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公开(公告)号：US20080043016A1
公开(公告)日：2008-02-21
申请号：US11837402
申请日：2007-08-10
IPC分类号： G06T15/30
CPC分类号： G06T17/20
摘要： A system, method, and computer program for tessellation, comprising tessellating a curve having a plurality of polygons; connecting said plurality of polygons in a preferred direction; decomposing polygons into a plurality of triangles; and whereby a mesh representation is creating from said plurality of triangles, and appropriate means and computer-readable instructions.
摘要翻译： 一种用于细分的系统，方法和计算机程序，包括细分具有多个多边形的曲线; 在优选方向上连接所述多个多边形; 将多边形分解为多个三角形; 并且由此从所述多个三角形创建网格表示，以及适当的装置和计算机可读指令。
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2.发明申请METHOD AND SYSTEM FOR ORGANIZING TOPOLOGY ELEMENTS FOR BETTER COMPRESSION 有权用于组织拓扑学元素以实现更好的压缩的方法和系统公开(公告)号：US20080043030A1
公开(公告)日：2008-02-21
申请号：US11837371
申请日：2007-08-10
IPC分类号： G06T9/00
CPC分类号： G06T9/00 , G06T17/00 , G06T2210/32
摘要： A system, method, and computer program for for organizing elements for compression, comprising nesting a hierarchical topological structure having a plurality of elements; arranging said plurality of elements in a pattern to facilitate data compression; representing said pattern as four arrays; and compressing said plurality of elements from said arrays, and appropriate means and computer-readable instructions.
摘要翻译： 一种用于组织用于压缩的元件的系统，方法和计算机程序，包括嵌套具有多个元素的分层拓扑结构; 以图案布置所述多个元件以便于数据压缩; 将所述图案表示为四个阵列; 以及从所述阵列压缩所述多个元件，以及适当的装置和计算机可读指令。
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公开(公告)号：US20080143714A1
公开(公告)日：2008-06-19
申请号：US11837305
申请日：2007-08-10
IPC分类号： G06T17/10
摘要： A system, method, and computer program for producing a visualization format from CAD data comprising producing a BREP model for visualization, wherein said BREP model has a topology component and a geometry component; removing a plurality of redundant control points from said geometry component; normalizing a plurality of knot vectors and a plurality of weight components from said geometry component; recognizing an analytic geometry from said geometry component; recognizing a plurality of equivalents from said geometry component; and converting said analytic geometry to said light model representation, and appropriate means and computer-readable instructions.
摘要翻译： 一种用于从CAD数据产生可视化格式的系统，方法和计算机程序，包括产生用于可视化的BREP模型，其中所述BREP模型具有拓扑组件和几何分量; 从所述几何组件中去除多个冗余控制点; 从所述几何分量归一化多个结向量和多个权重分量; 从所述几何构件识别分析几何; 从所述几何分量识别多个等价物; 并将所述分析几何转换为所述光模型表示，以及适当的装置和计算机可读指令。
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4.发明授权公开(公告)号：US09070178B2
公开(公告)日：2015-06-30
申请号：US11837371
申请日：2007-08-10
CPC分类号： G06T9/00 , G06T17/00 , G06T2210/32
摘要： A system, method, and computer program for organizing elements for compression, comprising nesting a hierarchical topological structure having a plurality of elements; arranging said plurality of elements in a pattern to facilitate data compression; representing said pattern as four arrays; and compressing said plurality of elements from said arrays, and appropriate means and computer-readable instructions.
摘要翻译： 一种用于组织用于压缩的元件的系统，方法和计算机程序，包括嵌套具有多个元素的分层拓扑结构; 以图案布置所述多个元件以便于数据压缩; 将所述图案表示为四个阵列; 以及从所述阵列压缩所述多个元件，以及适当的装置和计算机可读指令。
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公开(公告)号：US08988420B2
公开(公告)日：2015-03-24
申请号：US11837305
申请日：2007-08-10
摘要： A system, method, and computer program for producing a visualization format from CAD data comprising producing a BREP model for visualization, wherein said BREP model has a topology component and a geometry component; removing a plurality of redundant control points from said geometry component; normalizing a plurality of knot vectors and a plurality of weight components from said geometry component; recognizing an analytic geometry from said geometry component; recognizing a plurality of equivalents from said geometry component; and converting said analytic geometry to said light model representation, and appropriate means and computer-readable instructions.
摘要翻译： 一种用于从CAD数据产生可视化格式的系统，方法和计算机程序，包括产生用于可视化的BREP模型，其中所述BREP模型具有拓扑组件和几何分量; 从所述几何组件中去除多个冗余控制点; 从所述几何分量归一化多个结向量和多个权重分量; 从所述几何构件识别分析几何; 从所述几何分量识别多个等价物; 并将所述分析几何转换为所述光模型表示，以及适当的装置和计算机可读指令。
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公开(公告)号：US08884956B2
公开(公告)日：2014-11-11
申请号：US11837402
申请日：2007-08-10
IPC分类号： G06T17/20
CPC分类号： G06T17/20
摘要： A system, method, and computer program for tessellation. A method includes tessellating a curve having a plurality of polygons, connecting said plurality of polygons in a preferred direction, and decomposing polygons into a plurality of triangles. A mesh representation is created from the plurality of triangles.
摘要翻译： 用于细分的系统，方法和计算机程序。 一种方法包括对具有多个多边形的曲线进行细分，所述多边形在优选方向上连接所述多个多边形，并将多边形分解为多个三角形。 从多个三角形创建网格表示。
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7.发明授权公开(公告)号：US08019788B1
公开(公告)日：2011-09-13
申请号：US10261162
申请日：2002-09-30
申请人： Michael B. Carter , Brett Harper , Jeff Trom
发明人： Michael B. Carter , Brett Harper , Jeff Trom
IPC分类号： G06F17/30
CPC分类号： G06F17/30153 , H03M7/30
摘要： The size of lightweight JT data files containing CAD data is reduced by employing lossy compression where acceptable for portions of the CAD data, such as 3D geometry data. Dictionary-based lossless compression for the remaining portions is augmented by exploiting common repeated structures for some portions, such as precise Brep data, and compressing separate but similar data, such as all metadata for a given part and all scene graph data, together as a single block. The compressed data is then written in separate, uniquely identified data segments indexed in a table of contents, allowing quick access to any data segment for streaming.
摘要翻译： 包含CAD数据的轻量级JT数据文件的大小通过使用有损压缩来减少，如CAD数据的部分（如3D几何数据）可接受。 通过利用一些部分的常见重复结构（例如精确的Brep数据）和压缩单独但类似的数据（例如给定部分的所有元数据和所有场景图数据），一起作为一个部分来增加其余部分的基于词典的无损压缩 单块。 然后将压缩数据写入分离的唯一标识的数据段，以内容表格索引，允许快速访问任何数据段进行流式传输。
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