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1. 发明授权

US06812925B1 Map simplification system 有权
标题翻译：地图简化系统
公开(公告)号：US06812925B1
公开(公告)日：2004-11-02
申请号：US10021645
申请日：2001-10-30
申请人： Shankar Krishnan , Suresh Venkatasubramanian , Nabil Mustafa
发明人： Shankar Krishnan , Suresh Venkatasubramanian , Nabil Mustafa
IPC分类号： G06T1530
CPC分类号： G06T17/20 , G06T11/203 , G06T17/05 , G06T17/205
摘要： A map simplification system performs dynamic view dependent simplification of relatively large geographic maps.
摘要翻译：地图简化系统执行相对较大地理地图的动态视图相关简化。

2. 发明授权

US06304271B1 Apparatus and method for cropping an image in a zooming graphical user interface 有权
标题翻译：用于在缩放图形用户界面中裁剪图像的装置和方法
公开(公告)号：US06304271B1
公开(公告)日：2001-10-16
申请号：US09245205
申请日：1999-02-05
申请人： Jad Nehme
发明人： Jad Nehme
IPC分类号： G06T1530
CPC分类号： G06T1/20
摘要： This invention provides a method and system for image cropping in a zooming environment. In a zooming engine, a clip stack and transform stack are provided for all images in a view. When a crop region is selected for an image, the image maintains its crop region in local coordinates. Prior to rendering, the image's local crop region coordinates are pushed on to the clip stack and the image's transform and view's transform are pushed onto a transform stack. A new screen transform is determined from the image transform and the view transform. The screen transform is applied to the image's clip region to provide clip region screen coordinates. These coordinates are pushed on the clip stack. The same transformation is applied to the image's uncropped bounding box coordinates. When the cropped image sends a draw call, the clip region is set and the image is rendered within the clip region and the transformed bounding box.
摘要翻译：本发明提供了一种用于在缩放环境中进行图像裁剪的方法和系统。在缩放引擎中，为视图中的所有图像提供了剪辑栈和变换堆栈。当为图像选择裁剪区域时，图像将其裁剪区域保持在局部坐标。在渲染之前，将图像的局部裁剪区域坐标推送到剪辑堆栈，并将图像的变换和视图的变换推送到转换堆栈。从图像变换和视图变换确定新的屏幕变换。将屏幕变换应用于图像的剪辑区域，以提供剪辑区域屏幕坐标。这些坐标被推到剪辑堆栈上。相同的变换被应用于图像的未压缩边界框坐标。当裁剪的图像发送绘图调用时，设置剪辑区域，并在剪辑区域和转换的边界框中渲染图像。

3. 发明授权

US06791543B2 Forming method for structuring polygonal mesh data and apparatus, and storage medium 失效
标题翻译：用于构造多边形网格数据和设备以及存储介质的形成方法
公开(公告)号：US06791543B2
公开(公告)日：2004-09-14
申请号：US09818641
申请日：2001-03-28
申请人： Akira Kawanaka
发明人： Akira Kawanaka
IPC分类号： G06T1530
CPC分类号： G06T17/205 , G06T17/20
摘要： A structured polygonal mesh data forming method approximates a 3D surface shape with a polygonal mesh constituted by a plurality of polygons and forms 2D structured data applicable of efficient compression/decompression from predetermined information concerning the polygonal. Polygon vertices as the vertices of the polygonal mesh are assigned to nodes as lattice points (triangular lattice including extension nodes) on a 2D coordinate system. 2D structured data is formed by geometric data consisting of the position coordinate data of the respective assigned polygon vertices, texture data including color information, and a connectivity map as information about connection between the respective polygons. When a polygon vertex is assigned to a plurality of nodes, and connected nodes are to be formed on the 2D coordinate system, one representative node is selected from the nodes. Nodes other than the representative node are represented by positions relative to the representative node.
摘要翻译：结构化多边形网格数据形成方法利用由多个多边形构成的多边形网格逼近3D表面形状，并且形成适用于关于多边形的预定信息的有效压缩/解压缩的2D结构化数据。作为多边形网格的顶点的多边形顶点被分配给节点作为2D坐标系上的格点（三角形格子包括扩展节点）。 2D结构化数据由各自分配的多边形顶点的位置坐标数据，包括颜色信息的纹理数据和连接图组成的几何数据形成，作为关于各个多边形之间的连接的信息。当多边形顶点被分配给多个节点，并且连接的节点将被形成在2D坐标系上时，从节点中选择一个代表性节点。除了代表性节点之外的节点由相对于代表性节点的位置表示。

4. 发明授权

US06744434B2 Cuts removal system for triangulated CAD Models 失效
标题翻译：三角CAD模型的切除系统
公开(公告)号：US06744434B2
公开(公告)日：2004-06-01
申请号：US09997031
申请日：2001-11-30
申请人： Volodymyr V. Kindratenko , Robert J. Fenwick
发明人： Volodymyr V. Kindratenko , Robert J. Fenwick
IPC分类号： G06T1530
CPC分类号： G06T17/20
摘要： A method for reducing the complexity of a triangulated CAD model while preserving the topological properties and shape of the original model is disclosed. In operation, the system and method identifies a plurality of coplanar vertices in a CAD model, removes the coplanar vertices if they form a circle that is smaller than a predetermined size, and then re-triangulates an opening left by the removal of the vertices from the CAD model.
摘要翻译：公开了一种降低三角形CAD模型的复杂性同时保留原始模型的拓扑性质和形状的方法。在操作中，系统和方法识别CAD模型中的多个共面顶点，如果它们形成小于预定大小的圆，则去除共面顶点，然后通过从顶点的移除而将剩下的开口重新三角化 CAD模型。

5. 发明授权

US06456286B1 Apparatus and method for displaying three-dimensional polygons 有权
标题翻译：用于显示三维多边形的装置和方法
公开(公告)号：US06456286B1
公开(公告)日：2002-09-24
申请号：US09443140
申请日：1999-11-19
申请人： Masatoshi Arai , Ryosuke Miyata
发明人： Masatoshi Arai , Ryosuke Miyata
IPC分类号： G06T1530
CPC分类号： G06T15/00
摘要： A polygon rendering capability detecting part detects the rendering capability of the equipment used so as to calculate the total number of polygons Nap that can be allocated in one frame. A visual quality determining part determines an average area Sp represented by one polygon on a display screen as visual quality, and an optimum polygon number calculating part calculates the optimum number of polygons Np that can be allocated based on the size of a three-dimensional character projected on the display screen while maintaining the visual quality Sp constant. A polygon number adjusting part lowers the progressive polygon level of the three-dimensional character so that the number of polygons of the three-dimensional character is not less than the calculated optimum number of polygons and is the smallest number of polygons to which the number of polygons can be reduced. When the three-dimensional character moves and the Z value is changed, Np is updated so that Sp becomes constant.
摘要翻译：多边形呈现能力检测部分检测所使用的设备的渲染能力，以便计算可以在一帧中分配的多边形Nap的总数。视觉质量确定部件将由显示屏幕上的一个多边形表示的平均面积Sp确定为视觉质量，并且最佳多边形数量计算部分基于三维字符的大小来计算可以分配的最佳数量的多边形Np 投影在显示屏上，同时保持视觉质量Sp恒定。多边形数量调整部降低三维字符的渐进多边形等级，使得三维字符的多边形的数量不小于所计算的最佳多边形数，并且是多边形的最小数目可以减少多边形。当三维字符移动并且Z值改变时，Np被更新，使得Sp变得恒定。

6. 发明授权

US06359629B1 Backface primitives culling 失效
标题翻译：剔除背面原语
公开(公告)号：US06359629B1
公开(公告)日：2002-03-19
申请号：US09111284
申请日：1998-07-06
申请人： Michael J. Hopcroft , Antonia Spyridi
发明人： Michael J. Hopcroft , Antonia Spyridi
IPC分类号： G06T1530
CPC分类号： G06T15/40
摘要： A method of efficiently removing backfacing primitives from the graphics pipeline such that rendering efficiency is increased. In one embodiment of the present invention, a bounding cone of normal vectors of a primitive is first determined during pre-processing. During the rendering process, before the primitive is drawn, the bounding cone is compared with a half-space defined by a viewing vector. Primitives whose bounding cones do not intersect with the half-space will be removed from further processing. In this way, rendering efficiency is increased. In another embodiment, a normal bit-vector is used to represent normal directions of a primitive, and a visibility bit-vector is used to represent visible normal directions. In that embodiment, primitives are culled efficiently by comparing the normal bit-vector with the visibility bit-vector.
摘要翻译：一种从图形管线有效地去除背面原始图案以提高渲染效率的方法。在本发明的一个实施例中，首先在预处理期间确定原始法线向量的边界锥。在渲染过程中，在绘制原始图像之前，将边界锥与由观看向量定义的半空间进行比较。其边界锥体与半空间不相交的原子将被进一步处理。以这种方式，提高渲染效率。在另一个实施例中，使用正常位向量来表示原语的法线方向，并且可视比特矢量用于表示可见的法线方向。在该实施例中，通过将正常比特向量与可见性比特向量进行比较来有效地剔除图元。

7. 发明授权

US06271862B1 Apparatus and method for determining line clipping intersection points 有权
标题翻译：用于确定线剪切交点的装置和方法
公开(公告)号：US06271862B1
公开(公告)日：2001-08-07
申请号：US09167840
申请日：1998-10-07
申请人： Cindy Z. Yu
发明人： Cindy Z. Yu
IPC分类号： G06T1530
CPC分类号： G06T15/30
摘要： In a graphics system, an apparatus and method reduce the computational complexity for clipping in a graphics environment by determining the relationship between a line and a graphics element, and performing an optimized number of calculations based on the determined relationship. More specifically, it is first determined whether a clipping operation must be performed at all. This is done by forming a rectangle using the line as a diagonal and comparing that rectangle to the graphics element area to determine overlap. If there is no overlap, no clipping needs to be performed. If there is overlap, the overlapping area is determined and categorized, and a corresponding clipping operation is then performed.
摘要翻译：在图形系统中，设备和方法通过确定线和图形元素之间的关系以及基于所确定的关系来执行优化的计算次数来降低图形环境中的削波的计算复杂度。更确切地说，首先确定是否必须执行限幅操作。这是通过使用该线作为对角线形成矩形并将该矩形与图形元素区域进行比较以确定重叠来完成的。如果没有重叠，则不需要执行剪辑。如果存在重叠，则确定重叠区域并进行分类，然后执行相应的剪切操作。

8. 发明授权

US06600488B1 Tessellation system, method and computer program product with interior and surrounding meshes 有权
标题翻译：镶嵌系统，方法和计算机程序产品与内部和周围的网格
公开(公告)号：US06600488B1
公开(公告)日：2003-07-29
申请号：US10287988
申请日：2002-11-04
申请人： Henry P. Moreton , Douglas H. Rogers
发明人： Henry P. Moreton , Douglas H. Rogers
IPC分类号： G06T1530
CPC分类号： G06T17/20
摘要： A system, method and article of manufacture are provided for decomposing surfaces for rendering purposes during computer graphics processing. Initially, an interior mesh of primitives is defined in a surface to be rendered. Next, a plurality of surrounding meshes is defined along sides of the interior mesh. The exterior sides of the surrounding meshes each include a plurality of equally sized segments and at least one fractional segment that is a fraction of the equally sized segments. With this configuration, a pattern of triangles is used that permits the number of triangles to be varied continuously from frame to frame while accommodating incremental evaluation techniques such as forward differencing without visual artifacts such as popping.
摘要翻译：在计算机图形处理期间提供用于分解表面以用于呈现目的的系统，方法和制造品。最初，原始图案的内部网格被定义在要渲染的表面中。接下来，沿着内部网格的侧面限定多个周围的网格。周围网格的外侧各自包括多个相同大小的段和至少一个小数段，其是相当大小的段的一部分。使用这种配置，使用三角形图案，其允许三角形的数量从帧到帧连续变化，同时容纳诸如前向差分的增量评估技术，而不会出现诸如弹出的视觉伪影。

9. 发明授权

US06512524B1 Method and apparatus for object element attribute determination using barycentric coordinates 有权
标题翻译：使用重心坐标对象元素属性确定的方法和装置
公开(公告)号：US06512524B1
公开(公告)日：2003-01-28
申请号：US09496735
申请日：2000-02-02
申请人： Michael A. Mang
发明人： Michael A. Mang
IPC分类号： G06T1530
CPC分类号： G06T15/30
摘要： A method and apparatus for determining attributes of an object-element using barycentric coordinates includes processing that begins by obtaining a barycentric coordinate for a vertex of an object-element. The object-element is clipped with respect to a clipping plane where a first component of the barycentric coordinate corresponds to a first original vertex of the object-element, a second component of the barycentric coordinate corresponds to a second original vertex of the object-element and a third component of the barycentric coordinate corresponds to a third vertex of the object-element. The processing continues by, for each non-zero component of the barycentric coordinate, determining whether at least one attribute of the corresponding vertex of the non-component is substantially similar. The processing continues by setting the at least one corresponding attribute of the vertex to substantially equal the attribute for the other vertex when the at least one attribute is substantially similar.
摘要翻译：用于使用重心坐标确定对象元素的属性的方法和装置包括通过获得对象元素的顶点的重心坐标而开始的处理。对象元素相对于裁剪平面被裁剪，其中重心坐标的第一分量对应于对象元素的第一原始顶点，重心坐标的第二分量对应于对象元素的第二原始顶点并且重心坐标的第三分量对应于对象元素的第三顶点。对于重心坐标的每个非零分量，处理继续确定非分量的相应顶点的至少一个属性是否基本相似。当至少一个属性基本相似时，通过将顶点的至少一个对应属性设置为基本上等于另一个顶点的属性来继续该处理。

10. 发明授权

US06504537B1 System, method and article of manufacture for fractional tessellation during graphics processing 有权
$System, method and article of manufacture for fractional tessellation during graphics processing$
标题翻译：图形处理中的分数细分的系统，方法和制造
公开(公告)号：US06504537B1
公开(公告)日：2003-01-07
申请号：US09655103
申请日：2000-09-05
申请人： Henry P. Moreton , Douglas H. Rogers
发明人： Henry P. Moreton , Douglas H. Rogers
IPC分类号： G06T1530
CPC分类号： G06T17/20
摘要： A system, method and article of manufacture are provided for decomposing surfaces for rendering purposes during computer graphics processing. Initially, an interior mesh of primitives is defined in a surface to be rendered. Next, a plurality of surrounding meshes is defined along sides of the interior mesh. The exterior sides of the surrounding meshes each include a plurality of equally sized segments and at least one fractional segment that is a fraction of the equally sized segments. With this configuration, a pattern of triangles is used that permits the number of triangles to be varied continuously from frame to frame while accommodating incremental evaluation techniques such as forward differencing without visual artifacts such as popping.
摘要翻译：在计算机图形处理期间提供用于分解表面以用于呈现目的的系统，方法和制造品。最初，原始图案的内部网格被定义在要渲染的表面中。接下来，沿着内部网格的侧面限定多个周围的网格。周围网格的外侧各自包括多个相同大小的段和至少一个小数段，其是相当大小的段的一部分。使用这种配置，使用三角形图案，其允许三角形的数量从帧到帧连续变化，同时容纳诸如前向差分的增量评估技术，而不会出现诸如弹出的视觉伪影。

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