WO2010098159A1

WO2010098159A1 - Stereoscopic display device

Info

Publication number: WO2010098159A1
Application number: PCT/JP2010/050787
Authority: WO
Inventors: 篤山中; 滋千葉
Original assignee: シャープ株式会社
Priority date: 2009-02-24
Filing date: 2010-01-22
Publication date: 2010-09-02
Also published as: JPWO2010098159A1

Abstract

Focusing on perceptual psychological elements advocated by James Gibson, disclosed is a stereoscopic display device for which there is a strong feeling that a stereoscopically reproduced image comes out, and there is a high realistic sensation. A stereoscopic display device (100) is formed with the respective edges of first and second stereoscopic display panels (101, 102) connected by means of a hinge mechanism (103), can vary, when folded back from the hinge mechanism (103), the angle (α) formed by the two stereoscopic display panels (101, 102) in at least the range from a prescribed angle of 90° or more to the angle formed when the lower second stereoscopic display panel (102) is covered by the upper first stereoscopic display panel (101), and stereoscopically displays a single stereoscopic image to be reproduced on the lower second stereoscopic display panel (102) by means of the first and second stereoscopic display panels (101, 102).

Description

3D display device

The present invention relates to a stereoscopic display device for realizing high presence.

Recently, with the widespread use of large-screen TVs and the start of high-definition digital broadcasting, the environment for enjoying large-screen high-definition video at home has been established for 2D video. On the other hand, as a next-generation video system, there is an increasing expectation for a highly realistic video system with stereoscopic display.

FIG. 9A is a diagram showing the appearance of a conventional stereoscopic display 1000. As shown in the figure, the stereoscopic display 1000 is configured by supporting a stereoscopic display panel 1001 having a display surface on the front side by a support mechanism 1002. Normally, the stereoscopic display 1000 is installed on a substantially horizontal surface and is designed so that the normal direction of the display surface of the stereoscopic display panel 1001 can be finely adjusted around the horizontal direction.
The methods used for the stereoscopic display panel 1001 include a method with glasses that requires an observer to wear dedicated glasses, and a method without glasses that does not require dedicated glasses. There is a lenticular lens system.

FIG. 9B shows a principle diagram of the parallax barrier method. The display 1003 has a pixel structure, and the pixels are divided into two groups for each column, and a right-eye video is displayed on one side and a left-eye video is displayed on the other side. A parallax barrier 1004 is disposed on the front surface of the display 1003. The parallax barrier 1004 is an optical film in which a light transmitting portion 1004a and a non-transmitting portion 1004b are repeated at substantially the same pitch as the vertical column of pixels, and appear as a vertical stripe pattern.

A glass substrate is usually present between the display surface of the display 1003 and the parallax barrier 1004 and is arranged with a certain distance. Therefore, as shown in FIG. 9B, when the transmissive portion 1004a is disposed between the left and right pixel groups, only the right eye pixel group and the left eye pixel group are visible. An area can be created. Therefore, by adjusting the interval of the area where only one of the pixel groups is visible to the width of the eye, it is possible to independently present the right eye image and the left eye image to the left and right eyes of the observer. A stereoscopic effect can be produced in the observer's vision.
Even in a method other than the parallax barrier method, the principle of generating a stereoscopic effect in the viewer's vision by presenting independent images to the left and right eyes of the viewer is the same.

A position where a three-dimensional reproduction image is generated when the left and right videos are presented to the observer's eyes as described above will be described.
In FIG. 10, a right-eye image 1005 and a left-eye image 1006 are displayed on the stereoscopic display panel 1001, and the right-eye image 1005 is displayed on the left side from the left-eye image 1006 toward the screen. Is shown. In this case, under the condition that the left and

right eyes

1007 and 1008 of the observer are in a position where only the corresponding image on the stereoscopic display panel 1001 can be seen, the image passes through the optical path indicated by the arrow in the drawing, and the image is displayed on each eye of the observer. Will be communicated.
Then, when there are similar left and right images in the observer's vision, these are recognized as light rays from an integrated three-dimensional object, so that in principle, there is a three-dimensional reproduction image 1009 in front of the three-dimensional display 1000. It will be perceived.

JP 2005-102198 A

However, in reality, in the stereoscopic display device configured as in the above-described conventional example, even if the stereoscopic reproduction image is designed to be formed in the foreground and displayed, the reproduction image is in the stereoscopic display device or near the surface. However, it was not always possible to give the impression of jumping out to the front.
As an important perceptual psychological finding in solving this problem, there is a ground theory in Gibson's spatial perception (see Non-Patent Document 1). According to this theory, "the various objects in the natural space are perceptually structured with the ground on which they are placed, and they exist in relation to each other." Especially in depth perception, he points out that "the continuous surface existing between the observer and the object is an important defining factor".

The present invention focuses on the perceptual psychological elements advocated by James Gibson described above, and an object of the present invention is to provide a stereoscopic display device with a high sense of popping out of a stereoscopic reproduction image and a high presence.

In order to solve the above-described problem, a first technical means of the present invention is a stereoscopic display device, and each of the two stereoscopic display panels is connected to each other by a hinge mechanism. An angle formed by two stereoscopic display panels is variable within a range of a predetermined angle of 90 ° or more and an angle at which the lower stereoscopic display panel is covered with the upper stereoscopic display panel, and the two stereoscopic display panels Thus, a stereoscopic display is performed so that one stereoscopic video is reproduced on the lower stereoscopic display panel.

According to a second technical means of the present invention, in the first technical means, the lower stereoscopic display panel has a flat display portion having a flat display surface at the end opposite to the hinge mechanism. And a display surface having a curved surface display portion formed in a curved shape that is continuous with the display surface of the flat display portion and warps from the display surface of the flat display portion at an end of the hinge mechanism side. It is what.

According to a third technical means of the present invention, in the first or second technical means, an angle sensor for detecting an angle formed by the two three-dimensional display panels, and the three-dimensional display based on a detection result of the angle sensor. And a stereoscopic video generation unit that generates data to be used.

According to the present invention, since the stereoscopic display panel is provided also in the horizontal direction (the ground direction), it is possible to display a stereoscopic image in the ground direction that is essential for enhancing the sense of popping out of the stereoscopic reproduction image, that is, the sense of presence. In addition, since the hinge portion is provided between the two three-dimensional display panels, it can be bent and folded from the hinge portion when not in use, so that storage and transportation are easy.

1 is a diagram illustrating an appearance of an example of a stereoscopic display device of Embodiment 1. FIG. It is a figure explaining having made variable the angle which two stereoscopic display panels of the stereoscopic display apparatus of FIG. 1 comprise. FIG. 6 is a diagram illustrating a stereoscopic reproduction image displayed in the first embodiment. It is a figure explaining an example of the three-dimensional display apparatus of Embodiment 2. FIG. It is a figure explaining the structural example of the three-dimensional display apparatus of Embodiment 3. FIG. It is a figure explaining the observer's viewpoint position on the basis of the three-dimensional display apparatus assumed in the three-dimensional video generation part 107 of FIG. It is a figure which shows an example of the three-dimensional image displayed with the three-dimensional display apparatus 400 of FIG. FIG. 6 is a diagram illustrating another example of a stereoscopic image displayed on the stereoscopic display device 400 of FIG. 5. It is a figure explaining the external appearance and display system of the conventional three-dimensional display. It is a figure explaining the position of the three-dimensional reproduction image displayed with the conventional three-dimensional display. It is a figure explaining the three-dimensional reproduction image displayed with the conventional three-dimensional display.

Hereinafter, preferred embodiments according to the stereoscopic display device of the present invention will be described in detail with reference to the drawings.

<Embodiment 1>
The image display portion of the conventional stereoscopic display device is usually a single plane, and the observer observes from a substantially normal direction with respect to the display surface. FIG. 11 shows a state in which a stereoscopic reproduction image is projected and displayed in front of the display surface in a conventional stereoscopic display device. As described with reference to FIG. 10, the left and

right eye images

1005 and 1006 are displayed, and the shift length (parallax amount) on the screen is determined based on the positions of the

eyes

1007 and 1008 of the observer and the left and right eyes. If calculated from the width and set, theoretically, the position of the stereoscopic reproduction image 1009 can be reproduced at an arbitrary position between the stereoscopic display device and the eye from the geometrical relationship.

However, even if a stereoscopic display device is actually manufactured and the parallax amount is calculated as described above to display the video for the left and right eyes, it may not be perceived as being present at the calculated position of the reproduced image. there were.
This is thought to be due to the characteristics of human spatial perception. Actually, the stereoscopic reproduction image looks as shown in FIG. 11 when viewed from the observer, but the stereoscopic reproduction image 1010 is naturally displayed only within the field of view of the stereoscopic display device as viewed from the observer. Only a 3D reconstructed image floating in the air can be displayed.

Here, according to the ground theory developed by James Gibson, a well-known researcher in human spatial perception, in the book “Ecological Visualism” in Non-Patent Document 1, in human spatial perception, The continuous surface that exists between the objects is an important determinant. "" Various objects in natural space are perceptually structured and understood with the ground on which they are placed. "

Therefore, in the stereoscopic reproduction image created by the conventional stereoscopic display device shown in FIG. 11, since the ground connection from the observer to the stereoscopic reproduction image is broken, the stereoscopic reproduction image should be displayed geometrically optically. It can be understood that the result is that the three-dimensional reproduced image does not feel as if it existed at the place.

The present invention has been made to solve such problems of the conventional method based on understanding of human spatial perception characteristics, and has, for example, a configuration as shown in FIG.

FIG. 1 is an external view showing an example of the stereoscopic display device according to the first embodiment. In the figure, a stereoscopic display device 100 includes first and second

stereoscopic display panels

101 and 102. In the present embodiment, the display surfaces of both

panels

101 and 102 are flat. The stereoscopic display device 100 is configured by connecting the end portions of the first and second

stereoscopic display panels

101 and 102 with a hinge mechanism 103. By this hinge mechanism 103, an angle formed by the first and second stereoscopic display panels 101 and 102 (an angle formed by both display surfaces) α is, for example, 0 ° (the normal directions of both display surfaces are parallel and reverse). The angle is variable within a range of from 180 degrees (an angle in which the normal direction is parallel and in the same direction). A parallax barrier method is used for the first and second

stereoscopic display panels

101 and 102.

In the 3D display device 100, in the use state where the angle α formed by the first and second

3D display panels

101 and 102 is a predetermined angle, for example, as shown in FIG. In this state, an image is also displayed on the second stereoscopic display panel 102 arranged on the lower side in addition to the first stereoscopic display panel 101, and is viewed on the second stereoscopic display panel 102 as viewed from the observer. One stereoscopic video is played back. As a result, as described later, it is possible to enhance the sense of popping out of the stereoscopic reproduction video and enhance the sense of reality. Note that the angle α assumed in the usage state of the stereoscopic display device 100 is not limited to 90 °, and may be larger than 90 ° as shown in FIG.

In addition, when the stereoscopic display device 100 is not in use, the first stereoscopic display panel 101 is overlaid on the second stereoscopic display panel 102 as shown in FIG. Can do. Therefore, storage and transportation are facilitated. This is an essential effect for realizing portable devices for home use and office use.

Next, differences in functions between the stereoscopic display device 100 according to the first embodiment and the above-described conventional stereoscopic display panel will be described.

Since the stereoscopic display device 100 according to the first embodiment includes the upper and lower

stereoscopic display panels

101 and 102, by continuously displaying the left and right eye images on each of them, FIG. ), A stereoscopic reproduction image 201 connected to the ground can be displayed. When viewed from the observer, the stereoscopic display device 100 displays a stereoscopic reproduction image 202 shown in FIG.

From the observer's position, the observer passes through the desk on which the stereoscopic display device 100 is placed, for example, through the floor surface, and is further connected to the lower stereoscopic display panel 102, and a stereoscopic reproduction image is formed thereon. Since 201 is reproduced, the “continuous surface existing between the observer and the object” pointed out by James Gibson's ground theory is established. As a result, the

stereoscopic reproduction images

201 and 202 shown in FIGS. 3A and 3B are sensed with reality as if they existed on the lower stereoscopic display panel 102.
As described above, according to the first embodiment, it is possible to solve the reduction in the effect of popping out the three-dimensional reproduced image, which was a conventional problem, and to realize a high sense of reality.

<Embodiment 2>
FIG. 4 is an external view illustrating an example of the stereoscopic display device according to the second embodiment. The stereoscopic display device 300 shown in FIG. 4A is different from the stereoscopic display device 100 of FIG. 1 in the configuration of the lower second stereoscopic display panel 102 ′. Specifically, the lower second stereoscopic display panel 102 ′ has a flat stereoscopic display unit 104 having a flat display surface on the side opposite to the hinge mechanism 103, and a curved stereoscopic display on the hinge mechanism 103 side. Part 105. The curved three-dimensional display unit 105 is formed in a curved surface whose display surface is continuous with the display surface of the flat three-dimensional display unit 104 and warps from the display surface of the flat three-dimensional display unit 104. Via the first 3D display panel 101. Each of the planar stereoscopic display unit 104 and the curved stereoscopic display unit 105 can be configured by, for example, one stereoscopic display panel.

By providing such a second stereoscopic display panel 102 ′, in the stereoscopic display device 300, a portion that is the display surface of the second stereoscopic display panel 102 ′ and is close to the connection portion with the first stereoscopic display panel 101. Has a curved surface, and has the following effects. In other words, in the configuration of the embodiment in FIG. 1, the loss of reality of a stereoscopic reproduction image (stereoscopic virtual image) that can occur when the boundary between the first stereoscopic display panel 101 and the second stereoscopic display panel 102 is perceived by an observer. Can be prevented by gently changing the display surface of the connection portion as a curved surface, and the reality of the stereoscopic reproduction image can be maximized.

In the stereoscopic display device 300, when not in use, the first stereoscopic display panel 101 is placed on the second stereoscopic display panel 102 ′ by bending from the hinge mechanism 103 as shown in FIG. 4B. Can be stacked. Therefore, storage and transportation are easy.

<Embodiment 3>
FIG. 5 is a diagram illustrating an example of the stereoscopic display device according to the third embodiment. A stereoscopic display device 400 shown in FIG. 5A is obtained by adding the following two elements to the configuration of the stereoscopic display device 100 of FIG.
(A) A display surface angle sensor 106 that detects an angle formed by the first and second stereoscopic display panels 101 and 102 (display surfaces thereof).
(B) The output from the display surface angle sensor 106 is read to generate a three-dimensional image suitable for the angle formed by the first and second

stereoscopic display panels

101, 102, and the first and second stereoscopic display panels 101, 102 A stereoscopic video generation unit 107 that outputs a stereoscopic video signal to 102.

The display surface angle sensor 106 is built in, for example, the hinge mechanism 103 in FIG.
The stereoscopic video generation unit 107 operates, for example, according to the following procedure well known for generating stereoscopic video.
(1) First, a three-dimensional coordinate system is prepared, and a CG model desired to be displayed or a target data string calculated from a live action is prepared.
(2) Subsequently, the virtual camera position and the position / shape of the virtual screen for projecting the target data string are set.
(3) Then, using the virtual camera position as a reference point, the target data is projected onto the virtual screen to obtain a two-dimensional image.

In this example, since the binocular parallax barrier method is used as the stereoscopic display method, the virtual camera in the stereoscopic video generation unit 107 is a virtual stereo camera placed apart from the human eye (for example, 65 mm). Become. In addition, the two-dimensional video obtained by the stereoscopic video generation unit 107 is a set of two videos corresponding to the left and right virtual cameras of the virtual stereo camera.

Also, the virtual camera position described above is set to correspond to the coordinates of the viewpoint assuming the viewpoint position of the observer. The viewpoint position can be determined based on a preset value stored in advance. For example, in the first stereoscopic display panel 101, as shown in FIGS. 6A and 6B, the angle β between the upper end of the first stereoscopic display 101 and the line of sight is adjusted vertically by the observer. If the distance L (for example, 50 cm determined by usability experiment) between the upper end of the first stereoscopic display panel 101 and the viewer's eyes is determined on the assumption that the first stereoscopic display panel 101 is used, the coordinates of the viewpoint are set with reference to the stereoscopic display panel 101 Is determined. Based on this, the virtual camera position can be set.

Normally, the above-described virtual screen is defined (set) in a plane, but in this embodiment, the stereoscopic video generation unit 107 is based on the data of the display surface angle sensor 106, the first stereoscopic display panel 101, A virtual screen is set as a bent surface composed of the second stereoscopic display panel 102. Based on the bent virtual screen, a set of two-dimensional images to be displayed on the stereoscopic display device 400 is calculated.
According to the above procedure, when the viewer tilts the first stereoscopic display panel 101 and changes the angle α formed with the second stereoscopic display panel 102 in accordance with the movement of the viewpoint, the viewer is stabilized at a certain position. A stereoscopic reproduction image can be provided.

Examples of stereoscopic images reproduced by the

compatible display panels

101 and 102 when the angle α between the first stereoscopic display panel 101 and the second stereoscopic display panel 102 is 90 ° and 110 °, and in that case, An example of a stereoscopic image recognized by an observer of the entire display device 400 is shown in FIGS.

When the angle α is 90 °, the stereoscopic display device 400 causes the first stereoscopic display panel 101 to reproduce the stereoscopic image T1 of FIG. 7A and the second stereoscopic display panel 102 causes the display of FIG. The stereoscopic image T2 of B) is reproduced. At this time, for an observer who has an angle β with respect to the upper end of the first stereoscopic display panel 101 of 90 ° and a distance L of the set distance (50 cm) as the viewpoint position, as shown in FIG. A stereoscopic reproduction video T3 that rises from the floor and has a large pop-out effect from the display surface is displayed.

When the angle α is 110 °, the stereoscopic display device 400 causes the first stereoscopic display panel 101 to reproduce the stereoscopic image T4 in FIG. 8A, and the second stereoscopic display panel 102 causes the display of FIG. The stereoscopic image T5 of B) is reproduced. At this time, for an observer whose angle β with respect to the upper end of the first stereoscopic display panel 101 is 110 ° and the distance L is a set distance (50 cm) as a viewpoint position, as shown in FIG. The pop-out effect is large, and a stereoscopic reproduction video T6 as viewed from above is displayed as compared with FIG. 7C.

In the above-described example, the observer's viewpoint position, that is, the virtual camera position, used for calculation of the data for stereoscopic display is set based on the set value held in advance, but the apparatus for detecting the actual position of the observer ( A sensor system that tracks the distance and direction from the first three-dimensional display panel 101) may be added and set based on the detection result of the device.
The invention of this embodiment can be applied not only to the stereoscopic display device 100 of FIG. 1 but also to the stereoscopic display device 300 of FIG. In this case, since the shape of the display surface is different from that of FIG. 1, a virtual screen may be set to correspond to this.

In the above description, the parallax barrier method is used for the stereoscopic display panel, but other methods described in the background art can be used depending on the application.
In addition, the above-described three types of embodiments can be selected according to required specifications such as performance, cost, and compatibility with other members.

The stereoscopic display device of the present invention can be used for CG game play, 3D photo / movie appreciation, simulation result 3D visualization, 3D presentation, 3D digital signage, or 3D television broadcast viewing.

DESCRIPTION OF SYMBOLS 100,300,400 ... 3D display apparatus, 101 ... 1st 3D display panel, 102,102 '... 2nd 3D display panel, 103 ... Hinge mechanism, 104 ... Planar 3D display part, 105 ... Curved 3D display part, 106: Display surface angle sensor, 107 ... Stereoscopic image generation unit.

Claims

Ends of each of the two stereoscopic display panels are connected to each other by a hinge mechanism, and at least an angle formed by the two stereoscopic display panels is lower than a predetermined angle of 90 ° or more, the lower side The three-dimensional display panel is variable in the range of the angle at which the upper stereoscopic display panel is covered, and the two stereoscopic display panels allow a stereoscopic image to be reproduced on the lower stereoscopic display panel. A stereoscopic display device characterized by performing display.
The lower stereoscopic display panel has a flat display portion having a flat display surface at an end opposite to the hinge mechanism, and the display surface is at the flat end at the hinge mechanism side end. The stereoscopic display device according to claim 1, further comprising a curved surface display unit that is continuous with the display surface of the display unit and is formed in a curved shape that warps from the display surface of the flat display unit.
An angle sensor for detecting an angle formed by the two stereoscopic display panels;
The stereoscopic display device according to claim 1, further comprising: a stereoscopic video generation unit configured to generate data used for the stereoscopic display based on a detection result of the angle sensor.