CN110264408A - Measurement method, device, system and the controller and medium of near-eye display - Google Patents
Measurement method, device, system and the controller and medium of near-eye display Download PDFInfo
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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- G06T3/4053—Scaling of whole images or parts thereof, e.g. expanding or contracting based on super-resolution, i.e. the output image resolution being higher than the sensor resolution
- G06T3/4069—Scaling of whole images or parts thereof, e.g. expanding or contracting based on super-resolution, i.e. the output image resolution being higher than the sensor resolution by subpixel displacements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4053—Scaling of whole images or parts thereof, e.g. expanding or contracting based on super-resolution, i.e. the output image resolution being higher than the sensor resolution
- G06T3/4076—Scaling of whole images or parts thereof, e.g. expanding or contracting based on super-resolution, i.e. the output image resolution being higher than the sensor resolution using the original low-resolution images to iteratively correct the high-resolution images
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Abstract
The present invention relates to a kind of measurement method of near-eye display, device, system and controller and medium, method includes: to obtain pixel ratio, the amount of movement ratio of virtual image imaging and virtual image on image-forming component of image-forming component and virtual image；Determine the position to be moved of virtual image；Control virtual image is moved to each position to be moved, and the image-forming component image of each position to be moved is acquired on image-forming component, obtains the rate of travel between image-forming component image sequence and each adjacent two image-forming component image；Image reorganization is carried out based on the rate of travel between image-forming component image sequence and two neighboring image-forming component image, obtains the picture of the high-fidelity of virtual image to be measured.Device of the present invention without Mechanical Moving measuring system, it is only necessary to which, by test pattern scanning to the different positions of micro-display, corresponding acquisition multiple image carries out image reorganization, can obtain the picture of the virtual image of high-fidelity, calculating is simple, at low cost, precision is high.
Description
Technical field
The present invention relates to nearly eye field of display technology more particularly to a kind of measurement methods of near-eye display, device, system
And controller and medium.
Background technique
Existing near-eye display includes virtual reality display (Virtual Reality Display) and augmented reality
Display (Augmented Reality Display), as shown in Figure 1, near-eye display generally include a micro-display and
One camera lens, the distance between micro-display and camera lens are slightly less than the focal length of camera lens.A pixel in this way on micro-display
For the light of sending by that can be accumulated into parallel rays after camera lens, these parallel rays enter eyes by pupil can be in view
Picture is formed on film.Reverse extending enters the light of eyes, so that it may corresponding virtual image point is obtained, on entire micro-display
Image can also form corresponding virtual image at same distance.In order to measure near-eye display virtual image quality,
It is generally necessary to which one is similar to the imaging device of human eye to acquire the picture of the picture of a virtual image to be measured, this imaging device claims
For measuring system.
As shown in Fig. 2, measuring system generally includes the photographic film and image-forming component for having preposition aperture, measurement system
System is for high fidelity acquiring the picture of virtual image.In actual use, the virtual image of near-eye display have big visual field and
The characteristics of high-resolution, for example, in order to bring feeling of immersion to user, need the field angle in horizontal and vertical direction reach 100 ° ×
100 °, and resolution ratio needs to reach 120 pixels in every degree, in this way in the entire visual field of virtual image, just have 12000 ×
The pixel of 12000 virtual images.It follows that the pixel quantity and density of existing virtual image have been more than currently on the market
The imaging capability of existing test macro.In order to solve this problem, following two method is generallyd use in the prior art to survey
Near-eye display is measured, method 1: neglecting the imaging system of rink corner using one, acquires a part of virtual image every time, passes through machine
Tool device scanning imaging system, takes the different piece of virtual image, and by the high-resolution image mosaic of several small field of view
Get up, obtains the picture of entire virtual image.Method 2: it using the imaging system of one big visual field, is imaged in this imaging system
The pixel quantity of element is less than the pixel quantity of tested virtual image, then using mechanical device (such as piezoelectric ceramics or
Person's parallel plate) mobile image-forming component and virtual image picture position, but need to guarantee that each rate of travel is less than
The pixel size of one image-forming component finally utilizes figure to collect the picture of the low resolution of several different virtual images
As the method rebuild obtains the picture of the high-fidelity of virtual image.
But existing method has the disadvantages that 1) existing method needs accurate Mechanical Moving device whole to change
The position of a measuring system or image-forming component；2) it due to frequently carrying out mechanical scanning when measuring, needs periodically to correct measurement
Mechanical scanning component in system；3) different tested near-eye displays is needed due to the difference of its form using difference
Scanning device come it is matching, it is at high cost.
Summary of the invention
Present invention aims at provide measurement method, device, system and controller and the Jie of a kind of near-eye display
Matter, the device without Mechanical Moving measuring system, it is only necessary to which, by test pattern scanning to the different positions of micro-display, correspondence is adopted
Collect multiple image, then carry out image reorganization, can obtain the picture of the virtual image of high-fidelity, calculation method is simple, it is at low cost,
Measurement accuracy is high.
In order to solve the above-mentioned technical problem, according to a first embodiment of the present invention, a kind of measurement of near-eye display is provided
Method, comprising:
Obtain the pixel ratio of image-forming component and virtual image；
The virtual image amount of movement of imaging and virtual image ratio on image-forming component is obtained according to the pixel ratio
Example；
According to the position to be moved of the pixel ratio and amount of movement ratio-dependent virtual image；
It controls the virtual image and is moved to each position to be moved, corresponding acquisition is each described on image-forming component
The corresponding image-forming component image in position to be moved, obtains image-forming component image sequence, and obtain the image-forming component image sequence
Rate of travel between middle each adjacent two image-forming component image；Based on the image-forming component image sequence and two neighboring
Rate of travel between image-forming component image carries out image reorganization, obtains the picture of virtual image to be measured.
Further, the pixel ratio for obtaining image-forming component and virtual image, comprising:
Two pixels are lighted along virtual image first direction, position coordinates in a first direction are respectively A and B, distance
For (B-A) * Phr-x, wherein B > A, Phr-xIndicate the pixel size of virtual image in a first direction；
It is corresponding on image-forming component to obtain the corresponding picture of two pixels lighted along virtual image first direction,
The position coordinates of first direction on image-forming component are respectively a and b, and distance is (b-a) * Plr-x, wherein b > a, Plr-xIt is expressed as
The pixel size of element in a first direction；
According to (B-A) * Phr-x=(b-a) * Plr-x, can obtain on first direction image-forming component and virtual image pixel size it
Between ratio Plr-x/Phr-x=(B-A)/(b-a)；
The ratio P in second direction between image-forming component and virtual image pixel size is obtained with above-mentioned stepslr-y/Phr-y
=(D-C)/(d-c), wherein Plr-yIndicate pixel size of the image-forming component in second direction, Phr-yIndicate virtual image second
The pixel size in direction, D, C indicate the position coordinates for two pixels lighted along virtual image second direction, D > C, d, c table
Show the position coordinates of second direction of the corresponding picture of two pixels lighted along virtual image second direction on image-forming component,
D > c, the second direction and the first direction are perpendicular.
Further, described that virtual image imaging and virtual graph on image-forming component are obtained according to the pixel ratio
The amount of movement ratio of picture, comprising:
Virtual image moves the pixel of 1 virtual image in a first direction, the picture of corresponding virtual image at
The pixel of mobile Sx image-forming component on element,
Sx=Phr-x/Plr-x=(b-a)/(B-A) (1)；
Virtual image moves the pixel of 1 virtual image in a second direction, the picture of corresponding virtual image at
The pixel of mobile Sy image-forming component on element,
Sy=Phr-y/Plr-y=(d-c)/(D-C) (2).
Further, according to the position to be moved of the pixel ratio and amount of movement ratio-dependent virtual image, comprising:
By Plr-x/Phr-xInteger value Rx is obtained after being rounded up；
By Plr-y/Phr-yInteger value Ry is obtained after being rounded up；
Using the initial position of virtual image as origin, coordinate is established using the first direction and second direction as reference axis
System draws in any one coordinate into quadrant along at each rounded coordinate of the first direction apart from origin [0-Rx]
One first straight line vertical with the first direction, each rounded coordinate along the second direction apart from origin [0-Ry]
Describe a second straight line vertical with the second direction, all intersection point positions of the first straight line and the second straight line in place
It sets as the position to be moved of the virtual image.
Further, the phase obtained in the image-forming component image sequence between each adjacent two image-forming component image
To amount of movement, comprising:
Obtain image-forming component image sequence in the corresponding virtual image of each adjacent two image-forming component image in a first direction
On first movement amount, and the second amount of movement in a second direction；
The image-forming component image is obtained according to the first movement amount, the second amount of movement and formula (1) and formula (2)
First rate of travel in a first direction between each adjacent two image-forming component image in sequence, and in a second direction
Second rate of travel.
Further, the phase based between the image-forming component image sequence and two neighboring image-forming component image
Image reorganization is carried out to amount of movement, obtains the picture of virtual image to be measured, comprising:
Based on the rate of travel between the image-forming component image sequence and two neighboring image-forming component image, use
Super-Resolution Image Reconstruction carries out image reorganization, obtains the picture of virtual image to be measured.
Further, the method also includes: controlled by the movement on the microdisplay of control test image described
Virtual image is moved to each position to be moved.
According to a second embodiment of the present invention, a kind of measuring device of near-eye display is provided, comprising:
Pixel ratio obtains module, is configured to obtain the pixel ratio of image-forming component and virtual image；
Amount of movement ratio obtain module, be configured to according to the pixel ratio obtain virtual image on image-forming component institute at
Picture and virtual image amount of movement ratio；
Position determination module to be moved, be configured to according to the pixel ratio and amount of movement ratio-dependent virtual image to
Shift position；
Image sequence obtains module, is configured to control the virtual image and is moved to each position to be moved, at
The corresponding image-forming component image in each position to be moved of corresponding acquisition, obtains image-forming component image sequence on element, and
Obtain the rate of travel in the image-forming component image sequence between each adjacent two image-forming component image；
Image reorganization module, be configured to the image-forming component image sequence and two neighboring image-forming component image it
Between rate of travel carry out image reorganization, obtain the picture of virtual image to be measured.
Further, it includes that the first pixel ratio acquiring unit and the second pixel ratio obtain that the pixel ratio, which obtains module,
Take unit, wherein
The first pixel ratio acquiring unit is configured that
Two pixels are lighted along virtual image first direction, position coordinates in a first direction are respectively A and B, distance
For (B-A) * Phr-x, wherein B > A, Phr-xIndicate the pixel size of virtual image in a first direction；
It is corresponding on image-forming component to obtain the corresponding picture of two pixels lighted along virtual image first direction,
The position coordinates of first direction on image-forming component are respectively a and b, and distance is (b-a) * Plr-x, wherein b > a, Plr-xIt is expressed as
The pixel size of element in a first direction；
According to (B-A) * Phr-x=(b-a) * Plr-x, can obtain on first direction image-forming component and virtual image pixel size it
Between ratio Plr-x/Phr-x=(B-A)/(b-a)；
The second pixel ratio acquiring unit is configured that
Execution step with the first pixel ratio acquiring unit obtains image-forming component and virtual image in second direction
Ratio P between pixel sizelr-y/Phr-y=(D-C)/(d-c), wherein Plr-yIndicate image-forming component in the pixel of second direction
Size, Phr-yVirtual image is indicated in the pixel size of second direction, D, C indicate two lighted along virtual image second direction
The position coordinates of pixel, D > C, d, c expression are being imaged along the corresponding picture of two pixels that virtual image second direction is lighted
The position coordinates of second direction on element, d > c, the second direction and the first direction are perpendicular.
Further, it includes first movement amount ratio acquisition unit and the second amount of movement that the amount of movement ratio, which obtains module,
Ratio acquisition unit, wherein
The first movement amount ratio acquisition unit is configured that
Virtual image moves the pixel of 1 virtual image in a first direction, the picture of corresponding virtual image at
The pixel of mobile Sx image-forming component on element,
Sx=Phr-x/Plr-x=(b-a)/(B-A) (1)；
The second amount of movement ratio acquisition unit is configured that
Virtual image moves the pixel of 1 virtual image in a second direction, the picture of corresponding virtual image at
The pixel of mobile Sy image-forming component on element,
Sy=Phr-y/Plr-y=(d-c)/(D-C) (2).
Further, the position determination module concrete configuration to be moved are as follows:
By Plr-x/Phr-xInteger value Rx is obtained after being rounded up；
By Plr-y/Phr-yInteger value Ry is obtained after being rounded up；
Using the initial position of virtual image as origin, coordinate is established using the first direction and second direction as reference axis
System draws in any one coordinate into quadrant along at each rounded coordinate of the first direction apart from origin [0-Rx]
One first straight line vertical with the first direction, each rounded coordinate along the second direction apart from origin [0-Ry]
Describe a second straight line vertical with the second direction, all intersection point positions of the first straight line and the second straight line in place
It sets as the position to be moved of the virtual image.
Further, described image retrieval module includes rate of travel acquiring unit, and the rate of travel obtains
Unit is taken to be configured that
Obtain image-forming component image sequence in the corresponding virtual image of each adjacent two image-forming component image in a first direction
On first movement amount, and the second amount of movement in a second direction；
The image-forming component image is obtained according to the first movement amount, the second amount of movement and formula (1) and formula (2)
First rate of travel in a first direction between each adjacent two image-forming component image in sequence, and in a second direction
Second rate of travel.
Further, described image recombination module using Super-Resolution Image Reconstruction carry out image reorganization, obtain to
Survey the picture of virtual image.
Further, described image retrieval module is additionally configured to the shifting by control test image on the microdisplay
It moves to control the virtual image and be moved to each position to be moved.
According to a third embodiment of the present invention, a kind of controller is provided comprising memory and processor, the memory
It is stored with computer program, the step of described program can be realized the method when being executed by the processor.
According to a fourth embodiment of the present invention, a kind of computer readable storage medium is provided, for storing computer program,
The step of described program realizes the method when by a computer or processor execution.
According to a fifth embodiment of the present invention, a kind of measuring system of near-eye display is provided, comprising:
Component is measured, the measurement component includes preposition aperture, photographic film, image-forming component and controller,
Near-eye display, the near-eye display form image on the image-forming component；
The controller includes memory and processor, and the memory is stored with computer program, and described program is in quilt
The step of processor can be realized the measurement method of the near-eye display when executing.
Further, the field angle of the image-forming component is greater than the field angle of the near-eye display, and described at pixel
The resolution ratio of part is lower than the resolution ratio of the near-eye display.
The present invention has obvious advantages and beneficial effects compared with the existing technology.By above-mentioned technical proposal, the present invention
A kind of measurement method of near-eye display, device, system and controller and medium can reach comparable technical progress and reality
With property, and with the extensive utility value in industry, at least have the advantage that
(1) cost is relatively low by the present invention, still can be based on existing low resolution test equipment, the present invention is cooperated to obtain
The picture of the virtual image of high-fidelity；
(2) by the movement of control micro-display test pattern, image-forming component image sequence is acquired, accurate machine is not needed
Tool device moves image-forming component or entire test equipment；
(3) image-forming component pattern sequence is calculated per adjacent two images by the pixel ratio of image-forming component and virtual image
Between rate of travel, calculate it is more accurate, measurement accuracy is higher.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is existing near-eye display image-forming principle schematic diagram；
Fig. 2 is the measuring system schematic illustration of existing near-eye display；
Fig. 3 (a) is image schematic diagram on the micro-display of existing near-eye display；
The virtual image schematic diagram that presents of the Fig. 3 (b) by existing near-eye display；
Fig. 3 (c) is the image schematic diagram that the image-forming component of existing near-eye display acquires；
Fig. 4 is the measuring method flow chart for the near-eye display that one embodiment of the invention provides；
Fig. 5 (a) is the pixel position view for the virtual image that one embodiment of the invention provides；
Fig. 5 (b) is the pixel position view for the image-forming component that one embodiment of the invention provides；
Two pixel schematic diagrames lighted on the virtual image first direction that Fig. 6 (a) provides for one embodiment of the invention；
Two pixels lighted are being imaged on the virtual image first direction that Fig. 6 (b) provides for one embodiment of the invention
Pixel position view on element；
Two pixel schematic diagrames lighted in the virtual image second direction that Fig. 7 (a) provides for one embodiment of the invention；
Two pixels lighted are being imaged in the virtual image second direction that Fig. 7 (b) provides for one embodiment of the invention
Pixel position view on element；
Fig. 8 is that the virtual image that one embodiment of the invention provides needs mobile whole position views；
Fig. 9 is amount of movement schematic diagram of the example shown in Fig. 8 by the picture of virtual image as unit of image-forming component pixel size；
Figure 10 (a) is the virtual image moving process schematic diagram that one embodiment of the invention provides；
Figure 10 (b) is that the picture of corresponding virtual image on image-forming component corresponds to the moving process schematic diagram of Figure 10 (a)；
Figure 11 (a) is that the virtual image movement routine that one embodiment of the invention provides is to scan schematic diagram along row；
Figure 11 (b) is that the virtual image movement routine that one embodiment of the invention provides is along column scan schematic diagram；
Figure 12 (a) is virtual image schematic diagram in the measurement process for the near-eye display that one embodiment of the invention provides；
Figure 12 (b) is the virtual of image-forming component acquisition in the measurement process for the near-eye display that one embodiment of the invention provides
The schematic diagram of the picture of image；
Figure 12 (c) is in the measurement process for the near-eye display that one embodiment of the invention provides by several low-resolution images
The virtual image schematic diagram of reconstruction；
Figure 13 is the measuring device schematic diagram for the near-eye display that one embodiment of the invention provides.
[symbol description]
1: pixel ratio obtains module 2: amount of movement ratio obtains module
3: position determination module 4 to be moved: image sequence obtains module
5: image reorganization module
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to a kind of measurement method of near-eye display proposed according to the present invention, device, system and control
The specific embodiment and its effect of device and medium, detailed description is as follows.
The virtual image pixel quantity and density of existing near-eye display device have been more than existing test currently on the market
The imaging capability of system, as shown in Fig. 3 (a), Fig. 3 (b), Fig. 3 (c), image-forming component acquisition image be not fidelity void
The picture of quasi- image, but the lower image of resolution ratio need that higher cost is spent to carry out sweeping for mechanical device in the prior art
The accurate movement of measuring system component is retouched or controlled to obtain the picture of the virtual image of fidelity.The embodiment of the invention provides one
The measurement method of kind near-eye display, the device without Mechanical Moving measuring system, it is only necessary to by test pattern scanning to micro display
The different positions of device, correspondence collects multiple image, then carries out image reorganization, can obtain the virtual image of high-fidelity
Picture, as shown in figure 4, specifically includes the following steps:
Step S1, the pixel ratio of image-forming component and virtual image is obtained；
As one embodiment, as shown in figure 5, representing the pixel point of virtual image in Fig. 5 (a) with the array of triangle
It sets, represents the position of the pixel of image-forming component in Fig. 5 (b) with the array of empty circles, define between adjacent pixel
Distance is the size of pixel, and the definition of location of pixels coordinate value from left to right successively becomes larger, wherein the pixel size of first direction
It can be the same or different with the pixel size of second direction.In Fig. 5, the pixel size of the first direction of virtual image
For Phr-x, the pixel size of second direction is Phr-y, correspondingly, the pixel size of the first direction of image-forming component is Plr-x, second
The pixel size in direction is Plr-x, first direction and second direction are perpendicular, and as an example, first direction is level side
To second direction is vertical direction.
The step S1 includes:
Step S11, two pixels are lighted along virtual image first direction, position coordinates in a first direction are respectively A
And B, distance are (B-A) * Phr-x, as shown in Fig. 6 (a), wherein B > A, Phr-xIndicate that the pixel of virtual image in a first direction is big
It is small；
Step S12, corresponding on image-forming component to obtain two pixels pair lighted along virtual image first direction
The picture answered, the position coordinates of the first direction on image-forming component are respectively a and b, and distance is (b-a) * Plr-x, such as Fig. 6 (b) institute
Show, wherein b > a, Plr-xIndicate the pixel size of image-forming component in a first direction；
Step S13, according to (B-A) * Phr-x=(b-a) * Plr-x, image-forming component and virtual image picture on first direction can be obtained
Ratio P between plain sizelr-x/Phr-x=(B-A)/(b-a), it is to be understood that due to virtual image pixel size and imaging
The pixel size of element is different, therefore, when A and B are integer value, the value of a and b not necessarily integer；
Step S14, with step S11- step S13, obtain in second direction image-forming component and virtual image pixel size it
Between ratio Plr-y/Phr-y=(D-C)/(d-c), as shown in Fig. 7 (a) and Fig. 7 (b), location of pixels coordinate define from top to bottom according to
It is secondary to become larger.Wherein, Plr-yIndicate pixel size of the image-forming component in second direction, Phr-yIndicate virtual image in second direction
Pixel size, D, C indicate that the position coordinates for two pixels lighted along virtual image second direction, D > C, d, c are indicated along void
The position coordinates of second direction of the corresponding picture of two pixels that quasi- image second direction is lighted on image-forming component, d > c, institute
It states second direction and the first direction is perpendicular.
Step S2, the shifting of virtual image imaging and virtual image on image-forming component is obtained according to the pixel ratio
Momentum ratio；
As an example, the step S2 includes:
Step S21, virtual image moves the pixel of 1 virtual image, corresponding virtual image in a first direction
Picture mobile Sx image-forming component on image-forming component pixel,
Sx=Phr-x/Plr-x=(b-a)/(B-A) (1)；
Step S22, virtual image moves the pixel of 1 virtual image, corresponding virtual image in a second direction
Picture mobile Sy image-forming component on image-forming component pixel,
Sy=Phr-y/Plr-y=(d-c)/(D-C) (2).
In this way, when control virtual image along a first direction or second direction is mobile, so that it may accurately obtain therewith
Amount of movement of the picture of corresponding virtual image as unit of on image-forming component by the pixel size of image-forming component.For example, by virtual
Image moves the pixel of 2 virtual images in a first direction, corresponding empty in the pixel of mobile 3 virtual images of second direction
The amount of movement of picture first direction on image-forming component of quasi- image is 2*Sx, and the amount of movement of second direction is 3*Sy.
Step S3, according to the position to be moved of the pixel ratio and amount of movement ratio-dependent virtual image；
As an example, the step S3 includes:
Step S31, by Plr-x/Phr-xInteger value Rx is obtained after being rounded up；
Step S32, by Plr-y/Phr-yInteger value Ry is obtained after being rounded up；
Step S33, it using the initial position of virtual image as origin, is built using the first direction and second direction as reference axis
Vertical coordinate system, each rounded coordinate in any one coordinate into quadrant, along the first direction apart from origin [0-Rx]
A first straight line vertical with the first direction is drawn at place, whole apart from each of origin [0-Ry] along the second direction
One second straight line vertical with the second direction of description at number coordinate, the first straight line and the second straight line own
Intersection position is the position to be moved of the virtual image, then position to be moved has (1+Rx) * (1+Ry) a, as shown in Figure 8
In example, Rx is equal to the intersection point that 4, Ry is equal to dotted line in 4, Fig. 8, that is, the position where black triangle is exactly virtual image
Mobile whole positions are needed, since the pixel size of horizontal direction and vertical direction is not related, so the value of Rx and Ry
It can not also be identical.Corresponding, Fig. 9 is shown in the case that Rx is equal to 4 equal to 4, Ry, and virtual image is in the horizontal direction and vertically
Direction is mobile by step-length of the pixel size of 1 virtual image, and the picture of corresponding virtual image is on image-forming component with imaging
The pixel size of element is the amount of movement of unit.
Step S4, it controls the virtual image and is moved to each position to be moved, the corresponding acquisition on image-forming component
The corresponding image-forming component image in each position to be moved, obtains image-forming component image sequence, and obtain the image-forming component
Rate of travel in image sequence between each adjacent two image-forming component image；Figure 10 (a) shows virtual image at one
Moving process in embodiment, the picture that Figure 10 (b) shows corresponding virtual image on image-forming component correspond to the shifting of Figure 10 (a)
Dynamic process.
As an example, mobile to control the virtual image by the movement of control test image on the microdisplay
Extremely each position to be moved, therefore the embodiment of the present invention is not necessarily to mechanical scanning, only by control test image in micro display
It is corresponding on image-forming component under movement on device to obtain multiple image, and image reorganization is carried out, it can with high fidelity acquire void to be measured
The picture of quasi- image.
It should be noted that the specific movement routine of virtual image is unlimited, such as can be along row scanning or along column scan, such as
Shown in Figure 11 (a) and Figure 11 (b), as long as finally traversing all positions to be moved.
As an example, in the step S4, it is described obtain in the image-forming component image sequence each adjacent two at
Rate of travel between element image, comprising:
Step S41, the corresponding virtual image of each adjacent two image-forming component image in image-forming component image sequence is obtained to exist
First movement amount on first direction, and the second amount of movement in a second direction；
Step S42, the imaging is obtained according to the first movement amount, the second amount of movement and formula (1) and formula (2)
First rate of travel in a first direction between each adjacent two image-forming component image in element image sequence, and second
The second rate of travel on direction.
By above-mentioned calculating process it is found that the rate of travel between each adjacent two image-forming component image is less than into pixel
The amount of movement of part pixel size.
Step S5, based on the relative movement between the image-forming component image sequence and two neighboring image-forming component image
Amount carries out image reorganization, obtains the picture of the high-fidelity of virtual image to be measured.
As an example, in step S5, the image-forming component image sequence and two neighboring image-forming component figure are based on
Rate of travel as between carries out image reorganization using Super-Resolution Image Reconstruction, obtains the height of virtual image to be measured
The picture of fidelity.Existing measuring device can be used to realize in the image-forming component image sequence, even if resolution ratio is lower, passes through this
Inventive embodiments the method obtain low resolution image-forming component image sequence, then using Super-Resolution Image Reconstruction into
Row image reorganization also can get the picture of the virtual image to be measured of high-fidelity, effect picture such as Figure 12 (a), Figure 12 (b) and Figure 12 (c) institute
Show, detects corresponding near-eye display device by detecting the quality of picture of the virtual image to be measured.
The embodiment of the invention also provides a kind of measuring devices of near-eye display, as shown in figure 13, including pixel ratio
Obtain module 1, amount of movement ratio obtains module 2, position determination module to be moved 3, image sequence obtain module 4 and image reorganization
Module 5, wherein pixel ratio obtains module 1 and is configured to obtain the pixel ratio of image-forming component and virtual image；Amount of movement ratio
Module 2 is obtained to be configured to obtain the shifting of virtual image imaging and virtual image on image-forming component according to the pixel ratio
Momentum ratio；Position determination module 3 to be moved is configured to according to the pixel ratio and amount of movement ratio-dependent virtual image
Position to be moved；Image sequence, which obtains module 4 and is configured to control the virtual image, is moved to each position to be moved,
The corresponding image-forming component image in each position to be moved of corresponding acquisition, obtains image-forming component image sequence on image-forming component,
And obtain the rate of travel in the image-forming component image sequence between each adjacent two image-forming component image；Image reorganization mould
Block 5 is configured to the progress of the rate of travel between the image-forming component image sequence and two neighboring image-forming component image
Image reorganization obtains the picture of the high-fidelity of virtual image to be measured.
As an example, it includes the first pixel ratio acquiring unit and the second pixel that the pixel ratio, which obtains module 1,
Ratio acquisition unit, wherein the first pixel ratio acquiring unit is configured that as shown in Fig. 6 (a), along virtual image first
Two pixels are lighted in direction, and position coordinates in a first direction are respectively A and B, and distance is (B-A) * Phr-x, wherein B > A,
Phr-xIndicate the pixel size of virtual image in a first direction；It is corresponding on image-forming component to obtain the edge as shown in Fig. 6 (b)
The corresponding picture of two pixels that virtual image first direction is lighted, the position coordinates difference of the first direction on image-forming component
For a and b, distance is (b-a) * Plr-x, wherein b > a, Pxr-xIndicate the pixel size of image-forming component in a first direction；According to (B-
A)*Phr-x=(b-a) * Plr-x, the ratio P on first direction between image-forming component and virtual image pixel size can be obtainedlr-x/
Phr-x=(B-A)/(b-a).As shown in Fig. 7 (a) and Fig. 7 (b), the second pixel ratio acquiring unit is configured to described the
The execution step of one pixel ratio acquiring unit obtains the ratio in second direction between image-forming component and virtual image pixel size
Example Plr-y/Phr-y=(D-C)/(d-c), wherein Plr-yIndicate pixel size of the image-forming component in second direction, Phr-yIndicate empty
For quasi- image in the pixel size of second direction, D, C indicate that the position for two pixels lighted along virtual image second direction is sat
Mark, D > C, d, c indicate second party of the corresponding picture of two pixels lighted along virtual image second direction on image-forming component
To position coordinates, d > c, the second direction and the first direction are perpendicular, as an example, first direction be level side
To second direction is vertical direction.
As an example, it includes first movement amount ratio acquisition unit and second that the amount of movement ratio, which obtains module 2,
Amount of movement ratio acquisition unit, wherein the first movement amount ratio acquisition unit is configured that virtual image in a first direction
The pixel of mobile 1 virtual image, the picture of the picture of corresponding virtual image mobile Sx image-forming component on image-forming component
Element,
Sx=Phr-x/Plr-x=(b-a)/(B-A) (1)；
The second amount of movement ratio acquisition unit is configured that virtual image moves 1 virtual image in a second direction
Pixel, the pixel of picture mobile Sy image-forming component on image-forming component of corresponding virtual image,
Sy=Phr-y/Plr-y=(d-c)/(D-C) (2).
In this way, when control virtual image along a first direction or second direction is mobile, so that it may accurately obtain therewith
Amount of movement of the picture of corresponding virtual image as unit of on image-forming component by the pixel size of image-forming component.For example, by virtual
Image moves the pixel of 2 virtual images in a first direction, corresponding empty in the pixel of mobile 3 virtual images of second direction
The amount of movement of picture first direction on image-forming component of quasi- image is 2*Sx, and the amount of movement of second direction is 3*Sy.
As an example, 3 concrete configuration of position determination module to be moved are as follows: by Plr-x/Phr-xIt rounds up
After obtain integer value Rx；By Plr-y/Phr-yInteger value Ry is obtained after being rounded up；It is original with the initial position of virtual image
Point establishes coordinate system using the first direction and second direction as reference axis, in any one coordinate into quadrant, along described
A first straight line vertical with the first direction, edge are drawn at each rounded coordinate of the first direction apart from origin [0-Rx]
Describe one vertical with the second direction second at each rounded coordinate of the second direction apart from origin [0-Ry]
All intersection positions of straight line, the first straight line and the second straight line are the position to be moved of the virtual image, then
Position to be moved has (1+Rx) * (1+Ry) a, and in example as shown in Figure 8, Rx is equal to the intersection point that 4, Ry is equal to dotted line in 4, Fig. 8,
Position namely where black triangle is exactly that virtual image needs mobile whole positions, due to horizontal direction and vertically
The pixel size in direction is not related, so the value of Rx and Ry can not also be identical.Corresponding, Fig. 9 shows Rx equal to 4, Ry
In the case where 4, virtual image is mobile by step-length of the pixel size of 1 virtual image with vertical direction in the horizontal direction,
Amount of movement of the picture of corresponding virtual image as unit of on image-forming component by the pixel size of image-forming component.
As an example, described image retrieval module 4 is additionally configured to through control test image in micro-display
On movement be moved to each position to be moved to control the virtual image, therefore the embodiment of the present invention is swept without machinery
It retouches, only obtains multiple image by controlling to correspond on image-forming component under the movement of test image on the microdisplay, and carry out figure
As recombination, the picture of virtual image to be measured can be with high fidelity acquired.Figure 10 (a) shows virtual image in one embodiment
Moving process, the picture that Figure 10 (b) shows corresponding virtual image on image-forming component correspond to the moving process of Figure 10 (a).It needs
It is noted that the specific movement routine of virtual image is unlimited, for example, can along row scanning or along column scan, such as Figure 11 (a) and
Shown in Figure 11 (b), as long as finally traversing all positions to be moved.
Described image retrieval module 4 includes rate of travel acquiring unit, and the rate of travel acquiring unit is matched
It is set to: obtaining in image-forming component image sequence each adjacent two image-forming component image corresponding virtual image in a first direction
First movement amount, and the second amount of movement in a second direction；According to the first movement amount, the second amount of movement and formula
(1) it is obtained in the image-forming component image sequence between each adjacent two image-forming component image in a first direction with formula (2)
First rate of travel, and the second rate of travel in a second direction.By above-mentioned calculating process it is found that per adjacent two
Rate of travel between a image-forming component image is less than the amount of movement of image-forming component pixel size.
As an example, described image recombination module 5 carries out image reorganization using Super-Resolution Image Reconstruction, obtains
To the picture of the high-fidelity of virtual image to be measured.Existing measuring device can be used to realize, i.e., in the image-forming component image sequence
Just resolution ratio is lower, and described device obtains the image-forming component image sequence of low resolution through the embodiment of the present invention, then using super
Image in different resolution restructing algorithm progress image reorganization also can get the picture of the virtual image to be measured of high-fidelity, effect picture such as Figure 12
(a), it shown in Figure 12 (b) and Figure 12 (c), is shown by detecting the quality of picture of the virtual image to be measured to detect corresponding nearly eye
Equipment.
The embodiment of the present invention also provides a kind of controller comprising memory and processor, the memory are stored with meter
The step of calculation machine program, described program can be realized the measurement method of the near-eye display when being executed by the processor.
The embodiment of the present invention also provides a kind of computer readable storage medium, for storing computer program, described program
The step of realizing the measurement method of the near-eye display when by a computer or processor execution.
The embodiment of the invention also provides a kind of measuring systems of near-eye display, including measurement component and nearly eye to show
Device, wherein the measurement component includes preposition aperture, photographic film, image-forming component and controller；The near-eye display is in institute
It states and forms image on image-forming component；The controller includes memory and processor, and the memory is stored with computer program,
The step of described program can be realized the measurement method of the near-eye display when being executed by the processor.
As an example, the measuring system of the near-eye display can be applied to following scene: the image-forming component
Field angle is greater than the field angle of the near-eye display, and the resolution ratio of the image-forming component is lower than point of the near-eye display
Resolution.
The embodiment of the present invention by enhancing near-eye display test macro resolution ratio, can directly adopt low resolution at
Element acquires image, and the picture of the virtual image of the near-eye display of high-fidelity is rebuild using several low-resolution images.It is logical
It crosses using the relationship between virtual image and the pixel of image-forming component, piece image and this mobile width is shown on virtual image
Image, as soon as being often moved to the image of a position image-forming component acquisition width low resolution, such image-forming component has obtained more
Width low-resolution image, and there is the movement less than an image-forming component pixel size between the image of these low resolution
Amount.Compared to traditional super-resolution method, the Mechanical Moving equipment that the embodiment of the present invention does not need precision is obtained with can
The amount of movement of control.
Cost is relatively low for the embodiment of the present invention, still can cooperate Super-resolution reconstruction with existing low resolution test macro
It builds to obtain the picture of the virtual image of high-fidelity；Scan image on the microdisplay does not need accurate mechanical device to move
Image-forming component or entire test macro；By calibration phase, we can be obtained by accurate amount of movement, so computationally
More effectively, accuracy is high.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, according to the technical essence of the invention
Any simple modification, equivalent change and modification to the above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (18)
1. a kind of measurement method of near-eye display characterized by comprising
Obtain the pixel ratio of image-forming component and virtual image；
The amount of movement ratio of virtual image imaging and virtual image on image-forming component is obtained according to the pixel ratio；
According to the position to be moved of the pixel ratio and amount of movement ratio-dependent virtual image；
It controls the virtual image and is moved to each position to be moved, corresponding acquisition is each described wait move on image-forming component
The dynamic corresponding image-forming component image in position, obtains image-forming component image sequence, and obtains every in the image-forming component image sequence
Rate of travel between two neighboring image-forming component image；
Image is carried out based on the rate of travel between the image-forming component image sequence and two neighboring image-forming component image
Recombination, obtains the picture of virtual image to be measured.
2. the measurement method of near-eye display according to claim 1, which is characterized in that
The pixel ratio for obtaining image-forming component and virtual image, comprising:
Two pixels are lighted along virtual image first direction, position coordinates in a first direction are respectively A and B, and distance is (B-
A)*Phr-x, wherein B > A, Phr-xIndicate the pixel size of virtual image in a first direction；
It is corresponding on image-forming component to obtain the corresponding picture of two pixels lighted along virtual image first direction, it is being imaged
The position coordinates of first direction on element are respectively a and b, and distance is (b-a) * Plr-x, wherein b > a, Plr-xIt is expressed as pixel
The pixel size of part in a first direction；
According to (B-A) * Phr-x=(b-a) * Plr-x, can obtain on first direction between image-forming component and virtual image pixel size
Ratio Plr-x/Phr-x=(B-A)/(b-a)；
The ratio P in second direction between image-forming component and virtual image pixel size is obtained with above-mentioned stepslr-y/Phr-y=(D-
C)/(d-c), wherein Plr-yIndicate pixel size of the image-forming component in second direction, Phr-yIndicate virtual image in second direction
Pixel size, D, C indicate that the position coordinates of two pixels lighted along virtual image second direction, D > C, d, c indicate edge
The position coordinates of second direction of the corresponding picture of two pixels that virtual image second direction is lighted on image-forming component, d >
C, the second direction and the first direction are perpendicular.
3. the measurement method of near-eye display according to claim 2, which is characterized in that
It is described that the virtual image amount of movement of imaging and virtual image ratio on image-forming component is obtained according to the pixel ratio
Example, comprising:
Virtual image moves the pixel of 1 virtual image in a first direction, and the picture of corresponding virtual image is at pixel
The pixel of mobile Sx image-forming component on part,
Sx=Phr-x/Plr-x=(b-a)/(B-A) (1)；
Virtual image moves the pixel of 1 virtual image in a second direction, and the picture of corresponding virtual image is at pixel
The pixel of mobile Sy image-forming component on part,
Sy=Phr-y/Plr-y=(d-c)/(D-C) (2).
4. the measurement method of near-eye display according to claim 3, which is characterized in that
According to the position to be moved of the pixel ratio and amount of movement ratio-dependent virtual image, comprising:
By Plr-x/Phr-xInteger value Rx is obtained after being rounded up；
By Plr-y/Phr-yInteger value Ry is obtained after being rounded up；
Using the initial position of virtual image as origin, coordinate system is established using the first direction and second direction as reference axis,
Any one coordinate into quadrant, along at each rounded coordinate of the first direction apart from origin [0-Rx] draw one with
The vertical first straight line of the first direction is described along at each rounded coordinate of the second direction apart from origin [0-Ry]
All intersection positions of one second straight line vertical with the second direction, the first straight line and the second straight line are
The position to be moved of the virtual image.
5. the measurement method of near-eye display according to claim 4, which is characterized in that
The rate of travel obtained in the image-forming component image sequence between each adjacent two image-forming component image, packet
It includes:
Obtain in image-forming component image sequence each adjacent two image-forming component image corresponding virtual image in a first direction
First movement amount, and the second amount of movement in a second direction；
The image-forming component image sequence is obtained according to the first movement amount, the second amount of movement and formula (1) and formula (2)
First rate of travel in a first direction between middle each adjacent two image-forming component image, and in a second direction second
Rate of travel.
6. the measurement method of near-eye display according to claim 1, which is characterized in that
The rate of travel based between the image-forming component image sequence and two neighboring image-forming component image carries out
Image reorganization obtains the picture of virtual image to be measured, comprising:
Based on the rate of travel between the image-forming component image sequence and two neighboring image-forming component image, using oversubscription
Resolution image reconstruction algorithm carries out image reorganization, obtains the picture of virtual image to be measured.
7. the measurement method of near-eye display described in any one of -6 according to claim 1, which is characterized in that
The method also includes: it is moved to by the movement of control test image on the microdisplay to control the virtual image
Each position to be moved.
8. a kind of measuring device of near-eye display characterized by comprising
Pixel ratio obtains module, is configured to obtain the pixel ratio of image-forming component and virtual image；
Amount of movement ratio obtains module, is configured to obtain virtual image imaging on image-forming component according to the pixel ratio
With the amount of movement ratio of virtual image；
Position determination module to be moved is configured to according to the to be moved of the pixel ratio and amount of movement ratio-dependent virtual image
Position；
Image sequence obtains module, is configured to control the virtual image and is moved to each position to be moved, at pixel
The corresponding image-forming component image in each position to be moved of corresponding acquisition, obtains image-forming component image sequence, and obtain on part
Rate of travel in the image-forming component image sequence between each adjacent two image-forming component image；
Image reorganization module is configured between the image-forming component image sequence and two neighboring image-forming component image
Rate of travel carries out image reorganization, obtains the picture of virtual image to be measured.
9. the measuring device of near-eye display according to claim 8, which is characterized in that
It includes the first pixel ratio acquiring unit and the second pixel ratio acquiring unit that the pixel ratio, which obtains module, wherein
The first pixel ratio acquiring unit is configured that
Two pixels are lighted along virtual image first direction, position coordinates in a first direction are respectively A and B, and distance is (B-
A)*Phr-x, wherein B > A, Phr-xIndicate the pixel size of virtual image in a first direction；
It is corresponding on image-forming component to obtain the corresponding picture of two pixels lighted along virtual image first direction, it is being imaged
The position coordinates of first direction on element are respectively a and b, and distance is (b-a) * Plr-x, wherein b > a, Plr-xIt is expressed as pixel
The pixel size of part in a first direction；
According to (B-A) * Phr-x=(b-a) * Plr-x, can obtain on first direction between image-forming component and virtual image pixel size
Ratio Plr-x/Phr-x=(B-A)/(b-a)；
The second pixel ratio acquiring unit is configured that
Execution step with the first pixel ratio acquiring unit obtains image-forming component and virtual image pixel in second direction
Ratio P between sizelr-y/Phr-y=(D-C)/(d-c), wherein Plr-yIndicate that image-forming component is big in the pixel of second direction
It is small, Phr-yVirtual image is indicated in the pixel size of second direction, D, C indicate two pictures lighted along virtual image second direction
The position coordinates of vegetarian refreshments, D > C, d, c indicate the corresponding picture of two pixels lighted along virtual image second direction at pixel
The position coordinates of second direction on part, d > c, the second direction and the first direction are perpendicular.
10. the measuring device of near-eye display according to claim 9, which is characterized in that
It includes first movement amount ratio acquisition unit and the second amount of movement ratio acquisition unit that the amount of movement ratio, which obtains module,
Wherein,
The first movement amount ratio acquisition unit is configured that
Virtual image moves the pixel of 1 virtual image in a first direction, and the picture of corresponding virtual image is at pixel
The pixel of mobile Sx image-forming component on part,
Sx=Phr-x/Plr-x=(b-a)/(B-A) (1)；
The second amount of movement ratio acquisition unit is configured that
Virtual image moves the pixel of 1 virtual image in a second direction, and the picture of corresponding virtual image is at pixel
The pixel of mobile Sy image-forming component on part,
Sy=Phr-y/Plr-y=(d-c)/(D-C) (2).
11. the measuring device of near-eye display according to claim 10, which is characterized in that
The position determination module concrete configuration to be moved are as follows:
By Plr-x/Phr-xInteger value Rx is obtained after being rounded up；
By Plr-y/Phr-yInteger value Ry is obtained after being rounded up；
Using the initial position of virtual image as origin, coordinate system is established using the first direction and second direction as reference axis,
Any one coordinate into quadrant, along at each rounded coordinate of the first direction apart from origin [0-Rx] draw one with
The vertical first straight line of the first direction is described along at each rounded coordinate of the second direction apart from origin [0-Ry]
All intersection positions of one second straight line vertical with the second direction, the first straight line and the second straight line are
The position to be moved of the virtual image.
12. the measuring device of near-eye display according to claim 11, which is characterized in that
Described image retrieval module includes rate of travel acquiring unit, and the rate of travel acquiring unit is configured that
Obtain in image-forming component image sequence each adjacent two image-forming component image corresponding virtual image in a first direction
First movement amount, and the second amount of movement in a second direction；
The image-forming component image sequence is obtained according to the first movement amount, the second amount of movement and formula (1) and formula (2)
First rate of travel in a first direction between middle each adjacent two image-forming component image, and in a second direction second
Rate of travel.
13. the measuring device of near-eye display according to claim 8, which is characterized in that
Described image recombination module carries out image reorganization using Super-Resolution Image Reconstruction, obtains virtual image to be measured
Picture.
14. the measuring device of the near-eye display according to any one of claim 8-13, which is characterized in that
Described image retrieval module is additionally configured to described to control by the movement of control test image on the microdisplay
Virtual image is moved to each position to be moved.
15. a kind of controller comprising memory and processor, which is characterized in that the memory is stored with computer program,
Described program can be realized method described in any one of claim 1 to 7 claim when being executed by the processor
The step of.
16. a kind of computer readable storage medium, for storing computer program, which is characterized in that described program is by a meter
The step of calculation machine or processor realize the method as described in any one of claim 1 to 7 claim when executing.
17. a kind of measuring system of near-eye display characterized by comprising
Component is measured, the measurement component includes preposition aperture, photographic film, image-forming component and controller,
Near-eye display, the near-eye display form image on the image-forming component；
The controller includes memory and processor, and the memory is stored with computer program, and described program is described
The step of processor can be realized method described in any one of claim 1 to 7 claim when executing.
18. the measuring system of near-eye display according to claim 17, which is characterized in that
The field angle of the image-forming component is greater than the field angle of the near-eye display, and the resolution ratio of the image-forming component is lower than
The resolution ratio of the near-eye display.
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