公开(公告)号：US06615158B2

公开(公告)日：2003-09-02

申请号：US09891566

申请日：2001-06-25

Applicant: Lothar Wenzel ,  Dinesh Nair ,  Ram Rajagopal

Inventor： Lothar Wenzel ,  Dinesh Nair ,  Ram Rajagopal

IPC: G06F300

CPC classification number: G06K9/28 ,  G06F17/18 ,  G06T7/0004 ,  G06T2200/04 ,  G06T2207/10028 ,  G06T2207/30164

Abstract: A system and method for analyzing a surface. The system includes a computer including a CPU and a memory medium operable to store programs executable by the CPU to perform the method. The method may include: 1) receiving data describing an n-dimensional surface defined in a bounded n-dimensional space, where the surface is embedded in an m-dimensional real space via embedding function x( ), and where m>n; 2) determining a diffeomorphism f of the n-dimensional space; 3) computing the inverse transform f−1 of the diffeomorphism f; 4) selecting points, e.g., a Low Discrepancy Sequence, in the n-dimensional space; 5) mapping the points onto the surface using x(f−1), thereby generating mapped points on the surface; 6) sampling the surface using at least a subset of the mapped points to generate samples of the surface; and 7) analyzing the samples of the surface to determine characteristics of the surface.

Abstract translation: 用于分析表面的系统和方法。 该系统包括一个计算机，它包括一个CPU和一个可操作的存储介质，用于存储由CPU执行的程序来执行该方法。 该方法可以包括：1）接收描述在有限的n维空间中定义的n维表面的数据，其中通过嵌入函数x（）将表面嵌入在m维实际空间中，并且其中m> n; 2）确定n维空间的不同形态f; 3）计算不同形式f的逆变换f-1; 4）在n维空间中选择点，例如低差异序列; 5）使用x（f-1）将点映射到表面上，从而在表面上生成映射点; 6）使用映射点的至少一个子集对表面进行采样，以生成表面样本; 和7）分析表面的样品以确定表面的特征。

公开(公告)号：US06229921B1

公开(公告)日：2001-05-08

申请号：US09227508

申请日：1999-01-06

Applicant: Lothar Wenzel ,  Dinesh Nair ,  Nicolas Vazquez ,  Samson DeKey

Inventor： Lothar Wenzel ,  Dinesh Nair ,  Nicolas Vazquez ,  Samson DeKey

IPC: G06K962

CPC classification number: G06K9/6203 ,  G06K2209/19 ,  G06T7/223 ,  G06T7/248 ,  G06T7/74 ,  G06T2207/10016 ,  G06T2207/30108

Abstract: A system and method for performing pattern matching to locate zero or more instances of a template image in a target image. The method first comprises sampling the template image using a Low Discrepancy sequence, also referred to as a quasi-random sequence, to determine a plurality of sample pixels in the template image which accurately characterize the template image. The Low Discrepancy sequence is designed to produce sample points which maximally avoid each other. After the template image is sampled or characterized, the method then performs pattern matching using the sample pixels and the target image to determine zero or more locations of the template image in the target image. The method may also perform a local stability analysis around at least a subset of the sample pixels to determine a lesser third number of sample pixels which have a desired degree of stability, and then perform pattern matching using the third plurality of sample pixels. In one embodiment, the local stability analysis determines a plurality of sets of sample pixels with differing stability neighborhood sizes, and the pattern matching performs a plurality of iterations of pattern matching using different sets of sample pixels, preferably performed in a coarse to fine manner, e.g., using sets of sample pixels with successively smaller stability neighborhood sizes and/or step sizes. The present invention also includes performing rotation invariant pattern matching by sampling the template image along one or more rotationally invariant paths, preferably circular perimeters, to produce one or more sets of sample pixels. These sample pixels from the circular paths are then used in the pattern matching. The rotationally invariant pattern matching may also use local stability analysis and coarse to fine searching techniques.

Abstract translation: 一种用于执行模式匹配以在目标图像中定位模板图像的零个或多个实例的系统和方法。 该方法首先包括使用低差异序列（也称为准随机序列）对模板图像进行采样，以确定模板图像中准确表征模板图像的多个样本像素。 低差异序列被设计为产生最大程度地避免彼此的采样点。 在模板图像被采样或表征之后，该方法然后使用样本像素和目标图像执行模式匹配，以确定目标图像中模板图像的零个或多个位置。 该方法还可以围绕样本像素的至少一个子集执行局部稳定性分析，以确定具有期望程度的稳定性的较小的第三数量的采样像素，然后使用第三多个采样像素执行模式匹配。 在一个实施例中，本地稳定性分析确定具有不同稳定性邻域大小的多组样本像素，并且模式匹配使用不同的采样像素集合执行多次迭代的模式匹配，优选地以粗略到精细的方式执行， 例如，使用具有连续更小的稳定性邻域大小和/或步长的样本像素集合。 本发明还包括通过沿着一个或多个旋转不变路径（优选圆周周长）采样模板图像来执行旋转不变模式匹配，以产生一组或多组采样像素。 来自圆形路径的这些采样像素然后用于模式匹配。 旋转不变模式匹配还可以使用局部稳定性分析和粗略到精细搜索技术。

公开(公告)号：US5879551A

公开(公告)日：1999-03-09

申请号：US687376

申请日：1996-07-02

Applicant: Ulrich Kolmar ,  Harald Matern ,  Lothar Wenzel

Inventor： Ulrich Kolmar ,  Harald Matern ,  Lothar Wenzel

IPC: B01D33/04 ,  C02F11/12 ,  B01D33/056

CPC classification number: B01D33/042

Abstract: A device for dewatering suspensions such as sludge or similar dewaterable goods contains several rollers and filtering webs that follow a sinuous path around the rollers. The width of at least one pressure gap, as well as the force which is applied on the goods to be filtered in this pressure gap, may be adjusted by sliding or swivelling so that the ratio between linear pressure and surface pressure can be adapted to the properties of the goods to be dewatered. By influencing this ratio it is possible from a standard model to cover a wide range of applications by simple and economic means, so that the cost-effectiveness ratio is improved.

Abstract translation: PCT No.PCT / DE94 / 01437 371日期：1996年7月2日 102（e）日期1996年7月2日PCT 1994年11月29日PCT PCT。 公开号WO95 / 15925 日期1995年6月15日一种用于脱水悬浮液（如污泥或类似的可脱水物品）的装置包含若干辊和过滤网，其沿着绕辊的弯曲路径。 可以通过滑动或旋转来调节至少一个压力间隙的宽度以及施加在要在该压力间隙中过滤的货物上的力，使得线性压力和表面压力之间的比率可以适应于 要脱水的物品属性。 通过影响该比例，可以通过简单经济手段从标准模式覆盖广泛的应用，从而提高成本效益比。