CN109737997A - A kind of virtual reality wears the rotation delay measuring method of display equipment - Google Patents
A kind of virtual reality wears the rotation delay measuring method of display equipment Download PDFInfo
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Abstract
A kind of virtual reality provided by the invention wears the rotation delay measuring method of display equipment, wears display equipment rotation using turntable drive, wears setting below display equipment, secret note pattern is arranged to the fan-shaped region layout separated on pumped FIR laser disk；Display equipment moving is worn to perceive the black and white strip on pumped FIR laser plate according to the photosensitive sensor of peripheral hardware in the process and resolve the self-position of black and white strip switch instant；Display equipment is worn when moving again, inputs corresponding black white image to wearing display equipment at the time of black and white strip conversion, and with another photosensitive sensor perception black white image；The square-wave curve exported when perceiving black white image according to two photosensitive sensors can be obtained the delay time for wearing display equipment；This method to wear black and white pattern in display equipment and pumped FIR laser pattern is able to carry out virtual combat, there is no manual alignment waveform bring error in earlier processes, so that the expectation of data is closer to true delay time.
Description
Technical field
The invention belongs to virtual reality device technical fields, and in particular to a kind of virtual reality wears the rotation of display equipment
Delay measuring method.
Background technique
The usage experience of the delay time and user of wearing display equipment (HMD) are closely bound up, can if the time is slightly larger
It can cause user and generate " motion sickness " symptom.Document " Luca M D.New Method toMeasure End-to-End
Delay of Virtual Reality [M] .MIT Press, 2010. " propose the easy scheme of a delay measurements, such as scheme
It is each on HMD shell and form to fix a photosensitive sensor shown in 1 (a), an ash is all shown in display screen and HMD
The test chart of gradual change is spent, the photosensitive sensor on shell is then close to display screen, HMD is enabled to be close to display screen and is become along gray scale
Change direction to move back and forth, records the waveform (Fig. 1 (b)) of two sensors return.By calculating the phase between two waveforms
Difference obtains the delay time of the HMD.The defect of this method is to need manual movement, and shake in moving process etc. can be to back
Signal processing introduce many noises；It is solved in Virtual Space in pattern and display screen using the method for manual alignment frequency-domain waveform
The error of the asynchronous introducing of pattern judges, the small time this for delay time that this method is sometimes not only by naked eyes
Error cannot be eliminated, new error can be introduced instead；The test method has HMD for the helmet, needs it can be in so many masking
In the case where calculate itself position data, this is disagreeableness to the tracking scheme of many HMD；Obtained data have larger
Variance, unstability determine its can not be used to production measuring instrument.
Summary of the invention
In view of this, the object of the present invention is to provide the rotation delay measurements sides that a kind of virtual reality wears display equipment
Method can accurately measure the rotation delay of the VR helmet by simple equipment.
A kind of virtual reality wears the rotation delay measuring method of display equipment, and the measuring device used includes first photosensitive
Sensor (1) wears display equipment (2), objective table (3), turntable (4), controller (5), pumped FIR laser disk (6) and second photosensitive
Sensor (7)；It is divided into equally spaced fan-shaped region on pumped FIR laser disk (6), fan-shaped region is filled by black or white, and adjacent two
The color in a region is different；Objective table (3) be fixed on turntable (4) stretching central rotating shaft on, the first photosensitive sensor (1) and consolidate
It is scheduled on objective table (3), turntable (4) is controlled by controller (5) and rotated, and wearing display equipment (2) can be in the drive of objective table (3)
It is lower to be rotated coaxially with turntable (4)；Pumped FIR laser disk (6) is placed under objective table (3), and has bracket support；First light sensor
Device (1) it is photosensitive upside down, the black-white colors on pumped FIR laser disk (6) can be perceived；Second photosensitive sensor (7) be fixed on wear it is aobvious
On the display window for showing equipment (2), for perceiving the color for wearing display equipment (2) display；
Specific step is as follows for the rotation delay measuring method:
Step 1, first control turntable (4) is enclosed from initial position uniform motion one, is worn in display equipment (2) and is not inputted figure
Picture, but the moment calculates the rotational angle of itself；
Step 2, in objective table (3) rotation process, in the first photosensitive sensor (1) thereon perception pumped FIR laser disk (6)
Black, white colour, at the time of perceiving black region and being transformed into white area and white region be transformed into black region when
It carves, wears the own rotation angle for showing that equipment (2) are calculated in each switch instant, and record；Wherein, turn of record
Dynamic angle includes two kinds, and the rotational angle that black region is transformed into white area moment record is defined as black to white angle, white
The rotational angle that region is transformed into black region moment record is defined as white to black angle；
Step 3 after completing rotation in one week, finally obtains one group and wears the rotational angle data set for showing equipment (2)；
Step 4, then control turntable (4) band dynamic object stage (3) is started turning from initial position again, and rotation process is simultaneously
Record the data that the first photosensitive sensor (1) and the second photosensitive sensor (7) returns；
Step 5 wears display equipment (2) according to rotational angle data set, in conjunction with itself current rotational angle of calculating
Information wears display equipment (2) and shows corresponding black and white screen, it may be assumed that when the rotational angle of calculating is white to black angle, to head
Wear display equipment (2) output black pattern；When the rotational angle of calculating be it is black to white angle when, to wearing, display equipment (2) is defeated
White pattern out；In the process, the black of display equipment (2) camera lens output is worn in perception to the second photosensitive sensor (7) thereon
White image, when perceiving white image, the second photosensitive sensor (7) returns to high level, when perceiving black image, second
Photosensitive sensor (7) returns to low level, thus obtains a square-wave curve, is defined as detection waveform；
Step 6, at the same time, the first photosensitive sensor (1) perceives the black and white area on pumped FIR laser disk (6) in moving process
Domain, when perceiving white area, the first photosensitive sensor (1) returns to high level, when perceiving black region, the first photosensitive biography
Sensor (1) returns to low level, thus obtains a square-wave curve, is defined as reference waveform；
Step 7, calculate detection waveform relative to reference waveform time delay Δ t to get showing equipment (2) to wearing
Time delay.
Further, make to wear and show that equipment (2) rotate a few, obtain more Wave datas, respectively obtain time delay
Δ t, mean value are to wear the accurate time delay amount of display equipment (2).
The invention has the following beneficial effects:
A kind of virtual reality provided by the invention wears the rotation delay measuring method of display equipment, drives head using turntable
Display equipment rotation is worn, setting below display equipment is worn, the fan-shaped region layout separated on pumped FIR laser disk secret note is set
Pattern；Display equipment moving is worn in the process according to the black and white strip on the photosensitive sensor of peripheral hardware perception pumped FIR laser plate and resolving
The self-position of black and white strip switch instant；Display equipment is worn when moving again, to being worn at the time of black and white strip conversion
It shows that equipment inputs corresponding black white image, and perceives black white image with another photosensitive sensor；According to two light sensors
Device perceives the square-wave curve exported when black white image, can be obtained the delay time for wearing display equipment；This method to wear
Black and white pattern and pumped FIR laser pattern in display equipment are able to carry out virtual combat, and there is no manual alignment waveforms in earlier processes
Bring error, so that the expectation of data is closer to true delay time.
Detailed description of the invention
Fig. 1 (a) is the Experimental equipment that the mobile delay of display equipment is worn in existing measurement；
Fig. 1 (b) is the experimental signal figure that the experimental provision based on Fig. 1 (a) obtains；
Fig. 2 is measuring device schematic diagram of the invention；
Fig. 3 is the scheme of installation for wearing display equipment and the second photosensitive sensor in the present invention；
Fig. 4 is the schematic diagram of the pumped FIR laser disk used in the present invention；
The detection waveform and reference waveform figure that Fig. 5 is obtained when being turntable one circle of rotation；
Wherein, the first photosensitive sensor of 1-, 2- wear display equipment, 3- objective table, 4- turntable, 5- turntable controller, 6-
Pumped FIR laser disk, the second photosensitive sensor of 7-.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
A kind of virtual reality of the invention wears the rotation delay measuring method of display equipment, and the measuring device used is as schemed
Shown in 2, including the first photosensitive sensor 1, wear display equipment 2, objective table 3, high-precision turntable 4, turntable controller 5, light
Coding disk 6 and the second photosensitive sensor 7.
As shown in figure 4, being divided into equally spaced fan-shaped region on pumped FIR laser disk 6, fan-shaped region is filled by black or white,
The color in two neighboring region is different.
Objective table 3 is fixed on the central rotating shaft of the stretching of turntable 4, the first photosensitive sensor 1 and is fixed on objective table 3,
Turntable 4 is controlled by controller 5 and is rotated, and wearing display equipment 2 can rotate coaxially under the drive of objective table 3 with turntable 4；Pumped FIR laser
Disk 6 is placed under objective table 3, and has bracket support.First photosensitive sensor 1 it is photosensitive upside down, pumped FIR laser plate can be perceived
Black-white colors on pumped FIR laser disk 6.Second photosensitive sensor 7 as shown in Figure 3 is fixed on the display window for wearing display equipment 2
On, for perceiving the color wearing display equipment 2 and showing.
Specific step is as follows for rotation delay measuring method of the invention:
1, first control turntable 4 is enclosed from initial position uniform motion one, wears not input picture in display equipment 2 at this time, but
It is the rotational angle for calculating itself constantly；
2, in 3 rotation process of objective table, black, the white colour on 1 perceptual coding plate 6 of the first photosensitive sensor thereon,
At the time of perceiving black region and being transformed into white area and at the time of white region is transformed into black region, display is worn
Equipment 2 calculates the own rotation angle in each switch instant, and records；Wherein, rotational angle includes two kinds, black
The rotational angle that region is transformed into white area moment record be defined as it is black to white angle, when white area is transformed into black region
The rotational angle for engraving record is defined as white to black angle.
3, after completing rotation in one week, one group of rotational angle data set for wearing display equipment 2 is finally obtained；
4, then control turntable 4 is started turning from initial position again with dynamic object stage 3, and rotation process records first simultaneously
The data that photosensitive sensor 1 and the second photosensitive sensor 7 return；
5, display equipment 2 is worn according to rotational angle data set, in conjunction with itself current rotational angle information of calculating, head
It wears display equipment 2 and shows corresponding black and white screen, it may be assumed that when the rotational angle of calculating is white to black angle, set to display is worn
Standby 2 output black patterns；When the rotational angle of calculating be it is black to white angle when, export white pattern to display equipment 2 is worn；Its
On the second photosensitive sensor 7 in the process, perception wear display 2 camera lens of equipment output black white image, it is white when perceiving
Chromatic graph as when, the second photosensitive sensor 7 return high level, when perceiving black image, the second photosensitive sensor 7 returns to low electricity
It is flat, a square-wave curve is thus obtained, is defined as detection waveform, as shown in Figure 5；
6, at the same time, the first photosensitive sensor 1 perceives the black and white region on pumped FIR laser disk 6 in moving process, perception
When to white area, the first photosensitive sensor 1 returns to high level, and when perceiving black region, the first photosensitive sensor 1 is returned
Thus low level obtains a square-wave curve, is defined as reference waveform, as shown in Figure 5；
7, data processing: the perception having time delay due to wearing display equipment 2, when objective table 3 turns to certain position,
The position cannot be perceived at once by wearing display equipment 2, have a time delay, therefore, as shown in figure 5, detection waveform is opposite
A time delay Δ t is just had in reference waveform；Therefore, time delay Δ t is calculated to have obtained wearing display equipment 2
Mobile delay.It is available more accurate by averaging to detection waveform and time delay Δ t multiple on reference waveform
Wear the rotation time delay of display equipment 2.
In order to increase the data volume being repeatedly averaged, more accurate measured value is obtained, should make to wear the display rotation of equipment 2
A few obtain more Wave datas, respectively obtain Δ t, mean value is the delay time T of equipment.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (2)
1. the rotation delay measuring method that a kind of virtual reality wears display equipment, which is characterized in that the measuring device packet used
Include the first photosensitive sensor (1), wear display equipment (2), objective table (3), turntable (4), controller (5), pumped FIR laser disk (6) with
And second photosensitive sensor (7)；It is divided into equally spaced fan-shaped region on pumped FIR laser disk (6), fan-shaped region is by black or white
The color of filling, two neighboring region is different；Objective table (3) is fixed on the central rotating shaft of turntable (4) stretching, the first photosensitive biography
It sensor (1) and is fixed on objective table (3), turntable (4) is controlled by controller (5) and rotated, and wearing display equipment (2) can be in loading
It is rotated coaxially under the drive of platform (3) with turntable (4)；Pumped FIR laser disk (6) is placed under objective table (3), and has bracket support；The
One photosensitive sensor (1) it is photosensitive upside down, the black-white colors on pumped FIR laser disk (6) can be perceived；Second photosensitive sensor (7) is solid
It is scheduled on the display window for wearing display equipment (2), for perceiving the color for wearing display equipment (2) display；
Specific step is as follows for the rotation delay measuring method:
Step 1, first control turntable (4) is enclosed from initial position uniform motion one, wears not input picture in display equipment (2), but
It is the rotational angle for calculating itself constantly；
Step 2, in objective table (3) rotation process, in the first photosensitive sensor (1) thereon perception pumped FIR laser disk (6) it is black,
White colour, at the time of perceiving black region and being transformed into white area and at the time of white region is transformed into black region, head
The own rotation angle for showing that equipment (2) are calculated in each switch instant is worn, and is recorded；Wherein, the angle of rotation of record
Degree includes two kinds, and the rotational angle that black region is transformed into white area moment record is defined as black to white angle, white area
The rotational angle for being transformed into black region moment record is defined as white to black angle；
Step 3 after completing rotation in one week, finally obtains one group and wears the rotational angle data set for showing equipment (2)；
Step 4, then control turntable (4) band dynamic object stage (3) is started turning from initial position again, and rotation process records simultaneously
The data that first photosensitive sensor (1) and the second photosensitive sensor (7) return；
Step 5 wears display equipment (2) according to rotational angle data set, in conjunction with itself current rotational angle information of calculating,
It wears display equipment (2) and shows corresponding black and white screen, it may be assumed that is aobvious to wearing when the rotational angle of calculating is white to black angle
Show equipment (2) output black pattern；When the rotational angle of calculating be it is black to white angle when, to wearing, display equipment (2) output is white
Colored pattern；In the process, the artwork master of display equipment (2) camera lens output is worn in perception to the second photosensitive sensor (7) thereon
Picture, when perceiving white image, the second photosensitive sensor (7) returns to high level, and when perceiving black image, second is photosensitive
Sensor (7) returns to low level, thus obtains a square-wave curve, is defined as detection waveform；
Step 6, at the same time, the first photosensitive sensor (1) perceives the black and white region on pumped FIR laser disk (6) in moving process,
When perceiving white area, the first photosensitive sensor (1) returns to high level, when perceiving black region, the first light sensor
Device (1) returns to low level, thus obtains a square-wave curve, is defined as reference waveform；
Step 7, calculate detection waveform relative to reference waveform time delay Δ t to get to wear show equipment (2) time
Delay.
2. the rotation delay measuring method that a kind of virtual reality as described in claim 1 wears display equipment, which is characterized in that
Make to wear and show that equipment (2) rotate a few, obtain more Wave datas, respectively obtain time delay Δ t, mean value is to wear
Show the accurate time delay amount of equipment (2).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023129008A1 (en) * | 2021-12-27 | 2023-07-06 | Asis Elektronik Ve Bilisim Sistemleri Anonim Sirketi | Delay measurement system of systems with camera in lwir band |
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