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1. 发明授权

US06982714B2 Systems and methods for providing a fine to coarse look ahead in connection with parametrization metrics in a graphics system 失效
公开(公告)号：US06982714B2
公开(公告)日：2006-01-03
申请号：US10137931
申请日：2002-05-01
申请人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
发明人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
IPC分类号： G06T15/30
CPC分类号： G06T17/20 , G06T17/205
摘要： Systems and methods are provided for providing a fine-to-coarse look ahead in connection with parametrization in a graphics system. The use of a variety of parametrization metrics may be supplemented and improved by the fine-to-coarse look ahead techniques of the invention. First, the metric of a parametrization is minimized using a coarse-to-fine hierarchical solver, and then accelerated with a fine-to-coarse propagation. The resulting parametrizations have increased texture resolution in surface regions with greater signal detail at all levels of detail in the progressive mesh sequence.

2. 发明授权

US07262769B2 Systems and methods for optimizing geometric stretch of a parametrization scheme 有权
公开(公告)号：US07262769B2
公开(公告)日：2007-08-28
申请号：US10978098
申请日：2004-10-29
申请人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
发明人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
IPC分类号： G06T17/00
CPC分类号： G06T17/20
摘要： Systems and methods are provided for optimizing the geometric stretch of a parametrization scheme. Given an arbitrary mesh, the systems and methods construct a progressive mesh (PM) such that all meshes in the PM sequence share a common texture parametrization. The systems and methods minimize geometric stretch, i.e., small texture distances mapped onto large surface distances, to balance sampling rates over all locations and directions on the surface. The systems and methods also minimize texture deviation, i.e., “slippage” error based on parametric correspondence, to obtain accurate textured mesh approximations. The technique(s) begin by partitioning the mesh into charts using planarity and compactness heuristics. Then, the technique(s) proceed by creating a stretch-minimizing parametrization within each chart, and by resizing the charts based on the resulting stretch. Then, the technique(s) simplify the mesh while respecting the chart boundaries. Next, the parametrization is re-optimized to reduce both stretch and deviation over the whole PM sequence. The charts may then be packed into a texture atlas for improved texture mapping in connection with a parametrization scheme.

3. 发明授权

US07071936B2 Systems and methods for providing signal-specialized parametrization 失效
公开(公告)号：US07071936B2
公开(公告)日：2006-07-04
申请号：US10138289
申请日：2002-05-01
申请人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
发明人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
IPC分类号： G06T17/20
CPC分类号： G06T17/205 , G06T17/20
摘要： Systems and methods are provided for optimizing a parametrization scheme in accordance with information about the surface signal. A surface parametrization is created to store a given surface signal into a texture image. The signal-specialized metric of the invention minimizes signal approximation error, i.e., the difference between the original surface signal and its reconstruction from the sampled texture. A signal-stretch parametrization metric is derived based on a Taylor expansion of signal error. For fast evaluation, the metric of the invention is pre-integrated over the surface as a metric tensor. The resulting parametrizations have increased texture resolution in surface regions with greater signal detail. Compared to traditional geometric parametrizations, the number of texture samples can often be reduced by a significant factor for a desired signal accuracy.

4. 发明授权

US06850233B2 Systems and methods for optimizing geometric stretch of a parametrization scheme 有权
公开(公告)号：US06850233B2
公开(公告)日：2005-02-01
申请号：US10138751
申请日：2002-05-01
申请人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
发明人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
IPC分类号： G06T17/20 , G06T17/00
CPC分类号： G06T17/20
摘要： Systems and methods are provided for optimizing the geometric stretch of a parametrization scheme. Given an arbitrary mesh, the systems and methods construct a progressive mesh (PM) such that all meshes in the PM sequence share a common texture parametrization. The systems and methods minimize geometric stretch, i.e., small texture distances mapped onto large surface distances, to balance sampling rates over all locations and directions on the surface. The systems and methods also minimize texture deviation, i.e., “slippage” error based on parametric correspondence, to obtain accurate textured mesh approximations. The technique(s) begin by partitioning the mesh into charts using planarity and compactness heuristics. Then, the technique(s) proceed by creating a stretch-minimizing parametrization within each chart, and by resizing the charts based on the resulting stretch. Then, the technique(s) simplify the mesh while respecting the chart boundaries. Next, the parametrization is re-optimized to reduce both stretch and deviation over the whole PM sequence. The charts may then be packed into a texture atlas for improved texture mapping in connection with a parametrization scheme.

5. 发明授权

US07425954B2 Systems and methods for providing signal-specialized parametrization 有权
标题翻译：提供信号专门参数化的系统和方法
公开(公告)号：US07425954B2
公开(公告)日：2008-09-16
申请号：US11145196
申请日：2005-06-03
申请人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
发明人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
IPC分类号： G06T17/20
CPC分类号： G06T17/205 , G06T17/20
摘要： Systems and methods are provided for optimizing a parametrization scheme in accordance with information about the surface signal. A surface parametrization is created to store a given surface signal into a texture image. The signal-specialized metric of the invention minimizes signal approximation error, i.e., the difference between the original surface signal and its reconstruction from the sampled texture. A signal-stretch parametrization metric is derived based on a Taylor expansion of signal error. For fast evaluation, the metric of the invention is pre-integrated over the surface as a metric tensor. The resulting parametrizations have increased texture resolution in surface regions with greater signal detail. Compared to traditional geometric parametrizations, the number of texture samples can often be reduced by a significant factor for a desired signal accuracy.
摘要翻译：提供的系统和方法用于根据关于表面信号的信息优化参数化方案。创建表面参数以将给定的表面信号存储到纹理图像中。本发明的信号专用度量使信号近似误差最小化，即原始表面信号与其从采样纹理的重构之间的差异。基于信号误差的泰勒扩展导出信号拉伸参数度量。为了快速评估，本发明的度量作为度量张量在表面上预先集成。所产生的参数化在具有更大信号细节的表面区域中增加了纹理分辨率。与传统的几何参数化相比，纹理样本的数量通常可以通过一个重要的因素来减少所需的信号精度。

6. 发明授权

US07230623B2 Systems and methods for optimizing geometric stretch of a parametrization scheme 有权
公开(公告)号：US07230623B2
公开(公告)日：2007-06-12
申请号：US10981228
申请日：2004-11-04
申请人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortier
发明人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortier
IPC分类号： G06T17/00
CPC分类号： G06T17/20
摘要： Systems and methods are provided for optimizing the geometric stretch of a parametrization scheme. Given an arbitrary mesh, the systems and methods construct a progressive mesh (PM) such that all meshes in the PM sequence share a common texture parametrization. The systems and methods minimize geometric stretch, i.e., small texture distances mapped onto large surface distances, to balance sampling rates over all locations and directions on the surface. The systems and methods also minimize texture deviation, i.e., “slippage” error based on parametric correspondence, to obtain accurate textured mesh approximations. The technique(s) begin by partitioning the mesh into charts using planarity and compactness heuristics. Then, the technique(s) proceed by creating a stretch-minimizing parametrization within each chart, and by resizing the charts based on the resulting stretch. Then, the technique(s) simplify the mesh while respecting the chart boundaries. Next, the parametrization is re-optimized to reduce both stretch and deviation over the whole PM sequence. The charts may then be packed into a texture atlas for improved texture mapping in connection with a parametrization scheme.

7. 发明授权

US07573474B2 Systems and methods for optimizing geometric stretch of a parametrization scheme 有权
标题翻译：用于优化参数化方案的几何拉伸的系统和方法
公开(公告)号：US07573474B2
公开(公告)日：2009-08-11
申请号：US10981080
申请日：2004-11-04
申请人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
发明人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
IPC分类号： G06T15/30 , G06T15/40 , G09G5/00
CPC分类号： G06T17/20
摘要： Systems and methods are provided for optimizing the geometric stretch of a parametrization scheme. Given an arbitrary mesh, the systems and methods construct a progressive mesh (PM) such that all meshes in the PM sequence share a common texture parametrization. The systems and methods minimize geometric stretch, i.e., small texture distances mapped onto large surface distances, to balance sampling rates over all locations and directions on the surface. The systems and methods also minimize texture deviation, i.e., “slippage” error based on parametric correspondence, to obtain accurate textured mesh approximations. The technique(s) begin by partitioning the mesh into charts using planarity and compactness heuristics. Then, the technique(s) proceed by creating a stretch-minimizing parametrization within each chart, and by resizing the charts based on the resulting stretch. Then, the technique(s) simplify the mesh while respecting the chart boundaries. Next, the parametrization is re-optimized to reduce both stretch and deviation over the whole PM sequence. The charts may then be packed into a texture atlas for improved texture mapping in connection with a parametrization scheme.
摘要翻译：提供了用于优化参数化方案的几何拉伸的系统和方法。给定任意网格，系统和方法构造渐进网格（PM），使得PM序列中的所有网格共享共同的纹理参数化。系统和方法使几何拉伸最小化，即映射到大表面距离上的小纹理距离，以平衡表面上所有位置和方向上的采样率。系统和方法还使纹理偏差最小化，即基于参数对应的“滑移”误差，以获得精确的纹理网格近似。该技术首先将网格划分为使用平面性和紧凑性启发式的图表。然后，通过在每个图表内创建拉伸最小化参数化，并且基于所得的拉伸来调整图表大小来继续进行该技术。然后，技术简化网格，同时遵循图表边界。接下来，参数化被重新优化以减少整个PM序列的拉伸和偏差。然后可以将图表打包到纹理图集中，以改进与参数化方案相关的纹理映射。

8. 发明授权

US07218322B2 Systems and methods for providing a fine to coarse look ahead in connection with parametrization metrics in a graphics system 有权
标题翻译：与图形系统中的参数化度量有关的系统和方法，用于提供粗略的前瞻性
公开(公告)号：US07218322B2
公开(公告)日：2007-05-15
申请号：US11185102
申请日：2005-07-19
申请人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
发明人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
IPC分类号： G06T15/30
CPC分类号： G06T17/20 , G06T17/205
摘要： Systems and methods are provided for providing a fine-to-coarse look ahead in connection with parametrization in a graphics system. The use of a variety of parametrization metrics may be supplemented and improved by the fine-to-coarse look ahead techniques of the invention. First, the metric of a parametrization is minimized using a coarse-to-fine hierarchical solver, and then accelerated with a fine-to-coarse propagation. The resulting parametrizations have increased texture resolution in surface regions with greater signal detail at all levels of detail in the progressive mesh sequence.
摘要翻译：提供的系统和方法用于提供与图形系统中的参数化相关的精细到粗略的前瞻性。可以通过本发明的精细到粗略的前瞻技术来补充和改进各种参数化度量的使用。首先，使用粗到细分级求解器将参数化的度量最小化，然后以精细到粗糙的传播加速。所得到的参数化在渐进网格序列的所有细节级别具有更大的信号细节的表面区域中增加了纹理分辨率。

9. 发明授权

US07889275B2 System and method for continuous flash 失效
标题翻译：连续闪光的系统和方法
公开(公告)号：US07889275B2
公开(公告)日：2011-02-15
申请号：US10353368
申请日：2003-01-28
申请人： Hugues Herve Hoppe , Kentaro Toyama
发明人： Hugues Herve Hoppe , Kentaro Toyama
IPC分类号： H04N5/222
CPC分类号： H04N5/2355 , H04N5/2354 , H04N5/243
摘要： A photo illumination technology that facilitates user selectable illumination of an existing photo ranging from full artificial flash illumination to ambient light illumination and every gradation between. The technology in one embodiment employs a digital camera feature that captures two photos hundredths of a second apart where one photo is captured in concert with a flash and one is captured with no flash. Compensations are made to reconcile any movement of the subject matter that may have occurred between the two photos and the user is presented with the infinite gradations of illumination on the subject matter when selecting a photo for display or printing.
摘要翻译：一种照片照明技术，便于用户可选择照射从全人造闪光照明到环境光照射以及每个渐变之间的现有照片。在一个实施例中的技术采用数字照相机特征，其捕获彼此相隔百分之二秒的两个照片，其中一个照片与闪光灯一起被捕获，一个被拍摄而不闪光。进行补偿以调节两张照片之间可能发生的主题的任何移动，并且当选择用于显示或打印的照片时，向使用者呈现关于主题的照明的无限渐变。

10. 发明授权

US07224358B2 Systems and methods for optimizing geometric stretch of a parametrization scheme 有权
标题翻译：用于优化参数化方案的几何拉伸的系统和方法
公开(公告)号：US07224358B2
公开(公告)日：2007-05-29
申请号：US10901826
申请日：2004-07-28
申请人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
发明人： Hugues Herve Hoppe , John Michael Snyder , Pedro Vieira Sander , Steven Jacob Gortler
IPC分类号： G06T17/00
CPC分类号： G06T17/20
摘要： Systems and methods are provided for optimizing the geometric stretch of a parametrization scheme. Given an arbitrary mesh, the systems and methods construct a progressive mesh (PM) such that all meshes in the PM sequence share a common texture parametrization. The systems and methods minimize geometric stretch, i.e., small texture distances mapped onto large surface distances, to balance sampling rates over all locations and directions on the surface. The systems and methods also minimize texture deviation, i.e., “slippage” error based on parametric correspondence, to obtain accurate textured mesh approximations. The technique(s) begin by partitioning the mesh into charts using planarity and compactness heuristics. Then, the technique(s) proceed by creating a stretch-minimizing parametrization within each chart, and by resizing the charts based on the resulting stretch. Then, the technique(s) simplify the mesh while respecting the chart boundaries. Next, the parametrization is re-optimized to reduce both stretch and deviation over the whole PM sequence. The charts may then be packed into a texture atlas for improved texture mapping in connection with a parametrization scheme.
摘要翻译：提供了用于优化参数化方案的几何拉伸的系统和方法。给定任意网格，系统和方法构造渐进网格（PM），使得PM序列中的所有网格共享共同的纹理参数化。系统和方法使几何拉伸最小化，即映射到大表面距离上的小纹理距离，以平衡表面上所有位置和方向上的采样率。系统和方法还使纹理偏差最小化，即基于参数对应的“滑移”误差，以获得精确的纹理网格近似。该技术首先将网格划分为使用平面性和紧凑性启发式的图表。然后，通过在每个图表内创建拉伸最小化参数化，并且基于所得的拉伸来调整图表大小来继续进行该技术。然后，技术简化网格，同时遵循图表边界。接下来，参数化被重新优化以减少整个PM序列的拉伸和偏差。然后可以将图表打包到纹理图集中，以改进与参数化方案相关的纹理映射。

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