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31. 发明授权

US08953037B2 Obtaining spatially varying bidirectional reflectance distribution function 有权
标题翻译：获得空间变化的双向反射分布函数
公开(公告)号：US08953037B2
公开(公告)日：2015-02-10
申请号：US13274191
申请日：2011-10-14
申请人： Jiaping Wang , Baining Guo , Peiran Ren , John Michael Snyder , Xin Tong
发明人： Jiaping Wang , Baining Guo , Peiran Ren , John Michael Snyder , Xin Tong
IPC分类号： H04N9/47 , H04N1/00 , G01N21/55
CPC分类号： H04N1/00018 , G01N21/55 , H04N1/00013 , H04N1/00045 , H04N1/00087
摘要： A system for reflectance acquisition of a target includes a light source, an image capture device, and a reflectance reference chart. The reflectance reference chart is fixed relative to the target. The light source provides a uniform band of light across at least a dimension of the target. The image capture device is configured and positioned to encompass at least a portion of the target and at least a portion of the reflectance reference chart within a field-of-view of the image capture device. The image capture device captures a sequence of images of the target and the reflectance reference chart during a scan thereof. Reflectance responses are calculated for the pixels in the sequence of images. Reference reflectance response distribution functions are matched to the calculated reflectance responses, and an image of the target is reconstructed based at least in part on the matched reference reflectance response distribution functions.
摘要翻译：用于目标的反射获取的系统包括光源，图像捕获装置和反射率参考图。反射率参考图表相对于目标是固定的。光源在目标的至少一维上提供均匀的光束。图像捕获设备被配置和定位成在图像捕获设备的视野内包围目标的至少一部分和反射参考图的至少一部分。图像捕获装置在其扫描期间捕获目标的图像序列和反射率参考图。针对图像序列中的像素计算反射响应。参考反射响应分布函数与所计算的反射率响应匹配，并且至少部分地基于匹配的参考反射响应分布函数来重建目标的图像。

32. 发明授权

US08570522B2 Capturing reflected light from a sampling surface 有权
标题翻译：从采样表面捕获反射光
公开(公告)号：US08570522B2
公开(公告)日：2013-10-29
申请号：US13538558
申请日：2012-06-29
申请人： Jiaping Wang , Moshe Benezra , Xin Tong , John Michael Snyder , Baining Guo
发明人： Jiaping Wang , Moshe Benezra , Xin Tong , John Michael Snyder , Baining Guo
IPC分类号： G01N21/55
CPC分类号： G01N21/55
摘要： A mechanism is disclosed for capturing reflected rays from a surface. A first and second lens aligned along a same optical center axis are configured so that a beam of light collimated parallel to the lens center axis directed to a first side, is converged toward the lens center axis on a second side. A first light beam source between the first and second lenses directs a light beam toward the first lens parallel to the optical center axis. Second light beam source(s) on the second side of the first lens, direct a light beam toward a focal plane of the first lens at a desired angle. An image capturing component, at the second side of the second lens, has an image capture surface directed toward the second lens to capture images of the light reflected from a sample capture surface at the focal plane of the first lens.
摘要翻译：公开了用于从表面捕获反射光线的机构。沿着相同的光学中心轴对准的第一和第二透镜被配置为使得平行于指向第一侧的透镜中心轴准直的光束在第二侧上朝向透镜中心轴会聚。第一和第二透镜之间的第一光束源将平行于光学中心轴的光束朝着第一透镜引导。在第一透镜的第二侧上的第二光束源将光束以期望的角度引导到第一透镜的焦平面。在第二透镜的第二侧的图像捕获部件具有指向第二透镜的图像捕获表面，以捕获在第一透镜的焦平面处从样品捕获表面反射的光的图像。

33. 发明申请

US20120268637A1 CAPTURING REFLECTED LIGHT FROM A SAMPLING SURFACE 有权
标题翻译：从采样表面捕获反射光
公开(公告)号：US20120268637A1
公开(公告)日：2012-10-25
申请号：US13538558
申请日：2012-06-29
申请人： Jiaping Wang , Moshe Benezra , Xin Tong , John Michael Snyder , Baining Guo
发明人： Jiaping Wang , Moshe Benezra , Xin Tong , John Michael Snyder , Baining Guo
IPC分类号： G02B13/16 , H04N5/225 , H04N5/335
CPC分类号： G01N21/55
摘要： A mechanism is disclosed for capturing reflected rays from a surface. A first and second lens aligned along a same optical center axis are configured so that a beam of light collimated parallel to the lens center axis directed to a first side, is converged toward the lens center axis on a second side. A first light beam source between the first and second lenses directs a light beam toward the first lens parallel to the optical center axis. Second light beam source(s) on the second side of the first lens, direct a light beam toward a focal plane of the first lens at a desired angle. An image capturing component, at the second side of the second lens, has an image capture surface directed toward the second lens to capture images of the light reflected from a sample capture surface at the focal plane of the first lens.
摘要翻译：公开了用于从表面捕获反射光线的机构。沿着相同的光学中心轴对准的第一和第二透镜被配置为使得平行于指向第一侧的透镜中心轴准直的光束在第二侧上朝向透镜中心轴会聚。第一和第二透镜之间的第一光束源将平行于光学中心轴的光束朝着第一透镜引导。在第一透镜的第二侧上的第二光束源将光束以期望的角度引导到第一透镜的焦平面。在第二透镜的第二侧的图像捕获部件具有指向第二透镜的图像捕获表面，以捕获在第一透镜的焦平面处从样品捕获表面反射的光的图像。

34. 发明申请

US20130093883A1 Obtaining Spatially Varying Bidirectional Reflectance Distribution Function 有权
标题翻译：获得空间变化的双向反射分布函数
公开(公告)号：US20130093883A1
公开(公告)日：2013-04-18
申请号：US13274191
申请日：2011-10-14
申请人： Jiaping Wang , Baining Guo , Peiran Ren , John Michael Snyder , Xin Tong
发明人： Jiaping Wang , Baining Guo , Peiran Ren , John Michael Snyder , Xin Tong
IPC分类号： H04N7/18
CPC分类号： H04N1/00018 , G01N21/55 , H04N1/00013 , H04N1/00045 , H04N1/00087
摘要： A system for reflectance acquisition of a target includes a light source, an image capture device, and a reflectance reference chart. The reflectance reference chart is fixed relative to the target. The light source provides a uniform band of light across at least a dimension of the target. The image capture device is configured and positioned to encompass at least a portion of the target and at least a portion of the reflectance reference chart within a field-of-view of the image capture device. The image capture device captures a sequence of images of the target and the reflectance reference chart during a scan thereof. Reflectance responses are calculated for the pixels in the sequence of images. Reference reflectance response distribution functions are matched to the calculated reflectance responses, and an image of the target is reconstructed based at least in part on the matched reference reflectance response distribution functions.
摘要翻译：用于目标的反射获取的系统包括光源，图像捕获装置和反射率参考图。反射率参考图表相对于目标是固定的。光源在目标的至少一维上提供均匀的光束。图像捕获设备被配置和定位成在图像捕获设备的视野内包围目标的至少一部分和反射参考图的至少一部分。图像捕获装置在其扫描期间捕获目标的图像序列和反射率参考图。针对图像序列中的像素计算反射响应。参考反射响应分布函数与所计算的反射率响应匹配，并且至少部分地基于匹配的参考反射响应分布函数来重建目标的图像。

35. 发明授权

US08248613B2 Capturing reflected light from a sampling surface 有权
标题翻译：从采样表面捕获反射光
公开(公告)号：US08248613B2
公开(公告)日：2012-08-21
申请号：US12769974
申请日：2010-04-29
申请人： Jiaping Wang , Moshe Benezra , Xin Tong , John Michael Snyder , Baining Guo
发明人： Jiaping Wang , Moshe Benezra , Xin Tong , John Michael Snyder , Baining Guo
IPC分类号： G01N21/55
CPC分类号： G01N21/55
摘要： A mechanism is disclosed for capturing reflected rays from a surface. A first and second lens aligned along a same optical center axis are configured so that a beam of light collimated parallel to the lens center axis directed to a first side, is converged toward the lens center axis on a second side. A first light beam source between the first and second lenses directs a light beam toward the first lens parallel to the optical center axis. Second light beam source(s) on the second side of the first lens, direct a light beam toward a focal plane of the first lens at a desired angle. An image capturing component, at the second side of the second lens, has an image capture surface directed toward the second lens to capture images of the light reflected from a sample capture surface at the focal plane of the first lens.
摘要翻译：公开了用于从表面捕获反射光线的机构。沿着相同的光学中心轴对准的第一和第二透镜被配置为使得平行于指向第一侧的透镜中心轴准直的光束在第二侧上朝向透镜中心轴会聚。第一和第二透镜之间的第一光束源将平行于光学中心轴的光束朝着第一透镜引导。在第一透镜的第二侧上的第二光束源将光束以期望的角度引导到第一透镜的焦平面。在第二透镜的第二侧的图像捕获部件具有指向第二透镜的图像捕获表面，以捕获在第一透镜的焦平面处从样品捕获表面反射的光的图像。

36. 发明申请

US20110267619A1 CAPTURING REFLECTED LIGHT FROM A SAMPLING SURFACE 有权
标题翻译：从采样表面捕获反射光
公开(公告)号：US20110267619A1
公开(公告)日：2011-11-03
申请号：US12769974
申请日：2010-04-29
申请人： Jiaping Wang , Moshe Benezra , Xin Tong , John Michael Snyder , Baining Guo
发明人： Jiaping Wang , Moshe Benezra , Xin Tong , John Michael Snyder , Baining Guo
IPC分类号： G01N21/55
CPC分类号： G01N21/55
摘要： A mechanism is disclosed for capturing reflected rays from a surface. A first and second lens aligned along a same optical center axis are configured so that a beam of light collimated parallel to the lens center axis directed to a first side, is converged toward the lens center axis on a second side. A first light beam source between the first and second lenses directs a light beam toward the first lens parallel to the optical center axis. Second light beam source(s) on the second side of the first lens, direct a light beam toward a focal plane of the first lens at a desired angle. An image capturing component, at the second side of the second lens, has an image capture surface directed toward the second lens to capture images of the light reflected from a sample capture surface at the focal plane of the first lens.
摘要翻译：公开了用于从表面捕获反射光线的机构。沿着相同的光学中心轴对准的第一和第二透镜被配置为使得平行于指向第一侧的透镜中心轴准直的光束在第二侧上朝向透镜中心轴会聚。第一和第二透镜之间的第一光束源将平行于光学中心轴的光束朝着第一透镜引导。在第一透镜的第二侧上的第二光束源将光束以期望的角度引导到第一透镜的焦平面。在第二透镜的第二侧的图像捕获部件具有指向第二透镜的图像捕获表面，以捕获在第一透镜的焦平面处从样品捕获表面反射的光的图像。

37. 发明申请

US20100277477A1 Modeling Anisotropic Surface Reflectance with Microfacet Synthesis 有权
标题翻译：用微流化合成法建模各向异性表面反射
公开(公告)号：US20100277477A1
公开(公告)日：2010-11-04
申请号：US12433910
申请日：2009-05-01
申请人： Jiaping Wang , Shuang Zhao , Xin Tong , John M. Snyder , Baining Guo
发明人： Jiaping Wang , Shuang Zhao , Xin Tong , John M. Snyder , Baining Guo
IPC分类号： G06T15/50
CPC分类号： G06T15/506
摘要： Described is a search technology in which spatially varying anisotropic reflectance is modeled using image data captured from a single view. Reflectance at each point is represented using a microfacet-based Bidirectional Reflectance Distribution Function (BRDF). Modeling processes the image data, which provides a partial normal distribution function (NDF) for each surface point. The NDF at each selected point is completed by texture synthesis using similar, overlapping partial NDFs from other points. Also described is a scanning device that illuminates a sample surface from a two-dimensional set of light directions using a linear array of LEDs moved over a flat sample.
摘要翻译：描述了一种搜索技术，其中使用从单个视图捕获的图像数据来建模空间变化的各向异性反射率。每个点的反射率使用基于微量的基于双向反射分布函数（BRDF）表示。建模处理图像数据，为每个表面点提供部分正态分布函数（NDF）。每个选定点的NDF通过纹理合成完成，使用与其他点相似的，重叠的部分NDF。还描述了使用在扁平样品上移动的LED的线性阵列从二维光方向照射样品表面的扫描装置。

38. 发明授权

US07586494B2 Surface detail rendering using leap textures 失效
标题翻译：使用跳跃纹理的表面细节渲染
公开(公告)号：US07586494B2
公开(公告)日：2009-09-08
申请号：US11276931
申请日：2006-03-17
申请人： Xi Wang , Xin Tong , Stephen S. Lin , Baining Guo
发明人： Xi Wang , Xin Tong , Stephen S. Lin , Baining Guo
IPC分类号： G09G5/00
CPC分类号： G06T15/04
摘要： The present surface detail rendering technique provides an efficient technique for applying a mesostructure to a macrostructure for an object that minimizes the amount of memory required for pre-computed data. A leap texture is pre-computed for a mesostructure by classifying each voxel in the mesostructure geometry and assigning a value in the leap texture based upon the classification. The value in the leap texture represents a distance to jump along a ray cast in any view direction when a model is decorated with the mesostructure geometry.
摘要翻译：目前的表面细节渲染技术提供了一种将介观结构应用于最小化预先计算数据所需的存储量的对象的宏结构的有效技术。通过对介观结构几何中的每个体素进行分类，并根据分类在跳跃纹理中分配一个值，为中孔结构预先计算飞跃纹理。跳跃纹理中的值表示当模型用介观结构几何形状装饰时沿着任何视图方向投射的光线跳跃的距离。

39. 发明授权

US06738533B1 Minimum sampling rate and minimum sampling curve for image-based rendering 有权
标题翻译：基于图像的渲染的最小采样率和最小采样曲线
公开(公告)号：US06738533B1
公开(公告)日：2004-05-18
申请号：US09538067
申请日：2000-03-29
申请人： Heung-Yeung Shum , Jin-Xiang Chai , Xin Tong
发明人： Heung-Yeung Shum , Jin-Xiang Chai , Xin Tong
IPC分类号： G06K932
CPC分类号： G06T15/205 , Y10S707/99942
摘要： A minimum sampling rate and a minimum sampling curve for continuous representation of a scene are disclosed. The minimum sampling rate for light-field rendering is determined in accordance with Δ ⁢ ⁢ t max = 1 2 ⁢ K Ω v ⁢ ⁢ fh d , where K&OHgr;v accounts for a light-field signal cut-off frequency, a sampling camera resolution and an output resolution, ƒ specifies a sampling camera focal length, and hd specifies a light-field depth range. The minimum sampling curve for image-based rendering is determined as constrained by Nd=2K&OHgr;vƒhd&Dgr;t, Nd≧1, where Nd is the number of depth layers, &Dgr;t specifies a sampling interval along a t direction. Where IBR is be performed under uncertain depth, the curve is determined as Δ ⁢ ⁢ t max = min z e ⁢ ⁢ ( z e + Δ ⁢ ⁢ η ) ⁢ ⁢ ( z e - Δ ⁢ ⁢ η ) 4 ⁢ ⁢ fK Ω v ⁢ ⁢ Δ ⁢ ⁢ η , where &Dgr;tmax specifies a maximum sampling interval along a t direction, ze specifies an estimated depth, and &Dgr;&eegr; specifies a depth error.
摘要翻译：公开了用于连续表示场景的最小采样率和最小采样曲线。光场渲染的最小采样率根据KOmegav考虑到光场信号截止频率，采样相机分辨率和输出分辨率，f指定采样摄像机焦距，并且hd指定发光二极管，场深度范围。基于图像的渲染的最小采样曲线被确定为Nd = 2KOmegavfhdDeltat，Nd> = 1，其中Nd是深度层的数量，Deltat指定沿t方向的采样间隔。在不确定深度下执行IBR的情况下，确定曲线，其中Deltatmax指定沿t方向的最大采样间隔，ze指定估计深度，Deltaeta指定深度误差。

40. 发明授权

US06643413B1 Manifold mosaic hopping for image-based rendering 失效
标题翻译：用于基于图像的渲染的歧管马赛克跳跃
公开(公告)号：US06643413B1
公开(公告)日：2003-11-04
申请号：US09536485
申请日：2000-03-27
申请人： Heung-Yeung Shum , Li Feng Wang , Xin Tong , Jin-Xiang Chai
发明人： Heung-Yeung Shum , Li Feng Wang , Xin Tong , Jin-Xiang Chai
IPC分类号： G06K940
CPC分类号： G06T3/4007 , G06T3/4038 , G06T7/30 , G06T15/205
摘要： The invention relates to manifold mosaic hopping for image-base rendering (IBR). In one embodiment, a set of manifold mosaics is constructed. Depending on the desired application, the mosaics can be concentric mosaics, parallel mosaics, as well as other types of mosaics. Each mosaic represents a number of unique viewpoints that different from one another in only one direction. From a current camera or viewing position within the set of mosaics, a new position can be moved to, such that the movement is continuous over any one mosaic, and is discrete across the mosaics. An image is rendered by local warping, without interpolation of more than one mosaic.
摘要翻译：本发明涉及用于图像基础渲染（IBR）的歧管马赛克跳跃。在一个实施例中，构成一组歧管马赛克。根据所需的应用，马赛克可以是同心的马赛克，平行的马赛克，以及其他类型的马赛克。每个马赛克表示在一个方向上彼此不同的许多独特视角。从一组马赛克中的当前相机或观看位置，可以移动新位置，使得运动在任何一个马赛克上是连续的，并且在马赛克之间是离散的。图像通过局部翘曲呈现，而不插入多于一个的马赛克。

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