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公开(公告)号：US07298372B2
公开(公告)日：2007-11-20
申请号：US10961810
申请日：2004-10-08
申请人： Hanspeter Pfister , Matthias B. Zwicker , Wei Chen , Liu Ren
发明人： Hanspeter Pfister , Matthias B. Zwicker , Wei Chen , Liu Ren
IPC分类号： G06T17/00
CPC分类号： G06T15/08
摘要： A method renders a volume data set including a plurality of voxels. A sampling rate for each voxel in a volume data set is determined. Each voxel is filtered according to the sampling rate and pixels for an output image are generated from the filtered voxels.
摘要翻译： 一种方法呈现包括多个体素的体数据集。 确定体数据集中的每个体素的采样率。 根据采样率对每个体素进行滤波，并从滤波体素生成输出图像的像素。
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公开(公告)号：US07215340B2
公开(公告)日：2007-05-08
申请号：US10199141
申请日：2002-07-19
申请人： Hanspeter Pfister , Liu Ren , Matthias B. Zwicker
发明人： Hanspeter Pfister , Liu Ren , Matthias B. Zwicker
摘要： A method renders a 3D model of a graphics object wherein the model includes discrete zero-dimensional points. A first opaque polygon is centered on each point, and the polygon is rendered to obtain depth values of a depth image in a z-buffer. A second polygon is centered on each point. The second polygons are adapted to associated object space EWA resampling filters, and the adapted second polygons are rendered as an image according to the depth values in the depth image.
摘要翻译： 一种方法呈现图形对象的3D模型，其中模型包括离散的零维点。 第一个不透明多边形以每个点为中心，并且渲染多边形以获得z缓冲区中深度图像的深度值。 第二个多边形以每个点为中心。 第二多边形适用于相关对象空间EWA重采样滤波器，并且适配的第二多边形根据深度图像中的深度值被渲染为图像。
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3.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：US06639597B1
公开(公告)日：2003-10-28
申请号：US09514545
申请日：2000-02-28
IPC分类号： G06T1520
CPC分类号： G06T15/405
摘要： In a method for projecting surface points of a graphic object onto pixels in a depth buffer to determine depth values of the pixels, each surface point is projected onto a corresponding pixels. A depth value of each projected surface point is stored in the pixel only if the depth value of the projected surface point is less than the depth value of the pixel. A tangential disk is constructed at a position of the surface point, the tangential disk has a radius larger than a maximum distance between the surface points. The tangential disk is projected onto a corresponding subset of the pixels. Depth values of the projected tangential disk are stored in the corresponding subsets of pixels only if the depth values of the projected tangential disk are less than the depth values of the corresponding subsets of pixels.
摘要翻译： 在用于将图形对象的表面点投影到深度缓冲器中的像素以确定像素的深度值的方法中，每个表面点被投影到相应的像素上。 如果投影面点的深度值小于像素的深度值，则每个投影面点的深度值被存储在像素中。 切向盘构造在表面点的位置处，切向盘的半径大于表面点之间的最大距离。 切线盘被投影到相应的像素子集上。 仅当投影切向盘的深度值小于相应的像素子集的深度值时，才将投影切线盘的深度值存储在相应的像素子集中。
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公开(公告)号：US06583787B1
公开(公告)日：2003-06-24
申请号：US09514546
申请日：2000-02-28
IPC分类号： G06T1120
CPC分类号： G06T15/005
摘要： A rendering system pipeline includes a memory storing shape and shade attributes of a surface of the object. The attributes are arranged as an octree in the memory. The octree includes a plurality of nodes arranged at a plurality of levels, each node storing a plurality of zero-dimensional n-tuples, each n-tuple locally approximating the shape and shade attributes of a portion of the surface of the graphic object, and the n-tuples having a sampling resolution of an image space. A plurality of parallel processing pipelines are connected the memory. The pipelines project the shape and shade attributes of the octree to an image plane having a selected orientation by traversing the n-tuples of the nodes of the octree from a lowest resolution level to a highest resolution level.
摘要翻译： 渲染系统管线包括存储对象表面的形状和阴影属性的存储器。 这些属性在内存中被排列成八叉树。 八叉树包括以多个级别排列的多个节点，每个节点存储多个零维n元组，每个n元组局部近似图形对象表面的一部分的形状和阴影属性，以及 n元组具有图像空间的采样分辨率。 多个并行处理管线连接存储器。 管线通过遍历八叉树节点的n元组从最低分辨率级别到最高分辨率级别，将八叉树的形状和阴影属性投影到具有所选取向的图像平面。
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公开(公告)号：US06580425B1
公开(公告)日：2003-06-17
申请号：US09514543
申请日：2000-02-28
IPC分类号： G06T1700
CPC分类号： G06T15/205 , G06T15/04 , G06T17/005
摘要： In a method for representing a graphic object, rays are cast through the object. The rays originate at orthogonal planes surrounding the object. The surface of the object is sampled for shape and shade attributes at points where the rays intersect the surface. The sampled shape and shade attributes of each sampled point are stored in an octree stored in the memory.
摘要翻译： 在用于表示图形对象的方法中，通过对象投射光线。 光线起源于物体周围的正交平面。 在光线与表面相交的点处，对象的表面进行采样以获取形状和阴影属性。 每个采样点的采样形状和阴影属性被存储在存储器中的八叉树中。
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