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    • 13. 发明授权
    • Method and apparatus for mapping texture on an object displayed at a
varying view angle from an observer
    • 用于在与观察者不同的视角显示的对象上映射纹理的方法和装置
    • US5786822A
    • 1998-07-28
    • US874954
    • 1997-06-13
    • Toru SakaibaraToshiharu KawasakiToshiyuki Kuwana
    • Toru SakaibaraToshiharu KawasakiToshiyuki Kuwana
    • G06T15/04G06T11/40
    • G06T15/04
    • A plurality of texture data of a surface of an object to be displayed as viewed from a plurality of assumed directions are stored in a texture memory. When a CPU sends to a graphic processor information specifying a shape of the surface, a direction to view the surface and a texture in the texture memory as a command, a geometric operation unit produces read information of the texture memory based on the input information. A triangle generator reads the texture data corresponding to the view direction of the surface of the object by the read information for texture mapping. An image of the texture mapped image of the surface of the object is stored in a frame memory and displayed on a monitor. When there is no texture data corresponding to the view direction, a plurality of texture data closest thereto are read from the texture memory and interpolated to produce an appropriate texture data.
    • 从多个假定方向观看要显示的对象的表面的多个纹理数据被存储在纹理存储器中。 当CPU向图形处理器发送指定表面形状的信息时,将纹理存储器中的表面和纹理的方向作为命令,几何运算单元根据输入信息产生纹理存储器的读取信息。 三角形生成器通过用于纹理映射的读取信息来读取对应于物体表面的视图方向的纹理数据。 将物体表面的纹理映射图像的图像存储在帧存储器中并显示在监视器上。 当没有对应于视图方向的纹理数据时,从纹理存储器读取与其最接近的多个纹理数据,并进行内插以产生适当的纹理数据。