Information processing apparatus and method, program, and navigation apparatus

• US 20060087507A1
• Filed: 10/05/2005
• Published: 04/27/2006
• Est. Priority Date: 10/25/2004
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Koda, Natsuo, Urano, Izumi
• Granted Patent: US 7,420,558 B2
• Time in Patent Office: Days
• US Class Current: 345/421
• CPC Class Codes: G06T 15/20 Perspective computation
• CPC Class Codes: G06T 19/00 Manipulating 3D models or images for computer graphics

Abstract

An information processing apparatus for generating a three-dimensional image obtained by projecting a three-dimensional space onto a plane includes depth determination means for determining a depth of a vertex of a polygon from a viewpoint in the three-dimensional space, the polygon forming a surface of a solid object from which the three-dimensional image is generated, and vertex moving means for moving the position of the vertex by the amount of movement determined in accordance with the depth determined by the depth determination means.

Claims

1. An information processing apparatus for generating a three-dimensional image obtained by projecting a three-dimensional space onto a plane, the information processing apparatus comprising:

depth determination means for determining a depth of a vertex of a polygon from a viewpoint in the three-dimensional space, the polygon forming a surface of a solid object from which the three-dimensional image is generated; and

vertex moving means for moving the position of the vertex by the amount of movement determined in accordance with the depth determined by the depth determination means.

2. The information processing apparatus according to claim 1, further comprising polygon rendering means for rendering a three-dimensional image obtained by projecting a polygon formed by the vertex moved by the vertex moving means onto the plane.

3. The information processing apparatus according to claim 1, further comprising sight-line-vector positional relationship detection means for detecting a relative position of the vertex with respect to a sight-line vector representing a direction of a field of view in the three-dimensional space, wherein

the depth determination means determines the depth of the vertex in accordance with the relative position of the vertex with respect to the sight-line vector detected by the sight-line-vector positional relationship detection means.

4. The information processing apparatus according to claim 3, wherein the sight-line-vector positional relationship detection means detects, as the relative position, a distance from the vertex to the sight-line-vector and a distance from the vertex to a horizontal vector that is perpendicular to the sight-line-vector.

5. The information processing apparatus according to claim 1, wherein the depth determination means determines the depth of the vertex using a predetermined threshold value set in advance.

6. The information processing apparatus according to claim 5, wherein:

when the depth determination means determines that the vertex is located at a position farther than a point serving as the threshold value, the vertex moving means does not move the vertex; and

when the depth determination means determines that the vertex is located at a position closer than the point serving as the threshold value, the vertex moving means moves the vertex by a distance based on the depth.

7. The information processing apparatus according to claim 1, further comprising:

polygon detection means for detecting the polygon forming the surface of the solid object from which the three-dimensional image is generated; and

vertex detection means for detecting the vertex of the polygon detected by the polygon detection means, wherein

the depth determination means determines the depth of the vertex detected by the vertex detection means.

8. The information processing apparatus according to claim 1, wherein:

the vertex moving means determines the amounts of movement of the vertex in a vertical direction and in a horizontal direction independently of each other; and

the vertex moving means moves the vertex in the vertical direction and in the horizontal direction by the determined amounts of movement, respectively.

9. An information processing method for an information processing apparatus for generating a three-dimensional image obtained by projecting a three-dimensional space onto a plane, the information processing method comprising the steps of:

determining a depth of a vertex of a polygon from a viewpoint in the three-dimensional space, the polygon forming a surface of a solid object from which the three-dimensional image is generated; and

moving the position of the vertex by the amount of movement determined in accordance with the depth determined by the depth determining step.

10. A program for causing a computer to perform processing for generating a three-dimensional image obtained by projecting a three-dimensional space onto a plane, the program comprising the steps of:

determining a depth of a vertex of a polygon from a viewpoint in the three-dimensional space, the polygon forming a surface of a solid object from which the three-dimensional image is generated; and

moving the position of the vertex by the amount of movement determined in accordance with the depth determined by the depth determining step.

11. A navigation apparatus for generating a three-dimensional image obtained by projecting a three-dimensional space onto a plane and for performing route guidance, the navigation apparatus comprising:

depth determination means for determining a depth of a vertex of a polygon from a viewpoint in the three-dimensional space, the polygon forming a surface of a solid object from which the three-dimensional image is generated; and

vertex moving means for moving the position of the vertex by the amount of movement determined in accordance with the depth determined by the depth determination means.

12. An information processing apparatus for generating a three-dimensional image obtained by projecting a three-dimensional space onto a plane, the information processing apparatus comprising:

a depth determination unit determining a depth of a vertex of a polygon from a viewpoint in the three-dimensional space, the polygon forming a surface of a solid object from which the three-dimensional image is generated; and

a vertex moving unit moving the position of the vertex by the amount of movement determined in accordance with the depth determined by the depth determination unit.

13. A navigation apparatus for generating a three-dimensional image obtained by projecting a three-dimensional space onto a plane and for performing route guidance, the navigation apparatus comprising:

a depth determination unit determining a depth of a vertex of a polygon from a viewpoint in the three-dimensional space, the polygon forming a surface of a solid object from which the three-dimensional image is generated; and

a vertex moving unit moving the position of the vertex by the amount of movement determined in accordance with the depth determined by the depth determination unit.