judging the lens location and the camera lens reference bit
Set that there are deviations；When the reference center position is deviateed in the optical center position, the lens location and the mirror are judged
There are deviations for head reference position；When the camera lens height and position deviates the reference altitude position, the lens location is judged
And there are deviations for the camera lens reference position.
In the concrete realization, the lens location of projection device can be adjusted, with by changing lens location come real
The calibration of existing projected image.Therefore, the coordinate data of the lens location of projection device can change.The present invention can be in implementing
The three-dimensional coordinate data of the corresponding camera lens reference position of projection device is written in the software program of controller so that controller
It can be by the software program, by the number of coordinates of the three-dimensional coordinate data of the camera lens reference position and the lens location of projection device
According to being compared, so that whether the lens location that real-time judge goes out projection device deviates preset camera lens reference position, realizes and throw
The automatic calibration function of shadow image and projection screen.
Specifically, when projector distance position deviate it is described with reference to projected position when, controller can be by by current mirror
The first coordinate data W+Lx ' and the three of camera lens reference position in the coordinate data e ' (W+Lx ', Ly ', Hz ') of head center
Dimension coordinate data eIn the first coordinate dataIt carries out
Compare, determine current projector distance position deviate it is preset refer to projected position, i.e., W+Lx ' withNot phase
Deng, it is possible to determine that there are deviations for lens location and preset camera lens reference position, and can be based on the projector distance position with
Corresponding projector distance adjusting parameter is generated with reference to the offset between projected position, can such as be incited somebody to actionWith W+
Difference between Lx ' is determined as projector distance adjusting parameter.
Similarly, when the reference center position is deviateed in optical center position, controller can be by will be in current lens
The three-dimensional coordinate of the second coordinate data Ly ' and camera lens reference position in the coordinate data e ' (W+Lx ', Ly ', Hz ') of heart position
Data eIn the second coordinate data 0 be compared, determine current optical center
Preset reference center position is deviateed in position, i.e., when Ly ' is not equal to 0, it is possible to determine that the lens location is joined with preset camera lens
Examining position, there are deviations, and can based on the bias generation between the optical center position and reference center position it is corresponding in
Difference between Ly ' and 0 can be such as determined as center adjusting parameter by heart position adjusting parameter；And when camera lens height position
It sets when deviateing the reference altitude position, it can be by by the coordinate data e ' of current lens center (W+Lx ', Ly ', Hz ')
In third coordinate data Hz ' and camera lens reference position three-dimensional coordinate data e
In third coordinate dataIt is compared, determines that current camera lens height and position deviates preset reference altitude
When position, i.e., it is not equal in Hz 'When, it is possible to determine that the lens location is deposited with preset camera lens reference position
In deviation, and can be based on the corresponding height and position of bias generation between the optical center position and reference center position
Adjusting parameter, such as can by Hz ' withBetween difference be determined as height and position adjusting parameter.
It then, can be based on the adjusting parameter determined, such as projector distance adjusting parameter, center adjusting parameter, height
Position adjusting parameter etc. is spent, corresponding adjustment information is generated, lens location is carried out according to the adjusting parameter in the adjustment information
Adjustment.Adjusting parameter in the adjustment information may include：Projector distance adjusting parameter, center adjusting parameter and/or height
Position adjusting parameter etc. is spent, the embodiment of the present invention is not restricted this.Wherein, projector distance adjusting parameter can be used for controlling and put
The console for setting the camera lens of projection device is moved forward and backward, the camera lens corresponding projector distance position to change projection device；Highly
Position adjusting parameter can be used for controlling console and move up and down, the corresponding camera lens height position of the camera lens to change projection device
It sets；Center adjusting parameter can be used for controlling console and move left and right, the corresponding camera lens of the camera lens to change projection device
Center.
In an alternate embodiment of the present invention where, according to the adjustment information, adjust the lens location to the mirror
Head reference position overlaps, and may include：According to the projector distance adjusting parameter in the adjustment information, to the projector distance position
It sets and is adjusted, the projector distance position after adjustment is overlapped with described with reference to projected position；According in the adjustment information
Center adjusting parameter, the optical center position is adjusted, the optical center position after adjustment with it is described
Reference center position overlaps；According to the height and position adjusting parameter in the adjustment information, the camera lens height and position is carried out
Adjustment, the camera lens height and position after adjustment are overlapped with the reference altitude position.
As the example of the present invention, a controller can be installed on the console for placing laser television, to
The lens location of laser television is adjusted to be calibrated with projection screen.Wherein, laser television can be fixed on console.It was calibrating
Cheng Zhong can change the spatial position front and back up and down of laser television indirectly, make its perspective view by the movement of console
As can accurately project on projection screen.
Specifically, the position in projection screen is fixed, laser television can be put on console.Swash starting
After photoelectricity regards, there may be deviation, laser television at this time is launched for the position of projected image and projection screen that laser television projects
Four points of projected image be respectively a ', b ', c ', d '.When the lens location e ' points of projection device deviate from the projection device
When corresponding preset camera lens reference position e points, as shown in figure 4, to projected image to be aligned with projection screen, then it can pass through control
Device processed control console movement, to control laser television movement so that four point a ' b ' c ' d ' of projected image respectively with projection
Four angle point abcd of curtain are overlapped, as shown in figure 5, specifically comprising the following steps：
Step 501, a, the position coordinate data of c, e point can be returned to receiver by locator.
For example, the position coordinate data of a points and c points can be sent to reception by the first locator on projection screen
Device so that receiver can receive the position coordinate data of a points and c points；The second locator on console can be with
Give the position coordinate data of e points to receiver so that receiver can receive the position coordinate data of e points
Step 502, the position coordinate data received is conveyed to arithmetic unit and calculated by receiver, obtains each point coordinates
Value.
Step 503, each point coordinate value is conveyed to controller by arithmetic unit.
In the concrete realization, arithmetic unit sends calculated each point coordinate value to controller by communicating to connect, and such as may be used
It is transferred to controller with this 4 points coordinate data by calculated a, b, c, d.Wherein, arithmetic unit and controller may be used logical
It is communicatively coupled with universal serial bus (Universal Serial Bus, USB).The USB data line can be used for arithmetic unit and
Communication between controller.
Step 504, controller starts software program, to control console movement by software program, changes laser television
Position.
Specifically, controller can calculate the reference lens position of laser television according to this 4 points coordinate value of a, b, c, d
The location information of e points is set, such as the center of projection screen can be determined as reference center position.If laser television is current
Lens location e ' points deviate reference lens position e points, then controller can control console movement by software program, to change
The lens location of laser television so that lens location e ' points are overlapped with reference lens position e points, so that laser television projects
The projected image gone out can be overlapped with projection screen, realize the automatic calibration function of projected image and projection screen.
As it can be seen that the automatic calibration between projected image and projection screen may be implemented in the embodiment of the present invention, such as may be implemented to swash
Automatic calibration between photoelectricity visible image and projection screen, the judgement departing from human eye subjectivity position adjust, and can be according to fixed
The camera lens coordinate data that position device is sent judges that the lens location of projection device whether there is offset with preset reference lens position,
Judge accurately, so as to improve calibration rate, and user experience can be improved.
In an alternate embodiment of the present invention where, the controller may include following module：
Projector distance adjusts module, is used for according to the projector distance adjusting parameter in the adjustment information, to the projection
Distance and position is adjusted, and the projector distance position after adjustment is overlapped with described with reference to projected position；
Center adjusts module, is used for according to the center adjusting parameter in the adjustment information, to the camera lens
Center is adjusted, and the optical center position after adjustment is overlapped with the reference center position；
Height and position adjusts module, is used for according to the height and position adjusting parameter in the adjustment information, to the camera lens
Height and position is adjusted, and the camera lens height and position after adjustment is overlapped with the reference altitude position.
It should be noted that for embodiment of the method, for simple description, therefore it is all expressed as a series of action group
It closes, but those skilled in the art should understand that, the embodiment of the present invention is not limited by the described action sequence, because according to
According to the embodiment of the present invention, certain steps can be performed in other orders or simultaneously.Secondly, those skilled in the art also should
Know, embodiment described in this description belongs to preferred embodiment, and the involved action not necessarily present invention is implemented
Necessary to example.
For device embodiments, since it is basically similar to the method embodiment, so fairly simple, the correlation of description
Place illustrates referring to the part of embodiment of the method.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiment, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can be provided as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be with reference to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in flow and/or box combination.These can be provided
Computer program instructions are set to all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine so that is held by the processor of computer or other programmable data processing terminal equipments
Capable instruction generates for realizing in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes
The device of specified function.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing terminal equipments
In computer-readable memory operate in a specific manner so that instruction stored in the computer readable memory generates packet
The manufacture of command device is included, which realizes in one flow of flow chart or multiple flows and/or one side of block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing terminal equipments so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one flow of flow chart or multiple flows
And/or in one box of block diagram or multiple boxes specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also include other elements that are not explicitly listed, or further include for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device including the element.
Calibration method to a kind of projection device provided by the present invention and a kind of calibrating installation of projection device above, into
It has gone and has been discussed in detail, principle and implementation of the present invention are described for specific case used herein, the above implementation
The explanation of example is merely used to help understand the method and its core concept of the present invention；Meanwhile for the general technology people of this field
Member, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this explanation
Book content should not be construed as limiting the invention.
Claims (10)
1. a kind of calibration method of projection device, which is characterized in that including：
The lens location of projection device is positioned by locator, obtains camera lens coordinate data, by the camera lens number of coordinates
According to being sent to calibration module；
The calibration module according to the camera lens coordinate data, judge the lens location whether with preset camera lens reference position
There are deviations；If there are deviations for the lens location and preset camera lens reference position, adjustment information is generated；And according to institute
Adjustment information is stated, the lens location is adjusted and is extremely overlapped with the camera lens reference position.
2. according to the method described in claim 1, it is characterized in that, the lens location for judging the projection device whether with
Before preset camera lens reference position is there are deviation, further include：
The fixation projected position of the projection device is positioned by locator, screen coordinate data are obtained, by the screen
Curtain coordinate data is sent to calibration module；
The calibration module is based on the screen coordinate data, determines the dimension information and location information of projection screen；According to described in
Dimension information and the location information carry out operation, determine that the projection device corresponds to preset camera lens reference position.
3. according to the method described in claim 2, it is characterized in that, the dimension information include screen length, screen width and
Screen thickness, the calibration module carry out operation according to the dimension information and the location information, determine the projection device
Corresponding preset camera lens reference position, including：
Based on the screen length, the reference center position of the camera lens is determined；
Preset projection angle information is corresponded to using the camera lens of the screen width, the location information and the projection device,
Determine the reference altitude position of the camera lens；
Preset projection is corresponded to than information using the camera lens of the screen width, the screen thickness and the projection device,
Determine the reference projector distance position of the camera lens.
4. according to the method described in claim 3, it is characterized in that, the lens location includes projector distance position, camera lens height
Position and optical center position are spent, the calibration module judges whether the lens location exists with preset camera lens reference position
Deviation, including：
When the reference projected position is deviateed in the projector distance position, the lens location and the camera lens reference bit are judged
Set that there are deviations；
When the reference center position is deviateed in the optical center position, the lens location and the camera lens reference bit are judged
Set that there are deviations；
When the camera lens height and position deviates the reference altitude position, the lens location and the camera lens reference bit are judged
Set that there are deviations.
5. according to the method described in claim 4, it is characterized in that, according to the adjustment information, the lens location is adjusted extremely
It is overlapped with the camera lens reference position, including：
According to the projector distance adjusting parameter in the adjustment information, the projector distance position is adjusted, until adjustment
Projector distance position afterwards is overlapped with described with reference to projected position；
According to the center adjusting parameter in the adjustment information, the optical center position is adjusted, until adjustment
Optical center position afterwards is overlapped with the reference center position；
According to the height and position adjusting parameter in the adjustment information, the camera lens height and position is adjusted, until adjustment
Camera lens height and position afterwards is overlapped with the reference altitude position.
6. a kind of calibrating installation of projection device, which is characterized in that including：Locator and calibration module；
The locator is positioned for the lens location to projection device, obtains camera lens coordinate data, and the camera lens is sat
Mark data are sent to calibration module；
The calibration module, for according to the camera lens coordinate data, judging whether the lens location joins with preset camera lens
Examining position, there are deviations；If there are deviations for the lens location and the camera lens reference position, adjustment information is generated；And
According to the adjustment information, adjusts the lens location and extremely overlapped with the camera lens reference position.
7. calibrating installation according to claim 6, which is characterized in that it is characterized in that, the locator includes：First is fixed
Position device and the second locator；
First locator, positions for the lens location to projection device, obtains camera lens coordinate data, by the mirror
Head coordinate data is sent to calibration module；
Second locator positions for the fixation projected position to the projection device, obtains screen coordinate data,
The screen coordinate data are sent to calibration module；
The calibration module is additionally operable to be based on the screen coordinate data, determines the dimension information and location information of projection screen；According to
Operation is carried out according to the dimension information and the location information, determines that the projection device corresponds to preset camera lens reference position.
8. calibrating installation according to claim 7, which is characterized in that the dimension information includes that screen length, screen are wide
Degree and screen thickness, the calibration module include：Arithmetic unit and receiver；
The receiver, for receiving the camera lens coordinate data and the screen coordinate data；
The arithmetic unit determines the reference center position of the camera lens for being based on the screen length；It is wide using the screen
The camera lens of degree, the location information and the projection device corresponds to preset projection angle information, determines the reference of the camera lens
Height and position；Preset projection ratio is corresponded to using the camera lens of the screen width, the screen thickness and the projection device
Information determines the reference projector distance position of the camera lens.
9. calibrating installation according to claim 8, which is characterized in that the lens location includes projector distance position, mirror
Grease head highness position and optical center position, the calibration module further include：Controller；
The controller, for when the reference projected position is deviateed in the projector distance position, judging the lens location
And there are deviations for the camera lens reference position；When the reference center position is deviateed in the optical center position, described in judgement
There are deviations for lens location and the camera lens reference position；When the camera lens height and position deviates the reference altitude position,
Judge that there are deviations for the lens location and the camera lens reference position.
10. calibrating installation according to claim 4, which is characterized in that the controller includes：
Projector distance adjusts module, is used for according to the projector distance adjusting parameter in the adjustment information, to the projector distance
Position is adjusted, and the projector distance position after adjustment is overlapped with described with reference to projected position；
Center adjusts module, is used for according to the center adjusting parameter in the adjustment information, to the optical center
Position is adjusted, and the optical center position after adjustment is overlapped with the reference center position；
Height and position adjusts module, is used for according to the height and position adjusting parameter in the adjustment information, to the camera lens height
Position is adjusted, and the camera lens height and position after adjustment is overlapped with the reference altitude position.
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| CN201810447374.6A CN108521566A (en) | 2018-05-11 | 2018-05-11 | A kind of calibration method and device of projected image |
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| CN109743519A (en) * | 2019-02-28 | 2019-05-10 | 四川长虹网络科技有限责任公司 | The laser television and laser television installation position detection method of installation position can be detected |
| CN109873996A (en) * | 2019-02-28 | 2019-06-11 | 四川长虹网络科技有限责任公司 | The laser television and laser television projection size detection method of projection size can be detected |
| CN111064940A (en) * | 2019-12-20 | 2020-04-24 | 青岛海信激光显示股份有限公司 | Laser projection television |
| CN111953950A (en) * | 2020-08-14 | 2020-11-17 | 青岛海信移动通信技术股份有限公司 | Projection equipment and posture adjusting method of projection lens of projection equipment |
| CN112004074A (en) * | 2020-08-13 | 2020-11-27 | 青岛海尔多媒体有限公司 | Method and device for adjusting position of projection equipment and projection equipment |
| CN113315959A (en) * | 2021-06-03 | 2021-08-27 | 青岛海信激光显示股份有限公司 | Laser projection apparatus and projected image correction method |
| CN113766201A (en) * | 2021-09-29 | 2021-12-07 | 深圳市火乐科技发展有限公司 | Projection image rotating device and projection equipment |
| CN113938730A (en) * | 2020-06-29 | 2022-01-14 | 海信视像科技股份有限公司 | Projection assembly correction method of display device and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109743519A (en) * | 2019-02-28 | 2019-05-10 | 四川长虹网络科技有限责任公司 | The laser television and laser television installation position detection method of installation position can be detected |
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| CN113938730A (en) * | 2020-06-29 | 2022-01-14 | 海信视像科技股份有限公司 | Projection assembly correction method of display device and display device |
| CN112004074A (en) * | 2020-08-13 | 2020-11-27 | 青岛海尔多媒体有限公司 | Method and device for adjusting position of projection equipment and projection equipment |
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| CN113315959B (en) * | 2021-06-03 | 2022-11-25 | 青岛海信激光显示股份有限公司 | Laser projection apparatus and projected image correction method |
| CN113766201A (en) * | 2021-09-29 | 2021-12-07 | 深圳市火乐科技发展有限公司 | Projection image rotating device and projection equipment |
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Application publication date: 20180911 |