JP2000207582A - Image processing method and image processor using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain the normality of image display when an object operated by a player collides another object by setting plural viewpoints in virtual three- dimensional space and appropriately switching them to display an object projected on a two-dimensional plane. SOLUTION: A preview is started (step S1), and when it is detected that a racing car as an object collides with a course wall (step S5), switching of a viewpoint coordinates is performed (step S6). When the display of the preview is over and a game is carried out (step S7), an arithmetic processing part reads polygon data from a ROM (step S8), converts them into two-dimensional plane polygon data (step S9), pastes texture, generates image data for one picture by sorting them in a depth direction and stores them in a video memory. And, the image data in the video memory are successively read and a game picture is displayed (step S10).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image for projecting a plurality of polygon data constituting an object arranged in a virtual three-dimensional space onto a two-dimensional surface based on predetermined viewpoint coordinates, and displaying the projected image on a screen. The present invention relates to a processing method and an image processing apparatus using the same. In particular, an image processing method characterized by a display control method of the object when a collision occurs between a course wall and an object in a game such as a car race executed on a video game device as an image processing device, and
The present invention relates to an image processing device using the same.

[0002]

2. Description of the Related Art It is known that a player operates an object such as a car traveling on a course in a virtual space displayed on an image display screen by a player to execute a racing game in which a speed is competed by a game device.

FIG. 7 is an external perspective view of an example of a game device for a car racing game as an image processing device.
The game device has an image display monitor 2 facing a seat 1 on which a player sits. The traveling direction of the racing car operated by the player is controlled by the steering wheel 3.

Further, the user operates the shift lever 4, the accelerator pedal 5, and the brake petal 6 in the same manner as in an actual car, and operates the speed of the racing car operated by the driver so as not to collide with another object to play the game. Proceed.

A speaker 7 is built in the seat 1 at a position corresponding to the player's head. Therefore, the player can hear the sound effect during racing while the game is running.

FIG. 8 shows an example of a screen displayed on the image display monitor 2 during a racing game. Racing course 1
The traveling course and speed of the own vehicle are controlled so that the vehicle does not collide with another vehicle 12 traveling on zero.

Here, in general, during a racing game,
An image is displayed from the viewpoint of the driver's seat of the racing car operated by the amusement vehicle. Alternatively, as shown in FIG. 8, an image from the viewpoint of a third person placed behind the racing car 11 operated by the amusement vehicle is displayed so that the entire course 10 can be easily grasped.

FIG. 9 is a view for explaining the principle of displaying an image in a virtual three-dimensional space as shown in FIG. An object such as a racing car, a building, a course wall and the like is constituted and displayed by a plurality of polygon data having three-dimensional coordinate data.

In FIG. 9, a racing car 110 composed of polygons having three-dimensional coordinates placed in a virtual three-dimensional space of Xw, Yw and Zw axes is viewed from a viewpoint O as x, y2
The projection is performed on the two-dimensional plane 20. Image 1 projected on two-dimensional surface 20
Reference numeral 1 denotes a racing car operated by the amusement vehicle in FIG.

Therefore, the viewpoint O is a driver's seat of the racing car 110 conventionally formed of polygons having three-dimensional coordinates placed in a virtual three-dimensional space, or a viewpoint of a third person behind the racing car 110. .

On the other hand, in a game device for executing a racing game or the like, while the player is not executing the game,
A preview screen that suggests the game content is displayed to invite the player to execute the game.

[0012]

Here, in most cases, a screen similar to that during a game is conventionally displayed as a preview screen. That is, in the same way as during the game, the viewpoint O in the virtual three-dimensional space is projected exclusively on the seat of the racing car or the viewpoint of a third person behind the racing sinker to project the object in the virtual three-dimensional space onto the two-dimensional plane. The screen obtained by the above was used. Further, the viewpoint was based on only one viewpoint. Since the preview screen invites the player to participate in the game, it is desirable to display the preview screen using a more powerful screen.

FIG. 7 shows an example of a game device in a play facility. On the other hand, in a home,
The same racing game can be executed by connecting the video game device body to a TV monitor. In this case, some game programs allow a player to reproduce, that is, replay, a game executed by the player.

When performing such a replay, the program may be reproduced with the camera point of view positioned on both sides of the racing car and as close to the ground as possible so as to give a powerful force to the image being reproduced. Can be

However, in a previously executed game to be reproduced, there is a case where a player hits a racing car against a course wall. In this case, the camera viewpoint enters the inside of the course wall. Cases are also assumed. And when the camera viewpoint enters the inside of the course wall,
The video does not match the virtual reality image.

Accordingly, an object of the present invention is to set a plurality of viewpoints in a virtual three-dimensional space, particularly when executing a game such as a car race, and switch the viewpoints appropriately to project the viewpoints on a two-dimensional plane. An object of the present invention is to provide an image processing method for displaying an object and an image processing apparatus using the same.

Further, a method of controlling the display of an object on a preview screen or a replay screen so as to maintain the normality of image display even when an object operated by a player collides with another object, It is to provide a game device used.

[0018]

The basic structure of an image processing method and an image processing apparatus according to the present invention for solving the above-mentioned problems is as follows. The present invention is directed to an image processing method and apparatus for projecting onto a two-dimensional surface based on coordinates and displaying the projected image on a screen.

In the image processing method, a moving first object and a second object different from the first object are arranged in the virtual three-dimensional space. Move in accordance with the movement of the first object, and set a plurality of viewpoints for capturing the movement state of the first object, and a viewpoint serving as a reference among the plurality of viewpoints is located in the second object. In this case, the viewpoint is switched so that another viewpoint among the plurality of viewpoints is used as a reference.

In addition, the image processing apparatus includes: a plurality of polygon data constituting an object in a virtual three-dimensional space; a memory for storing a racing game program; and a plurality of viewpoint coordinates based on the plurality of polygon data in accordance with the racing game program. An arithmetic processing unit for converting the data into two-dimensional surface polygon data based on a reference; an image synthesizing unit for pasting the texture data to the converted two-dimensional surface polygon data to form screen data in accordance with the priority; Are stored for one screen and sequentially output to a display device.

First, when the object collides with another object, the plurality of viewpoint coordinates are switched in accordance with the racing game program, and the object is converted into two-dimensional polygon data based on the switched viewpoint coordinates. It is characterized by being converted into.

Further, the object is a racing car in a car racing game, the other object is a racing course wall, and the plurality of viewpoint coordinates are determined by the arithmetic processing unit in accordance with a racing game program. It is set when previewing a racing game or displaying a replay screen.

Further features of the present invention will become apparent from the embodiments of the present invention described below.

[0024]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or similar components will be described with the same reference numerals or reference symbols.

FIG. 1 is a block diagram showing a configuration example of a game apparatus as an image processing apparatus to which the present invention is applied. Each block element configuring the game device transmits and receives data via the bus BS. The arithmetic processing unit 100 includes a ROM 101
And a CPU for executing a game program stored in the CPU. Therefore, the arithmetic processing unit 100 functions as a game progress control unit that controls the progress of the game.

The ROM 101 further stores polygon data constituting the object. The polygon data is stored in the arithmetic processing unit 100 according to the progress of the game program.
Is read and subjected to coordinate conversion.

That is, as shown in FIG. 9, the arithmetic processing unit 100 converts the coordinates of the object in the virtual three-dimensional space into x, y two-dimensional coordinates. The image synthesis unit 102
It has a function of pasting texture data for each pixel based on the texture memory address included in each polygon data to the polygon converted into the x, y two-dimensional coordinates.

Further, the image synthesizing unit 102 sorts the overlapping polygons in the depth direction, and
4 is stored. Polygon data for one screen with high priority stored in the Z buffer 104 is used as image data.
Write to the video memory 105.

The image data stored in the video memory 105 is sequentially and repeatedly sent to the display device 106 for display.

The input operation unit 107 is operated by a player while watching an image displayed on the display device 106. FIG.
In the game device shown in FIG. 1, the input operation unit 107 includes a steering wheel 3, a shift lever 4, an accelerator pedal 5, and a brake pedal 6.

FIG. 2 is an operation flowchart of the embodiment of the present invention. FIG. 3 shows an example in which the object is a racing car as an embodiment of the present invention. In FIG. 3, the present invention has two viewpoints O1 and O2. FIG. 4 is an example of an image based on the viewpoint O2 in FIG.

By displaying an image different from that during the game execution on the preview screen or the replay screen, the impact of inviting the player to participate in the game can be increased, and the replay screen can be displayed with enhanced power. It is possible to

Returning to the operation flow of FIG. 2, when the preview starts (step S1), the arithmetic processing unit 100 reads polygon data from the ROM 101 according to the preview control program stored in the ROM 101 (step S2).

This is converted into two-dimensional surface polygon data shown in FIG. 9 (step S3), and a texture is pasted on the converted two-dimensional surface polygon data by the image synthesizing unit 102, and sorted in the depth direction. Thus, image data for one screen is generated and stored in the video memory 105.

The image data stored in the video memory 105 is sequentially read and displayed, and a preview screen or a replay screen is displayed (step S4).

Here, in the preview display or the replay display, displaying the state of collision between an object and another object due to a player's operation error that occurs during the actual game requires a strong participation of the player in the game. Become a solicitation stimulus.

Therefore, according to the present invention, when the preview display or the control for displaying the collision screen by the replay display program is performed, the coincidence of the coordinates of the objects is detected. For example, assume that the racing car 11 as an object collides with the course wall 200 as shown in FIG.

At this time, the viewpoint O 2 enters the inside of the course wall 2. Therefore, the image displayed on the basis of the viewpoint O2 as shown in FIG. 4 indicates an abnormal image observed from the inside of the course wall 2. For this,
In the present invention, when a collision is detected (Step S5), the viewpoint coordinates are switched (Step S6).

Therefore, for such control, the arithmetic processing unit 100 functions as a viewpoint position setting means for setting a viewpoint position, and further as a viewpoint position resetting means for switching viewpoint coordinates as control at the time of collision. Function.

In the example of FIG. 5, when the coordinates of the portion P of the racing car 11 match the coordinates of the course wall 200, it can be considered that a collision has occurred. In this case, control is performed so that the viewpoint O2 is switched to the viewpoint O1, and conversion to two-dimensional coordinates (step S3) is performed based on this.

Therefore, after switching to the viewpoint O1, FIG.
And the image is displayed normally.

Returning to FIG. 2, the display of the preview is completed.
When the game is executed (step S7), the arithmetic processing unit 1
00, polygon data is read from the ROM 101 in accordance with the game program stored in the ROM 101 (step S8).

This is converted into two-dimensional surface polygon data shown in FIG. 9 (step S9), and a texture is pasted on the converted two-dimensional surface polygon data by the image synthesizing unit 102 and sorted in the depth direction. Thus, image data for one screen is generated and stored in the video memory 105.

The image data stored in the video memory 105 is sequentially read out and a game screen is displayed (step S).
10). Note that the game screen is displayed on the input operation unit 10 of the player.
7 is controlled by the game program so as to change in accordance with the operation on.

In the above description, as an embodiment, a car race has been taken as an example, and accordingly, the viewpoint coordinates switching at the time of a collision of a racing car has been described. However, the present invention is not limited to this. In other racing games, the display of an object to be operated by a player is displayed based on a plurality of viewpoints, and when a collision is detected, a predetermined calculation process is performed to calculate a viewpoint that is not located in another object. By switching to a viewpoint according to the calculation result and displaying the image, it is possible to display an image without a sense of discomfort.

In FIG. 5, the coincidence between the coordinates P of the racing car as the object operated by the player and the course wall is determined as a collision, but the present invention is not limited to this. For example, when the coordinates of the viewpoint O1 or O2 coincide with the coordinates of the course wall 200, it is possible to determine that a collision has occurred.

Even in this case, since the viewpoint coordinates do not enter the inside of the course wall 200, an abnormal image is not displayed.

Although the operation flow in FIG. 2 assumes image processing at the time of preview, the present invention is not limited to this. After running the game, as described earlier,
In the replay screen for reproducing the game content, it is possible to set a plurality of viewpoints so as to increase the power, and control the display so as to switch and display the viewpoints.

[0049]

As described above with reference to the drawings, the present invention performs display based on a plurality of viewpoints. That is, for example, in a racing game, a plurality of viewpoints are set, and when an object displayed based on one viewpoint coordinate collides with another object, an image is displayed by switching to another viewpoint coordinate. is there.

Thus, it is possible to avoid displaying an image based on the viewpoint coordinates in a state where the image is hidden by the object at the time of collision. Therefore, it is possible to display a powerful game image without a sense of incongruity.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration example of a game device to which the present invention is applied.

FIG. 2 is an operation flowchart of the embodiment of the present invention.

FIG. 3 is an example in which an object is a racing car as an embodiment of the present invention.

FIG. 4 is an example of an image based on a viewpoint O2 in FIG. 3;

FIG. 5 is a diagram illustrating the coincidence of coordinates between objects, that is, a collision.

FIG. 6 is a diagram illustrating image display by switching viewpoint coordinates.

FIG. 7 is an external perspective view of an example of a game device for a car racing game.

FIG. 8 is an example of a screen displayed on the image display monitor 2 during a racing game.

9 is a diagram illustrating the principle of displaying an image in a virtual three-dimensional space as shown in FIG.

[Explanation of symbols]

 Reference Signs List 10 racing course 11 racing car to be operated by player 12 other racing car 100 arithmetic processing unit 101 ROM 102 image synthesizing unit 103 texture data memory 104 Z buffer memory 105 video memory 106 display device 107 input operation unit

Continued on front page F-term (reference) 2C001 AA00 AA09 BA02 BA05 BC00 BC01 BC03 BC10 BD00 BD01 CA05 CB01 CC02 CC08 5B050 AA10 BA08 BA09 EA27 EA28 FA02 5B080 AA13 BA04 GA02 GA22 9A001 BB06 HH23 HH28 JJ76

Claims (9)

[Claims] 1. An image processing method for projecting a plurality of polygon data constituting an object arranged in a virtual three-dimensional space onto a two-dimensional surface based on predetermined viewpoint coordinates, and displaying the projected image on a screen, A first object to be moved and a second object different from the first object are arranged in the virtual three-dimensional space, and the first object is moved outside the first object according to the movement of the first object. Moving, and setting a plurality of viewpoints for capturing the moving state of the first object; and a viewpoint serving as a reference among the plurality of viewpoints is the second viewpoint.
An image processing method for performing viewpoint switching so as to use another viewpoint among the plurality of viewpoints as a reference when the object is located within the object. 2. The method according to claim 1, wherein the first object is a racing car in a racing game, the second object is a course wall defining a course of the racing game, Are two and are respectively arranged on both sides of the racing car. 3. An image processing method for projecting a plurality of polygon data constituting an object arranged in a virtual three-dimensional space onto a two-dimensional surface based on predetermined viewpoint coordinates, and displaying a projected image on a screen. And setting a plurality of viewpoint coordinates, switching the set plurality of viewpoint coordinates when the object collides with another object, and displaying a two-dimensional image obtained based on the switched viewpoint coordinates. Characteristic image processing method. 4. The car racing game according to claim 2, wherein the object is a racing car in a car racing game, the other object is a racing course wall, and the plurality of viewpoint coordinates are a preview of the car racing game or An image processing method, which is set when a replay screen is displayed. 5. An image display device for displaying an object whose movement is controlled in a three-dimensional virtual space on a display screen as an image viewed from a predetermined viewpoint, wherein the game progresses in the three-dimensional virtual space. Game progress control means for controlling; viewpoint position setting means for setting a first viewpoint position at which a first object is displayed on the display screen based on information from the game progress control means; When the first viewpoint position is located inside another object in the three-dimensional space, the viewpoint position is reset to a second viewpoint position that is not included inside other objects. An image processing apparatus comprising setting means. 6. A memory for storing a plurality of polygon data constituting an object arranged in a virtual three-dimensional space, a racing game program, and the plurality of polygon data based on a plurality of viewpoint coordinates in accordance with the racing game program. An arithmetic processing unit that converts the data into two-dimensional polygon data; an image synthesizing unit that pastes the texture data onto the two-dimensional polygon data converted by the arithmetic processing unit and forms screen data according to priority; A video memory for storing the image data constituted by the synthesizing unit for one screen and sequentially outputting the image data to a display device, wherein the arithmetic processing unit according to the racing game program, when the object collides with another object, Switching a plurality of viewpoint coordinates, and referencing the object based on the switched viewpoint coordinates. An image processing apparatus for converting into two-dimensional surface polygon data. 7. The vehicle according to claim 6, wherein the object is a racing car in a car racing game, the other object is a racing course wall, and the plurality of viewpoint coordinates are determined by the arithmetic processing unit in accordance with a racing game program. An image processing apparatus which is set when a preview screen of the car racing game is displayed. 8. A program for controlling image processing for projecting a plurality of polygon data constituting an object arranged in a virtual three-dimensional space onto a two-dimensional surface based on predetermined viewpoint coordinates and displaying the projected image on a screen. A first object that moves and a second object that is different from the first object are arranged in the virtual three-dimensional space, and the first object moves outside the first object. Move in accordance with, and set a plurality of viewpoints for capturing the moving state of the first object, and a viewpoint which is a reference among the plurality of viewpoints is the second viewpoint.
A recording medium storing a program for performing a viewpoint switching control so as to use another viewpoint among the plurality of viewpoints as a reference when located in the object. 9. The program according to claim 8, wherein the first object is a racing car in a racing game, the second object is a course wall defining a course of the racing game, and A recording medium storing a program, wherein the plurality of viewpoints are two, and the plurality of viewpoints are arranged on both sides of the racing car.