公开(公告)号：US06366283B1

公开(公告)日：2002-04-02

申请号：US09261145

申请日：1999-03-03

申请人： Filippo Tampieri

发明人： Filippo Tampieri

IPC分类号： G06T1550

CPC分类号： G06T15/55

摘要： Image data is generated for a scene, in which the scene includes object surfaces in three-dimensions. Intersecting or touching surfaces are identified by analyzing the surfaces within a hierarchy of bounding volumes. Thereafter, a multi-resolution representation of a radiosity equation is constructed for the scene, wherein one of the identified surfaces is considered separately for light emission on either side of a previously identified line of contact or intersection.

摘要翻译： 为场景生成图像数据，其中场景包含三维对象表面。 通过分析界限卷层次结构中的曲面来识别相交或触摸曲面。 此后，对于场景构造辐射度方程的多分辨率表示，其中所识别的表面中的一个被单独考虑用于先前识别的接触线或交叉点的任一侧上的发光。

公开(公告)号：US06525730B2

公开(公告)日：2003-02-25

申请号：US10059897

申请日：2002-01-29

申请人： Filippo Tampieri

发明人： Filippo Tampieri

IPC分类号： G06T1550

CPC分类号： G06T15/55

摘要： Image data is generated for a scene, in which the scene includes object surfaces in three-dimensions. Intersecting or touching surfaces are identified by analysing the surfaces within a hierarchy of bounding volumes. Thereafter, a multi-resolution representation of a radiosity equation is constructed for the scene, wherein one of the identified surfaces is considered separately for light emission on either side of a previously identified line of contact or intersection.

公开(公告)号：US06496597B1

公开(公告)日：2002-12-17

申请号：US09261142

申请日：1999-03-03

申请人： Filippo Tampieri

发明人： Filippo Tampieri

IPC分类号： G06K900

CPC分类号： G06T15/55 ,  G06T15/40

摘要： Image data is generated by a process of radiosity, wherein a plurality of elements are defined in three dimensional space. Selected elements are set as being non-occluding and light emission values for said elements are determined by calculating the effect of light reflections between the elements. An accumulated total level of light is adjusted in response to the visibility of elements including at least one of said non-occluding elements.

摘要翻译： 图像数据通过辐射过程产生，其中在三维空间中定义多个元素。 所选择的元素被设置为不阻塞，并且通过计算元件之间的光反射的影响来确定所述元件的发光值。 响应于包括至少一个所述非阻塞元件的元件的可视性来调节累积的总光量。

公开(公告)号：US06411297B1

公开(公告)日：2002-06-25

申请号：US09261143

申请日：1999-03-03

申请人： Filippo Tampieri

发明人： Filippo Tampieri

IPC分类号： G06T1500

CPC分类号： G06T15/55

摘要： A multi-resolution representation of a radiosity equation for a scene is constructed. The scene comprises object elements and steps are performed to identify specialised cluster elements by associating object elements having a characterising relationship. Elements are linked and/or meshed in response to an estimate of error of light transmission between the elements. The linking includes the process of calculating a form factor and when linking a specialised cluster, the form factor is calculated with reference to the characterising relationship. The characterising relationship may be, for example, near co-planarity and in this way the overall processing and calculation requirements are reduced.

摘要翻译： 构建场景的辐射度方程的多分辨率表示。 场景包括对象元素，并且执行步骤以通过将具有表征关系的对象元素相关联来识别专门的集群元素。 响应于元件之间的光传输误差的估计，元件被链接和/或网格化。 链接包括计算形状因子的过程，当链接专门的集群时，形状因子参照特征关系进行计算。 特征关系可以是例如近似的共面性，并且以这种方式减少了整体处理和计算要求。

公开(公告)号：US06487322B1

公开(公告)日：2002-11-26

申请号：US09261146

申请日：1999-03-03

申请人： Rui Bastos ,  Filippo Tampieri

发明人： Rui Bastos ,  Filippo Tampieri

IPC分类号： H04N140

CPC分类号： G06T15/50

摘要： A surface generated from a radiosity simulation is shaded. The surface is divided into a plurality of elements and a brightness value is calculated for each of the elements. An initial surface shading is defined in which the resolution of shading is determined in response to the highest element density of the surface. Element brightness values are processed to generate brightness values for the initial surface shading and values of the initial surface shading are filtered to generate brightness values for an enhanced surface shading. Brightness values of a plurality of elements may be combined to generate a single texel brightness value in the initial surface shading. The filtering step may include steps of increasing the resolution of the initial surface shading and filtering the increased resolution shading. A galcion filtering process may be performed.

摘要翻译： 从辐射模拟产生的表面是阴影的。 表面被分成多个元素，并且为每个元素计算亮度值。 定义初始表面阴影，其中根据表面的最高元素密度确定阴影的分辨率。 处理元素亮度值以产生初始表面阴影的亮度值，并且过滤初始表面阴影的值以生成增强的表面阴影的亮度值。 可以组合多个元素的亮度值以在初始表面阴影中产生单个纹素亮度值。 滤波步骤可以包括增加初始表面阴影的分辨率并过滤增加的分辨率阴影的步骤。 可以执行电泳过滤处理。

公开(公告)号：US06313842B1

公开(公告)日：2001-11-06

申请号：US09261121

申请日：1999-03-03

申请人： Filippo Tampieri

发明人： Filippo Tampieri

IPC分类号： G06T1560

CPC分类号： G06T15/55

摘要： Image data is generated from scene data, possibly within a virtual set. The scene data defines surfaces and a plurality of lighting banks. A multi-resolution representation of a radiosity equation is constructed with respect to the scene data. The radiosity equation is solved individually for each of the light banks. A light bank for which a solution is being sought is switched on with the remaining light banks being switched off.

摘要翻译： 图像数据从场景数据生成，可能在虚拟集合内。 场景数据定义表面和多个照明组。 相对于场景数据构建辐射度方程的多分辨率表示。 对于每个光库单独求解辐射度方程。 正在寻找寻求解决方案的灯组，其余的灯组被关闭。

公开(公告)号：US06262742B1

公开(公告)日：2001-07-17

申请号：US09261144

申请日：1999-03-03

申请人： Filippo Tampieri

发明人： Filippo Tampieri

IPC分类号： G06T1500

CPC分类号： G06T15/00

摘要： Image data is generated from scene data, in which the scene data include object elements in world space. Each object element has a surface that may be subdivided into a mesh and a plurality of these objects have a surface that is created in response to data from a master shape in canonical space. The surface is created by an affine transformation of the master shape and the master shape has a known area. A corresponding area of the transformed surface is calculated with reference to the adjoint matrix and the affine transformation. With this information, the surface areas in world space are used to determine light emission characteristics for the scene. The technique is particularly attractive when rendering images in real-time for application within a virtual set.

摘要翻译： 图像数据从场景数据生成，其中场景数据包括世界空间中的对象元素。 每个对象元素具有可以被细分为网格的表面，并且这些对象中的多个具有响应于来自规范空间中的主形状的数据创建的表面。 该表面通过主形状的仿射变换创建，并且主形状具有已知区域。 参照伴奏矩阵和仿射变换计算变换曲面的对应区域。 利用这些信息，世界空间中的表面积用于确定场景的光发射特性。 当在虚拟集合中实时应用图像时，该技术特别有吸引力。