KR100860611B1 - System for providing three-dimensional integral imaging using multi-layered display device - Google Patents

Abstract

The present invention relates to a stereoscopic imaging system using a multilayer display device.

The stereoscopic imaging system configures a multi-layered image display unit in a form including a plurality of display elements each displaying a base image which is arranged in order on the same central axis. A base image for reproducing a stereoscopic image is generated through an image processor, and provided to each display element of the multilayer image display unit. Accordingly, each of the display elements displays respective basic images applied from the image processor, and the lens array displays the basic images displayed in this way in different center depth planes, where the center depth planes are the focal points of the images displayed by the corresponding display elements. A region included in the set distance is represented based on the position of consolidation, and the image is formed on the image to generate a stereoscopic image.

That is, by implementing a plurality of different depth planes at the same time by using a plurality of display elements configured as a multilayer image display unit, a sense of depth that can be expressed in a stereoscopic image can be improved.

Stereoscopic image, multilayer display elements, lens array, center depth plane

Description

Stereoscopic image system using multi-layer display device {SYSTEM FOR PROVIDING THREE-DIMENSIONAL INTEGRAL IMAGING USING MULTI-LAYERED DISPLAY DEVICE}

FIG. 1 is a diagram illustrating a comparison between actual InIm and virtual InIm, which are two display methods of InIm.

2 is a block diagram illustrating a structure of a stereoscopic image system according to an exemplary embodiment of the present invention.

3A and 3B are structural diagrams illustrating an imaging system according to a first embodiment of the present invention.

4 is a structural diagram illustrating a stereoscopic image system according to a second embodiment of the present invention.

5 is a structural diagram illustrating a stereoscopic image system according to a third embodiment of the present invention.

The present invention relates to a stereoscopic imaging system, and more particularly, to a stereoscopic imaging system in which a sense of depth is improved by using a multilayer display device.

The integrated imaging (lens integration or imaging) method using a lens array among conventional techniques for implementing stereoscopic images has been gradually improved since it was first proposed by Lippmann in 1908. However, due to the limitations of the imaging device and the display device technology, it has not received much attention in recent years, and the recent research has been actively conducted with the development of the high resolution imaging device and the high resolution display device.

In the conventional stereoscopic image display apparatus using the II method, the photographed image is reproduced as a 3D image using a predetermined lens array, or a 3D image is reproduced based on a basic image made of computer graphics.

However, the biggest disadvantage of the stereoscopic image display device using the conventional II method is that the existing II can display only 3D images and not 2D images.

The system using the II system is largely composed of a photographing unit and a display unit. The photographing unit stores a basic image in various directions of the three-dimensional object generated by the basic lenses constituting the lens array, in the photographing element. As a reverse process of the photographing unit, the display unit displays the stored base images, and the base images are combined while passing through the lens array to reproduce the stereoscopic image at the position where the original 3D object was located.

At this time, in order to solve the problems such as the depth reversal phenomenon occurring in the shooting process and to simplify the structure of the system, CGII (Computer-Generated Integral Imaging), which is a method of producing basic images with computer graphics, has been proposed.

The structure of the CGII system is a simple structure in which basic images of a virtual 3D object are generated using a computer, transmitted to a display unit, and a stereoscopic image is realized through a lens array.

At this time, the position where the stereoscopic image is formed depends on the distance between the lens array and the display unit, which can be easily seen from the following equation.

1 / d + 1 / g = 1 / f

(Where d is the position from the lens array of the stereoscopic image, g is the distance between the lens array and the display portion, and f is the focal length of the base lens (unit lens) constituting the lens array.)

In other words, when the distance between the lens array and the display unit is larger than the focal length of the base lens, the distance between images is positive and a stereoscopic image is actually formed on the front of the lens array (InIm (Integral Imaging)). If the distance between the array and the LCD panel is smaller than the focal length of the basic lens, the distance between the images becomes negative, which means that the stereoscopic image is formed as a virtual image on the back of the lens array (integral imaging).

FIG. 1 is a diagram illustrating a comparison between actual InIm and virtual InIm, which are two display methods of InIm. As shown in FIG. 1, in the case of the virtual image InIm, since the position where the stereoscopic image is formed is farther from the observer than the InIm, the stereoscopic image can be observed even when the observer's position is slightly closer to the lens array and the display unit. have. As can be seen from FIG. 1, the basic image of the virtual image InIm is similar to the actual implementation method of InIm, except that the basic image of the virtual image InIm is upright.

However, the problem with the InIm method is that the depth of the three-dimensional object that can be expressed is limited. As described above, the position where the stereoscopic image is formed is determined by the distance between the lens array and the display device, and the stereoscopic image is well displayed when the position where the stereoscopic image is formed is located at the focused position. However, when the position where the stereoscopic image is formed becomes far from the focus position, the displayed stereoscopic image is out of focus and distorted. That is, there is a problem that the depth of the stereoscopic image that can be expressed is limited to within several cm from the center depth plane formed based on the focus position.

Accordingly, an object of the present invention is to provide a three-dimensional image system with improved depth.

In accordance with an aspect of the present invention for solving the above technical problem,

A plurality of display elements sequentially arranged on the same central axis, each of the display elements having a different center depth plane for the applied base image, where the center depth plane is the focal point of the image displayed by the display element; A multi-layer image display unit for displaying a region included in a set distance based on the conjoined position; An image processor configured to provide respective base images corresponding to the plurality of display elements; And a lens array configured to display a stereoscopic image by forming a plurality of basic lenses and forming the basic images displayed on the display elements of the multilayer image display unit on different center depth planes.

The multi-layer image display unit may include: a general image display unit configured to display a basic image applied from the image processor and to constitute a single light emitting general display element; And a transmissive image display unit configured to display a base image applied from the image processor and to include at least one transmissive display element.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

Now, a stereoscopic image system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In an exemplary embodiment of the present invention, a stereoscopic image is formed on a plurality of central depth planes by using a multilayer display device including a plurality of display elements. The number of center depth planes varies according to the number of display elements used, and a plurality of center depth planes are created according to the depth of the stereoscopic image to be expressed, thereby improving the depth of the stereoscopic image formed. In this case, the center depth plane represents an area included in the set distance based on the position where the focus of the image displayed by the display element is focused. A plurality of display elements constituting the 'multi-layer display element' are arranged in parallel on the same axis, and one display element may be referred to as one layer. In constructing such a multilayer display element, the direction of the axis on which the display elements are arranged is not limited to any one direction.

2 is a block diagram illustrating a structure of a stereoscopic image system according to an exemplary embodiment of the present invention.

Referring to FIG. 2, a stereoscopic imaging system according to an exemplary embodiment includes a multilayer image display unit 100, an image processor 300, and a lens array 200.

The multilayer image display unit 100 includes a general image display unit 110 and a transmissive image display unit 120. The multilayer image display unit 100 corresponds to the multilayer display device according to the present invention.

The general image display unit 110 displays a basic image applied from the image processor 300, and serves as a light source as a device composed of one light emitting general display element.

The transmissive image display unit 120 displays a basic image applied from the image processor 300, and is a device composed of one or more transmissive display elements to display an image by modulating external light by modulating external light.

For example, a flat-panel display (FPD) may be used as the display element used in the general image display unit 110. As a display element used in the transmissive image display unit 120, for example, a panel of a liquid crystal display may be used, but the present invention is not limited thereto.

The multilayer image display unit 100 may implement the general type image display unit 110 and the transmissive image display unit 120 in various forms by adjusting the number of display elements. For example, as illustrated in FIG. 2, the multilayer image display unit 100 may include a general image display unit 110 using one general display element and a transmissive image display unit 120 using a plurality of transmissive display elements.

The multilayer image display unit 100 sequentially arranges the general image display unit 110 and the transmissive image display unit 120 on a path through which the base image is incident on the lens array 200. Specifically, the general type image display unit 110 is positioned at a position farthest from the lens array 200, and then the display elements of the transmissive image display unit 120 are positioned.

The image processor 300 is connected to the display device of the general image display unit 110 and the transmission image display unit 120 of the multilayer image display unit 100, respectively. The image processor generates a number of base images corresponding to the display elements constituting the general image display unit 110 and the transmissive image display unit 120, and provides the generated base images to corresponding display elements.

As shown in FIG. 2, the lens array 200 is positioned on the same central axis as the multilayer image display unit 100 in which the general image display unit 110 and the transmission image display unit 120 are sequentially arranged. Therefore, the distance between the lens array 200 and the display elements of the multilayer image display unit 100 is different. Accordingly, the base images displayed through the display elements of the multilayer image display unit 100 are imaged on different center depth planes to generate a stereoscopic image having improved depth.

Next, a method of generating a base image in a stereoscopic image system according to an embodiment of the present invention will be described.

In fact, the base image of the InIm and the base image of the virtual InIm are generated as follows.

For example, the position of the point P forming the stereoscopic image to be reproduced is (x, y) in Cartesian coordinates, and the depth information, that is, the distance from the lens array 200 to where the image of the point is formed is z, the lens. The center coordinates of the elementary lens of the elementary lens of the array 200 positioned i th from the left and j th from the left (lens_x [i] [j], lens_y [i] [j]), and x of the elementary lens Assume that the direction size is L_x, the y direction size is L_y, and the focal length is f.

At this time, the coordinate value E_ij of the point constituting the base image corresponding to the base lens located at the i th from the left from the i th among the base images of the point P as the virtual object point is determined by the following equation.

If the coordinate value E_ij is actually InIm,

Elemental_image_x [i] [j] = lens_x [i] [j] + (f / z) * (lens_x [i] [j]-x)

Elemental_image_y [i] [j] = lens_y [i] [j] + (f / z) * (lens_y [i] [j]-y)

It is decided.

If the coordinate value E_ij is a virtual image InIm,

Elemental_image_x [i] [j] = lens_x [i] [j]-(f / z) * (lens_x [i] [j]-x)

Elemental_image_y [i] [j] = lens_y [i] [j]-(f / z) * (lens_y [i] [j]-y)

It is decided.

In order to avoid the phenomenon that several reproduced stereoscopic images are simultaneously viewed among the points E_ij calculated by Equations 2 and 3 or Equations 4 and 5, only the points satisfying the following conditions are finally It becomes the basic image by the elementary lens located in the jth from the I-th.

(Condition 1) -Lx / 2 <Elemental_image_x [i] [j]-lens_x [i] [j] <Lx / 2

(Condition 2) -Ly / 2 <Elemental_image_y [i] [j]-lens_y [i] [j] <Ly / 2

In this case, since a single display element is used in the general II, only one type of basic image is produced and converted into a stereoscopic image through a lens array, so the depth of the stereoscopic image to be reproduced is limited to the position at which the focal point is formed.

However, the image processing unit 300 of the present invention may set a plurality of distances z from the lens array 200 to the place where the image of the dot is formed according to the number of display elements constituting the multilayer image display unit 100. That is, a plurality of z values are set according to distances between the display elements of the multilayer image display unit 100 and the lens array 200, and a plurality of base images satisfying different conditions may be generated based on the respective z values. Can be. Therefore, there is a feature that can represent an image having a variety of depth.

In the case of the base image displayed on the display element separated by the distance a from the lens array 200, each base image satisfies the following equation.

Elemental_image_x [i] [j] = lens_x [i] [j] + (a-f / a) * (lens_x [i] [j]-x)

Elemental_image_y [i] [j] = lens_y [i] [j] + (a-f / a) * (lens_y [i] [j]-y)

The distance (Central_Depth_Plane_a) between the center depth plane where the base images displayed by the display elements spaced apart by the a are formed through the lens array 200 and the lens array 200 satisfies the following equation.

Central_Depth_Plane_a = af / (a-f)

In the case of the base image displayed on the display element separated by the distance b from the lens array 200, each base image satisfies the following equation.

Elemental_image_x [i] [j] = lens_x [i] [j] + (b-f / b) * (lens_x [i] [j]-x)

Elemental_image_y [i] [j] = lens_y [i] [j] + (b-f / b) * (lens_y [i] [j]-y)

The distance (Central_Depth_Plane_b) between the center depth plane and the lens array 200 where the basic images displayed by the display elements spaced apart by the distance b are formed through the lens array 200 satisfies the following equation.

Central_Depth_Plane_b = bf / (b-f)

When the real image is to be displayed, the distance (eg, a) between the lens array 200 and the display element is greater than the focal length f of the base lens (a> f). In this case, the distance between the images is positive, and the stereoscopic image is actually formed as InIm on the front surface of the lens array 200. In this case, among the coordinate values of the points constituting the base image for each elementary lens, the coordinate values of the points constituting InIm are determined based on Equations 6 and 7.

On the contrary, when the virtual image is to be displayed, the distance between the lens array 200 and the display element (for example, b) is smaller than the focal length of the base lens (b <f). In this case, the distance between the images becomes negative, and the stereoscopic image is formed as the virtual image InIm on the rear surface of the lens array 200. In this case, the coordinate values of the points forming the virtual image InIm among the coordinate values of the points forming the basic image for each elementary lens are determined based on Equations 9 and 10.

According to an exemplary embodiment of the present invention, a distance between at least one display element and the lens array 200 among the plurality of display elements configuring the multilayer image display unit 100 is set to a, and the other at least one display element and the lens array ( By setting the distance between b) to b, real and virtual InIm can be simultaneously implemented. Accordingly, the stereoscopic image obtained through the multilayer image display unit 100 may have an improved depth.

Next, a plurality of embodiments according to a method of configuring the multilayer image display unit 100 according to an embodiment of the present invention will be described.

3A and 3B are structural diagrams illustrating a stereoscopic image system according to a first embodiment of the present invention.

3A and 3B, the stereoscopic image system according to the first embodiment of the present invention includes an image processor 300, a multilayer image display unit 100, and a lens array 200. Here, the general type image display unit 110 and the transmission type image display unit 120 of the multilayer image display unit 100 each include one display element.

The general image display unit 110 displays the first basic image applied by the image processor 300, and the transmissive image display unit 120 displays the second basic image applied by the image processor 300. The displayed base images are collected by the lens array 200 and are imaged on different center depth planes. In detail, since the general image display unit 110 is located farther from the lens array 200 than the transmission image display unit 120, the first basic image of the general image display unit 110 passes through the transmission image display unit 120. The lens array 200 generates one stereoscopic image with respect to one central depth plane. Meanwhile, when the second basic image is applied from the image processor 300, the transmissive image display unit 120 generates another stereoscopic image with respect to the center depth plane through the lens array 200 on the same central axis.

As described above, the center depth plan corresponding to the distance between the general type image display unit 110, the transmission type image display unit 120, and the lens array 200 is different. As a result, the basic images displayed on each display unit are changed to the lens array 200. This results in the formation of a stereoscopic image in two different central depth planes. That is, the general image display unit 110 and the transmissive image display unit 120 display stereoscopic images generated around a center depth plane at different positions. Therefore, it is possible to express a stereoscopic image having an improved depth than the depth using one display unit.

The image processor 300 generates a base image by photographing or calculation, and provides the basic image to the general image display unit 110 and the transmission image display unit 120 of the multilayer image display unit 100. That is, the first basic image is generated based on the distance between the general image display unit 110 and the lens array 200, and the second basic image is generated based on the distance between the transmissive image display unit 120 and the lens array 200. It is provided to the said display element.

3A in the accompanying drawings shows two real images, and FIG. 3B shows one real image and one virtual image.

If the distance between the lens array 200, the general image display unit 110, and the transmission image display unit 120 is greater than the focal length f of the primary lens (a> f), the distance between the lens is positive and is centered on the center depth plane. The stereoscopic image to be formed is actually InIm on the front surface of the lens array 200. On the contrary, when the distance between the lens array 200, the general image display unit 110, and the transmission type image display unit 120 is smaller than the focal length f of the basic lens (b <f), the distance between the images becomes negative and a stereoscopic image is obtained. On the back of the array 200 is formed as a virtual image InIm. As described above, two-dimensional display elements can be used to simultaneously implement a real image and a virtual image InIm, thereby improving depth.

In this case, among the coordinate values of the points constituting the base image for each elementary lens, the coordinate values of the points constituting InIm are defined by Equations 6 and 7, and the coordinate values of the points constituting the virtual image InIm are represented by Equations 9 and 10. It is decided.

 Next, a stereoscopic image system according to a second embodiment of the present invention will be described.

4 is a structural diagram illustrating a stereoscopic image system according to a second embodiment of the present invention.

The structure of the stereoscopic image system according to the second exemplary embodiment of the present invention is the same as that of the first exemplary embodiment, and is different from the first exemplary embodiment in that three or more N pieces of the multilayer image display unit 100 are configured. The display element was used to increase the sense of depth. In the first exemplary embodiment, the multi-layer image display unit 100 using two display elements displays a stereoscopic image centered on two center depth planes. In this case, when the depth difference between the two center depth planes is increased to represent a large depth object, the stereoscopic image located between the two center depth planes cannot be distorted. Therefore, it is preferable to use three or more N display elements to represent an object having a large depth or to express three or more different depths.

For this reason, the multilayer image display unit 100 according to the second exemplary embodiment includes a general image display unit 110 and two transmissive display elements 120-1 and 120-2. It consisted of. Although omitted in the drawings for convenience of description, the transmissive image display unit 120 may further include N display elements.

Referring to the interlayer arrangement of the multilayer image display unit 100, the general image display unit 110 is farther away from the lens array 200 than the transmission type display element 120-1, and the transmission type display element 120-1 is The light emitting device 120 is positioned farther from the lens array 200 than the transmissive display element 120-2. In this case, the basic images displayed sequentially through the general image display unit 110, the transmissive display elements 120-1, and 120-2 are formed into stereoscopic images in different center depth planes through the lens array 200, respectively. .

As the display elements constituting the transmissive image display unit 120 of the multi-layer image display unit 100 are increased by N, the stereoscopic images displayed by each display element are also increased by N, thereby further improving depth. It is easy to represent an object having a large depth, or an object having three or more different depths.

In this case, among the coordinate values of the points constituting the base image for each elementary lens, the coordinate values of the points constituting InIm are determined by Equations 6 and 7 as in the first embodiment, and the coordinate values of the points constituting the virtual image InIm are Set to 9 and 10

In the above case, N base images are generated by performing N calculations according to the distances a1, a2, a3,..., An between the display element and the lens array 200.

Next, a stereoscopic image system according to a third embodiment of the present invention will be described.

5 is a structural diagram showing a stereoscopic image system according to a third embodiment of the present invention.

The structure of the stereoscopic image system according to the third exemplary embodiment of the present invention is the same as that of the second exemplary embodiment, except that the distance between display elements, which is a component of the multilayer image display unit 100, is located close to each other. That is, the boundary of each stereoscopic image generated through the display elements is connected to overlap the boundary of the adjacent stereoscopic image. Here, the boundary of the stereoscopic image refers to a portion where adjacent stereoscopic images generated at different positions are connected to each other. Therefore, the multilayer image display unit 100 is a preferred configuration for displaying an image of an object having a large sense of volume and depth in a manner of expressing continuous depth.

As described above, the stereoscopic image using one display element may express a depth within a few centimeters in the center depth plane, that is, near the focus point. This is called a marginal depth, and as shown in FIG. 5, the depths of the general image display unit 110, the transmissive display element 120-1, and the transmissive display element 120-2 overlap each other. In more detail, the margin depth of the general type image display unit 110 overlaps the margin depth of the transmissive display element 120-1, and the margin depth of the transmissive display element 1 120-1 is equal to the transmissive display element 2 120-. Boundary depths of 2) are overlapped to secure continuous margins as much as three times the existing depth.

In this way, when the distance between adjacent display elements of the multilayer image display unit 100 is located close to each other to allow the interconnection depths to be interconnected, there is an effect of obtaining successive clearance depths connected to one another instead of several depths apart.

In the same manner as in the above-described embodiment, among the coordinate values of the points forming the basic image for each elementary lens, the coordinate values of the points forming InIm are determined by Equations 6 and 7, and the coordinate values of the points forming the virtual InIm are represented by Equation 9 And 10 respectively. Further, N base images are obtained by performing N calculations according to the distances a1, a2, a3, ..., an from the lens array 200 of each image display unit. However, the distance between the display elements is determined such that the respective depths overlap.

The embodiments of the present invention described above are not only implemented through the apparatus and the method, but may also be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation can be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

According to an exemplary embodiment of the present invention, an existing center depth plane is overcome by using a multi-layer image display unit and at the same time, a plurality of center depth planes may be implemented to improve the expressive depth of the image. As a result, it is possible to expect an effect of displaying an object having a large volume and depth without distortion of an image, which is limited to a few cm.

Claims (9)

A plurality of display elements sequentially arranged on the same central axis, each of the display elements having a different center depth plane for the applied base image, where the center depth plane is the focal point of the image displayed by the display element; A multi-layered image display unit for displaying a region included in a set distance on the basis of the confined position; An image processor configured to provide respective base images corresponding to the plurality of display elements; And Comprising a plurality of base lens and comprises a lens array for displaying a three-dimensional image by forming the base image displayed on each of the display elements of the multi-layer image display unit on different center depth plane, The image processor, And generating a corresponding number of base images according to the number of display elements constituting the multilayer image display unit. The method of claim 1, The multilayer image display unit, A general image display unit which displays a basic image applied from the image processing unit and is composed of one light emitting general type display element; And A transmissive image display unit displaying a basic image applied from the image processor and comprising at least one transmissive display element Stereoscopic imaging system comprising a. The method of claim 2, The general image display unit serves as a light source, and the transmissive image display unit displays an image by modulating the degree of transmission by modulating the light received from the general image display unit. The method of claim 1, The plurality of display elements, And a distance from the lens array is different from each other. The method of claim 1, The spacing between the plurality of display elements is, The depth of a stereoscopic image displayed by each of the plurality of display elements, wherein the depth of depth is set so that one display element means a depth of a stereoscopic image that can be expressed with respect to the center depth plane, overlaps with each other. Stereoscopic imaging system. delete The method of claim 1, The basic video is, In fact, it includes at least one of a basic image of InIm (Integral Imaging) or a basic image of a virtual InIm (Integral Imaging), InIm (actual image of the elementary image (Elemental_image_x [i] [j], Elemental_image_y [i] [j]) for a point P forming a stereoscopic image by a first display element spaced a (a> f) away from the lens array. Integral Imaging) coordinate value is The relation Elemental_image_x [i] [j] = lens_x [i] [j] + (a-f / a) * (lens_x [i] [j]-x) Elemental_image_y [i] [j] = lens_y [i] [j] + (a-f / a) * (lens_y [i] [j]-y) x, y: coordinate of point P which is an object point of 3D image information a: distance from the base lens of the lens array to where the image of the point P is formed lens_x [i] [j] and lens_y [i] [j]: center coordinates of the elementary lens of the lens array, which is located i th from the left and j th from the top f: focal length of the elementary lens Satisfying, Virtual image InIm coordinates of the basic image (Elemental_image_x [i] [j], Elemental_image_y [i] [j]) with respect to a point P forming a stereoscopic image by a second display element spaced apart from the lens array by b (b <f) The value is, The relation Elemental_image_x [i] [j] = lens_x [i] [j]-(b-f / b) * (lens_x [i] [j]-x) Elemental_image_y [i] [j] = lens_y [i] [j]-(b-f / b) * (lens_y [i] [j]-y) Stereoscopic imaging system, characterized in that to satisfy. The method of claim 7, wherein The distance between the central depth plane formed by the first display element spaced by the distance a and the lens array (Central_Depth_Plane_a) is Equation Central_Depth_Plane_a = af / (a-f) Satisfying The distance (Central_Depth_Plane_b) between the center depth plane formed by the second display element spaced by the distance b and the lens array is Equation Central_Depth_Plane_b = bf / (b-f) Stereoscopic imaging system, characterized in that to satisfy. The method according to any one of claims 7 to 8, The image processor, A base image corresponding to a real image is provided to at least one display element among the plurality of display elements, and a base image corresponding to a virtual image is provided to at least one display element, so that the actual image and the virtual image are simultaneously displayed by the display elements. Stereoscopic imaging system for display.

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