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公开(公告)号:US20090219286A1
公开(公告)日:2009-09-03
申请号:US12038814
申请日:2008-02-28
申请人: Li-Yi Wei , Baoquan Liu , Xu Yang , Ying-Qing Xu , Baining Guo
发明人: Li-Yi Wei , Baoquan Liu , Xu Yang , Ying-Qing Xu , Baining Guo
IPC分类号: G06T17/00
CPC分类号: G06T15/005 , G06T15/06
摘要: A non-linear beam tracing technique that supports full non-linear beam tracing effects including multiple reflections and refractions for computer graphics applications. The technique introduces non-linear beam tracing to render non-linear ray tracing effects such as curved mirror reflection, refraction, caustics, and shadows. Beams are allowed to be non-linear where rays within the same beam are not parallel or do not intersect at a single point. Such is the case when a primary beam bounces off of a surface and spawns one or more secondary rays or beams. Secondary beams can be rendered in a similar manner to primary rays or beams via polygon streaming. Beyond smooth ray bundles, the technique can also be applied to incoherent ray bundles which is useful for rendering bump mapped surfaces.
摘要翻译: 支持完整非线性光束跟踪效果的非线性光束跟踪技术,包括计算机图形应用的多重反射和折射。 该技术引入非线性光束跟踪以渲染非线性光线跟踪效果,例如曲面镜反射,折射,焦散和阴影。 允许光束在同一光束内的光线不平行或不在单个点处相交时是非线性的。 如果主光束从表面反射并产生一个或多个二次光束或光束,则是这种情况。 次级光束可以通过多边形流以与初级光束或光束相似的方式呈现。 除了平滑的光束束之外,该技术也可以应用于对于渲染凹凸贴图表面有用的非相干光束。
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公开(公告)号:US08411087B2
公开(公告)日:2013-04-02
申请号:US12038814
申请日:2008-02-28
申请人: Li-Yi Wei , Baoquan Liu , Xu Yang , Ying-Qing Xu , Baining Guo
发明人: Li-Yi Wei , Baoquan Liu , Xu Yang , Ying-Qing Xu , Baining Guo
IPC分类号: G06T17/00
CPC分类号: G06T15/005 , G06T15/06
摘要: A non-linear beam tracing technique that supports full non-linear beam tracing effects including multiple reflections and refractions for computer graphics applications. The technique introduces non-linear beam tracing to render non-linear ray tracing effects such as curved mirror reflection, refraction, caustics, and shadows. Beams are allowed to be non-linear where rays within the same beam are not parallel or do not intersect at a single point. Such is the case when a primary beam bounces off of a surface and spawns one or more secondary rays or beams. Secondary beams can be rendered in a similar manner to primary rays or beams via polygon streaming. Beyond smooth ray bundles, the technique can also be applied to incoherent ray bundles which is useful for rendering bump mapped surfaces.
摘要翻译: 支持完整非线性光束跟踪效果的非线性光束跟踪技术,包括计算机图形应用的多重反射和折射。 该技术引入非线性光束跟踪以渲染非线性光线跟踪效果,例如曲面镜反射,折射,焦散和阴影。 允许光束在同一光束内的光线不平行或不在单个点处相交时是非线性的。 如果主光束从表面反射并产生一个或多个二次光束或光束,则是这种情况。 次级光束可以通过多边形流以与初级光束或光束相似的方式呈现。 除了平滑的光束束之外,该技术也可以应用于对于渲染凹凸贴图表面有用的非相干光束。
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公开(公告)号:US20120262552A1
公开(公告)日:2012-10-18
申请号:US12971337
申请日:2010-12-17
申请人: Bo Zhang , Ying-Qing Xu , Bill (Billy) P. Chen , Eyal Ofek , Baining Guo
发明人: Bo Zhang , Ying-Qing Xu , Bill (Billy) P. Chen , Eyal Ofek , Baining Guo
CPC分类号: G06F17/30852 , G06F17/30855 , G11B27/28 , H04N21/25841 , H04N21/2743 , H04N21/42202 , H04N21/4223 , H04N21/47202 , H04N21/4788 , H04N21/84
摘要: A video sharing system is described to annotate and navigate tourist videos. An example video sharing system enables non-linear browsing of multiple videos and enriches the browsing experience with contextual and geographic information.
摘要翻译: 描述视频共享系统来注释和浏览旅游视频。 一个示例视频共享系统可以对多个视频进行非线性浏览,并使用上下文和地理信息丰富浏览体验。
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公开(公告)号:US06871166B1
公开(公告)日:2005-03-22
申请号:US09620533
申请日:2000-07-23
申请人: Ying-Qing Xu , Baining Guo , Hua Zhong , Heung-Yeung Shum
发明人: Ying-Qing Xu , Baining Guo , Hua Zhong , Heung-Yeung Shum
CPC分类号: D04B37/00
摘要: Knitwear modeling is disclosed. A macrostructure corresponding to a three-dimensional object is generated, based on a stitch pattern and optionally a color pattern. Yarn microstructure is generated and applied to the macrostructure to yield a knitwear model. The stitch positions of the macrostructure can be perturbed to achieve stitch position irregularities. The fluffiness of the yarn microstructure can be controlled. In an alternative embodiment, a two-dimensional knitwear texture is generated, which can then be mapped to a three-dimensional object to yield a knitwear model.
摘要翻译: 披露了针织品造型。 基于针迹图案和可选的颜色图案,生成对应于三维物体的宏观结构。 生产纱线微观结构并应用于宏观结构以产生针织品模型。 可以扰动宏观结构的缝合位置以达到缝合位置不规则。 可以控制纱线微结构的蓬松性。 在替代实施例中,生成二维针织品纹理,然后将其映射到三维对象以产生针织品模型。
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公开(公告)号:US07129944B2
公开(公告)日:2006-10-31
申请号:US11000607
申请日:2004-12-01
申请人: Baining Guo , Stephen S. Lin , Heung-Yeung Shum , Ying-Qing Xu , Yanyun Chen
发明人: Baining Guo , Stephen S. Lin , Heung-Yeung Shum , Ying-Qing Xu , Yanyun Chen
IPC分类号: G06T15/60
CPC分类号: G06T15/50 , G06T15/00 , G06T17/00 , G06T2210/16 , G06T2210/62
摘要: A method and system for efficient synthesis of photorealistic free-form knitwear, where a single cross-section of yarn serves as the basic primitive for modeling entire articles of knitwear. This primitive, called the lumislice, describes radiance from a yarn cross-section based on fine-level interactions, including occlusion, shadowing, and multiple scattering, among yarn fibers. By representing yarn as a sequence of identical but rotated cross-sections, the lumislice can effectively propagate local microstructure over arbitrary stitch patterns and knitwear shapes. This framework accommodates varying levels of detail and capitalizes on hardware-assisted transparency blending. To further enhance realism, a technique for generating soft shadows from yarn is also introduced.
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公开(公告)号:US07042456B2
公开(公告)日:2006-05-09
申请号:US10623425
申请日:2003-07-18
申请人: Yanyun Chen , Baining Guo , Ying-Qing Xu , Heung-Yeung Shum
发明人: Yanyun Chen , Baining Guo , Ying-Qing Xu , Heung-Yeung Shum
IPC分类号: G09G5/00 , G06F15/167
摘要: The present invention provides a systematic method for rendering feathers. In one aspect, a segment of a rachis having a first barb and second barb is generated. The first barb is generated based on a first barb length and the second barb is generated based on a second barb length.
摘要翻译: 本发明提供了一种用于渲染羽毛的系统方法。 在一个方面,产生具有第一倒钩和第二倒钩的轴的段。 基于第一倒钩长度产生第一倒钩,并且基于第二倒钩长度产生第二倒钩。
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公开(公告)号:US20050256721A1
公开(公告)日:2005-11-17
申请号:US11187507
申请日:2005-07-22
申请人: Lin Liang , Yanyun Chen , Ying-Qing Xu , Baining Guo , Heung-Yeung Shum
发明人: Lin Liang , Yanyun Chen , Ying-Qing Xu , Baining Guo , Heung-Yeung Shum
CPC分类号: G06T13/60 , G06T13/80 , G06T15/04 , G06T2210/24 , H04N5/262
摘要: A system and process for adding a photorealistic rendering of a body of water to a virtual 3D scene or image and creating a video therefrom having interactive water effects. A region of water is added to an image by adding an area depicting the original scene as it would appear if reflected by still body of water. Then, the appearance of the added water region is distorted over a series of image frames in such a way as to simulate how the reflected scene would look if the surface of the water were in motion. The water can have dynamic waves and the user can interact with the water in numbers of ways, including generating ripples on the water surface and creating rain. In addition, these effects can be achieved at full screen resolution with the use of the latest graphics hardware by employing a texture shifting technique.
摘要翻译: 一种用于向虚拟3D场景或图像添加水体的真实感渲染并从其创建具有交互式水效果的视频的系统和过程。 通过添加描绘原始场景的区域,如水面反映的那样,将会显示水域。 然后,增加的水域的外观在一系列图像帧上变形,以模拟如果水的表面运动,反射场景将如何看起来。 水可以具有动态波,用户可以以多种方式与水相互作用,包括在水面上产生波纹并产生雨水。 此外,通过采用纹理移位技术,通过使用最新的图形硬件,可以在全屏幕分辨率下实现这些效果。
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公开(公告)号:US20050115285A1
公开(公告)日:2005-06-02
申请号:US10995986
申请日:2004-11-20
申请人: Ying-Qing Xu , Baining Guo , Hua Zhong , Heung-Yeung Shum
发明人: Ying-Qing Xu , Baining Guo , Hua Zhong , Heung-Yeung Shum
CPC分类号: D04B37/00
摘要: Knitwear modeling is disclosed. A macrostructure correponding to a three-dimensional object is generated, based on a stitch pattern and optionally a color pattern. Yarn microstructure is generated and applied to the macrostructure to yield a knitwear model. The stitch positions of the macrostructure can be perturbed to achieve stitch position irregularities. The fluffiness of the yarn microstructure can be controlled. In an alternative embodiment, a two-dimensional knitwear texture is generated, which can then be mapped to a three-dimensional object to yield a knitwear model.
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公开(公告)号:US20050012741A1
公开(公告)日:2005-01-20
申请号:US10622630
申请日:2003-07-18
申请人: Yanyun Chen , Baining Guo , Ying-Qing Xu , Heung-Yeung Shum
发明人: Yanyun Chen , Baining Guo , Ying-Qing Xu , Heung-Yeung Shum
摘要: The present invention provides a computer implemented method for placing feathers on a surface. The method includes providing a surface having a plurality of vertices and establishing a growing direction for each of the plurality of vertices on the surface. Feathers are placed on the surface based on the plurality of vertices and the growing direction.
摘要翻译: 本发明提供了一种用于将羽毛放置在表面上的计算机实现的方法。 该方法包括提供具有多个顶点的表面,并为表面上的多个顶点中的每一个顶点建立生长方向。 基于多个顶点和生长方向将羽毛放置在表面上。
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公开(公告)号:US09167290B2
公开(公告)日:2015-10-20
申请号:US12971337
申请日:2010-12-17
申请人: Bo Zhang , Ying-Qing Xu , Eyal Ofek , Baining Guo
发明人: Bo Zhang , Ying-Qing Xu , Bill P Chen , Eyal Ofek , Baining Guo
IPC分类号: G11B27/00 , H04N21/4223 , G06F17/30 , H04N21/258 , H04N21/2743 , H04N21/422 , H04N21/472 , H04N21/4788 , H04N21/84 , G11B27/28
CPC分类号: G06F17/30852 , G06F17/30855 , G11B27/28 , H04N21/25841 , H04N21/2743 , H04N21/42202 , H04N21/4223 , H04N21/47202 , H04N21/4788 , H04N21/84
摘要: A video sharing system is described to annotate and navigate tourist videos. An example video sharing system enables non-linear browsing of multiple videos and enriches the browsing experience with contextual and geographic information.
摘要翻译: 描述视频共享系统来注释和浏览旅游视频。 一个示例视频共享系统可以对多个视频进行非线性浏览,并使用上下文和地理信息丰富浏览体验。
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