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公开(公告)号：US09406165B2
公开(公告)日：2016-08-02
申请号：US13985077
申请日：2012-02-03
CPC分类号： G06T15/405 , G06T1/60 , G09G5/393
摘要： A method for estimating occlusion in a virtual environment comprising at least two objects and observed from a viewpoint. Thereafter, a second item of information representative of the distance separating a second fragment of a second object from the viewpoint according to an observation direction is computed; the second item of information is compared with a first item of information representative of the distance separating a first fragment of a first object from the viewpoint according to the observation direction and is stored in a first buffer memory. If the second item of information is less than the first item of information, then a third item of information representative of attributes associated with the second fragment is estimated, the second item of information is stored in a second buffer memory and the third item of information is stored in a third buffer memory. If the second item of information is greater than the first item of information, of then the first item of information is stored in the second buffer memory.
摘要翻译： 一种用于估计虚拟环境中的遮挡的方法，包括至少两个对象并且从视点观察。 此后，计算表示根据观察方向将第二物体的第二片段与视点分开的距离的第二项信息; 将第二项信息与表示根据观察方向将第一物体的第一片段与视点分离的距离的信息的第一项进行比较，并存储在第一缓冲存储器中。 如果第二项信息小于第一项信息，则估计表示与第二片段相关联的属性的第三项信息，将第二项信息存储在第二缓冲存储器中，并将第三项信息 存储在第三缓冲存储器中。 如果第二项信息大于第一项信息，则第一项信息被存储在第二缓冲存储器中。
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公开(公告)号：US20130321416A1
公开(公告)日：2013-12-05
申请号：US13985077
申请日：2012-02-03
IPC分类号： G06T17/10
CPC分类号： G06T15/405 , G06T1/60 , G09G5/393
摘要： A method for estimating occlusion in a virtual environment comprising at least two objects and observed from a viewpoint. Thereafter, a second item of information representative of the distance separating a second fragment of a second object from the viewpoint according to an observation direction is computed:, the second item of information is compared with a first item of information representative of the distance separating a first fragment of a first object from the viewpoint according to the observation direction and is stored in a first buffer memory. If the second item of information is less than the first item of information, then a third item of information representative of attributes associated with the second fragment is estimated, the second item of information is stored in a second buffer memory and the third item of information is stored in a third buffer memory. If the second item of information is greater than the first item of information, then the first item of information is stored in the second buffer memory.
摘要翻译： 一种用于估计虚拟环境中的遮挡的方法，包括至少两个对象并且从视点观察。 此后，计算表示根据观察方向将第二物体的第二片段与视点分开的距离的第二项信息：将第二项信息与表示距离分离的第一信息项进行比较 根据观察方向从视点的第一对象的第一片段，并存储在第一缓冲存储器中。 如果第二项信息小于第一项信息，则估计表示与第二片段相关联的属性的第三项信息，将第二项信息存储在第二缓冲存储器中，并将第三项信息 存储在第三缓冲存储器中。 如果第二项信息大于第一项信息，则第一项信息被存储在第二缓冲存储器中。
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公开(公告)号：US20120105450A1
公开(公告)日：2012-05-03
申请号：US13317486
申请日：2011-10-19
IPC分类号： G06T15/40
摘要： The invention relates to a method for estimation of the occlusion at a point P of a virtual environment, the point P belonging to a surface (S) grouping at least some of the points of the virtual environment visible from a viewpoint. In order to improve the display while minimising the required calculation time, the method comprises steps for: estimating intersections between said surface (S) and a plurality of half-lines having as origin said point P, said intersections being estimated by discretization of each half-line of said plurality of half-lines, associating of occlusion factors with the half-lines of said plurality of half-lines having an intersection with said surface (S), said occlusion factors being a function of occlusion distances Δ0 separating said point P from said intersections, and estimation of the occlusion in said point P from said estimated intersections.
摘要翻译： 本发明涉及一种用于估计虚拟环境的点P处的遮挡的方法，属于从视点可见的虚拟环境的至少一些点的表面（S）的点P。 为了在最小化所需的计算时间的同时改善显示，该方法包括以下步骤：估计所述表面（S）和具有原点所述点P的多条半线之间的交点，所述交点通过每个半 所述多个半线的线与所述多个半线的半线与所述表面（S）具有交点相关联，所述遮挡因子是分隔所述表面（S）的遮挡距离＆Dgr; 0的函数; 来自所述交叉点的点P以及所述估计交叉点中所述点P中的闭塞的估计。
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