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Rendering method of rendering image on two-dimensional screen

  • US 7,079,136 B2
  • Filed: 11/29/2001
  • Issued: 07/18/2006
  • Est. Priority Date: 12/19/2000
  • Status: Expired due to Term
First Claim
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1. A rendering method comprising the steps of:

  • subdividing a frame where a two-dimensional image is formed into predetermined unit areas;

    determining an optional area in the frame corresponding to a first object of the two-dimensional image;

    determining overwrite rendering is inhibited for at least one of the predetermined unit areas in the optional area, wherein said overwrite rendering provides means for rendering a portion of a second object in an area overlapping the optional area that corresponds to a portion of a second object in the two-dimensional image; and

    wherein the second object is positioned nearer a virtual viewpoint than the first object and rendering is inhibited in each unit area in the overlapping area for which overwrite rendering is determined to be inhibited;

    making a determination that the overwrite rendering is inhibited with respect to each unit ares corresponding to a predetermined pattern of the unit area included in the optional area;

    making a determination that the overwrite rendering is inhibited by setting a Z coordinate value indicative of a distance from a virtual viewpoint to be identical to a Z coordinate value of the virtual viewpoint, with respect to the unit area corresponding to the predetermined pattern; and

    rendering a predetermined object in the frame;

    wherein the optional area is determined based on a rendering range where the predetermined object is rendered.

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