CN111629197B - Method, apparatus, controller and medium for improving resolution of light field near-eye display - Google Patents
Method, apparatus, controller and medium for improving resolution of light field near-eye display Download PDFInfo
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Abstract
The invention relates to a method and a device for improving the resolution ratio of a light field near-eye display, a controller and a medium, wherein the light field near-eye display comprises a first light controller and a second light controller which are arranged face to face; and displaying the target image. The invention can improve the resolution of the near-to-eye display of the light field, thereby improving the user experience.
Description
Technical Field
The invention relates to the technical field of near-eye displays, in particular to a method and a device for improving the resolution of a light field near-eye display, a controller and a medium.
Background
At different points in the real world, the human eye perceives 3D information from a plurality of depth stimuli, in which parallax causes the eyeball to move in a convergent manner, so that the image of the object is projected in the central area of the retinas of both eyes, which is called vergence, for different opening angles of the eyes. Looking at a near object, the parallax is small so the eyes are close to each other, while looking at a far object, the parallax increases and the eyes are far away from each other. In another aspect, each eye adjusts its own individual volume individually to the depth at which the eye focuses, a process known as accommodation. When the distance of the target changes, the eye changes the focal length to keep the image sharp. In the real 3D world, the above-mentioned two sets of eye movements are closely linked, and a change in distance will automatically lead to convergence and accommodation, a process known as convergence-accommodation feedback. There is a feedback loop between convergence and accommodation.
In a conventional near-eye display, since virtual images of the left and right eyes are focused at a fixed distance, and the field angles of all points to the eyes are the same, the field angle determines the distance of the virtual images, that is, only one virtual image distance exists, so that an image presented by a common near-eye display is different from that observed in reality, and a 3D effect cannot be presented. And the light field near-eye display supports the adjustment of the focal length of human eyes, so that the human eyes can focus at near or far, and 3D experience is brought to a user. Two important indexs of light field near-eye display are spatial resolution and angular resolution, but these two indexs are difficult to weigh down, when spatial resolution sets up when higher, can lead to angular resolution low, influence the 3D effect, and when angular resolution sets up when higher, the diffraction phenomenon appears easily, lead to spatial resolution low, all can cause light field near-eye display resolution low like this, consequently, how weigh two indexs of light field near-eye display and be spatial resolution and angular resolution, improve the resolution that improves light field near-eye display and become the technical problem who awaits the solution urgently.
Disclosure of Invention
The invention aims to provide a method and a device for improving the resolution of a light field near-eye display, a controller and a medium, which can improve the resolution of near-eye display so as to improve user experience.
According to a first embodiment of the invention, there is provided a method of improving resolution of a light field near-eye display comprising first and second light controllers arranged face-to-face, the method comprising:
continuously changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a plurality of images, transmitting the plurality of images, and synthesizing to generate a target image;
and displaying the target image.
Further, the continuously changing the relative position of the light between the first light controller and the second light controller according to the preset movement amount, collecting a plurality of images, transmitting the plurality of images, and synthesizing to generate a target image includes:
continuously changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a plurality of images, transmitting the plurality of images, synthesizing at least two images in the plurality of images, synthesizing the generated synthesized image and at least two images in the plurality of images, and generating the target image.
Further, the continuously changing the relative position of the light between the first light controller and the second light controller according to the preset movement amount, acquiring a plurality of images, transmitting and synthesizing the plurality of images, and in the process of generating the target image, specifically transmitting and synthesizing the plurality of images in a time division multiplexing manner to generate the target image, includes:
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, and collecting and transmitting a first image;
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a second image, transmitting the second image, synthesizing the first image and the second image, and generating a first synthesized image;
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a third image, transmitting the third image, and synthesizing the third image and the first synthesized image to generate a second synthesized image;
……
and changing the relative position of light rays between the first light controller and the second light controller according to a preset movement amount, collecting an Mth image, transmitting the Mth image, synthesizing the third image and an M-2 composite image, and generating an M-1 composite image, wherein M is a positive integer greater than or equal to 2.
Further, the changing the relative position of the light ray between the first light controller and the second light controller according to the preset movement amount includes:
moving the first light controller or the second light controller according to a preset movement amount control, thereby changing a relative position of light between the first light controller and the second light controller.
Further, the changing the relative position of the light ray between the first light controller and the second light controller according to the preset movement amount includes:
and a rotatable light ray adjuster is arranged between the first light controller and the second light controller, and the light ray adjuster changes the relative position of light rays between the first light controller and the second light controller through rotation.
Further, the first light controller and the second light controller are both LCDs, the pixels of the second light controller are larger than the pixels of the first light controller, and the preset movement amount is smaller than the pixels of the first light controller and the second light controller.
According to a second embodiment of the invention, there is provided an apparatus for improving the resolution of a light field near-eye display comprising a first light controller and a second light controller arranged face-to-face, the apparatus comprising:
a target image generation module configured to continuously change a relative position of light between the first light controller and the second light controller according to a preset movement amount, collect a plurality of images, transmit and synthesize the plurality of images, and generate a target image;
a target image display module configured to display the target image.
Further, the target image generation module is further configured to:
continuously changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a plurality of images, transmitting the plurality of images, synthesizing at least two images of the plurality of images, synthesizing the generated synthesized image and at least two images of the plurality of images, and generating the target image.
Further, the target generating module is further configured to transmit and synthesize the plurality of images in a time division multiplexing manner, and generate a target image, including:
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, and collecting and transmitting a first image;
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a second image, transmitting the second image, synthesizing the first image and the second image, and generating a first synthesized image;
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a third image, transmitting the third image, synthesizing the third image and the first synthesized image to generate a second synthesized image;
……
and changing the relative position of light rays between the first light controller and the second light controller according to a preset movement amount, collecting an Mth image, transmitting the Mth image, synthesizing the third image and an M-2 composite image, and generating an M-1 composite image, wherein M is a positive integer greater than or equal to 2.
Further, the object generation module includes a movement control unit configured to move the first light controller or the second light controller according to a preset movement amount control, thereby changing a relative position of the light between the first light controller and the second light controller.
Further, the object generating module comprises a rotatable light adjuster arranged between the first light controller and the second light controller, and the light adjuster changes the relative position of light between the first light controller and the second light controller through rotation.
Further, the first light controller and the second light controller are both LCDs, the pixels of the second light controller are larger than the pixels of the first light controller, and the preset movement amount is smaller than the pixels of the first light controller and the second light controller.
According to a third embodiment of the invention, a controller is provided comprising a memory and a processor, the memory storing a computer program enabling the implementation of the steps of the method when the program is executed by the processor.
According to a fourth embodiment of the invention, a computer-readable storage medium is provided for storing a computer program, which when executed by a computer or processor performs the steps of the method.
Compared with the prior art, the invention has obvious advantages and beneficial effects. By means of the technical scheme, the method, the device, the controller and the medium for improving the resolution ratio of the light field near-eye display can achieve considerable technical progress and practicability, have wide industrial utilization value and at least have the following advantages:
the embodiment of the invention can realize the effect of simultaneously increasing the spatial resolution and the angular resolution, and improve the near-to-eye display resolution of the light field, thereby improving the user experience.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are specifically described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a flow chart of a method for increasing resolution of a light field near-eye display;
FIG. 2 is a schematic diagram of a first light controller and a second light controller of a light field near-eye display arrangement;
FIG. 3 is a schematic diagram of an apparatus for improving the resolution of a light field near-eye display;
FIG. 4(a) is a schematic diagram of an ideal 2D slice of a 4D light field signal;
FIG. 4(b) is a schematic 2D slice of the 4D light field signal when the second light controller 2 pixels are small;
FIG. 4(c) is a schematic 2D slice of the 4D light field signal when the second light controller 2 pixels are large;
FIG. 4(D) is a schematic diagram of a 2D slice of a 4D light-field signal obtained by an embodiment of the present invention;
FIG. 5(a) is a partially enlarged schematic view of FIG. 4 (a);
FIG. 5(b) is a partially enlarged schematic view of FIG. 4 (b);
FIG. 5(c) is a partially enlarged view of FIG. 4 (c);
fig. 5(d) is a partially enlarged schematic view of fig. 4 (d).
[ description of symbols ]
1: the first light controller 2: second light controller
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments and effects of the method, the apparatus, the controller and the medium for improving the resolution of the light field near-eye display according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
An embodiment of the present invention provides a method for improving resolution of a light field near-eye display, as shown in fig. 1, where the light field near-eye display includes a first light controller 1 and a second light controller 2 that are disposed face to face, as shown in fig. 2, where the method includes:
step S1, continuously changing the relative position of the light between the first light controller 1 and the second light controller 2 according to the preset movement amount, collecting a plurality of images, transmitting the plurality of images and synthesizing to generate a target image;
and step S2, displaying the target image.
The main requirement indexes of the near-eye display are spatial resolution and angular resolution, the method provided by the embodiment of the invention can solve the problem of balance between the spatial resolution and the angular resolution, can realize the effect of simultaneously increasing the spatial resolution and the angular resolution, and improves the near-eye display resolution, thereby improving the user experience.
As an example, the step S1 includes:
step S11, continuously changing a relative position of light between the first light controller 1 and the second light controller 2 according to a preset movement amount, acquiring a plurality of images, transmitting the plurality of images, synthesizing at least two images of the plurality of images, synthesizing the generated synthesized image and at least two images of the plurality of images, and generating the target image.
As an example, in step S1, the transmitting and combining the multiple images in a time-division multiplexing manner to generate the target image may specifically include:
s101, changing the relative position of light between the first light controller 1 and the second light controller 2 according to a preset movement amount, and collecting and transmitting a first image;
step S102, changing the relative position of light between the first light controller 1 and the second light controller 2 according to a preset movement amount, collecting a second image, transmitting the second image, synthesizing the first image and the second image, and generating a first synthesized image;
step S103, changing the relative position of light between the first light controller 1 and the second light controller 2 according to a preset movement amount, collecting a third image, transmitting the third image, synthesizing the third image and the first synthesized image, and generating a second synthesized image;
……
step S104, changing the relative position of the light between the first light controller 1 and the second light controller 2 according to a preset movement amount, collecting an Mth image, transmitting the Mth image, synthesizing the third image and an M-2 synthesized image, and generating an M-1 synthesized image, wherein M is a positive integer greater than or equal to 2.
As an example, the step S1 of changing the relative position of the light between the first light controller 1 and the second light controller 2 according to the preset movement amount includes:
step S111, moving the first light controller 1 or the second light controller 2 according to a preset movement amount control, thereby changing a relative position of light between the first light controller 1 and the second light controller 2.
As another example, the changing of the relative position of the light rays between the first light controller 1 and the second light controller 2 according to the preset moving amount in step S1 includes:
step S121, a rotatable light adjuster is disposed between the first light controller 1 and the second light controller 2, and the light adjuster changes the relative position of light between the first light controller 1 and the second light controller 2 by rotating. Wherein the light adjuster may be a PC board.
As an example, the first light controller 1 and the second light controller 2 are both LCDs, the second light controller 2 is located between the human eye of the person wearing the near-eye display and the first light controller 1, the pixels of the second light controller 2 are larger than the pixels of the first light controller 1, and the preset movement amount is smaller than the pixels of the first light controller 1 and the second light controller 2. Can guarantee like this that second light controller 2 has great pixel, avoid appearing the diffraction phenomenon, increase spatial resolution, nevertheless can reduce angular resolution, and through changing light relative position between first light controller 1 and the second light controller 2 can set up great pixel to second light controller 2 and compensate to increase angular resolution, guarantee to realize 3D's effect, solve the trade-off problem between spatial resolution and the angular resolution, can realize increasing spatial resolution and angular resolution's effect simultaneously, improved the near-to-eye display resolution in light field, thereby promote user experience.
The embodiment of the present invention further provides a device for improving the resolution of a light field near-eye display, where the light field near-eye display includes a first light controller 1 and a second light controller 2 that are arranged face to face, as shown in fig. 2, the device includes a target image generation module and a target image display module, as shown in fig. 3, the target image generation module is configured to continuously change the relative position of light between the first light controller 1 and the second light controller 2 according to a preset movement amount, collect a plurality of images, transmit and combine the plurality of images, and generate a target image; target image display module the target image display module is configured to display the target image.
As an example, the target image generation module is further configured to: continuously changing the relative position of light between the first light controller 1 and the second light controller 2 according to a preset movement amount, collecting a plurality of images, transmitting the plurality of images, synthesizing at least two images of the plurality of images, synthesizing the generated synthesized image and at least two images of the plurality of images, and generating the target image.
As an example, the target generating module is further configured to transmit and synthesize the multiple images in a time division multiplexing manner, and generate the target image, including:
changing the relative position of light between the first light controller 1 and the second light controller 2 according to a preset movement amount, and collecting and transmitting a first image;
changing the relative position of light between the first light controller 1 and the second light controller 2 according to a preset movement amount, collecting a second image, transmitting the second image, and synthesizing the first image and the second image to generate a first synthesized image;
changing the relative position of light between the first light controller 1 and the second light controller 2 according to a preset movement amount, collecting a third image, transmitting the third image, synthesizing the third image and the first synthesized image, and generating a second synthesized image;
……
changing the relative position of light rays between the first light controller 1 and the second light controller 2 according to a preset movement amount, collecting an Mth image, transmitting the Mth image, synthesizing the third image and an M-2 composite image, and generating an M-1 composite image, wherein M is a positive integer greater than or equal to 2.
As an example, the object generation module includes a movement control unit configured to move the first light controller 1 or the second light controller 2 according to a preset movement amount control, thereby changing a relative position of the light between the first light controller 1 and the second light controller 2.
As another example, the object generating module includes a rotatable light adjuster disposed between the first light controller 1 and the second light controller 2, and the light adjuster changes a relative position of light between the first light controller 1 and the second light controller 2 by rotating.
As an example, the first light controller 1 and the second light controller 2 are both LCDs, the second light controller 2 is located between the human eye of the person wearing the near-eye display and the first light controller 1, the pixels of the second light controller 2 are larger than the pixels of the first light controller 1, and the preset movement amount is smaller than the pixels of the first light controller 1 and the second light controller 2. Therefore, the second light controller 2 can be ensured to have larger pixels, the diffraction phenomenon is avoided, meanwhile, a plurality of images are collected and synthesized to generate a target image by changing the relative position of light rays between the first light controller 1 and the second light controller 2, and the user can be ensured to see a 3D effect.
The following is illustrated by means of a 4D light field signal imaging, as illustrated by way of example in fig. 4. Fig. 4(a) is a schematic diagram of an ideal 2D slice of a 4D lightfield signal, with the horizontal direction representing spatial resolution in the X-direction and the vertical direction representing angular resolution in the X-direction, but it will be understood that a complete 4D lightfield includes spatial resolution and angular resolution in the X-direction, and spatial resolution and angular resolution in the Y-direction. Fig. 4(b) shows the case where the second light controller 2 has smaller pixels, and as can be seen from the circled part of the box in the figure, the longitudinal direction is close to the ideal image, which ensures that the angular resolution is higher, but the lateral direction has some features missing and the spatial resolution is lower. Fig. 4(c) shows the case where the second light controller 2 has a large pixel, and it can be seen in the encircled portion of the box in the figure that the lateral feature is not lost and the angular resolution is ensured, but jaggy is present in the longitudinal direction, that is, the angular resolution is low, as compared with the ideal image. Therefore, the traditional method can not compromise the spatial resolution or the angular resolution. Fig. 4(d) adopts the solution of the embodiment of the present invention, in which the relative position of the light between the first light controller 1 and the second light controller 2 is adjusted 4 times, and it can be known from the patterns in the blocks that fig. 5(a), fig. 5(b), fig. 5(c), and fig. 5(d) respectively show the corresponding partial block enlarged schematic diagrams in fig. 4(a), fig. 4(b), fig. 4(c), and fig. 4(d) for comparison. The images presented in fig. 4(d) and 5(d) are very close to the ideal image, ensuring both spatial and angular resolution.
The method and the device provided by the embodiment of the invention can realize the effect of simultaneously increasing the spatial resolution and the angular resolution, and improve the near-to-eye display resolution of the light field, thereby improving the user experience.
Embodiments of the present invention further provide a controller, which includes a memory and a processor, where the memory stores a computer program, and the program, when executed by the processor, can implement the step of improving the resolution of the light field near-eye display.
Embodiments of the present invention also provide a computer-readable storage medium for storing a computer program, which when executed by a computer or processor, performs the step of increasing the resolution of a light-field near-eye display.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (12)
1. A method of increasing the resolution of a light field near-eye display,
the light field near-eye display comprising a first light controller and a second light controller disposed face-to-face, the method comprising:
continuously changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a plurality of images, transmitting the plurality of images, and synthesizing to generate a target image;
displaying the target image;
wherein the pixels of the second light controller are larger than the pixels of the first light controller;
the method for generating the target image includes the steps of continuously changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a plurality of images, transmitting and synthesizing the plurality of images, and in the process of generating the target image, specifically transmitting and synthesizing the plurality of images in a time division multiplexing mode to generate the target image, and includes the following steps:
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, and collecting and transmitting a first image;
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a second image, transmitting the second image, and synthesizing the first image and the second image to generate a first synthesized image;
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a third image, transmitting the third image, and synthesizing the third image and the first synthesized image to generate a second synthesized image;
by the way of analogy, the method can be used,
and changing the relative position of light rays between the first light controller and the second light controller according to a preset movement amount, collecting and transmitting an Mth image, and synthesizing the Mth image and an M-2 composite image to generate an M-1 composite image, wherein M is a positive integer greater than or equal to 2.
2. The method of improving light field near-eye display resolution of claim 1,
the continuously changing the relative position of light between the first light controller and the second light controller according to the preset movement amount, collecting a plurality of images, transmitting the plurality of images, synthesizing, and generating a target image includes:
continuously changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a plurality of images, transmitting the plurality of images, synthesizing at least two images in the plurality of images, synthesizing the generated synthesized image and at least two images in the plurality of images, and generating the target image.
3. The method for improving resolution of a light field near-eye display of claim 1,
the changing of the relative position of the light rays between the first light controller and the second light controller according to the preset movement amount includes:
moving the first light controller or the second light controller according to a preset movement amount control, thereby changing a relative position of light between the first light controller and the second light controller.
4. The method for improving resolution of a light field near-eye display of claim 1,
the changing of the relative position of the light rays between the first light controller and the second light controller according to the preset movement amount includes:
and a rotatable light ray adjuster is arranged between the first light controller and the second light controller, and the light ray adjuster changes the relative position of light rays between the first light controller and the second light controller through rotation.
5. A method of improving the resolution of a light field near-eye display according to any one of claims 1-4,
the first light controller and the second light controller are both LCDs, and the preset movement amount is smaller than pixels of the first light controller and the second light controller.
6. An apparatus for increasing the resolution of a light field near-eye display,
the light field near-eye display includes a first light controller and a second light controller disposed face-to-face, the apparatus comprising:
the target image generation module is configured to continuously change the relative position of light between the first light controller and the second light controller according to a preset movement amount, acquire a plurality of images, transmit the plurality of images and synthesize the images to generate a target image;
a target image display module configured to display the target image;
wherein the pixels of the second light controller are larger than the pixels of the first light controller;
the target image generation module is further configured to transmit and synthesize the plurality of images in a time division multiplexing manner, and generate a target image, including:
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, and collecting and transmitting a first image;
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a second image, transmitting the second image, and synthesizing the first image and the second image to generate a first synthesized image;
changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a third image, transmitting the third image, and synthesizing the third image and the first synthesized image to generate a second synthesized image;
by the way of analogy, the method can be used,
changing the relative position of light rays between the first light controller and the second light controller according to a preset movement amount, collecting an Mth image, transmitting the Mth image, synthesizing the Mth image and an M-2 synthesized image, and generating an M-1 synthesized image, wherein M is a positive integer greater than or equal to 2.
7. The apparatus for improving light field near-eye display resolution according to claim 6,
the target image generation module is further configured to:
continuously changing the relative position of light between the first light controller and the second light controller according to a preset movement amount, collecting a plurality of images, transmitting the plurality of images, synthesizing at least two images in the plurality of images, synthesizing the generated synthesized image and at least two images in the plurality of images, and generating the target image.
8. The apparatus for improving light field near-eye display resolution according to claim 6,
the object generation module includes a movement control unit configured to move the first light controller or the second light controller according to a preset movement amount control, thereby changing a relative position of light between the first light controller and the second light controller.
9. The apparatus for improving resolution of a light field near-eye display of claim 6,
the target generation module comprises a rotatable light adjuster which is arranged between the first light controller and the second light controller, and the light adjuster changes the relative position of light between the first light controller and the second light controller through rotation.
10. An apparatus for improving the resolution of a light field near-eye display according to any of claims 6-9,
the first light controller and the second light controller are both LCDs, and the preset movement amount is smaller than pixels of the first light controller and the second light controller.
11. A controller comprising a memory and a processor, characterized in that the memory stores a computer program which, when executed by the processor, is capable of carrying out the steps of the method of any one of claims 1 to 5.
12. A computer-readable storage medium for storing a computer program, characterized in that the program realizes the steps of the method according to any one of claims 1 to 5 when executed by a computer or processor.
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| CN111629197B true CN111629197B (en) | 2022-07-26 |
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