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41.发明授权Incrementally calculated cut-plane region for viewing a portion of a volume data set in real-time 有权增量计算的切面区域用于实时查看体数据集的一部分公开(公告)号：US06211884B1
公开(公告)日：2001-04-03
申请号：US09190303
申请日：1998-11-12
IPC分类号： G06T1700
CPC分类号： G06T15/40
摘要： A volume rendering processor establishes a cut-plane region of a volume data set, the cut-plane region being defined by a plane equation and minimum and maximum distance values representing the values of the plane equation at outer faces of the cut-plane region. The plane equation is evaluated for each sample of the volume data, the result is compared with the minimum and maximum distance values to determine whether the sample is in the cut-plane region, and the visibility of the sample is adjusted depending on the comparison result. The plane equation is evaluated by continually accumulating the coefficient values in an order indicated by the ordering of the sequence of samples. Evaluation logic includes an accumulator, a 2-input adder, registers for saving intermediate accumulated values in corresponding dimensions of the volume data, multiplexers for selecting the adder inputs from among the coefficient values, the output of the accumulator and the values in the registers, and visibility calculation logic that adjusts the samples' visibility depending on the relationship between the output of the accumulator and the minimum and maximum distance values. In an inclusive operating mode, the visibility of the sample is set to zero if it is outside the cut-plane region, and in an exclusive mode the sample's visibility is set to zero if it lies in the cut-plane region. Falloff regions at each face of the cut-plane region are used to gradually adjust sample visibility to provide a smooth appearance.
摘要翻译： 体绘制处理器建立体数据集的切面区域，切面区域由平面方程定义，最小和最大距离值表示在切面区域的外表面处的平面方程的值。 对体积数据的每个样本评估平面方程，将结果与最小和最大距离值进行比较，以确定样品是否在切面区域，并根据比较结果调整样品的可见性 。 通过以样本序列的顺序指示的顺序连续累积系数值来评估平面方程。 评估逻辑包括累加器，2-输入加法器，用于在体数据的相应维度中保存中间累加值的寄存器，用于从系数值中选择加法器输入的多路复用器，累加器的输出和寄存器中的值， 以及可见度计算逻辑，其根据累加器的输出与最小和最大距离值之间的关系来调整样本的可视性。 在包容性操作模式中，如果样本在切面平面区域之外，则将样本的可视性设置为零，并且在独占模式中，如果样本的可视性位于切割平面区域中，则该样本的可视性设置为零。 使用切面区域的每个面的衰减区域逐渐调整样品的可见度以提供平滑的外观。
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42.发明授权Method and system for determining poses of objects from range images using adaptive sampling of pose spaces 有权使用姿态空间的自适应采样来确定来自范围图像的物体姿态的方法和系统公开(公告)号：US07844106B2
公开(公告)日：2010-11-30
申请号：US12238618
申请日：2008-09-26
IPC分类号： G06K9/00
CPC分类号： G06T7/77 , G06T7/75 , G06T2200/28 , G06T2207/10028 , G06T2207/20104 , G06T2207/30164
摘要： A method for determining a pose of an object from a range image is presented. A distribution of poses for an object is determined from a model of the object. A set of reference poses is selected according to the distribution, such that more reference poses are selected for more probable poses than less probable poses. A reference image for each reference pose is generated, and the reference pose used to generate the reference image that best matches a range image including the object is assigned as the pose of the object.
摘要翻译： 提出了一种从范围图像中确定对象姿态的方法。 从对象的模型确定对象的姿势分布。 根据分布选择一组参考姿势，使得为更可能的姿势选择更多的参考姿势而不是可能的姿势。 生成每个参考姿势的参考图像，并且将用于生成与包括对象的范围图像最匹配的参考图像的参考姿势分配为对象的姿态。
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公开(公告)号：US07844105B2
公开(公告)日：2010-11-30
申请号：US11738642
申请日：2007-04-23
IPC分类号： G06K9/00
CPC分类号： G06K9/00208 , G06T7/74 , G06T2207/10028
摘要： A method and system determines a pose of an object by comparing an input range image acquired of a scene including the input object to each of a set of reference range image of a reference object, such that each reference range images has an associated different pose, and the reference object is similar to the input object. Then, the pose associated with the reference range image which best matches the input range image is selected as the pose of the input object.
摘要翻译： 方法和系统通过将获取的包括输入对象的场景的输入范围图像与参考对象的一组参考范围图像的每一个进行比较来确定对象的姿态，使得每个参考范围图像具有相关联的不同姿势， 并且引用对象类似于输入对象。 然后，选择与输入范围图像最佳匹配的参考范围图像相关联的姿势作为输入对象的姿态。
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公开(公告)号：US07609860B2
公开(公告)日：2009-10-27
申请号：US11251222
申请日：2005-10-14
CPC分类号： G06K9/4661
摘要： A method recognizes a face in an image. A morphable model having shape and pose parameters is fitted to a face in an image to construct a three-dimensional model of the face. Texture is extracted from the face in the image using the three-dimensional model. The shape and texture are projected into a bilinear illumination model to generate illumination bases for the face in the image. The illumination bases for the face in the image are compared to illumination bases of each of a plurality of bilinear illumination models of known faces to identify the face in the image.
摘要翻译： 一种方法识别图像中的一张脸。 具有形状和姿态参数的变形模型被拟合到图像中的面部以构建面部的三维模型。 使用三维模型从图像中的脸部提取纹理。 将形状和纹理投影到双线性照明模型中以为图像中的脸部产生照明基础。 将图像中的脸部的照明基底与已知面部的多个双线性照明模型中的每一个的照明基底进行比较，以识别图像中的脸部。
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45.发明授权Method for determining optimal viewpoints for 3D face modeling and face recognition 有权用于确定3D脸部建模和面部识别的最佳视点的方法公开(公告)号：US07426292B2
公开(公告)日：2008-09-16
申请号：US10836004
申请日：2004-04-30
申请人： Baback Moghaddam , Hanspeter Pfister , Jinho Lee
发明人： Baback Moghaddam , Hanspeter Pfister , Jinho Lee
IPC分类号： G06K9/00
CPC分类号： G06K9/00288 , G06T17/00
摘要： A method determines an optimal set of viewpoints to acquire a 3D shape of a face. A view-sphere is tessellated with a plurality of viewpoint cells. The face is at an approximate center of the view-sphere. Selected viewpoint cells are discarded. The remaining viewpoint cells are clustered to a predetermined number of viewpoint cells according to a silhouette difference metric. The predetermined number of viewpoint cells are searched for a set of optimal viewpoint cells to construct a 3D model of the face.
摘要翻译： 一种方法确定获得面部3D形状的最佳视点集合。 用多个视点单元镶嵌视野球。 脸部位于视野球的大致中心。 所选视点单元被丢弃。 根据剪影差异度量，剩余的视点单元被聚集到预定数量的视点单元。 搜索预定数量的视点单元以获得一组最佳视点单元，以构造面部的3D模型。
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公开(公告)号：US07212664B2
公开(公告)日：2007-05-01
申请号：US10636355
申请日：2003-08-07
IPC分类号： G06K9/00
CPC分类号： G06K9/00288 , G06T17/00
摘要： A method reconstructs or synthesizes heads from 3D models of heads and 2D silhouettes of heads. A 3D statistical model is generated from multiple real human heads. The 3D statistical model includes a model parameter in the form of basis vectors and corresponding coefficients. Multiple 2D silhouettes of a particular head are acquired using a camera for example. The 3D statistical model is fitted to multiple 2D silhouettes to determine a particular value of the model parameter corresponding to the plurality of 2D silhouettes. Then, the 3D statistical model is rendered according to the particular value of the model parameter to reconstruct the particular head.
摘要翻译： 一种方法从头部的3D模型和头部的2D轮廓重建或合成头部。 一个3D统计模型是从多个真人脑中产生的。 3D统计模型包括基矢量和对应系数形式的模型参数。 使用相机例如获取特定头部的多个2D轮廓。 将3D统计模型拟合到多个2D轮廓以确定对应于多个2D轮廓的模型参数的特定值。 然后，根据模型参数的特定值来渲染3D统计模型以重建特定的头部。
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47.发明授权Rendering discrete sample points projected to a screen space with a continuous resampling filter 失效使用连续重采样滤光片将投影到屏幕空间的离散采样点渲染公开(公告)号：US06744435B2
公开(公告)日：2004-06-01
申请号：US09842737
申请日：2001-04-26
IPC分类号： G06T1700
CPC分类号： G06T5/002 , G06T5/20 , G06T15/04 , G06T2200/12 , G06T2207/20192
摘要： A method produces an image from a set of discrete sample points. The sample points can define a 3D volume or surface. Each discrete sample point is projected to a screen space. A continuous resampling filter for each sample point is generated in screen space. The continuous resampling filter is a combination of a continuous reconstruction function and a continuous filter function for the sample point in screen space. The continuous resampling filter is then applied to each corresponding discrete sample in the screen space to generate a continuous sample for the image. The continuous samples can be rasterized to pixels using any known rasterization process or method.
摘要翻译： 一种方法从一组离散采样点产生图像。 采样点可以定义3D体积或曲面。 每个离散采样点被投影到屏幕空间。 在屏幕空间中生成每个采样点的连续重采样滤波器。 连续重采样滤波器是屏幕空间中采样点的连续重建功能和连续滤波器功能的组合。 然后将连续重采样滤波器应用于屏幕空间中的每个对应的离散样本，以生成图像的连续采样。 可以使用任何已知的光栅化过程或方法将连续样本光栅化为像素。
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公开(公告)号：US06509902B1
公开(公告)日：2003-01-21
申请号：US09514529
申请日：2000-02-28
IPC分类号： G06T1700
摘要： In a method for filtering shade attributes of surface points of a graphic object onto pixels in an image buffer according to depth values stored in a depth buffer, tangential disks are constructed at positions of each surface point. The tangential disks have increasingly larger radii. Each tangential disk is projected to an ellipse in texture space. View independent filter functions are applied at the position of each surface point to generate texture mipmaps for the surface point. The filter functions have an extent equal to the projected tangential disk. The surface point is projected to the pixels in the depth buffer, and a view dependent filter function is applied to each pixel in the image buffer to determine colors for the pixels.
摘要翻译： 在根据存储在深度缓冲器中的深度值将图形对象的表面点的遮蔽属性过滤到图像缓冲器中的像素的方法中，在每个表面点的位置处构造切向盘。 切向盘的半径越来越大。 每个切向盘在纹理空间中投影到一个椭圆。 在每个表面点的位置处应用视图独立滤波器函数，以生成表面点的纹理mipmap。 滤波器功能的范围等于投影切向盘。 表面点投影到深度缓冲器中的像素，并且视图相关滤波器函数被应用于图像缓冲器中的每个像素以确定像素的颜色。
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公开(公告)号：US06466227B1
公开(公告)日：2002-10-15
申请号：US09388337
申请日：1999-09-01
IPC分类号： G09G500
CPC分类号： G06T1/20
摘要： A programmable visualization apparatus processes graphical data. The apparatus includes a central processing unit for executing a visualization application and a scheduler. A third level of memory is connected to the central processing unit. The third level of memory stores the graphical data. The graphical data is partitioned into a plurality of blocks. A second level of memory is connected to the central processing unit by a system bus. The second level of memory stores a sub-set of the plurality of blocks. A first level of memory is connected to the second level of memory by a memory bus. The scheduler stores an ordered list of blocks in the first level memory. A processor element is connected to the first level of memory by a processor bus. A dispatcher is connected to the first, the second, and the third memories and the processor element. The dispatcher transfers blocks from the third, to the second, and from the second to the third level memories according to the order of the list of blocks.
摘要翻译： 可编程可视化装置处理图形数据。 该装置包括用于执行可视化应用程序和调度器的中央处理单元。 第三级存储器连接到中央处理器。 第三级存储器存储图形数据。 图形数据被分割成多个块。 第二级存储器通过系统总线连接到中央处理单元。 第二级存储器存储多个块的子集。 第一级存储器通过存储器总线连接到第二级存储器。 调度器将有序的块列表存储在第一级存储器中。 处理器元件通过处理器总线连接到第一级存储器。 调度器连接到第一，第二和第三存储器和处理器元件。 调度器根据块列表的顺序将块从第三层传送到第二层，从第二层到第三层的存储器。
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50.发明授权Method for interactively modeling graphical objects with linked and unlinked surface elements 失效使用链接和未链接的表面元素交互式建模图形对象的方法公开(公告)号：US06342886B1
公开(公告)日：2002-01-29
申请号：US09388339
申请日：1999-09-01
IPC分类号： G06T1700
摘要： A method generates a representation of a graphic object in a memory. A surface of the object is partitioned into a plurality of cells having a grid resolution related to an image plane resolution. A single zero-dimensional surface element is stored in the memory for each cell located on the surface of the object. A subset of the surface elements are selected as primary surface elements. The unselected surface elements are identified as secondary surface elements. Adjacent primary surface elements are connected by links. Primary attributes of the portion of the object contained in a particular cell are assigned to the associated primary surface element and the links of the associated primary surface element. The unselected surface elements are partitioned into groups, there being one group for each primary surface element, and secondary attributes of the portion of the object contained in a particular cell are assigned to the associated secondary surface elements.
摘要翻译： 一种方法在存储器中生成图形对象的表示。 对象的表面被划分成具有与图像平面分辨率相关的网格分辨率的多个单元格。 单个零维表面元素存储在位于对象表面上的每个单元的存储器中。 选择表面元素的子集作为主表面元素。 未选择的表面元件被识别为次表面元件。 相邻的主要表面元素通过链接连接。 包含在特定单元格中的对象的部分的主要属性被分配给相关联的主表面元素和相关联的主表面元素的链接。 未选择的表面元素被划分成组，对于每个主表面元素存在一个组，并且包含在特定单元中的对象的部分的次要属性被分配给相关联的次表面元素。
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