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公开(公告)号：US06792140B2
公开(公告)日：2004-09-14
申请号：US09842972
申请日：2001-04-26
IPC分类号： G06K900
CPC分类号： G06T7/564 , G06T7/557 , G06T2200/08
摘要： A system digitizes a three-dimensional object as a three-dimension model by placing the object on a turntable while taking two sets of corresponding images. The first set of images and the second set of images are obtained while rotating the turntable to a various positions and illuminated the object with the overhead lights and backlights. There is a one to one correspondence for images in each set for each position of the turntable. Object shape data and texture data are respectively extracted from the first and second set of images. The object shape data is correlated with the object texture data to construct the three-dimensional digital model stored in a memory of a computer system.
摘要翻译： 系统通过将对象放置在转盘上同时采取两组相应的图像，将三维物体数字化为三维模型。 获得第一组图像和第二组图像，同时将转盘旋转到各种位置，并用顶灯和背光照亮物体。 对于转盘的每个位置，每组中的图像有一对一的对应关系。 从第一和第二组图像分别提取对象形状数据和纹理数据。 对象形状数据与对象纹理数据相关联，以构建存储在计算机系统的存储器中的三维数字模型。
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12.发明授权公开(公告)号：US08565909B2
公开(公告)日：2013-10-22
申请号：US13031036
申请日：2011-02-18
IPC分类号： G06F19/00
CPC分类号： B33Y50/00 , B29C64/00 , B29C64/386 , B33Y80/00 , G06F17/50 , G06F2217/10 , G06F2217/12
摘要： In an object generation system, consumable base materials are characterized in a characterization process wherein an object generation system can use a plurality of so-characterized base materials. User input representing a desired object and set of characteristics for that desired object are processed, using a computer or computing device, to derive a mapping of locations for placement of portions of the plurality of base materials such that when the mapping is provided to an object generator, the generated object approximates the representing a desired object and set of characteristics. The characterization of a base material might include elasticity of the base material, the user input might be a desired shape and elasticity, the object generator might be a 3D multi-material printer and the generated object might at least approximate the desired shape and elasticity as a result of being constructed from the plurality of base materials used by the printer.
摘要翻译： 在对象生成系统中，消耗性基材的特征在于表征过程，其中对象生成系统可以使用多个如此表征的基材。 使用计算机或计算设备处理表示期望对象的所需对象和特征集的用户输入，以导出用于放置多个基础材料的部分的位置的映射，使得当将映射提供给对象时 生成的对象近似表示期望的对象和特征集合。 基材的表征可能包括基材的弹性，用户输入可能是期望的形状和弹性，对象生成器可以是3D多材料打印机，并且所生成的对象可以至少近似所需的形状和弹性，如 这是由打印机使用的多种基材构成的结果。
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公开(公告)号：US07756356B2
公开(公告)日：2010-07-13
申请号：US11683833
申请日：2007-03-08
IPC分类号： G06K9/36
摘要： A method factorizing a sequence of images acquired of a scene into lighting components. The scene is illuminated by a moving light source. An appearance profile is constructed for each pixel in the sequence of images. The appearance profile is a vector representing intensities of the pixel at instances in time. The appearance profiles are factorized into a shadow component, a skylight component, and a sunlight component.
摘要翻译： 将场景获取的图像序列分解为照明组件的方法。 场景由移动的光源照亮。 为图像序列中的每个像素构造外观轮廓。 外观轮廓是表示时间上的像素的强度的矢量。 外观轮廓被分解为阴影部件，天窗部件和阳光部件。
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公开(公告)号：US07599555B2
公开(公告)日：2009-10-06
申请号：US11092376
申请日：2005-03-29
IPC分类号： G06K9/34
CPC分类号： H04N5/272
摘要： A method compresses a set of correlated signals by first converting each signal to a sequence of integers, which are further organized as a set of bit-planes. An inverse accumulator is applied to each bit-plane to produce a bit-plane of shifted bits, which are permuted according to a predetermined permutation to produce bit-planes of permuted bits. Each bit-plane of permuted bits is partitioned into a set of blocks of bits. Syndrome bits are generated for each block of bits according to a rate-adaptive base code. Subsequently, the syndrome bits are decompressed in a decoder to recover the original correlated signals.
摘要翻译： 一种方法通过首先将每个信号转换成整数序列来压缩一组相关信号，该整数序列进一步被组织为一组位平面。 反向累加器被施加到每个位平面以产生位移位的位平面，它们根据预定的排列被排列以产生置换位的位平面。 置换位的每个位平面被划分成一组位块。 根据速率自适应基本码为每个位块产生综合位。 随后，解码器中的校正子位解压缩以恢复原始的相关信号。
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公开(公告)号：US20060227137A1
公开(公告)日：2006-10-12
申请号：US11092426
申请日：2005-03-29
申请人： Tim Weyrich , Wojciech Matusik , Hanspeter Pfister , Henrik Jensen , Wai Ngan , Markus Gross
发明人： Tim Weyrich , Wojciech Matusik , Hanspeter Pfister , Henrik Jensen , Wai Ngan , Markus Gross
IPC分类号： G06T15/50
CPC分类号： G06T15/50
摘要： A face is scanned to obtain a three-dimensional geometry of the face, images are also acquired of the face, and subsurface scattering of the face is measured. A translucency map is determined from the subsurface reflectance. A total surface reflectance and a normal map are estimated from the three-dimensional geometry and the images, and diffuse reflectance is estimated using the total reflectance. An albedo map is determined from the diffuse reflectance. The diffuse reflectance is subtracted from the total reflectance to obtain a surface reflectance. A set of bi-directional reflectance functions is fitted to the surface reflectance. Then, the set of bi-directional reflectance distribution functions, the albedo map, and the translucency map are combined to form a skin reflectance model of the face.
摘要翻译： 扫描面部以获得脸部的三维几何图像，并且还获取脸部的图像，并且测量脸部的表面下散射。 从地下反射率确定半透明度图。 从三维几何图像和图像估计总表面反射率和法线图，并且使用总反射率来估计漫反射。 从漫反射率确定反照率图。 从总反射率中减去漫反射，得到表面反射率。 一组双向反射函数适合表面反射率。 然后，将该组双向反射分布函数，反照率图和半透明度图组合，以形成面部的皮肤反射率模型。
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公开(公告)号：US20050185711A1
公开(公告)日：2005-08-25
申请号：US10783542
申请日：2004-02-20
CPC分类号： H04N19/00 , H04N13/194 , H04N13/243 , H04N13/305 , H04N19/44 , H04N19/597
摘要： A three-dimensional television system includes an acquisition stage, a display stage and a transmission network. The acquisition stage includes multiple video cameras configured to acquire input videos of a dynamically changing scene in real-time. The display stage includes a three-dimensional display unit configured to concurrently display output videos generated from the input videos. The transmission network connects the acquisition stage to the display stage.
摘要翻译： 三维电视系统包括采集阶段，显示阶段和传输网络。 采集阶段包括配置成实时获取动态变化的场景的输入视频的多个摄像机。 显示级包括被配置为同时显示从输入视频生成的输出视频的三维显示单元。 传输网络将采集阶段连接到显示阶段。
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公开(公告)号：US20080218516A1
公开(公告)日：2008-09-11
申请号：US11683833
申请日：2007-03-08
IPC分类号： G06T15/60
摘要： A method factorizing a sequence of images acquired of a scene into lighting components. The scene is illuminated by a moving light source. An appearance profile is constructed for each pixel in the sequence of images. The appearance profile is a vector representing intensities of the pixel at instances in time. The appearance profiles are factorized into a shadow component, a skylight component, and a sunlight component.
摘要翻译： 将场景获取的图像序列分解为照明组件的方法。 场景由移动的光源照亮。 为图像序列中的每个像素构造外观轮廓。 外观轮廓是表示时间上的像素的强度的矢量。 外观轮廓被分解为阴影部件，天窗部件和阳光部件。
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18.发明授权System and method for interactively rendering objects with surface light fields and view-dependent opacity 失效用于交互式渲染具有表面光场和视图相关不透明度的对象的系统和方法公开(公告)号：US07194125B2
公开(公告)日：2007-03-20
申请号：US10318708
申请日：2002-12-13
CPC分类号： G06T15/205
摘要： A method renders a model of a 3D object. A polygon model of the 3D object is generated, and a set of input images are acquired of the object. For each vertex of the polygon model, a set of visible views are located, and a set of closest views are selected from the visibility views. Blending weights are determined for each closest view. Then, the each polygon in the model is rendered into an output image. The rendering is performed by blending images of the set of input images corresponding to the set of closest views of each vertex of the polygon using the blending weights.
摘要翻译： 一种方法呈现3D对象的模型。 生成3D对象的多边形模型，并且获取对象的一组输入图像。 对于多边形模型的每个顶点，定位一组可见视图，并从可见性视图中选择一组最接近的视图。 为每个最接近的视图确定混合权重。 然后，将模型中的每个多边形呈现为输出图像。 通过使用混合权重将与多边形的每个顶点的最近视图的集合对应的输入图像集合的图像混合来执行呈现。
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公开(公告)号：US20050285860A1
公开(公告)日：2005-12-29
申请号：US10871908
申请日：2004-06-18
CPC分类号： G06T15/506 , G06T7/40 , G06T15/50
摘要： A method and system estimates a reflectance function of an arbitrary scene. The scene is illuminated under various lighting condition. For each lighting condition there is an associated illumination image and an observed image. Multiple, non-overlapping kernels are determined for each pixel in a reflectance image from the pairs of illumination and observed images. A weight is then determined for each kernel to estimate the reflectance function represented as the reflectance image.
摘要翻译： 方法和系统估计任意场景的反射函数。 场景在各种照明条件下照亮。 对于每个照明条件，存在相关联的照明图像和观察图像。 针对来自照明对和观察图像的反射率图像中的每个像素确定多个不重叠的内核。 然后确定每个核的权重以估计表示为反射率图像的反射函数。
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公开(公告)号：US06791542B2
公开(公告)日：2004-09-14
申请号：US10172963
申请日：2002-06-17
IPC分类号： G06T1700
CPC分类号： G06T15/205 , G06T17/20
摘要： A method models a three-dimensional object by first acquiring alpha mattes of the object for multiple viewpoints. The alpha mattes are then projected onto a surface hull completely enclosing the object to construct an opacity hull storing opacity values of the surface of the object. The object is illuminated for various lighting conditions while images are acquired. The images are projected onto the opacity hull to render the object under arbitrary lighting conditions for arbitrary viewpoints.
摘要翻译： 一种方法通过首先获取多个视点的对象的alpha遮罩来建模三维对象。 然后将alpha mattes投影到完全包围对象的表面船体上，以构建存储对象表面的不透明度值的不透明度船体。 当获取图像时，对象被照亮用于各种照明条件。 将图像投影到不透明度船体上，以便在任意视点的任意照明条件下渲染物体。
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