Patent ID: 7372461

Claim:
An image processing apparatus for expressing a primitive as a combination of a plurality of unit graphics formed by connecting a plurality of vertexes, generating pixels in a graphics drawing target region of a screen coordinate system, and drawing the unit graphics in a memory, comprising: a unit graphic generator for selecting a plurality of vertexes other than predetermined end points from among a plurality of vertex data able to form a predetermined shape, judging whether each selected vertex is valid or invalid based on a distance between the selected vertex and an adjacent vertex, and generating unit graphic data based on validity/invalidity information of each vertex; and a drawing device for receiving the unit graphic data generated at the unit graphic generator and drawing at least one unit graphic, wherein the unit graphic generator judges a vertex as valid when a sum of distances between each selected vertex and a plurality of adjacent vertexes is at least a constant value set in advance and judges it as invalid when the sum is less than the constant value.