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公开(公告)号：US20070040829A1
公开(公告)日：2007-02-22
申请号：US11483980
申请日：2006-07-11
Applicant: Colin Cameron , Peter Cowling
Inventor： Colin Cameron , Peter Cowling
IPC: G06T15/00
CPC classification number: G03H1/08 , G03H1/0808 , G03H2210/30 , G03H2210/441 , G03H2210/452 , G03H2240/62 , G09G3/001
Abstract: The invention provides an improved means for displaying computer generated hologram (CGH). Images appearing in the image volume are realised as a set of planar facets that approximate to the shape of the original object to be displayed. These facets are populated with points, that act as the visible parts of the displayed image. When an object is displayed, certain facets will not be face on the viewing zone. This will result in an apparent surplus of points on these facets, which is wasteful of computing effort. The current invention thus provides for certain facets to be denuded of points if these facets are not presented face on to the viewing zone of the CGH. The invention is mainly applicable for producing CGHs using the interference based algorithm, but can also be used in other types of 3D display that make up objects from an array of points.
Abstract translation: 本发明提供了一种用于显示计算机产生的全息图（CGH）的改进方法。 出现在图像体积中的图像被实现为与要显示的原始对象的形状近似的一组平面小平面。 这些方面用点填充，作为显示图像的可见部分。 当显示对象时，某些小平面将不会在观看区域上。 这将导致这些方面的显着盈余，这浪费了计算能力。 因此，本发明提供了如果这些面没有呈现在CGH的观察区上时，某些方面被剥蚀点。 本发明主要适用于使用基于干扰的算法生成CGH，但也可以用于构成来自点阵列的对象的其他类型的3D显示。
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公开(公告)号：US20070291027A1
公开(公告)日：2007-12-20
申请号：US11848217
申请日：2007-08-30
Applicant: Colin Cameron , Peter Cowling
Inventor： Colin Cameron , Peter Cowling
IPC: G06T15/00
CPC classification number: G06T15/10 , G03H1/08 , G03H1/0808 , G03H2210/30 , G03H2210/441 , G03H2240/62 , G06T17/10 , G06T17/20
Abstract: A system includes a computer generated hologram (CGH) design plane and a processor capable of representing a three dimensional object. The processor is configured to represent a surface of the three dimensional object by a facet, impose a grid defining a set of nodes upon the facet, and associate object points with each node of the grid. The processor is further configured to orient the facet to include a common global origin in the CGH design plane and displace the object points away from their associated node in a random or pseudo random direction parallel to the CGH design plane.
Abstract translation: 一种系统包括计算机产生的全息图（CGH）设计平面和能够表示三维物体的处理器。 处理器被配置为通过小平面来表示三维对象的表面，在面上施加定义一组节点的网格，并且将对象点与网格的每个节点相关联。 处理器进一步被配置成定向小平面以在CGH设计平面中包括公共全局原点，并且以平行于CGH设计平面的随机或伪随机方向将对象点从其相关联的节点移开。
