会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Method and apparatus for adaptive Phong shading
    • 适应性Phong阴影的方法和装置
    • US5253339A
    • 1993-10-12
    • US560869
    • 1990-07-26
    • Stuart WellsJames Van LooJack R. McKeownMukund Bhakta
    • Stuart WellsJames Van LooJack R. McKeownMukund Bhakta
    • G06T15/83G06F15/72
    • G06T15/83
    • An adaptive shading method is utilized to generate shaded images in real time. The technique to shade the image is determined according to the curvature of the surface, the variation of the light vector across the surface, and the variation of the eye vector across the surface. The color or intensity is first computed at each of the vertices of the polygon. A series of tests are then performed to determine the order equation that is to be used to interpolate the color or intensity across the polygon between the vertices. Using this technique, polygons having a slight or no curvature and an infinite light source (thus being the simplest form of shading), will use an extremely fast, low order equation to interpolate across the polygon. Polygons, having a high degree of curvature and/or positional light source will utilize, as necessary, a higher order equation which requires additional computation time but produces desirable shading results.
    • 采用自适应遮蔽方法实时生成阴影图像。 根据表面的曲率,穿过表面的光矢量的变化以及穿过表面的眼矢量的变化来确定遮蔽图像的技术。 首先在多边形的每个顶点处计算颜色或强度。 然后进行一系列测试以确定要用于插入顶点之间的多边形上的颜色或强度的顺序方程。 使用这种技术,具有轻微或无曲率的多边形和无限光源(因此是最简单的阴影形式)将使用非常快速的低阶方程在多边形上进行内插。 具有高曲率和/或位置光源的多边形将根据需要利用需要额外的计算时间而产生期望的阴影结果的较高阶方程。