Patent ID: 8730261

Claim:
An image processing system for displaying, in a predetermined display area, an object containing a plurality of points based on object data with use of computer graphics, each of the points being a point in a three-dimensional space, the image processing system device comprising: an external memory storing the object data, the object data including three-dimensional coordinate data and attribute data, both the three-dimensional coordinate data and the attribute data defining the points; and an image processing device including: an internal storage unit; a coordinate data read unit operable to read, from the external memory into the internal storage unit, a piece of the three-dimensional coordinate data of each point, without reading a piece of the attribute data of each point; a determination unit operable, for each point, to judge whether or not three-dimensional coordinates of the point defined in a piece of the three-dimensional coordinate data of the point are included in a predetermined display coordinate range that defines a range of three-dimensional coordinates to be displayed in the predetermined display area; an attribute data read unit operable (i) to read, into the internal storage unit, the piece of the attribute data of each point for which the three-dimensional coordinates are judged by the determination unit as being included in the predetermined display coordinate range, (ii) not to read, into the internal storage unit, the piece of the attribute data of each point for which the three-dimensional coordinates are judged by the determination unit as not being included in the predetermined display coordinate range; and a display control unit operable to have at least part of the object displayed in the predetermined display area, based on the pieces of the three-dimensional coordinate data and the attribute data read into the internal storage unit.