CN110207952A - It is a kind of for nearly mesh formula device display screen detection to Barebone and alignment methods - Google Patents
It is a kind of for nearly mesh formula device display screen detection to Barebone and alignment methods Download PDFInfo
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- CN110207952A CN110207952A CN201910422235.2A CN201910422235A CN110207952A CN 110207952 A CN110207952 A CN 110207952A CN 201910422235 A CN201910422235 A CN 201910422235A CN 110207952 A CN110207952 A CN 110207952A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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Abstract
The present invention provides a kind of for the detection of nearly mesh formula device display screen to Barebone, and the system comprises mechanical module, image capture module and control modules；The mechanical module includes guide rail, drive module and three holders, is respectively used to fix display screen, image capture module and test equipment to be tested.The present invention also proposes a kind of alignment methods for the detection of nearly mesh formula device display screen, second holder drives image capture module to be first aligned with test equipment, then 180 ° are rotated horizontally, enable the visual angle of described image acquisition module towards display screen direction to be tested, the height and angle for adjusting first holder again are aligned display screen to be tested fixed on the first holder with image capture module.The display screen that the present invention can be realized measuring instrument and nearly mesh formula equipment precisely aligns, and ensure that the validity of measurement data, and solving the problems, such as that nearly mesh formula device display area is less than normal causes test equipment test point difficulty to be aligned.
Description
Technical field
The present invention relates to automation field, visual pattern process field and field of optical measurements, and it is aobvious to be also related to nearly mesh formula
Show the technical field of device objective photoelectric properties test, it is especially a kind of for the detection of nearly mesh formula device display screen to Barebone and
Alignment methods.
Background technique
During the manufacturing of electron display device, detection is very important a ring, and being aligned is before detecting
It mentions, can guarantee that electron display device provides optimal image displaying quality in this way.
With being constantly progressive for virtual reality technology and augmented reality, application scenarios are also more and more, correspondingly,
Nearly mesh formula device product increasingly emerges in large numbers, they are to wear class product mostly.But it is used for the survey of all kinds of nearly objective performances of mesh formula equipment
Examination and alignment methods are not yet mature.The nearly mesh formula equipment performance testing scheme for being currently available for reference is made a general survey of, finds these tests
There are some common problems for scheme, wherein more apparent one kind be test macro the degree of automation it is lower.For nearly mesh formula
Device display area is less than normal to cause measuring instrument to be difficult to the problem of being directed at display area, and most test macros are all made of manual calibration
Mode, generally require large area adjustment instrument, there are artificial subjective errors, it is difficult to improve measurement accuracy, not can guarantee test
As a result objectivity and stability.On the other hand, the nearly mesh formula display purposes and usage scenario different from traditional display screen curtain
Determine that the display area of this class display is less than normal, this causes the best test point of test equipment to be more difficult to be directed at display area.
Summary of the invention
The technical problems to be solved by the present invention are:
It is less than normal in order to solve nearly mesh formula display display area, cause the best test point of test equipment to be difficult to be directed at viewing area
The problem of domain, the present invention propose it is a kind of for nearly mesh formula device display screen detection to Barebone and alignment methods.
The present invention uses following technical scheme to solve above-mentioned technical problem:
The present invention proposes a kind of adopting to Barebone, including mechanical module, image for the detection of nearly mesh formula device display screen
Collect module and control module；
The mechanical module includes guide rail, the first holder, the second holder, third holder and drive module, first cloud
Platform is for fixing display screen to be tested, and the second holder is for fixing described image acquisition module, and third holder is for fixed test
Instrument, the test equipment subscript have anchor point for identification；The drive module receives the signal of the control module simultaneously
Described first is output control signals to third holder and guide rail；
The control module receives the image of image capture module acquisition, and it includes object that described image, which is calculated, in processing
Position, angle parameter, and compared with the location information of the control module itself storage, obtain position, the angle of the object
Departure compared with target position, angle exports corresponding control signal to mechanical module；Described in the mechanical module receives
Control signal and spatial position and the deflection angle for adjusting first, second holder, until described image includes the position of object
It sets, departure of the angle compared with target position, angle is less than preset threshold value.
It is foregoing it is a kind of for the detection of nearly mesh formula device display screen to Barebone, further: described image is adopted
Collecting module includes camera and video frequency processing chip；The video frequency processing chip is used for the coding and decoding of video.
It is foregoing it is a kind of for the detection of nearly mesh formula device display screen to Barebone, further: the control mould
Block includes vision processing module and motion-control module, and the vision processing module receives image, exports the display to be tested
The location parameter and angle parameter of screen, the motion-control module receive the location parameter and angle parameter, position are calculated
It sets departure and outputs control signals to mechanical module.
It is foregoing it is a kind of for the detection of nearly mesh formula device display screen to Barebone, further: the alignment is
System further includes display interactive module, and the display interactive module is for showing that the position between the camera and test equipment is inclined
Position deviation amount between residual quantity, the camera and display screen to be tested；The display interactive module is for receiving the institute
State the position deviation amount between position deviation amount, the camera and the display screen to be tested between camera and test equipment
Threshold value.
The present invention also proposes a kind of alignment methods for the detection of nearly mesh formula device display screen:
Step 1: resetting: the first, second, third holder being enabled to restore to initial position；The height of fixed third holder；
Step 2: camera positions: the angle and height of the second holder of adjustment enable camera fixed on the second holder
The visual field is tentatively directed at test equipment；The opposite position of the anchor point demarcated on test equipment and camera is obtained by acquiring image
It sets, the relative position information of the camera and test equipment is calculated；Information adjusts the second cloud depending on that relative position
The height and angle of platform adjust the angle of third holder, until the relative position error of the camera and test equipment is less than
Stop when preset error threshold；
Step 3: display screen to be tested is tentatively aligned: keeping the height of second holder constant, enable the second PTZ level
180 ° of rotation, it is preliminary to be directed at the first holder；Display screen to be tested is fixed on the first holder, the display to be tested is lighted
Screen shows test image；
Step 4: display screen to be tested precisely aligns: fixing the second holder, adjust height and the angle of first holder
Degree, using the camera collection image, obtains real image；
Step 5: the test image of comparison storage and the real image measured, are calculated the display screen to be tested
The departure of physical location and its target position outputs control signals to the mechanical module, adjusts the height of first holder
Degree and angle；
Step 6: being preset until the physical location of the display screen to be tested is less than with the departure of its target position
Threshold value when stop；
Step 7: removing the second holder.
A kind of foregoing alignment methods for the detection of nearly mesh formula device display screen, further: described in step 3
Test image includes multiple test points used for positioning.
A kind of foregoing alignment methods for the detection of nearly mesh formula device display screen, further: described in step 5
The step of physical location and the departure of its target position of the display screen to be tested is calculated include:
5.1, detection obtains target image characteristics point；
5.2, measurement obtains real image characteristic point；
5.3, the character pair of the target image and real image point, obtains deviant；
5.4, calculus of differences, output control signal are carried out to the deviant.
The invention adopts the above technical scheme compared with prior art, has following technical effect that
The present invention propose it is a kind of for nearly mesh formula device display screen detection to Barebone and alignment methods, in conjunction with vision figure
As processing technique and automated control technology can be realized by flexibly using high-accuracy mechanical transmission and visual pattern to handle
The test point of measuring instrument precisely aligns the display area of nearly mesh formula equipment, changes manual calibration and is automatically aligned to for machine, effectively drops
Subjective error in low test process, also further improves the repeatability and stability of test job.
On the other hand, alignment methods of the present invention can effectively solve due to nearly mesh formula display display area is small,
Angular field of view is small to be difficult to the problem of being directed at display area, reduce simultaneously to the best test point of test process bring test equipment
Manual operation bring tests unstability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present invention to Barebone.
Fig. 2 is the flow chart of alignment methods of the present invention.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing:
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Also
It should be understood that those terms such as defined in the general dictionary should be understood that have in the context of the prior art
The consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
Because nearly mesh formula display display area area is small, field angle is small, the best test point of test equipment is caused to be difficult to pair
Quasi- display area, and the best test point of manual-alignment will will lead to that subjective error is bigger than normal, bring the consequence that test data is unstable.
Fig. 1 is the structural schematic diagram of the present invention to Barebone.As shown, of the present invention to Barebone packet
Include guide rail, first to third holder, control module and image capturing system.First holder is used to carry display to be tested
Device, the second holder are used to carry camera, and third holder is used to bearing test instrument, and three holders are sequentially arranged in guide rail
On.
During the test, as shown in Fig. 2, three holders is enabled to reset first, that is, the first, second, third holder is enabled
Restore to initial position, and the height of fixed third holder.It is first not fixed the angle that third PTZ level direction rotates, because the
The test equipment carried on three holders has not determined view directions at this time.
The relative position of the camera and test equipment on the second holder is determined in next step, and target is to enable the visual field of camera
Center line is overlapped with the cause center line of test equipment.The angle and height of the second holder of first successive step enable solid on the second holder
The visual field of fixed camera is tentatively directed at test equipment；Described image acquisition device shoots image by camera, is had
Itself and test equipment is calculated with the locating point position in these images in the image for the anchor point demarcated on test equipment
Relative position.Information adjusts described two holders depending on that relative position, wherein adjusting the height and angle of the second holder, adjusts
The angle of whole third holder, until the relative position error of the camera and test equipment is less than preset error threshold
When stop.
Third step is in alignment with display screen to be tested.Specifically, it keeps the height of second holder constant, enables the second holder
180 ° are rotated horizontally, the camera view on the second holder is tentatively directed at the first holder；Display screen to be tested is fixed on first
On holder, the display screen to be tested is lighted, shows test image, test image includes multiple test points used for positioning.Gu
Fixed second holder, the height and angle for adjusting first holder obtain real image using the camera collection image；
The physical location and its target of the display screen to be tested is calculated in the real image for comparing the test image of storage and measuring
The departure of position.Specifically, the first step, detection obtain target image characteristics point；Second step, measurement obtain real image feature
Point；The character pair point of third step, the target image and the real image, obtains deviant；4th step, to described
Deviant carries out calculus of differences, output control signal.Then the mechanical module is output control signals to, first cloud is adjusted
The height and angle of platform；It is preset until the physical location of the display screen to be tested is less than with the departure of its target position
Threshold value when stop；
Finally remove the second holder.
System and method combination visual processes technology and automated control technology, may be implemented the intelligence of best test point
Alignment result is automated, the objectivity and intelligence of test job are effectively increased, is reduced main brought by manual operation
See error.The final best test point for realizing test equipment is aligned with the display area for being tested nearly mesh formula display, to solve
Determined, field angle small caused test point alignment difficulties small because of nearly mesh formula display display area and manual-alignment test point institute
Bring test result instability problem.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. it is a kind of for nearly mesh formula device display screen detection to Barebone, it is characterised in that: including mechanical module, Image Acquisition
Module and control module；
The mechanical module includes guide rail, the first holder, the second holder, third holder and drive module, and first holder is used
In fixation display screen to be tested, the second holder is used to fix test equipment for fixing described image acquisition module, third holder,
The test equipment subscript has anchor point for identification；The drive module receives the signal of the control module and exports control
Signal processed is to described first to third holder and guide rail；
The control module receives the image of image capture module acquisition, and the position that described image includes object is calculated in processing
Set, angle parameter, and compared with the location information of the control module itself storage, obtain the position of the object, angle with
The departure that target position, angle are compared exports corresponding control signal to mechanical module；The mechanical module receives the control
Signal processed and spatial position and the deflection angle for adjusting first, second holder, until described image include object position,
Departure of the angle compared with target position, angle is less than preset threshold value.
2. it is as described in claim 1 it is a kind of for the detection of nearly mesh formula device display screen to Barebone, it is characterised in that: it is described
Image capture module includes camera and video frequency processing chip；The video frequency processing chip is used for the coding and decoding of video.
3. it is as described in claim 1 it is a kind of for the detection of nearly mesh formula device display screen to Barebone, it is characterised in that: it is described
Control module includes vision processing module and motion-control module, and the vision processing module receives image, is exported described to be measured
The location parameter and angle parameter of display screen are tried, the motion-control module receives the location parameter and angle parameter, calculates
It obtains position deviation amount and outputs control signals to mechanical module.
4. it is as claimed in claim 2 it is a kind of for the detection of nearly mesh formula device display screen to Barebone, it is characterised in that: it is described
It further include display interactive module to Barebone, the display interactive module is for showing between the camera and test equipment
Position deviation amount between position deviation amount, the camera and display screen to be tested；The display interactive module is for receiving
Position between the position deviation amount between camera and test equipment, the camera and display screen to be tested is inclined
The threshold value of residual quantity.
5. a kind of alignment methods for the detection of nearly mesh formula device display screen, it is characterised in that:
Step 1: resetting: the first, second, third holder being enabled to restore to initial position；The height of fixed third holder；
Step 2: camera positions: the angle and height of the second holder of adjustment enable the visual field of camera fixed on the second holder
Preliminary alignment test equipment；The relative position of the anchor point demarcated on test equipment and camera is obtained by acquiring image, is counted
Calculation obtains the relative position information of the camera and test equipment；Information adjusts the height of the second holder depending on that relative position
Degree and angle adjust the angle of third holder, set in advance until the relative position error of the camera and test equipment is less than
Stop when fixed error threshold；
Step 3: display screen to be tested is tentatively aligned: keeping the height of second holder constant, the second PTZ level is enabled to rotate
It is 180 °, preliminary to be directed at the first holder；Display screen to be tested is fixed on the first holder, the display screen to be tested is lighted, is shown
Show test image；
Step 4: display screen to be tested precisely aligns: fixing the second holder, adjust the height and angle of first holder, benefit
With the camera collection image, real image is obtained；
Step 5: the test image of comparison storage and the real image measured, are calculated the reality of the display screen to be tested
The departure of position and its target position, outputs control signals to the mechanical module, adjust first holder height and
Angle；
Step 6: until the physical location of the display screen to be tested and the departure of its target position are less than preset threshold
Stop when value；
Step 7: removing the second holder.
6. a kind of alignment methods for the detection of nearly mesh formula device display screen as claimed in claim 5, it is characterised in that: step
Three test images include multiple test points used for positioning.
7. a kind of alignment methods for the detection of nearly mesh formula device display screen as claimed in claim 6, it is characterised in that: it is special
Sign is: the step of physical location and the departure of its target position of the display screen to be tested are calculated described in step 5
Include:
5.1, detection obtains target image characteristics point；
5.2, measurement obtains real image characteristic point；
5.3, the character pair of the target image and real image point, obtains deviant；
5.4, calculus of differences, output control signal are carried out to the deviant.
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| CN201910422235.2A CN110207952B (en) | 2019-05-21 | 2019-05-21 | Alignment method for near-eye equipment display screen detection |
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| CN201910422235.2A CN110207952B (en) | 2019-05-21 | 2019-05-21 | Alignment method for near-eye equipment display screen detection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111354015A (en) * | 2020-02-26 | 2020-06-30 | 上海市城市建设设计研究总院（集团）有限公司 | Bridge anti-collision laser calibration system and application method thereof |
| CN117912383A (en) * | 2024-03-20 | 2024-04-19 | 四川启睿克科技有限公司 | Method for testing brightness uniformity of flat panel display equipment |
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| CN101707890A (en) * | 2007-04-18 | 2010-05-12 | 实耐宝公司 | The method of utilizing optical alignment system free-standing stationary installation to be positioned with respect to vehicle |
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| CN111354015A (en) * | 2020-02-26 | 2020-06-30 | 上海市城市建设设计研究总院（集团）有限公司 | Bridge anti-collision laser calibration system and application method thereof |
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| CN117912383B (en) * | 2024-03-20 | 2024-05-31 | 四川启睿克科技有限公司 | Method for testing brightness uniformity of flat panel display equipment |
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