KR20160106267A - layered Hologram System using Auto-stereoscopic 3D image - Google Patents

Abstract

An embodiment of the present invention relates to a layered hologram implementing system using an auto-stereoscopic three-dimensional (3D) image. The layered hologram implementing system using an auto-stereoscopic 3D image comprises a regeneration device, an auto-stereoscopic 3D display device, a first lens and a second lens. The regeneration device synchronizes first 3D image content and second 3D image content generated by a 3D method to be regenerated. The auto-stereoscopic 3D display device includes two separate screens, a first screen and a second screen, which are placed on an equal vertical plane, and displays a regenerative image of a first 3D image contents on the first screen and a regenerative image of a second 3D image contents on the second screen. The first lens is positioned to be tilted at a predetermined angle with respect to the auto-stereoscopic 3D display device and generates a first hologram by refracting the first 3D image displayed on the first screen. The second lens is positioned to be tilted at a predetermined angle with respect to the auto-stereoscopic 3D display device and generates a second hologram by refracting the second 3D image spatially floated in a second image. A hologram providing the desired feeling of depth can be provided.

Description

Layered Hologram System Using Auto-stereoscopic 3D Image

The present invention relates to a laminate type hologram realization system using a spectacles 3D image.

As the interest in stereoscopic image service has been increasing recently, devices for providing stereoscopic images are continuously being developed. There are stereoscopic and auto-stereoscopic methods for realizing such stereoscopic images.

The basic principle of the stereoscopic method is that a plurality of images orthogonal to each other are input to the left eye and the right eye of a human being, and stereoscopic images are generated by combining images input from the left eye and right eye of the human brain. In this case, the fact that the images are arranged to be orthogonal to each other means that the respective images do not interfere with each other. The auto-stereoscopic method is also referred to as a non-eyeglass method.

That is, the method of implementing the stereoscopic image display apparatus can be largely divided into a spectacle method and a non-spectacle method.

FIG. 1 is an exemplary view showing a system of stereoscopic images in a non-eyeglass system.

First, there is a non-point-of-view system in the non-eyeglass system. The above-mentioned multi-view glasses system includes a parallax barrier system and a lenticular lens system.

The Parental Barrier scheme applies a barrier to the display, wherein the barrier consists of vertical lines, and there is a slit between the vertical lines. And the left eye makes the parallax in the right eye by the slit.

The lenticular method arranges the refined small lenses on the display on the display so that the images are refracted by the small lenses to show different images on the left and right eyes.

1 is based on a general parallax barrier system. The stereoscopic image display apparatus 100 includes a display panel 30 and a parallax barrier 20 for simultaneously displaying left and right images.

In this case, the display panel 30 is alternately defined with a left eye pixel L for displaying an image for the left eye and a right eye pixel R for displaying an image for the right eye, The parallax barrier 20 is disposed between the user 30 and the user 40.

The parallax barrier 20 is repeatedly provided with a slit 22 and a barrier 21 for selectively passing light from the left and right eye pixels L and R in a striped pattern oriented in the vertical direction with respect to the user 40 Respectively.

The left eye image displayed on the left eye pixel L of the display panel 30 reaches the left eye of the user 40 via the slit 22 of the parallax barrier 20, The right eye image displayed on the right eye pixel R reaches the right eye of the user 40 via the slit 22 of the parallax barrier 20. At this time, And the user 40 recognizes the three-dimensional image by combining the two images.

In the non-eyeglass 3D display for recognizing the three-dimensional image in accordance with the parallax, when the image is significantly out of the screen (pop-out), the ghost phenomenon occurs in which the user 40 feels dizziness. Because of this ghost phenomenon, the limitation of the depth sense of the three-dimensional image is limited. Therefore, the distance that the maximum protrusion can be popped out is 0.5 times the screen height, 0.5 times, so that the depth of the object that protrudes as far as possible and the background that enters the maximum backward becomes the maximum of one time of the screen height.

On the other hand, the currently used hologram is a method of projecting a 2D image onto a semitransparent screen or a two-way mirror using a 2D projector or a 2D display. As the projected image is 2D, 3D stereoscopic effect or 3D volume sensation can not be expressed.

As described above, the object of the present invention is to provide a technique for displaying a stereoscopic image with improved stereoscopic effect without ghosting.

According to an embodiment of the present invention, there is provided a method of providing a hologram having an improved stereoscopic effect by projecting a spectacle-free stereoscopic image to generate a hologram.

One embodiment of the present invention relates to a stereoscopic image display apparatus, including a playback apparatus for synchronously reproducing a first stereoscopic image content and a second stereoscopic image content generated in a spectacles-free 3D manner, a second display unit including two separate first and second screens, The first screen and the second screen are placed on the same vertical plane, and the non-spectacled 3D image for displaying the reproduced image of the first stereoscopic image content on the first screen and the reproduced image of the second stereoscopic image content on the second screen A first lens which is inclined at a predetermined angle with the non-spectacle 3D display device and refracts a first stereoscopic image displayed on the first screen to generate a first hologram, And a second lens which is inclined by a predetermined angle of inclination with respect to the first area and refracts the second stereoscopic image that is space-floated in the second area to generate a second hologram, Using provides a multi-layer holographic system implementation.

The reproduction apparatus acquires the content of the first stereoscopic image and the content of the second stereoscopic image generated by the non-spectacles 3D method, and acquires the content of the obtained multi-viewpoint first stereoscopic image and the content of the second stereoscopic image into one file The first stereoscopic image raster file and the second stereoscopic image raster file are synchronously reproduced to generate a raster file.

According to the embodiment of the present invention, an improved depth feeling can be realized by adjusting the interval between the screen for the front object and the screen for the rear object.

The holograms generated by different contents can be arrayed and displayed, and an actual object or person can be input between the holograms, thereby providing a new experience to the audience in advertisements, performances, and the like.

FIG. 1 is a diagram showing an example of a conventional stereoscopic image without glasses.
2 is a diagram illustrating an example of a stereoscopic image production system according to an embodiment of the present invention.
3 is a diagram illustrating an example of a stereoscopic image production system according to an embodiment of the present invention.
FIG. 4 is a flowchart illustrating a method for controlling the image production system shown in FIG.
5 is a flowchart showing a modification of Fig.
6 is an exemplary diagram for explaining the concept of a stereoscopic image.
FIG. 7 is an exemplary view illustrating a system for implementing a 3D hologram using an eyeglass 3D image according to an embodiment of the present invention.
FIG. 8 is an exemplary view for explaining an arrangement of a 3D hologram implementing system using a spectacles 3D image according to an embodiment of the present invention.
FIG. 7 is an exemplary view illustrating a system for implementing a stacked-type hologram using the spectacles 3D image according to the first embodiment of the present invention.
FIG. 8 is an exemplary view for explaining an arrangement of a stacking type hologram embodying system using a spectacles 3D image according to the first embodiment of the present invention.
FIG. 9 is an exemplary view illustrating a system for implementing a stacked-type hologram using a spectacle-less 3D image according to a second embodiment of the present invention.
10 is an exemplary view for explaining an arrangement of a stacking type hologram embodying system using a spectacles 3D image according to a second embodiment of the present invention.
11 is a second exemplary view for explaining an arrangement of a stacking type hologram implementing system using a spectacle-less 3D image according to a second embodiment of the present invention.
FIG. 12 is a flowchart illustrating a method for displaying a stereoscopic image of a 3D hologram realization system using a spectacles 3D image according to an embodiment of the present invention.
13 is an exemplary diagram illustrating a format of image content according to an embodiment of the present invention.
14 is an exemplary view showing a format of image content according to another embodiment of the present invention.
FIG. 15 is an exemplary diagram for illustrating a setup method for displaying a first stereoscopic image and a second stereoscopic image according to an embodiment of the present invention. Referring to FIG.
FIG. 16 is an exemplary view showing a system for implementing a 3D hologram using a spectacles 3D image according to the first embodiment of the present invention.
17 is a view illustrating an example of a system for implementing a 3D hologram using a spectacles 3D image according to a second embodiment of the present invention.

It is noted that the technical terms used herein are used only to describe specific embodiments and are not intended to limit the invention. It is also to be understood that the technical terms used herein are to be interpreted in a sense generally understood by a person skilled in the art to which the present invention belongs, Should not be construed to mean, or be interpreted in an excessively reduced sense. Further, when a technical term used herein is an erroneous technical term that does not accurately express the spirit of the present invention, it should be understood that technical terms that can be understood by a person skilled in the art are replaced. In addition, the general terms used in the present invention should be interpreted according to a predefined or prior context, and should not be construed as being excessively reduced.

Also, the singular forms "as used herein include plural referents unless the context clearly dictates otherwise. In the present application, the term "comprising" or "comprising" or the like should not be construed as necessarily including the various elements or steps described in the specification, Or may be further comprised of additional components or steps.

Further, the suffix "module" and "part" for components used in the present specification are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

Furthermore, terms including ordinals such as first, second, etc. used in this specification can be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or similar elements throughout the several views, and redundant description thereof will be omitted.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It is to be noted that the accompanying drawings are only for the purpose of facilitating understanding of the present invention, and should not be construed as limiting the scope of the present invention with reference to the accompanying drawings.

Prior to the description, '3D', '3D', and 'stereoscopic' mixed in the present invention are used in the same sense.

In addition, a display panel is used as a generic meaning of an image that can be viewed by a person.

First, a method for acquiring the spectacles 3D content used in the present invention will be described below with reference to FIGS. 2 and 3. FIG.

2 is a diagram illustrating an example of a stereoscopic image production system according to an embodiment of the present invention.

2, according to one embodiment of the present disclosure, images captured using a plurality of cameras 151 through 159 (hereinafter, referred to as 150) supported by rails 160 The content production apparatus 100 can produce a stereoscopic image. Specifically, it is as follows.

The plurality of cameras 150 are cameras capable of photographing general photographic images, that is, 2D images. The camera 150 may be a digital single-lens reflex camera (DSLR), a digital single-lens translucent (DSLT), or a mirrorless camera. In addition, the camera 150 may be a lens mount type camera or a lens exchange type camera. That is, for example, a wide-angle lens, a standard lens, a telephoto lens, and the like may be exchangeably mounted on each camera 150. The standard lens may mean, for example, a lens having a focal length of 35 mm to 85 mm. The wide angle lens may mean a lens having a focal length of less than 35 mm. The telephoto lens may mean a lens having a focal length of 70 mm or more.

Hereinafter, a lens interchangeable camera will be described, but the present invention is not limited thereto.

It is preferable that the plurality of cameras 150 are capable of capturing a moving image, but it is acceptable if an image can be captured at a speed of several frames per second even if a moving image can not be captured.

The plurality of cameras 150 are supported by the rails 160 so that each of the cameras 150 can be finely moved in the x, y and z axis directions . That is, the rail 160 allows each camera 150 to be linearly moved in the x-axis direction, rotated or linearly moved along the y-axis, and rotated or linearly moved along the z-axis . To this end, the rail 160 may be provided with a motor or an actuator for adjusting each camera 150 in the x, y, and z axis directions.

In FIG. 5, the plurality of cameras 150 are shown as nine cameras, but they may be implemented by at least two cameras.

Meanwhile, the content production apparatus 100 is connected to the rail 160 so that each camera 150 can be finely moved in the x, y, and z axis directions. In addition, the content production apparatus 100 may be connected to each of the cameras 150. At this time, the connection of each camera 150 may be wired or wireless.

The content production apparatus 100 may store an image photographed from each connected camera 150 in an internal memory or an external memory, manufacture the stereoscopic image based on the image, and store the stereoscopic image in the internal memory or the external memory . The memory may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), a RAM, a ROM (EEPROM, etc.). ≪ / RTI >

The content production apparatus 100 may control the rail 160 and each camera 150. [ For example, the content production apparatus 100 may control the rails 160 to adjust the cameras 150 to be close to or spaced from each other in the x-axis direction. The x-axis direction distance between the plurality of cameras 150 can be expressed as a distance between lens axes as shown in FIG. At this time, the inter-axis distance between the plurality of cameras 150 can be adjusted according to the average binocular disparity distance of the human and the focal length L of the lens. For example, when three cameras 151, 152, and 153 are used, the inter-axis distance between the first camera 151 and the third camera 153 is determined by the average binocular disparity distance of the human and the focal length L of the lens And the second camera 152 is disposed at the center of the first camera 151 and the third camera 153 and serves as a reference focus as described above or can be used for previewing have.

FIG. 3 is a flowchart illustrating a method for controlling the image production system shown in FIG. 1, and FIG. 4 is a flowchart illustrating a modification of FIG. 5 is an exemplary diagram for explaining the concept of a stereoscopic image.

The schemes shown in Figs. 3 and 4 are described below assuming that the camera 150 is a lens interchangeable camera, but it is not limited thereto.

First, as described above, for example, a wide-angle lens, a standard lens, a telephoto lens, and the like may be interchangeably mounted on each camera 150. Therefore, the content production apparatus 100 acquires information on the focal length L of the lens mounted on each camera 150 (S111).

Subsequently, the content production apparatus 100 acquires distance information to the convergence point intended by the content producer (S113). Convergence point refers to the point where the 3D sensation is zero. Specifically, a convergence point is a point at which the focus of each camera coincides with each other. These convergence points can be adjusted in distance. Therefore, when the main subject, which is an object to be photographed, is set to the convergence point, the main subject is photographed in 2D without stereoscopic effect, that is, without stereoscopic view.

When the convergence point is shot at a point farther away from the subject and then photographed, the stereoscopic view can be expressed as if the subject is located in front of the background located at the convergence point.

Referring again to FIG. 3, the camera 150 may be replaced with a wide-angle lens, a standard lens, a telephoto lens, or the like, as described above. Therefore, the content production apparatus 100 acquires information on the focal length L of the lens mounted on each camera 150 (S111).

Subsequently, the content production apparatus 100 acquires distance information to the convergence point intended by the content producer (S113). Convergence point refers to the point where the 3D sensation is zero. Specifically, a convergence point is a point at which the focus of each camera coincides with each other. These convergence points can be adjusted in distance. Therefore, when the main subject, which is an object to be photographed, is set to the convergence point, the main subject is photographed in 2D without stereoscopic effect, that is, without stereoscopic view.

When the convergence point is shot at a point farther away from the subject and then photographed, the stereoscopic view can be expressed as if the subject is located in front of the background located at the convergence point.

Referring back to FIG. 3, the content production apparatus 100 acquires the width information of the stage at the convergence point (S115). The horizontal width of the stage at the convergence point means the transverse width X of the convergence point at the stage when the distance Y of the convergence point is adjusted to the center of the stage as shown in FIG. At this time, objects located on the foreground than the convergence point are expressed with a sense of depth protruding from the stereoscopic image, and objects located on the rear side of the convergence point can be expressed with a depth sense of retreating from the stereoscopic image.

When the above-described information is obtained, the content production apparatus 100 can calculate the depth of view that can be expressed (S117). That is, as shown in FIG. 5, the content production apparatus 100 can calculate the expressible depth sense (d).

An example of each of the above-described processes will be described below.

In the above-described S113 process, the inter-lens-axis distance x can be calculated as follows.

[Equation 1]

Distance between lens axes (x) = distance to convergence point (Y) / (distance to subject / average distance of human binocular parallax)

Here, the distance to the subject can be 4,000 mm which is optimal for viewing. And the human binocular disparity mean distance may be, for example, 64.5 mm.

Therefore, if Equation (1) is rewritten, for example, the distance between lens axes (x) = Y / (4000 mm / 64.5 mm) can be expressed.

On the other hand, in step S115, the width information of the stage at the convergence point can be obtained by the following equation.

&Quot; (2) "

At the convergence point, the width of the stage (X) = (cameraimic sensor size / L) * Y

Here, L is the focal length of the lens, and Y is the distance to the convergence point. The size of the camera image sensor may be 36 mm on the basis of a film camera.

Then, in step S117, the expressible depth sense (d) can be obtained by the following equation.

&Quot; (3) "

(Maximum focal length of the lens - maximum focal length of the lens - shortest focal length of the lens)) * (maximum focal length of the lens - actual lens ) + (The shortest focal distance of the lens)) * (Y / optimal viewing distance)

Here, the longest focal distance of the lens may be, for example, 55 mm, and the shortest focal distance of the lens may be 18 mm.

If the stereoscopic image display method is a lenticular lens method, the maximum stereoscopic effect displayed on the screen is a maximum viewing distance of 4,000 mm to a maximum of 1,600 mm (actual 1,626 mm), a minimum 800 mm 775 mm).

That is, when the focal length of the lens is 18 mm, a depth of up to 1,600 mm can be expressed, and when the focal length of the lens is 55 mm, a depth of 800 mm can be expressed.

The above table can be summarized as follows.

Distance to convergence point (Y) 4,000 7,000 10,000 Lens Focal Length (L) 55 At the convergence point, the lateral width (X)          2,618          4,582          6,545 Depth feeling (d)             800          1,400          2,000 Distance between axes (x)            64.5          112.9          161.3 18 At the convergence point, the lateral width (X)          8,000         14,000         20,000 Depth feeling (d)          1,600          2,800          4,000 Distance between axes (x)            64.5          112.9          161.3 28 At the convergence point, the lateral width (X)          5,143          9,000         12,857 Depth feeling (d)          1,384          2,422          3,459 Distance between axes (x)            64.5          112.9          161.3

As described above, the content production apparatus 100 can calculate an expressible depth sense based on the acquired information.

Meanwhile, as shown in FIG. 4, the content production apparatus 100 may perform a process different from the procedure shown in FIG. 3 to calculate the focal length of the lens so that the lens to be mounted on each camera can be selected . The sequence of FIG. 4 will not be described in detail, as will be readily understood by those skilled in the art based on the foregoing description.

In addition, in the embodiment of the present invention, a method of acquiring non-spectacles 3D contents by directly shooting with a plurality of cameras has been described, but the present invention is not limited thereto. In another variant, computer graphics can be utilized to acquire a non-eyeglass 3D content such as that shot at the camera's back-point.

FIG. 6 is a flowchart illustrating a method for producing a stereoscopic 3D stereoscopic image through the image production system shown in FIG.

Referring to FIG. 6, the content production apparatus 100 acquires images from the plurality of cameras 150 (S211).

When the image is acquired, the content production apparatus 100 corrects the color of each camera image (S213). That is, the cameras 151, 152, and 153 may coincide with each other because the white balance, the color temperature, the contrast, the name card, the color tone, etc. may be inconsistent with each other.

Next, the content production apparatus 100 corrects the position offset of the image frame of each camera (S214). For example, if the camera 150 is misaligned in the y-axis direction and the z-axis direction on the rail 160 and there is a difference therebetween, there may be an offset between the photographed images. Therefore, the content production apparatus 100 corrects the offset between the images photographed by each camera.

As described above, when the color correction and the offset correction are completed, the content production apparatus 100 synthesizes the images obtained from the respective cameras to generate a stereoscopic image.

First Embodiment

FIG. 7 is an exemplary view illustrating a system for implementing a 3D hologram using a spectacles 3D image according to an embodiment of the present invention, and FIG. 8 is an exemplary view for explaining an arrangement of a stereoscopic image display system according to an embodiment of the present invention to be.

7 and 8, according to an embodiment of the present invention, a stereoscopic image reproducing apparatus 300 (hereinafter, referred to as a reproducing apparatus) 300 using two displays 210 and 220 and a lens 230, Can be used to array stereoscopic images. Specifically, it is as follows.

The reproduction apparatus 300, which has acquired the contents of the two non-eyeglasses 3D stereoscopic images, mixes and synchronizes the first non-stereoscopic 3D stereoscopic image contents and the second non-stereoscopic 3D stereoscopic image contents, And the second non-eyeglasses 3D display 220.

The first spectacles 3D display 210 displays the first stereoscopic image I1 on the screen by the playback apparatus 300 that reproduces the first stereoscopic image content, The second stereoscopic image I2 is displayed on the screen by the reproducing apparatus 300 reproducing the stereoscopic image content.

The lens 230 is provided to be inclined at an angle of 45 degrees with the second non-glasses 3D display 220. The vertical height with respect to the bottom surface of the lens 230 may be half the height of the display panel.

The lens 230 is a mirror that reflects a part of light and transmits a part of light on one side of the both sides. These mirrors are called half mirrors or two way mirrors.

Such a half mirror or TWO WAY MIRROR is a mirror with one side being a mirror and the other side being a window. So that the surface (facing surface) facing the second non-glasses 3D display 220 is mirrored.

Referring to FIG. 7, on the basis of a user (viewer) observing from the right side of the lens 230, the lens 230 reflects the image output from the second non-glasses 3D display 220, The first stereoscopic image I1 arranged on the back side is transmitted so that the first stereoscopic image I1 and the hologram I2 'have different depths at the viewing angle of the user.

The second stereoscopic image I2 displayed by the second non-glasses 3D display 220 is refracted by the lens 230 which is a TWO WAY MIRROR. This refraction produces a floating hologram I2 '.

In order to arrange the generated hologram 12 'in front of the first stereoscopic image I1, the second no-spectacle 3D display 220 is disposed in front of the first non-spectacle 3D display 210, Eyeglass 3D display 210 on the same plane as the vertical axis. For example, the second non-glasses 3D display 220 may be placed on a floor or ceiling at a predetermined spaced distance in front of the first non-glasses 3D display, or on any horizontal plane between the floor and the ceiling .

According to this configuration, the hologram 12 'of the second stereoscopic image 12 displayed by the second non-spectacle 3D display 220 is displayed on the first stereoscopic image I1).

In this configuration, the height (h) of the first non-spectacle 3D display 210 and the second non-spectacle 3D display 220 are equal to each other, and the first non-spectacle 3D display 210 and the second non- The distance d between the first and second stereoscopic images is determined by a maximum pop-out distance of the first stereoscopic image, a maximum depth depth distance of the second stereoscopic image, .

Herein, the maximum pop-out distance means a distance at which the stereoscopic image can be maximally projected without ghosting in the spectacle-free 3D display, and the maximum depth distance means a distance from the stereoscopic 3D display Is a distance that can be expressed as far as possible.

In one embodiment of the present invention, the maximum pop-out distance of the first stereoscopic image and the maximum depth depth distance of the second stereoscopic image are respectively 0.5 times the height h of the first non- to be.

The optimal distance between the first stereoscopic image and the second stereoscopic image may be -h to h. Therefore, the distance d between the first non-spectacle 3D display 210 and the second non-spectacle 3D display 220 is equal to or smaller than 0 and not more than twice the height h of the first non-spectacle 3D display.

Second Embodiment

FIG. 9 is a view illustrating a system for implementing a laminate-type hologram using a spectacle-less 3D image according to a second embodiment of the present invention. FIG. FIG. 11 is a second exemplary view for explaining the arrangement of a stacking type hologram embodying system using a spectacles 3D image according to a second embodiment of the present invention.

9 and 10, a laminate type hologram realization system using a spectacles 3D image according to a second embodiment of the present invention includes a display device 400, two lenses 430 and 440, and a reproducing device 500).

Reproducing apparatus 500 acquires and reproduces the first stereoscopic image content and the second stereoscopic image content generated in the non-spectacle 3D manner. The stereoscopic image content reproduction of the playback apparatus 500 will be described later with reference to Figs. 12 to 15. Fig.

The display device 400 displays an image reproduced by the reproduction device 500. [

The display device 400 may be a non-spectacles 3D display device, a display panel in which the screen display area is divided, or two separate display panels 410 and 420.

When the display device 400 is one display panel in which the screen display area is separated, the first stereoscopic image by the reproduction of the first stereoscopic image content is displayed on the first display screen, And displays the second stereoscopic image on the second display screen.

When the display device 400 is the two separate display panels 410 and 420, the first stereoscopic image by the reproduction of the first stereoscopic image content is displayed on the first display panel 410, Dimensional image on the second display panel 420 by the reproduction of the second stereoscopic image.

The lenses 430 and 440 are provided to be inclined with respect to the display device 400 by a predetermined angle, for example, an inclination of 45 degrees. The hologram can be generated even when the angle is not 45 degrees, but the hologram is not distorted at 45 degrees. The vertical height with respect to the bottom surface of the lenses 430 and 440 may be half the height of the display panel.

The lenses 430 and 440 are mirrors that reflect a part of light and a part of light on one side of the both sides. These mirrors are called half mirrors or two way mirrors.

Such a half mirror or TWO WAY MIRROR is a mirror with one side being a mirror and the other side being a window. So that the surface (facing surface) facing the first display panel 410 and the second display panel 420 becomes a mirror.

9, the lens 430 reflects an image output from the first display panel 410, on the basis of a user (viewer) observing from the right side of the lenses 430 and 440. The lens 440 reflects the image I20 output from the second display panel 420 and transmits the hologram I10 'disposed on the rear surface of the lens 440 to transmit the first hologram I10' 'And the second hologram I20' have different depths.

The first stereoscopic image I10 displayed by the display device 400 and the second stereoscopic image I20 are refracted by the lenses 430 and 440 which are two way mirrors. The first hologram I10 'and the second hologram I20' of the floating type are generated by this refraction.

The arrangement for representing the generated first hologram I10 'and second hologram I20' in a stacked form will be described.

First, when the display device 400 includes two separate display panels 410 and 420, the second hologram I20 'is placed in front of the first display panel 410 corresponding to the first hologram I10' The first display panel 410 and the second display panel 420 are arranged on a plane having the same vertical axis so that the corresponding second display panel 420 is arranged. For example, the first display panel 410 and the second display panel 420 may be disposed on the ceiling or floor of the installation stage.

In this arrangement, if the height h of the first display panel 410 and the second display panel 420 are the same, if the same first stereoscopic image content and second stereoscopic image content have the same characteristics, for example, resolution, The characteristics of the hologram and the second hologram can be expressed in the same manner.

A maximum depth distance d11 of the first stereoscopic image, a maximum pop-out distance d12 of the first stereoscopic image, a maximum depth distance d21 of the second stereoscopic image, , And the maximum pop-out distance d22 of the second stereoscopic image is 0.5 times the height h (height of the display panel).

The distance d between the first display panel 410 and the second display panel 420 can be arbitrarily changed by the installer, but when the optimal clearance between images is? H to h, Height) is an effective distance for expressing the depth sense between the optimal holograms.

Herein, the maximum pop-out distance means a distance at which the stereoscopic image can be maximally projected without ghosting in the spectacle-free 3D display, and the maximum depth distance means a distance from the stereoscopic 3D display Is a distance that can be expressed as far as possible.

When the display device 400 is one display panel in which the screen display area is separated, the first display screen is displayed at the position of the first display panel 410, the second display screen is displayed at the position of the second display panel 420 And the height of the display panel is set to the height of the display screen.

The two lenses used in the second embodiment of the present invention may be provided so as to be parallel to each other as shown in Figs. 9 and 10, or perpendicular to each other as shown in Fig.

11, the distances for disposing the respective components are the same as in the case where the lenses are arranged horizontally to each other. However, when the two lenses are installed vertically, the image of the first display panel 411 is displayed on the image generated by the first display panel 410 when the two lenses are installed horizontally, .

Hereinafter, a stereoscopic image display method of a laminate type hologram realization system using an eyeglass 3D image will be described with reference to FIGS. 12 to 15. FIG.

FIG. 12 is a flowchart illustrating a stereoscopic image display method by a playback apparatus of a laminate-type hologram implementing system using an eyeglass 3D image according to an embodiment of the present invention. FIG. 13 is a diagram illustrating an exemplary format of an image content according to an exemplary embodiment of the present invention, FIG. 14 is an exemplary view illustrating a format of an image content according to another exemplary embodiment of the present invention, and FIG. FIG. 2 is an exemplary diagram illustrating a setup method for displaying a first stereoscopic image and a second stereoscopic image according to an exemplary embodiment of the present invention.

Referring to FIG. 12, the stereoscopic image reproducing apparatus described in the first and second embodiments acquires the first stereoscopic image content and the second stereoscopic image content (S311). The first stereoscopic image content and the second stereoscopic image content acquired at this time are multi-point content.

Next, the stereoscopic image reproducing apparatus converts the first stereoscopic image content and the second stereoscopic image content into a single file in order to display the acquired image as a synchronized hologram (S312).

For example, as shown in FIG. 12, the first stereoscopic image content and the second stereoscopic image content are 9-view images, i.e., 9-tile content generated according to each viewpoint, It is assumed that each image has a resolution of 1280 × 720.

In this case, each viewpoint image of the first stereoscopic image content and each viewpoint image of the second stereoscopic image content may be combined into a pair of tiles to generate nine new tiles. For example, the one-eye image of the first stereoscopic image content and the one-eye image of the second stereoscopic image content are combined into a single pair of images. Each pair of viewpoint images may be processed for synchronization. For example, the first stereoscopic image content and the second stereoscopic image content may include time information for an arbitrary unit. At the time of reproduction, the synchronization of the time information can be made.

The generated image of the pair of the first and second stereoscopic image contents may have a total resolution of 3840 × 4320 or 7680 × 2160.

In step S312, in order to reproduce the first stereoscopic image content on the first display panel or the first display screen in the image content in which the first stereoscopic image content and the second stereoscopic image content are paired, 2 stereoscopic image is generated (S313).

A raster file refers to a set of consecutive pixels in which an image is composed of pixels in the form of a two-dimensional array, the shapes of these points are combined, and one image information is represented by pixels at regular intervals. In the case of the raster method, the position information of all the pixels is represented in correspondence with the storage location, and then the information stored in the storage location is sequentially read to determine the pixel appearance of the output device at the designated value.

The following stereoscopic image reproducing apparatus synchronizes and reproduces the generated first raster file for the first stereoscopic image and the second raster file for the second stereoscopic image (S314). And outputs a first stereoscopic image and a second stereoscopic image to the first display panel (or the first display screen) and the second display panel (or the second display screen) in accordance with the reproduction instruction of the playback apparatus.

The stereoscopic image output in this manner generates a hologram by a two-way mirror.

That is, in the first embodiment, the first stereoscopic image is displayed on the rear side and the second stereoscopic image is displayed on the front side.

In the case of the second embodiment, the first hologram is displayed on the rear side, and the second hologram is displayed on the front side.

The depth sense can be controlled by adjusting the distance between the first stereoscopic image and the second stereoscopic image.

 In order to play high-quality (UHD) images of 9 or more images, a large amount of information (9 to 36 times) than the currently used FHD (Full-HD) 2D image must be processed in real time. To this end, the playback apparatus must be able to efficiently compress / reproduce high-capacity contents.

In addition, the playback apparatus may perform an error correction procedure based on the first stereoscopic image and the second stereoscopic image that are synchronized. The error correction procedure includes checking an error and correcting the error of the detected image data (or any tile or one pixel) based on another image in which no error is detected when an error is detected .

For example, it is detected whether the DC coefficient (Direct Current) included in the block-based DCT (Discrete Cosine Transform) coefficient of the image falls within a certain range as compared with the DC coefficient of the surrounding block, , It can be determined that an error is contained in the macroblock.

FIG. 15 is an exemplary view for explaining a method of setting up a display of a first stereoscopic image and a second stereoscopic image according to an embodiment of the present invention.

As shown in Figs. 15A and 15B, display settings can be performed through a display screen of a PC or the like connected to the playback apparatus. In order to reproduce the first stereoscopic image and the second stereoscopic image on the first display panel and the second display panel, two displays are set to the extended mode.

In the embodiment of the present invention, since the brightness decreases in proportion to the number of viewpoints and the resolution also decreases with the number of viewpoints, a nine-eye display is adopted to obtain a stable image when reproducing contents for a stereoscopic image array, But is not limited thereto. In addition, in the case of adopting the nine-eye type display, it is desirable to adopt a high resolution LCD panel of 4K (3840x2160) or more in order to prevent the problem of degraded brightness and resolution.

16 is an exemplary view illustrating a stereoscopic image array display system according to the first embodiment of the present invention.

A first non-spectacle 3D display 210 provided with a front direction of the stage and a second non-spectacle 3D display 220 placed on the bottom of a vertical axis in the front direction of the first non-spectacle 3D display 210, Respectively.

Therefore, the viewer can feel a deeper three-dimensional feeling by fusing the hologram by the image reproduced in the second non-glasses 3D display 220 with the background from the first non-glasses 3D display 210. [

17 is a view illustrating an example in which a stereoscopic image array display system according to a second embodiment of the present invention is installed.

A first display panel 410 and a second display panel 420 disposed on the bottom of a vertical axis in the front direction of the second display 410 are disposed as shown in FIG. The first lens 430 is a two-way mirror at an angle of 45 degrees and the second lens 440 is a two-way mirror at an angle of 45 degrees with the second display panel 420.

With this configuration, the viewer can recognize the hologram by the image reproduced by the first display panel 410 as the rear image, and the hologram by the image reproduced by the second display panel 410 as the front image. Therefore, the installer can use the hologram disposed on the front side as the target image and the hologram disposed on the rear side as the background image according to the purpose. That is, the first stereoscopic image content can be used as the background image and the second stereoscopic image content can be used as the target image.

In addition, the interval between the first display panel 410 and the second display panel 430 may be adjusted, and an actual object may be placed between the first and second display panels 410 and 430, or a host may be inserted therebetween.

The foregoing description is merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the spirit of the present invention.

Accordingly, the embodiments disclosed in the specification of the present invention are not intended to limit the present invention. The scope of the present invention should be construed according to the following claims, and all the techniques within the scope of equivalents should be construed as being included in the scope of the present invention.

210, 220: Display
230, 430, 440: lens
300, 500: stereoscopic image reproducing device

Claims (8)

A reproducing apparatus for synchronously reproducing the first stereoscopic image content and the second stereoscopic image content generated in the non-spectacle 3D manner;
Wherein the first and second screens are arranged on the same vertical plane and display the reproduced image of the first stereoscopic image content on a first screen, A non-eyeglass 3D display device for displaying a reproduced image of stereoscopic image content on a second screen;
A first lens that is inclined with respect to the non-eyeglass 3D display device by an inclination of a predetermined angle and refracts a first stereoscopic image displayed on the first screen to generate a first hologram; And
And a second lens for refracting a second stereoscopic image spatially floated in the second area to be inclined by a predetermined angle with the non-spectacle 3D display device and generating a second hologram,
A 3D hologram imaging system using a spectacles 3D image. [2] The apparatus according to claim 1, wherein the spectacles 3D display apparatus is disposed at any one of a floor, a ceiling, and a horizontal plane between the floor and the ceiling, and the first screen and the second screen are spaced apart from each other by a predetermined distance Multilayer Hologram Implementation System Using 3D Glasses without Glasses. The apparatus of claim 1, wherein the spectacles 3D display apparatus includes two separate display panels, wherein the first display panel of the two separate displays becomes a first screen and the second display panel becomes a second screen Wherein the hologram is formed on a substrate. [2] The apparatus of claim 1, wherein the first lens and the second lens are a TWO WAY MIRROR having a mirror on one side and a window on the other side, and a mirror of the two-way mirror is disposed to face the display device Multilayer Hologram Implementation System Using 3D Glasses without Glasses. The method of claim 1, wherein the reproducing apparatus obtains the content of the first stereoscopic image and the content of the second stereoscopic image generated by the non-spectacle 3D method, and acquires the content of the obtained multi-viewpoint first stereoscopic image and the content of the second stereoscopic image The method of claim 1 or 2, wherein the first stereoscopic image raster file and the second stereoscopic image raster file are synchronously reproduced after the content is bundled into one file, and then a raster file is generated. system. The method according to claim 1,
Wherein the slopes of the first lens and the second lens are parallel or perpendicular to each other. A reproducing apparatus for synchronously reproducing the first stereoscopic image content and the second stereoscopic image content generated in the non-spectacle 3D manner;
A first non-spectacle 3D display device for displaying a reproduced image of the first stereoscopic image content;
Eye 3D display device is arranged at a predetermined distance on a plane perpendicular to a plane on which the first non-eyeglass 3D display device is disposed, and a display image of the second stereoscopic image content is displayed A second non-eyeglass 3D display device;
A third lens for generating a hologram by refracting a second stereoscopic image displayed by the second non-spectacle 3D display device and tilted by a predetermined angle with the second non-spectacle 3D display device,
Lt; / RTI >
Wherein the predetermined interval is a sum of a maximum pop-out distance of the first stereoscopic image, a maximum depth depth distance of the second stereoscopic image, an optimal distance between the first stereoscopic image and the second stereoscopic image, Of the first stereoscopic image and the maximum depth-in-distance of the second stereoscopic image is 0.5 times the height of the non-stereoscopic 3D display, Wherein the distance d between the non-eyeglasses 3D displays is equal to or greater than zero and less than or equal to twice the height h of the first non-glasses 3D display. The method of claim 7, wherein the reproducing apparatus obtains the content of the first stereoscopic image and the content of the second stereoscopic image generated by the non-spectacles 3D method, and acquires the content of the obtained multi-viewpoint first stereoscopic image and the content of the second stereoscopic image The method of claim 1 or 2, wherein the first stereoscopic image raster file and the second stereoscopic image raster file are synchronously reproduced after the content is bundled into one file, and then a raster file is generated. system.

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