Perspective projection calculation devices and methods
    51.
    发明授权
    Perspective projection calculation devices and methods 失效
    透视投影计算装置及方法

    公开(公告)号:US06236404B1

    公开(公告)日:2001-05-22

    申请号:US09536757

    申请日:2000-03-28

    IPC分类号: G06F1500

    CPC分类号: G06T15/20

    摘要: An image processing system for perspectively projecting a triangle defined in a three-dimensional space onto a two-dimensional space and shading the triangle in the two-dimensional space, includes a memory which stores at least inverses of depth coordinates; a CPU which calculates a plane slope element coefficient which implies a plane slope element of the triangle defined in the three-dimensional space, and calculates an interpolation coefficient from the plane slope element coefficient; and a graphics processor which makes a perspective correction using the interpolation coefficient and inverses of depth coordinates stored in the memory. The graphics processor may output inverses of depth coordinates for storage in the memory in advance, and may output a result of the perspective correction for storage in the memory. The image processing system may also include a display for displaying a result of the perspective correction.

    摘要翻译: 用于将在三维空间中定义的三角形透视地投影到二维空间上并遮蔽二维空间中的三角形的图像处理系统包括至少存储深度坐标的逆的存储器; 计算意味着在三维空间中定义的三角形的平面斜率元素的平面斜率元素系数的CPU,并根据平面斜率元素系数计算插值系数; 以及图形处理器,其使用插值系数进行透视校正,并且存储在存储器中的深度坐标的反转。 图形处理器可以预先输出用于存储在存储器中的深度坐标的反相,并且可以输出用于存储在存储器中的透视校正的结果。 图像处理系统还可以包括用于显示透视校正的结果的显示器。

    Perspective projection calculation devices and methods
    53.
    发明授权
    Perspective projection calculation devices and methods 失效
    透视投影计算装置及方法

    公开(公告)号:US6043820A

    公开(公告)日:2000-03-28

    申请号:US745858

    申请日:1996-11-08

    IPC分类号: G06T15/20 G06T15/80 G06F15/00

    CPC分类号: G06T15/20

    摘要: A perspective projection calculation device making a perspective correction accurately and rapidly in each plane while avoiding an increase in the number of dividing operations. The perspective projection calculation device comprises at least one plane slope element coefficient calculation unit for calculating a coefficient which implies a plane slope element of the triangle defined in the three-dimensional space usable in common in a plurality of geometrical parameters to be interpolated, at least on interpolation coefficient calculation unit for calculating an interpolation coefficient from the plane slope element coefficient calculated by the plane slope element coefficient calculation unit, and at least one correction unit for making a perspective correction, using the interpolation coefficient obtained in the interpolation coefficient calculation unit.

    摘要翻译: 透视投影计算装置,在避免分割次数增加的同时,在各平面中精确而快速地进行透视校正。 透视投影计算装置包括至少一个平面斜率元素系数计算单元,用于计算一个系数,该系数意味着三维空间中限定的三角形空间的平面斜率元素,该三角形空间可在多个待插值的几何参数中共同使用,至少 用于根据由平面斜率元素系数计算单元计算的平面斜率元素系数计算插值系数的插值系数计算单元,以及使用在内插系数计算单元中获得的内插系数的至少一个用于进行透视校正的校正单元。