CN107607295A - A kind of visual field angle measuring device and method - Google Patents
A kind of visual field angle measuring device and method Download PDFInfo
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- CN107607295A CN107607295A CN201710944148.4A CN201710944148A CN107607295A CN 107607295 A CN107607295 A CN 107607295A CN 201710944148 A CN201710944148 A CN 201710944148A CN 107607295 A CN107607295 A CN 107607295A
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Abstract
The present embodiments relate to technical field of virtual reality, more particularly to a kind of visual field angle measuring device and method, including：The image captured by picture pick-up device is obtained, and according to image, determines the pixel-parameters of image；According to the camera parameter of picture pick-up device and the pixel-parameters of image, the angle of visual field of the helmet to be measured is determined；Wherein, the angle of visual field of picture pick-up device is more than the angle of visual field of the helmet to be measured.It can be seen that, the image captured by picture pick-up device is obtained first, then according to image, determine the pixel-parameters of image, finally according to the camera parameter of picture pick-up device and the pixel-parameters of image, it can determine that the angle of visual field of the helmet to be measured, because the camera parameter of picture pick-up device can be determined in advance, therefore, as long as the image captured by picture pick-up device can be rapidly obtained, the angle of visual field of the helmet to be measured can quickly be calculated, so as to calculate the angle of visual field of the helmet to be measured automatically, and then the measurement efficiency of the angle of visual field can be lifted.
Description
Technical field
The present embodiments relate to technical field of virtual reality, more particularly to a kind of visual field angle measuring device and method.
Background technology
The angle of visual field (Field of View, abbreviation FOV) refers to the visual field size of optical device observation.For virtual reality
(Virtual Reality, abbreviation VR) and augmented reality (Augment Reality, abbreviation AR), the size of the angle of visual field are to determine
User's important indicator of feeling of immersion and the sense of reality in virtual scene.However, by the picture presented in the products such as VR/AR
It is the virtual image, it is difficult to it is directly measured using traditional angle measurement method, therefore, VR/AR can be measured at present
The FOV of equipment method and apparatus is also less at present.
Give a kind of optical measurement FOV's by convex lens and with small hole plate composition in patent CN106124169A
Method, this method utilize the invertibity of light, make it just consistent with visual field maximum magnitude by adjusting external testing light source position,
So as to measure angle of visual field FOV, but this method needs proper calibration to adjust light path, it is necessary to substantial amounts of manual adjustment work is intervened,
Measurement efficiency is relatively low.
The content of the invention
The embodiment of the present invention provides a kind of visual field angle measuring device and method, to lift the measurement efficiency of the angle of visual field.
The embodiment of the present invention provides a kind of visual field angle measuring device, including：Measure support, picture pick-up device；
The picture pick-up device, simulation human eye pupil are positioned on the measurement support, presented for shooting the helmet to be measured
Image；Imaging device is built-in with the helmet to be measured so that wearing the user of the helmet to be measured can be immersed in virtually
In scene；
The measurement support, for placing the picture pick-up device and the helmet to be measured, wherein, the picture pick-up device is placed
In the first position of the measurement support, the first position is eyes position when user wears the helmet to be measured；
The helmet to be measured is positioned over the second place of the measurement support, and the second place is to be according to the helmet to be measured
What the pre-determined distance between existing image and the picture pick-up device determined；
Wherein, the angle of visual field of the picture pick-up device is more than the angle of visual field of the helmet to be measured.
Preferably, also include lighttight casing；
The casing, for loading measurement support, the picture pick-up device and the helmet to be measured.
Preferably, the picture pick-up device is two, position corresponding with right and left eyes on the measurement support is respectively placed in
On.
The embodiment of the present invention is also provided a kind of visual field angle measuring device provided using above-described embodiment and measures the angle of visual field
Method, this method include：
Obtain the image captured by the picture pick-up device, and according to described image, determine the pixel-parameters of described image；
According to the camera parameter of the picture pick-up device and the pixel-parameters of described image, regarding for the helmet to be measured is determined
Rink corner；Wherein, the angle of visual field of the picture pick-up device is more than the angle of visual field of the helmet to be measured.
Preferably, it is described according to the camera parameter of the picture pick-up device and the pixel-parameters of described image, it is determined that described
The angle of visual field of the helmet to be measured, including：
The horizontal field of view angle of the helmet to be measured is determined according to the following equation；
Wherein, x is the number of pixels of described image in the horizontal direction, and λ is the sensitive chip unit of the picture pick-up device
Pixel number in length, f are the focal length of the picture pick-up device.
Preferably, it is described according to the camera parameter of the picture pick-up device and the pixel-parameters of described image, it is determined that described
The angle of visual field of the helmet to be measured, including：
The vertical field of view angle of the helmet to be measured is determined according to the following equation；
Wherein, y is the number of pixels of described image in the vertical direction, and λ is the sensitive chip unit of the picture pick-up device
Pixel number in length, f are the focal length of the picture pick-up device.
Preferably, it is described according to the camera parameter of the picture pick-up device and the pixel-parameters of described image, it is determined that described
The angle of visual field of the helmet to be measured, including：
The diagonal angles of visual field of the helmet to be measured is determined according to the following equation；
Wherein, x is the number of pixels of described image in the horizontal direction, and y is the pixel of described image in the vertical direction
Number, λ are the pixel number in the sensitive chip unit length of the picture pick-up device, and f is the focal length of the picture pick-up device.
Preferably, described image is solid-color image.
Another embodiment of the present invention provides a kind of computing device, and it includes memory and processor, wherein, the storage
Device instructs for storage program, and the processor is used to call the programmed instruction stored in the memory, according to the journey of acquisition
Sequence performs any of the above-described kind of method.
Another embodiment of the present invention provides a kind of computer-readable storage medium, and the computer-readable recording medium storage has
Computer executable instructions, the computer executable instructions are used to make the computer perform any of the above-described kind of method.
The visual field angle measuring device that above-described embodiment provides, including：Measure support, picture pick-up device；The picture pick-up device, mould
Anthropomorphic eye pupil hole is positioned on the measurement support, the image presented for shooting the helmet to be measured；In in the helmet to be measured
Imaging device is equipped with so that wearing the user of the helmet to be measured can be immersed in virtual scene；The measurement support, use
In the placement picture pick-up device and the helmet to be measured, wherein, the picture pick-up device is positioned over first of the measurement support
Put, the first position is eyes position when user wears the helmet to be measured；The helmet to be measured is positioned over described
The second place of support is measured, the second place is the image and the picture pick-up device presented according to the helmet to be measured
Between pre-determined distance determine；Wherein, the angle of visual field of the picture pick-up device is more than the angle of visual field of the helmet to be measured.It can see
Go out, the image that the helmet to be measured be presented can be shot by picture pick-up device in visual field angle measuring device, then according to the image,
The pixel-parameters of the image are determined, finally according to the camera parameter of picture pick-up device and the pixel-parameters of the image, you can it is determined that
The angle of visual field of the helmet to be measured, because the camera parameter of picture pick-up device can be determined in advance, and it can be filled by visual field angular measurement
Picture pick-up device in putting shoots the image that the helmet to be measured is presented, and therefore, the angle of visual field of the helmet to be measured can quickly be calculated,
So as to calculate the angle of visual field of the helmet to be measured automatically, and then the measurement efficiency of the angle of visual field can be lifted.
The method that the visual field angle measuring device provided using above-described embodiment that above-described embodiment provides measures the angle of visual field, bag
Include：Obtain the image captured by the picture pick-up device, and according to described image, determine the pixel-parameters of described image；According to institute
The camera parameter of picture pick-up device and the pixel-parameters of described image are stated, determine the angle of visual field of the helmet to be measured；Wherein, it is described
The angle of visual field of picture pick-up device is more than the angle of visual field of the helmet to be measured.As can be seen that the figure captured by picture pick-up device is obtained first
Picture, then according to described image, the pixel-parameters of described image are determined, finally according to the camera parameter and image of picture pick-up device
Pixel-parameters, you can determine the angle of visual field of the helmet to be measured, because the camera parameter of picture pick-up device can be determined in advance, therefore,
As long as the image captured by picture pick-up device can be rapidly obtained, you can the angle of visual field of the helmet to be measured is quickly calculated,
So as to calculate the angle of visual field of the helmet to be measured automatically, and then the measurement efficiency of the angle of visual field can be lifted.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly introduced.
Fig. 1 is a kind of structural representation of visual field angle measuring device provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation for visual field angle measuring device that another embodiment of the present invention provides；
Fig. 3 is a kind of method flow schematic diagram for measuring the angle of visual field provided in an embodiment of the present invention；
Fig. 4 is showing for the image captured by the picture pick-up device provided in an embodiment of the present invention being placed in lighttight casing
It is intended to；
Fig. 5 is the principle schematic of the angle of visual field provided in an embodiment of the present invention for calculating the helmet to be measured.
Embodiment
In order that the purpose of the present invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only explaining this hair
It is bright, it is not intended to limit the present invention.
Fig. 1 illustrates a kind of structural representation of visual field angle measuring device provided in an embodiment of the present invention, such as Fig. 1
Shown, the visual field angle measuring device may include：Measure support 1, picture pick-up device 2；
Picture pick-up device 2, simulation human eye pupil are positioned on measurement support 1, the figure presented for shooting the helmet 3 to be measured
Picture；Imaging device is built-in with the helmet to be measured so that virtual scene can be immersed in by wearing the user of the helmet to be measured
In.
Support 1 is measured, for placing picture pick-up device 2 and the helmet to be measured 3, wherein, picture pick-up device 2 is positioned over measurement support 1
First position, first position be user wear the helmet 3 to be measured when eyes position；The helmet 3 to be measured is positioned over measurement branch
The second place of frame, the second place are that the pre-determined distance between the image and picture pick-up device 2 presented according to the helmet 3 to be measured determines
's.
Wherein, the angle of visual field of picture pick-up device is more than the angle of visual field of the helmet to be measured.
In the specific implementation, imaging device built-in in the helmet to be measured can be that VR equipment can also be AR equipment, may be used also
To be that the user for wearing the helmet to be measured can be allowed to be immersed in other types of imaging device in virtual scene.
It should be noted that in Fig. 1, the helmet 3 to be measured is covering picture pick-up device 2 from the point of view of front view, i.e., from just
From the point of view of view, because the helmet 3 to be measured covers picture pick-up device 2, picture pick-up device 2 is can't see, simply for the mesh of display
Just show picture pick-up device 2 in Fig. 1.
Optionally, the pre-determined distance between the helmet 3 to be measured is presented image and picture pick-up device 2 can Jiao based on picture pick-up device
Away from and the sensitive chip unit length of picture pick-up device on pixel number determine.
In order to increase the degree of accuracy of visual field angle measuring device measurement, picture pick-up device 2 can be two, be respectively placed in measurement branch
On frame 1 on position corresponding with right and left eyes.Accordingly, can be also built-in with the helmet 3 to be measured two virtual reality display devices with
Allow a wearer to be immersed in virtual scene, in addition, the figure that each virtual reality display device in the helmet to be measured 3 is presented
The central point of picture is located on same central axis with the primary optical axis of picture pick-up device 2.
Optionally, in order to reduce influence of the light in the external world to the picture captured by picture pick-up device, may also include impermeable
The casing 4 of light, referring to Fig. 2.
Wherein, casing 4 is used to load measurement support 1, picture pick-up device 2 and the helmet to be measured 3.
According to the above as can be seen that the visual field angle measuring device that above-described embodiment provides, can be surveyed by the angle of visual field
Picture pick-up device in amount device shoots the image that the helmet to be measured is presented, and then according to the image, determines that the pixel of the image is joined
Number, finally according to the camera parameter of picture pick-up device and the pixel-parameters of the image, you can the angle of visual field of the helmet to be measured is determined, by
It can be determined in advance, and can be treated by the picture pick-up device shooting in visual field angle measuring device in the camera parameter of picture pick-up device
The image that gauge head helmet is presented, therefore, the angle of visual field of the helmet to be measured can quickly be calculated, it is to be measured so as to calculate automatically
The angle of visual field of the helmet, and then the measurement efficiency of the angle of visual field can be lifted.
The visual field angle measuring device provided based on above-described embodiment, the embodiment of the present invention also provide a kind of measurement angle of visual field
Method, as shown in figure 3, this method may include：
S301, image captured by picture pick-up device is obtained, and according to described image, determine the pixel-parameters of described image.
S302, according to the camera parameter of picture pick-up device and the pixel-parameters of described image, determine the visual field of the helmet to be measured
Angle；Wherein, the angle of visual field of the picture pick-up device is more than the angle of visual field of the helmet to be measured.
Specifically, picture pick-up device institute can be obtained by personal computer (Personal Computer, abbreviation PC) or terminal
The image of shooting, and according to described image, determine the pixel-parameters of described image, then set again by PC or terminal according to shooting
Standby camera parameter and the pixel-parameters of described image, determine the angle of visual field of the helmet to be measured, it should be noted that the present invention is real
Apply example and do not limit the angle of visual field that the helmet to be measured can be only calculated by PC or terminal, as long as there is calculating image pixel parameter capabilities
Equipment/device can calculate the angle of visual field of the helmet to be measured.
Fig. 4 is the image captured by the picture pick-up device being placed in lighttight casing, and in Fig. 4, image 5 is picture pick-up device
The image that the captured helmet to be measured is presented, x are the number of pixels of image 5 in the horizontal direction, and y is image 5 in Vertical Square
Upward number of pixels, the frame 6 of image 5.
It should be noted that when the angle of visual field of picture pick-up device is more than the angle of visual field of the helmet to be measured, captured by picture pick-up device
The image 5 that is presented of display device of the helmet to be measured can have a dark border 6, and when the angle of visual field of picture pick-up device be equal to it is to be measured
During the angle of visual field of the helmet, the image that the display device of the helmet to be measured captured by picture pick-up device is presented is that dark border is not present
6, so in order to ensure the accuracy of image parameter, it must ensure that the angle of visual field of picture pick-up device is more than the visual field of the helmet to be measured
Angle.
Optionally, in above-mentioned steps S302, according to the camera parameter of picture pick-up device and the pixel-parameters of image, it is determined that
During the angle of visual field of the helmet to be measured, the horizontal field of view angle of the helmet to be measured can be determined according to following equation (1).
Wherein, x is the number of pixels of image in the horizontal direction, and λ is in the sensitive chip unit length of picture pick-up device
Pixel number, f are the focal length of picture pick-up device.
Specific Computing Principle can be found in Fig. 5, and in Fig. 5, image 5 is presented by the helmet to be measured captured by picture pick-up device
Image, f are the focal length of picture pick-up device, the sensitive chip 7 of picture pick-up device, and A points are the location of picture pick-up device, and B points is treat
The position of the central point for the picture that gauge head helmet is presented, and the distance d=2 λ f from A points to B points, wherein, λ is picture pick-up device
Pixel number in sensitive chip unit length, f are the focal length of picture pick-up device.Therefore, according to mathematical principle, above-mentioned public affairs be can obtain
Formula (1), so as to calculate the horizontal field of view angle of the helmet to be measured.
Similarly, the vertical field of view angle of the helmet to be measured can be determined according to following equation (2)；
Wherein, y is the number of pixels of image in the vertical direction, and λ is in the sensitive chip unit length of picture pick-up device
Pixel number, f are the focal length of picture pick-up device.
Similarly, the diagonal angles of visual field of the helmet to be measured can be determined according to following equation (3)；
Wherein, x is the number of pixels of image in the horizontal direction, and y is the number of pixels of image in the vertical direction, and λ is
Pixel number in the sensitive chip unit length of picture pick-up device, f are the focal length of picture pick-up device.
It should be noted that the number of pixels y of image number of pixels x in the horizontal direction, image in the vertical direction,
The focal length f of pixel number λ, picture pick-up device in the sensitive chip unit length of picture pick-up device can pass through meter of the prior art
Calculation method determines.
In order to quickly calculate image number of pixels x in the horizontal direction and/or image in the vertical direction
Number of pixels y, so as to quickly calculate the angle of visual field of the helmet to be measured, and then lift the measurement efficiency of the angle of visual field, helmet institute to be measured
The image of presentation is preferably solid-color image, for example, being solid white image.
It should be noted that it can be two to work as picture pick-up device, it is respectively placed in corresponding with right and left eyes on measurement support
On position.Accordingly, two virtual reality display devices can be also built-in with the helmet to be measured to allow a wearer to be immersed in void
Intend in scene, in this case, each picture pick-up device can shoot the picture that each display device of the helmet to be measured is presented, from
And the angle of visual field of each display device of the helmet to be measured is calculated according to above-mentioned formula (1), formula (2), formula (3) respectively, this
When, the angle of visual field of two display devices of the helmet to be measured calculated is possible to identical, it is also possible to and it is different, as long as ensureing to be measured
Difference between the corresponding angle of visual field of two display devices of the helmet is in default scope.
According to the above as can be seen that the visual field angular measurement provided in an embodiment of the present invention provided using above-described embodiment
Device and method, including：Obtain the image captured by the picture pick-up device, and according to described image, determine the picture of described image
Plain parameter；According to the camera parameter of the picture pick-up device and the pixel-parameters of described image, regarding for the helmet to be measured is determined
Rink corner；Wherein, the angle of visual field of the picture pick-up device is more than the angle of visual field of the helmet to be measured.As can be seen that shooting is obtained first
Image captured by equipment, then according to described image, the pixel-parameters of described image are determined, finally taking the photograph according to picture pick-up device
As parameter and the pixel-parameters of image, you can the angle of visual field of the helmet to be measured is determined, because the camera parameter of picture pick-up device can
It is determined in advance, therefore, as long as the image captured by picture pick-up device can be rapidly obtained, you can be quickly calculated to be measured
The angle of visual field of the helmet, so as to calculate the angle of visual field of the helmet to be measured automatically, and then the measurement efficiency of the angle of visual field can be lifted.
The embodiments of the invention provide a kind of computing device, the computing device is specifically as follows desktop computer, portable
Computer, smart mobile phone, tablet personal computer, personal digital assistant (Personal Digital Assistant, PDA) etc..Such as Fig. 2
Shown, the computing device can include central processing unit (Center Processing Unit, CPU), memory, input/defeated
Go out equipment etc., input equipment can include keyboard, mouse, touch-screen etc., and output equipment can include display device, such as liquid crystal
Show device (Liquid Crystal Display, LCD), cathode-ray tube (Cathode Ray Tube, CRT) etc..
Memory can include read-only storage (ROM) and random access memory (RAM), and provide storage to processor
The programmed instruction and data stored in device.In embodiments of the present invention, memory can be used for storage based on the different of transaction data
The program of normal monitoring method.
By calling the programmed instruction of memory storage, processor is used to perform according to the programmed instruction of acquisition processor：
Obtain the image captured by the picture pick-up device, and according to described image, determine the pixel-parameters of described image；Taken the photograph according to described
As the camera parameter of equipment and the pixel-parameters of described image, the angle of visual field of the helmet to be measured is determined；Wherein, the shooting
The angle of visual field of equipment is more than the angle of visual field of the helmet to be measured.
The embodiments of the invention provide a kind of computer-readable storage medium, for saving as the calculating used in above-mentioned computing device
Machine programmed instruction, it includes the program for being used for performing the above-mentioned method for monitoring abnormality based on transaction data.
The computer-readable storage medium can be any usable medium or data storage device that computer can access, bag
Include but be not limited to magnetic storage (such as floppy disk, hard disk, tape, magneto-optic disk (MO) etc.), optical memory (such as CD, DVD,
BD, HVD etc.) and semiconductor memory (such as it is ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), solid
State hard disk (SSD)) etc..
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method or computer program product.
Therefore, the present invention can be using the embodiment in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Form.Deposited moreover, the present invention can use to can use in one or more computers for wherein including computer usable program code
The shape for the computer program product that storage media is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
- A kind of 1. visual field angle measuring device, it is characterised in that including：Measure support, picture pick-up device；The picture pick-up device, simulation human eye pupil are positioned on the measurement support, the figure presented for shooting the helmet to be measured Picture；Imaging device is built-in with the helmet to be measured so that virtual scene can be immersed in by wearing the user of the helmet to be measured In；The measurement support, for placing the picture pick-up device and the helmet to be measured, wherein, the picture pick-up device is positioned over institute The first position of measurement support is stated, the first position is eyes position when user wears the helmet to be measured；It is described The helmet to be measured is positioned over the second place of the measurement support, and the second place is presented according to the helmet to be measured What the pre-determined distance between image and the picture pick-up device determined；Wherein, the angle of visual field of the picture pick-up device is more than the angle of visual field of the helmet to be measured.
- 2. as claimed in claim 1 place, it is characterised in that also including lighttight casing；The casing, for loading measurement support, the picture pick-up device and the helmet to be measured.
- 3. device as claimed in claim 1, it is characterised in that the picture pick-up device is two, is respectively placed in the measurement On support on position corresponding with right and left eyes.
- 4. a kind of method that usage right requires the visual field angle measuring device measurement angle of visual field described in 1~3 any one, its feature exist In this method includes：Obtain the image captured by the picture pick-up device, and according to described image, determine the pixel-parameters of described image；According to the camera parameter of the picture pick-up device and the pixel-parameters of described image, the visual field of the helmet to be measured is determined Angle；Wherein, the angle of visual field of the picture pick-up device is more than the angle of visual field of the helmet to be measured.
- 5. method as claimed in claim 4, it is characterised in that the camera parameter according to the picture pick-up device and described The pixel-parameters of image, the angle of visual field of the helmet to be measured is determined, including：The horizontal field of view angle of the helmet to be measured is determined according to the following equation；<mrow> <msub> <mi>&theta;</mi> <mi>H</mi> </msub> <mo>=</mo> <mn>2</mn> <mi>arctan</mi> <mrow> <mo>(</mo> <mfrac> <mi>x</mi> <mrow> <mn>2</mn> <mi>&lambda;</mi> <mi>f</mi> </mrow> </mfrac> <mo>)</mo> </mrow> </mrow>Wherein, x is the number of pixels of described image in the horizontal direction, and λ is the sensitive chip unit length of the picture pick-up device On pixel number, f be the picture pick-up device focal length.
- 6. method as claimed in claim 4, it is characterised in that the camera parameter according to the picture pick-up device and described The pixel-parameters of image, the angle of visual field of the helmet to be measured is determined, including：The vertical field of view angle of the helmet to be measured is determined according to the following equation；<mrow> <msub> <mi>&theta;</mi> <mi>V</mi> </msub> <mo>=</mo> <mn>2</mn> <mi>arctan</mi> <mrow> <mo>(</mo> <mfrac> <mi>y</mi> <mrow> <mn>2</mn> <mi>&lambda;</mi> <mi>f</mi> </mrow> </mfrac> <mo>)</mo> </mrow> </mrow>Wherein, y is the number of pixels of described image in the vertical direction, and λ is the sensitive chip unit length of the picture pick-up device On pixel number, f be the picture pick-up device focal length.
- 7. method as claimed in claim 4, it is characterised in that the camera parameter according to the picture pick-up device and described The pixel-parameters of image, the angle of visual field of the helmet to be measured is determined, including：The diagonal angles of visual field of the helmet to be measured is determined according to the following equation；<mrow> <msub> <mi>&theta;</mi> <mi>M</mi> </msub> <mo>=</mo> <mn>2</mn> <mi>arctan</mi> <mrow> <mo>(</mo> <mfrac> <msqrt> <mrow> <msup> <mi>x</mi> <mn>2</mn> </msup> <mo>+</mo> <msup> <mi>y</mi> <mn>2</mn> </msup> </mrow> </msqrt> <mrow> <mn>2</mn> <mi>f</mi> <mi>&lambda;</mi> </mrow> </mfrac> <mo>)</mo> </mrow> </mrow>Wherein, x is the number of pixels of described image in the horizontal direction, and y is the number of pixels of described image in the vertical direction, λ is the pixel number in the sensitive chip unit length of the picture pick-up device, and f is the focal length of the picture pick-up device.
- 8. the method as described in any one of claim 4~7, it is characterised in that described image is solid-color image.
- A kind of 9. computing device, it is characterised in that including：Memory, instructed for storage program；Processor, for calling the programmed instruction stored in the memory, according to acquisition program perform as claim 4 to Method described in 8 any one.
- 10. a kind of computer-readable storage medium, it is characterised in that the computer-readable recording medium storage has computer can perform Instruction, the computer executable instructions are used to make the computer perform claim require the method described in 4 to 8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710944148.4A CN107607295A (en) | 2017-09-30 | 2017-09-30 | A kind of visual field angle measuring device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710944148.4A CN107607295A (en) | 2017-09-30 | 2017-09-30 | A kind of visual field angle measuring device and method |
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| Publication Number | Publication Date |
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| CN107607295A true CN107607295A (en) | 2018-01-19 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109186959A (en) * | 2018-09-28 | 2019-01-11 | 歌尔股份有限公司 | Detection method, device and the equipment of the curvature of field of VR optics module |
| CN109253868A (en) * | 2018-10-24 | 2019-01-22 | 京东方科技集团股份有限公司 | A kind of visual field angle measuring method and device |
| CN109738157A (en) * | 2018-12-11 | 2019-05-10 | 信利光电股份有限公司 | Field angle detection method, device and the readable storage medium storing program for executing of structured light projection device |
| CN111947894A (en) * | 2020-07-29 | 2020-11-17 | 深圳惠牛科技有限公司 | Measuring method, system, device and terminal equipment |
| CN111982468A (en) * | 2020-07-29 | 2020-11-24 | 深圳惠牛科技有限公司 | Method, device and system for measuring field angle and computer storage medium |
| CN112132909A (en) * | 2020-09-23 | 2020-12-25 | 字节跳动有限公司 | Parameter acquisition method and device, media data processing method and storage medium |
| CN112179629A (en) * | 2020-09-29 | 2021-01-05 | 北京理工大学 | Method for measuring virtual scene field angle of virtual display equipment |
| CN113252309A (en) * | 2021-04-19 | 2021-08-13 | 苏州市计量测试院 | Testing method and testing device for near-to-eye display equipment and storage medium |
| TWI808783B (en) * | 2022-01-12 | 2023-07-11 | 宏達國際電子股份有限公司 | Method for adjusting virtual object, host, and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186959A (en) * | 2018-09-28 | 2019-01-11 | 歌尔股份有限公司 | Detection method, device and the equipment of the curvature of field of VR optics module |
| CN109186959B (en) * | 2018-09-28 | 2020-02-07 | 歌尔股份有限公司 | Method, device and equipment for detecting field curvature of VR optical module |
| CN109253868A (en) * | 2018-10-24 | 2019-01-22 | 京东方科技集团股份有限公司 | A kind of visual field angle measuring method and device |
| CN109253868B (en) * | 2018-10-24 | 2020-04-24 | 京东方科技集团股份有限公司 | Method and device for measuring field angle |
| CN109738157A (en) * | 2018-12-11 | 2019-05-10 | 信利光电股份有限公司 | Field angle detection method, device and the readable storage medium storing program for executing of structured light projection device |
| CN111982468A (en) * | 2020-07-29 | 2020-11-24 | 深圳惠牛科技有限公司 | Method, device and system for measuring field angle and computer storage medium |
| CN111947894A (en) * | 2020-07-29 | 2020-11-17 | 深圳惠牛科技有限公司 | Measuring method, system, device and terminal equipment |
| CN112132909A (en) * | 2020-09-23 | 2020-12-25 | 字节跳动有限公司 | Parameter acquisition method and device, media data processing method and storage medium |
| CN112132909B (en) * | 2020-09-23 | 2023-12-22 | 字节跳动有限公司 | Parameter acquisition method and device, media data processing method and storage medium |
| CN112179629A (en) * | 2020-09-29 | 2021-01-05 | 北京理工大学 | Method for measuring virtual scene field angle of virtual display equipment |
| CN112179629B (en) * | 2020-09-29 | 2021-07-09 | 北京理工大学 | Method for measuring virtual scene field angle of virtual display equipment |
| CN113252309A (en) * | 2021-04-19 | 2021-08-13 | 苏州市计量测试院 | Testing method and testing device for near-to-eye display equipment and storage medium |
| TWI808783B (en) * | 2022-01-12 | 2023-07-11 | 宏達國際電子股份有限公司 | Method for adjusting virtual object, host, and computer readable storage medium |
| US20230222625A1 (en) * | 2022-01-12 | 2023-07-13 | Htc Corporation | Method for adjusting virtual object, host, and computer readable storage medium |
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