Image processing device, image processing method, and game device and storage medium using the same

• US 5,830,066 A
• Filed: 07/10/1997
• Issued: 11/03/1998
• Est. Priority Date: 05/19/1995
• Status: Expired due to Fees

• Current Assignee: SEGA Corporation (SEGA Sammy Holdings Inc.)
• Original Assignee: Kabushiki Kaisha Sega Enterprises
• Inventors: Goden, Takeshi, Takano, Masaru
• Primary Examiner(s): MANUEL, GEORGE C
• Application Number:
  US08/765,813
• Time in Patent Office: 481 Days
• Field of Search: 463/30, 463/31, 463/32, 463/33, 463/34, 345/156, 345/157, 345/158, 345/355, 345/356, 345/357, 345/428, 345/439, 347/47
• US Class Current: 463/33
• CPC Class Codes: A63F 13/10 Control of the course of the game, e.g. start, progess, end
• CPC Class Codes: A63F 13/45 Controlling the progress of the video game
• CPC Class Codes: A63F 13/5258 by dynamically adapting the position of the virtual camera to keep a game object or game character in its viewing frustum, e.g. for tracking a character or a ball
• CPC Class Codes: A63F 13/803 Driving vehicles or craft, e.g. cars, airplanes, ships, robots or tanks
• CPC Class Codes: A63F 2300/64 for computing dynamical parameters of game objects, e.g. motion determination or computation of frictional forces for a virtual car
• CPC Class Codes: A63F 2300/66 for rendering three dimensional images
• CPC Class Codes: A63F 2300/663 for simulating liquid objects, e.g. water, gas, fog, snow, clouds
• CPC Class Codes: A63F 2300/6661 for changing the position of the virtual camera
• CPC Class Codes: A63F 2300/6684 by dynamically adapting its position to keep a game object in its viewing frustrum, e.g. for tracking a character or a ball
• CPC Class Codes: A63F 2300/8017 Driving on land or water; Flying
• CPC Class Codes: G06T 1/00 General purpose image data processing

Abstract

An object of this invention is to provide an image processing device which does not interrupt the flow of a game. The processing board in the main game device attaches information required by the player at the completion of each stage to a map and provides it to the player by displaying it on the display in the following way. The front edge of the truck 20 is displayed (FIG. 5(a)), and camera work is conducted showing the game characters 24, 25 riding in the truck 20 (FIG. 5(b)). In order that the relationship between the characters 24, 25 and the truck 20 can be appreciated, a bird'"'"'s-eye view is shown on the display 1a (FIG. 5(c)), and the camera work is moved again to diagonally above the characters 24, 25, and an enlarged display of the characters 24, 25 is shown (FIG. 5(d)). The map 26 is displayed such that it can be viewed from between the characters 24, 25 (FIG. 5(e)), and finally, the map 26 is displayed as an enlarged image (FIG. 5(f)).

Claims

1. In an image processing device which causes a moving object composed in three-dimensional spatial coordinates to move, and generates viewpoint images whereby said moving object is viewed from prescribed viewpoints, the image processing device comprising:

information representing object generating means for composing an information representing object whereby information relating to said moving object is represented in three-dimensional spatial coordinates.

2. An image processing device according to claim 1, wherein said information representing object generating means composes a planar object indicating the position of said moving object as said information representing object.

3. An image processing device according to claim 2, wherein said information representing object generating means causes said planar object to change from a folded state to an opened state.

4. An image processing device according to any one of claims 1 to 3, further comprising it comprises viewpoint moving means for moving said viewpoint such that, when said information representing object has been composed, both said moving object and said information representing object are displayed.

5. An image processing device according to claim 4, wherein said viewpoint moving means, further, moves said viewpoint towards said information representing object.

6. An image processing device according to any one of claims 1 to 5, further comprising display means for displaying said generated viewpoint image.

7. A game device which conducts a game whilst causing said moving object to move in three-dimensional spatial coordinates, characterized in that it comprises an image processing device according to any one of claims 1 to 6.

8. In an image processing method which generates viewpoint images whereby a moving object composed in three-dimensional spatial coordinates and an information representing object which represents information relating to this moving object are viewed from prescribed viewpoints, the image processing method comprising:

a first step whereby said viewpoint is moved to a position displaying said moving object only;

a second step whereby said viewpoint is moved to a position displaying both said moving object and said information representing object; and

a third step whereby said viewpoint is moved towards said information representing object such that said information representing object is displayed as a larger image.

9. An image processing device comprising:

view axis determining means for determining a view axis direction on the basis of;

a moving object composed in three-dimensional spatial coordinates;

a observation point located on the path through which said moving object is to pass subsequently;

a transit point located on the path through which said moving object has already passed; and

positional information for said observation point and positional information for said transit point.

10. An image processing device according to claim 9, wherein said view axis determining means determines the view axis direction on the basis of positional information for said observation point and said transit point located equidistantly in front of and behind said moving object.

11. An image processing device according to claim 10, wherein, if said moving object moves along a curve, said viewpoint determining means changes the distance from said moving object to said observation point and said transit point, respectively, in accordance with the properties of the curve.

12. An image processing device according to claim 10 or 11, further comprising display means for displaying said generated viewpoint image.

13. A game device which conducts a game whilst causing said moving object to move in three-dimensional spatial coordinates, characterized in that it comprises an image processing device according to any one of claims 9 to 12.

14. In an image processing device which causes a moving object composed in three-dimensional spatial coordinates to move, and generates viewpoint images whereby said moving object is viewed from prescribed viewpoints, the image processing device comprising:

viewpoint determining means for smoothly changing the line of sight centerd on said viewpoint in accordance with the path of said moving object.

15. An image processing device according to claim 14, wherein said viewpoint determining means determines the direction of the line of sight centerd on said viewpoint, on the basis of coordinates on the path in front of and behind said moving object.

16. An image processing device according to claim 15, wherein said viewpoint determining means calculates two sets of coordinates located equidistantly in front of and behind said moving object, and takes the straight line joining these coordinates as the direction of said line of sight.

17. An image processing device according to claim 15 or 16 wherein, if said moving object moves along a curve, said viewpoint determining means changes the distance from said moving object to the coordinates in front of and behind it, respectively, in accordance with the properties of the curve.

18. An image processing device according to any one of claims 14 to 17, further comprising display means for displaying said generated viewpoint image.

19. A game device which conducts a game whilst causing said moving object to move in three-dimensional spatial coordinates, characterized in that it comprises an image processing device according to any one of claims 14 to 18.

20. In an image processing method which causes a moving object composed in three-dimensional spatial coordinates to move, and generates viewpoint images seen from the viewpoint of said moving object, the image processing method comprising:

a first step whereby the position of said moving object is read;

a second step whereby a first point is set on the path to the front of said moving object at a predetermined distance from the position thereof;

a third step whereby a second point is set on the path to the rear of said moving object at a predetermined distance from the position thereof; and

a fourth step whereby the direction of the line of sight from said viewpoint is determined on the basis of the line joining said first point and said second point.

42. A storage medium wherein procedures for implementing a method according to any of claim 8, claim 20, claim 26, claim 31, claim 36, or claim 41, in a processing device, are recorded.

21. In an image processing device which generates prescribed images by applying texture respectively to linked pluralities of polygons, the image processing device comprising:

coordinate processing means for determining a reference vector for each mutually linked plurality of polygons and for causing said texture to move in the direction of said reference vector, said moved texture being applied to said polygons.

23. An image processing device according to claim 21 or 22, wherein said coordinate processing means determines said reference vectors on the basis of a predetermined curve.

24. An image processing device according to claim 23, wherein the reference vectors for each of said pluralities of polygons are continuous and said texture corresponds to a flow along said curve.

25. An image processing device according to any one of claims 21 to 24, characterized in that it comprises display means for displaying said generated image.

22. In an image processing device which generates prescribed images by applying texture respectively to linked pluralities of polygons, the image processing device comprising:

coordinate processing means for determining reference vectors for each longitudinal or lateral polygon chain in the longitudinally and laterally linked pluralities of polygons, and for causing said texture to move in the direction of this reference vector, without any deformation of said texture.

26. In an image processing method which generates prescribed images by applying texture respectively to linked pluralities of polygons, the image processing method comprising:

a first step whereby a reference vector is determined for each mutually linked plurality of polygons;

a second step whereby said texture is caused to move in the direction of said reference vector; and

a third step whereby said moved texture is applied to said polygons.

27. In an image processing device which causes a moving object to move in three-dimensional spatial coordinates, and generates viewpoint images seen from a viewpoint at a position of this moving object, the image processing device comprising:

movement processing means for causing a background image representing a distant background to move with a movement of said viewpoint.

28. An image processing device according to claim 27, wherein said background image forms a cylindrical shape or a spherical shape.

29. An image processing device according to claim 27 or 28, characterized in that it comprises display means for displaying said generated image.

30. A game device which conducts a game whilst causing said moving object to move in three-dimensional spatial coordinates, wherein it comprises an image processing device according to any one of claims 27 to 29.

31. In an image processing method which causes a moving object to move in three-dimensional spatial coordinates, and generates viewpoint images seen from a viewpoint at a position of this moving object, the image processing method comprising:

a first step whereby the amount of movement of said moving object is found; and

a second step whereby a background image representing a distant background is caused to move on the basis of said amount of movement.

32. In an image processing device which causes a moving object composed in three-dimensional spatial coordinates to move, and generates viewpoint images seen from a viewpoint at a position of this moving object using polygons, the image processing device comprising:

polygon number controlling means for classifying the polygons forming said viewpoint image into a plurality of polygon groups, and for controlling the number of polygons displayed such that, at each group, it is at or below a predetermined maximum number of polygons displayed.

33. An image processing device according to claim 32, wherein said polygon number controlling means classified the polygons forming said viewpoint image into at least polygon group representing the background and other group.

34. An image processing device according to claim 32 or 33, characterized in that it comprises display means for displaying said generated viewpoint image.

35. A game device which conducts a game whilst causing said moving object to move in three-dimensional spatial coordinates, wherein it comprises an image processing device according to any one of claims 32 to 34.

36. In an image processing method which causes a moving object composed in three-dimensional spatial coordinates to move, and generates viewpoint images seen from a viewpoint at a position of this moving object using polygons, the image processing method comprising:

a first step whereby the polygons forming said viewpoint image are classified into a plurality of polygon groups and a maximum number for the number of polygons displayed is determined at each of said groups; and

a second step whereby the number of polygons displayed is controlled at each of said groups within a range not exceeding said maximum display number.

37. In an image processing device which causes a moving object composed in three-dimensional spatial coordinates to move, and generates viewpoint images seen from a viewpoint at a position of this moving object,

the image processing device characterized in that it comprises field of view changing means for changing the field of view of said viewpoint image in accordance with the conditions in a direction of movement.

38. An image processing device according to claim 37, where said field of view changing means broadens the field of view when no object is present in front of said moving object, and narrows the field of view when an object is present.

39. An image processing device according to claim 37 or 38, characterized in that it comprises display means for displaying said generated viewpoint image.

40. A game device which conducts a game whilst causing said moving object to move in three-dimensional spatial coordinates, characterized in that it comprises an image processing device according to any one of claims 37 to 39.

41. In an image processing method which causes a moving object composed in three-dimensional spatial coordinates to move, and generates viewpoint images seen from a viewpoint at a position of this moving object, an image processing method comprises:

a first step whereby conditions relating to objects in front of said moving object are investigated; and

a second step whereby the field of view is broadened when no object is present, and the field of view is narrowed when an object is present.