公开(公告)号：US07760202B2

公开(公告)日：2010-07-20

申请号：US12356066

申请日：2009-01-19

申请人： Rolf Herken ,  Martin Grabenstein

发明人： Rolf Herken ,  Martin Grabenstein

IPC分类号： G06T15/50

CPC分类号： G06T15/50 ,  G06T15/506 ,  G06T15/55

摘要： A computer graphics system generates pixel values for pixels in an image of objects in a scene, using strictly-deterministic low-discrepancy sequences, illustratively Halton sequences, as sample points for evaluating integrals which are used to simulate a number of computer graphic techniques. The computer graphics system uses the low-discrepancy sequence to ensure that the sample points are evenly distributed over a respective region or time interval, thereby reducing error in the image which can result from clumping of such sample points which can occur in the Monte Carlo technique. In particular, the invention facilitates the generation of images of improved quality when using the same number of sample points at the same computational cost as in the Monte Carlo technique.

摘要翻译： 计算机图形系统使用严格确定性的低差异序列（例如Halton序列）来生成用于场景中的对象的图像中的像素的像素值，作为用于评估用于模拟多个计算机图形技术的积分的采样点。 计算机图形系统使用低差异序列来确保采样点在相应的区域或时间间隔上均匀分布，从而减少可能由蒙特卡罗技术中发生的这些采样点聚集而导致的图像误差 。 特别地，当以与蒙特卡罗技术相同的计算成本使用相同数量的采样点时，本发明有助于产生改进质量的图像。

公开(公告)号：US06529193B1

公开(公告)日：2003-03-04

申请号：US08880418

申请日：1997-06-23

申请人： Rolf Herken ,  Martin Grabenstein

发明人： Rolf Herken ,  Martin Grabenstein

IPC分类号： G06T1550

CPC分类号： G06T15/50 ,  G06T15/506 ,  G06T15/55

摘要： A computer graphics system and a method for generating pixel values in an image of objects using strictly-deterministic low-discrepancy sequences as sample points for evaluating integrals which are used to simulate a number of computer graphic techniques including soft shadows, simulation of depth of field, motion blur, jittering, and global illumination. Unlike the random numbers used in connection with the Monte Carlo technique, the low discrepancy sequences ensure that the sample points are evenly distributed over a respective region or time interval, thereby reducing clumping of such sample points. The invention facilitates the generation of images of improved quality when using the same number of sample points at the same computational cost as in the Monte Carlo technique.

摘要翻译： 计算机图形系统和用于使用严格确定性的低差异序列作为用于评估积分的样本点来生成对象图像中的像素值的方法，所述积分用于模拟包括软阴影在内的许多计算机图形技术，景深模拟 ，运动模糊，抖动和全局照明。 与与蒙特卡罗技术相关的随机数不同，低差异序列确保采样点在相应的区域或时间间隔内均匀分布，从而减少这些采样点的聚集。 当以与蒙特卡罗技术相同的计算成本使用相同数量的采样点时，本发明有助于产生改进质量的图像。

公开(公告)号：US07479962B2

公开(公告)日：2009-01-20

申请号：US11450130

申请日：2006-06-08

申请人： Rolf Herken ,  Martin Grabenstein

发明人： Rolf Herken ,  Martin Grabenstein

IPC分类号： G06T15/50

CPC分类号： G06T15/50 ,  G06T15/506 ,  G06T15/55

摘要： A computer graphics system generates pixel values for pixels in an image of objects in a scene, using strictly-deterministic low-discrepancy sequences, illustratively Halton sequences, as sample points for evaluating integrals which are used to simulate a number of computer graphic techniques. The computer graphics system uses the low-discrepancy sequence to ensure that the sample points are evenly distributed over a respective region or time interval, thereby reducing error in the image which can result from clumping of such sample points which can occur in the Monte Carlo technique. In particular, the invention facilitates the generation of images of improved quality when using the same number of sample points at the same computational cost as in the Monte Carlo technique.

摘要翻译： 计算机图形系统使用严格确定性的低差异序列（例如Halton序列）来生成用于场景中的对象的图像中的像素的像素值，作为用于评估用于模拟多个计算机图形技术的积分的采样点。 计算机图形系统使用低差异序列来确保采样点在相应的区域或时间间隔上均匀分布，从而减少可能由蒙特卡罗技术中发生的这些采样点聚集而导致的图像误差 。 特别地，当以与蒙特卡罗技术相同的计算成本使用相同数量的采样点时，本发明有助于产生改进质量的图像。

公开(公告)号：US20070018978A1

公开(公告)日：2007-01-25

申请号：US11450130

申请日：2006-06-08

申请人： Rolf Herken ,  Martin Grabenstein

发明人： Rolf Herken ,  Martin Grabenstein

IPC分类号： G06T15/50

CPC分类号： G06T15/50 ,  G06T15/506 ,  G06T15/55

摘要： A computer graphics system generates pixel values for pixels in an image of objects in a scene, using strictly-deterministic low-discrepancy sequences, illustratively Halton sequences, as sample points for evaluating integrals which are used to simulate a number of computer graphic techniques. The computer graphics system uses the low-discrepancy sequence to ensure that the sample points are evenly distributed over a respective region or time interval, thereby reducing error in the image which can result from clumping of such sample points which can occur in the Monte Carlo technique. In particular, the invention facilitates the generation of images of improved quality when using the same number of sample points at the same computational cost as in the Monte Carlo technique.

摘要翻译： 计算机图形系统使用严格确定性的低差异序列（例如Halton序列）来生成用于场景中的对象的图像中的像素的像素值，作为用于评估用于模拟多个计算机图形技术的积分的采样点。 计算机图形系统使用低差异序列来确保采样点在相应的区域或时间间隔上均匀分布，从而减少可能由蒙特卡罗技术中发生的这些采样点聚集而导致的图像误差 。 特别地，当以与蒙特卡罗技术相同的计算成本使用相同数量的采样点时，本发明有助于产生改进质量的图像。

公开(公告)号：US07071938B2

公开(公告)日：2006-07-04

申请号：US10299733

申请日：2002-11-18

申请人： Rolf Herken ,  Martin Grabenstein

发明人： Rolf Herken ,  Martin Grabenstein

IPC分类号： G06T15/50

CPC分类号： G06T15/50 ,  G06T15/506 ,  G06T15/55

摘要： A computer graphics system generates pixel values for pixels in an image of objects in a scene, using strictly-deterministic low-discrepancy sequences, as sample points for evaluating integrals which are used to simulate a number of computer graphic techniques, including soft shadows generated for scenes illuminated by a light source having a finite extent, such as a disk, simulation of depth of field; motion blur; and jittering. The computer graphics system uses the low-discrepancy sequence to generate sample points. The low discrepancy sequences ensure that the sample points are evenly distributed over a respective region or time interval, thereby reducing error in the image which can result from clumping of such sample points which can occur in the Monte Carlo technique. The invention facilitates the generation of images of improved quality when using the same number of sample points at the same computational cost as in the Monte Carlo technique.

摘要翻译： 计算机图形系统使用严格确定性的低差异序列来生成场景中对象的图像中的像素的像素值，作为用于评估积分的采样点，其用于模拟多个计算机图形技术，包括为 由具有有限程度的光源照射的场景，例如盘，景深的模拟; 运动模糊 和抖动。 计算机图形系统使用低差异序列来生成采样点。 低差异序列确保采样点在相应的区域或时间间隔上均匀分布，从而减少由蒙特卡罗技术中可能发生的这些采样点聚集而导致的图像误差。 当以与蒙特卡罗技术相同的计算成本使用相同数量的采样点时，本发明有助于产生改进质量的图像。

公开(公告)号：US20090153558A1

公开(公告)日：2009-06-18

申请号：US12356066

申请日：2009-01-19

申请人： Rolf Herken ,  Martin Grabenstein

发明人： Rolf Herken ,  Martin Grabenstein

IPC分类号： G06T15/50

CPC分类号： G06T15/50 ,  G06T15/506 ,  G06T15/55

摘要： A computer graphics system generates pixel values for pixels in an image of objects in a scene, using strictly-deterministic low-discrepancy sequences, illustratively Halton sequences, as sample points for evaluating integrals which are used to simulate a number of computer graphic techniques. The computer graphics system uses the low-discrepancy sequence to ensure that the sample points are evenly distributed over a respective region or time interval, thereby reducing error in the image which can result from clumping of such sample points which can occur in the Monte Carlo technique. In particular, the invention facilitates the generation of images of improved quality when using the same number of sample points at the same computational cost as in the Monte Carlo technique.

摘要翻译： 计算机图形系统使用严格确定性的低差异序列（例如Halton序列）来生成用于场景中的对象的图像中的像素的像素值，作为用于评估用于模拟多个计算机图形技术的积分的采样点。 计算机图形系统使用低差异序列来确保采样点在相应的区域或时间间隔上均匀分布，从而减少可能由蒙特卡罗技术中发生的这些采样点聚集而导致的图像误差 。 特别地，当以与蒙特卡罗技术相同的计算成本使用相同数量的采样点时，本发明有助于产生改进质量的图像。