JPH0759945A - Electronic game device having dome screen - Google Patents

Abstract

PURPOSE:To provide an electronic game device using a virtual reality and having a dome screen. CONSTITUTION:An electronic game device converts three-dimensional coordinates P (x, y, z) of an object in a three-dimensional coordinate space to positional coordinates P' (X, Y, h) obtained by the perspective projection from an arbitrary view point (O) to a predetermined plane, displays the object on a display surface according to the converted positional coordinates P' (X, Y, h) and projects the object on a dome screen 4 by a dome projector 2. The display surface is placed in a position tangent to a segment interconnecting the arbitrary view point (O) and an end of the dome screen 4 (position spaced by a distahce (h) from the view point (O) in the direction of Z axis) to perspectively project the object represented by the three-dimensional coordinates on the display surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic game device using virtual reality, and more particularly to an electronic game device having a dome screen.

[0002]

2. Description of the Related Art Electronic amusement devices using display devices have become widespread. Among them, an electronic game device using virtual reality is being developed and popularized as a game device that allows users to enjoy the game while experiencing the reality.

According to the basic principle of the electronic game device using the virtual reality, the position and shape of the object relating to the image projected on the display device are all specified by the coordinates in the three-dimensional coordinate space.

Then, a viewpoint (virtual viewpoint) is set at an arbitrary position in this three-dimensional coordinate space, and the image projected on the TV monitor is a scene in which the space is viewed from that viewpoint. Furthermore, this scene is seen through a predetermined display plane,
Convert to two-dimensional coordinates projected on this display plane.

FIG. 5 is a diagram for explaining this. In the figure, P is a three-dimensional coordinate (x,
points located in y, z). This point P is projected on the two-dimensional projection surface 42 and becomes a point P '(X, Y, h). Therefore, when the point P is displayed on the display plane, it is converted into the two-dimensional coordinates P ′ (X, Y) of the two-dimensional projection plane 44 and displayed.

[0006]

On the other hand, in the field of image technology, it has been attempted to make a screen a dome shape with respect to a plane and project an image on the screen to increase image power. Therefore, it is an object of the present invention to provide a novel play device using such a dome screen in the above-mentioned electronic play device utilizing virtual reality.

[0007]

According to an electronic game apparatus according to the present invention, a three-dimensional coordinate P (x, y, z) of an object in a three-dimensional coordinate space is defined by a predetermined plane from an arbitrary viewpoint (O). Position coordinates P ′ on the predetermined plane obtained by perspective projection on
(X, Y, h) and the converted position coordinates P ′
It is assumed that the object is displayed on the display surface by (X, Y, h) and is projected on the dome screen by the dome projector.

The display surface is displayed on the arbitrary viewpoint (O).
And a position that is in contact with a line segment that connects the end of the dome screen with the end of the dome screen (position where the distance from the viewpoint (O) in the Z-axis direction is h)
Then, the object represented by the three-dimensional coordinates is perspectively projected on the display surface.

Further, the display surface is a liquid crystal display surface, and the dome projector irradiates light from behind the liquid crystal display surface to display the object displayed on the liquid crystal display surface on the dome screen. Configured to project.

Further, the dome projector has a fisheye lens at its tip, and the fisheye lens is arranged so as to be in the vicinity of the player's viewpoint (O).

[0011]

According to the present invention, the display surface is located at a position contacting with a line segment connecting the arbitrary viewpoint (O) and the end of the dome screen (position where the distance from the viewpoint (O) in the Z-axis direction is h). Then, the object represented by the three-dimensional coordinates is perspectively projected on the display surface.

Therefore, the object arranged in the three-dimensional coordinate space can be projected on the entire surface of the dome screen, and the object in the three-dimensional coordinate space can be displayed without distortion even in the periphery of the dome screen.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a conceptual diagram of an electronic play device using the dome screen of the present invention. In the figure, 1 is an electronic game device body. In the electronic game device body 1, the main central processing unit 10 processes data according to the game program as shown in the configuration diagram of FIG. 2, and the video signal is input to the dome projector 2.

The dome projector 2 displays a game image on a liquid crystal display plane (not shown) and projects the game image on the dome screen 4 by a light source emitted from behind the liquid crystal display plane.

The dome projector 2 has a fisheye lens 3 as an optical system for projecting on the dome screen 4. The position of the fish-eye lens 3 is located near the player's viewpoint O. In FIG. 1, on the dome screen 4, as an example of a game, a player is
Is displayed. ), And the content of knocking down the enemy objective 51 moving on the dome screen 4 is displayed.

Further, on the dome screen 4, a score or game progress information 52 is displayed. Also 53
Is an enemy objective or a planet in outer space.

Reference numeral 5 denotes a speaker, which displays a sound source output from the electronic game apparatus body 1 in synchronization with the video.

FIG. 2 shows an example of the structure of the electronic game apparatus body 1. In FIG. 2, reference numeral 101 is a storage circuit having a fixed storage memory (ROM) for storing a game program and a writable / readable memory (RAM) for storing detailed settings of the program and other information.

The main central processing unit 10 includes a memory circuit 10
The game program stored in the ROM is executed while referring to the content stored in the RAM 1.

Reference numeral 11 denotes an auxiliary arithmetic processing unit (co-processor), which is used to particularly assist the main central arithmetic processing unit 10 in calculation, and performs arithmetic operations such as coordinate conversion at high speed. Reference numeral 111 is a storage circuit having a ROM and a RAM used for the arithmetic processing of the auxiliary arithmetic processing unit 11.

Reference numeral 15 denotes a signal transmission / reception control interface, which receives signals from a handle, a switch, etc., which is provided outside the electronic game apparatus main body 1 and is operated by a player (not shown), and the main central processing unit 11 etc. It is a circuit having an interface function for externally inputting a signal for displaying a lamp or the like from the electronic game apparatus body 1.

Reference numeral 16 is an interface circuit for generating a predetermined music or sound effect based on an instruction from the main central processing unit 10, amplifying the generated sound source, and outputting it to the speaker 5.

Reference numeral 12 is a polygon parameter memory. In the polygon parameter memory 12, the position of the player (the position of the spaceship in the embodiment of FIG. 1) sent from the main central processing unit 10 during the progress of the game program, the enemy objective 51, and other display units. The position information (polygon data) of the objects 52, 53, etc. is stored.

Here, the polygon data means that a solid is constructed by a plurality of polygons, an object is regarded as an aggregate of a plurality of polygonal plates, and the position on the three-dimensional coordinate represented by the polygonal unit. This is information data.

Reference numeral 13 denotes a processing device dedicated to screen coordinate conversion. This is a processor that performs coordinate conversion processing such that the three-dimensional coordinate polygon data from the polygon parameter memory 12 is projected onto the dome screen 4.

This screen coordinate conversion dedicated processing device 13
On the other hand, a memory circuit 131 having a ROM and a RAM is provided. And the conversion process to the above screen coordinates is
It is executed by the program stored in the ROM of the storage circuit 131. The RAM of the storage circuit 131 stores data that is being converted.

Here, a method of converting the polygon data of three-dimensional coordinates into screen coordinates is one of the features of the present invention.

This method will be described with reference to FIGS. FIG. 3 shows the XZ plane, and FIG. 4 shows the YZ plane.
In the figure, 4 is a dome screen. Now, it is considered that the liquid crystal display panel whose display is controlled by the image data created by the electronic game apparatus body 1 is at the position 41 in the figure.

That is, when the liquid crystal display plate is placed at the position 41 of the dome screen 4 and the image object represented by the three-dimensional coordinates is projected according to the method for converting the three-dimensional coordinates into the plane as described in FIG. The object in the peripheral portion of the screen 4 is out of the projection range on the liquid crystal display plate 41.

Therefore, in the present invention, the position 4 contacting the line segments 42 and 43 connecting the viewpoint O and the end of the dome screen 4 is used.
The liquid crystal display plate is placed at 0 (the distance from the viewpoint O in the Z-axis direction is h), and the image object represented by the three-dimensional coordinates is projected on it.

As a result, the image target range represented by the three-dimensional coordinates projected on the dome screen 4 and the image target range projected on the liquid crystal display plate at the position 40 coincide with each other.

Therefore, considering the image target point P (x, y, z) represented by three-dimensional coordinates, the point P '(X, Y, h) projected on the liquid crystal display panel at the position 40 is as follows. It is converted by the conversion formula of. X = hx / z, Y = hy / z, Z = z-h

The polygon data, which is the coordinate data of the projection point of the liquid crystal display panel at the position 40 thus coordinate-converted, is
It is guided to the polygon paint device 14. The polygon paint device 14 writes polygon data in the frame memory 141. When the writing of all polygon data is completed, it is read and output to the dome projector 2.

The dome projector 2 displays an object at the two-dimensional coordinate position of the liquid crystal display plate corresponding to the coordinates converted as described in FIG. 1, and projects it on the dome screen 4 by the fisheye lens 3.

In the above description, the polygon processing is used as an example of the representation method of the object in the three-dimensional space. However, the present invention is not limited to this, and is similarly applied to the patch processing. It is possible.

[0036]

As described above, according to the present invention,
It is possible to project the game image on the dome screen. Therefore, it is possible to further increase the power of the game image.

Further, since the image projected on the entire surface of the dome screen can be captured, it is possible to display the image around the dome screen without distortion.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of an electronic game device of the present invention.

FIG. 2 is a block diagram of an embodiment of the electronic game apparatus body of the present invention.

FIG. 3 is an explanatory diagram (XZ plane) of coordinate conversion of the present invention.

FIG. 4 is an explanatory diagram (YZ plane) of coordinate conversion of the present invention.

FIG. 5 is an explanatory diagram of a three-dimensional coordinate space and a two-dimensional projection plane.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic game device 2 Dome projector 3 Fisheye lens 4 Dome screen 5 Speaker O viewpoint 10 Main central processing unit 11 Auxiliary processing unit 12 Polygon parameter memory 13 Screen coordinate conversion dedicated processing unit 14 Polygon paint processing unit

Claims (3)

[Claims] 1. A predetermined plane obtained by perspectively projecting three-dimensional coordinates P (x, y, z) of an object in a three-dimensional coordinate space from an arbitrary viewpoint (O) onto a predetermined plane. Position coordinate P '
(X, Y, h) and the converted position coordinates P ′
In an electronic game device in which the object is displayed on the display surface by (X, Y, h) and is projected on the dome screen (4) by the dome projector (2), the display surface is displayed at the arbitrary viewpoint (O). ) And the end of the dome screen (4) are in contact with a line segment (42, 43) (a position where the distance from the viewpoint (O) in the Z-axis direction is h) is three-dimensional on the display surface. An electronic amusement device having a dome screen, wherein the object represented by coordinates is perspectively projected. 2. The display surface according to claim 1, wherein the display surface is a liquid crystal display surface, and the dome projector (2) irradiates light from behind the liquid crystal display surface to display on the liquid crystal display surface. An electronic game device having a dome screen, characterized in that it is configured to project the object onto the dome screen (4). 3. The dome projector (2) according to claim 2, wherein the dome projector (2) has a fisheye lens (3) at a tip thereof, and the fisheye lens (3) is arranged near a player's viewpoint (O). An electronic game device having a dome screen characterized by: