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公开(公告)号：US09995573B2
公开(公告)日：2018-06-12
申请号：US14603969
申请日：2015-01-23
Applicant: Cognex Corporation
Inventor： Simon Barker , David J. Michael , William M. Silver
CPC classification number: G01B21/00 , G06K9/3241 , G06K9/6211 , G06K9/685 , G06T7/73 , G06T2207/10004
Abstract: The present application discloses a probe placement module for placing probes on a virtual object depicted in an image. The probe placement module is configured to place probes on interest points of an image so that the probes can accurately represent a pattern depicted in the image. The probe placement module can be configured to place the probes so that the probes can extract balanced information on all degrees of freedom associated with the pattern's movement, which improves the accuracy of the model generated from the probes.
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公开(公告)号：US09946947B2
公开(公告)日：2018-04-17
申请号：US13797910
申请日：2013-03-12
Applicant: Cognex Corporation
Inventor： Earle B. Stokes , Fenghua Jin , William M. Silver , Xiangyun Ye , Ivan A. Bachelder
CPC classification number: G06K9/2063 , G06K7/10861 , G06K7/10871 , G06K7/1417 , G06K7/1443 , G06K9/4604 , G06K9/4609 , G06K9/4623 , G06T7/60
Abstract: This invention provides a system and method for finding features in images that exhibit saddle point-like structures using relatively computationally low-intensive processes, illustratively consisting of an anti-correlation process, and associated anti-correlation kernel, which operates upon a plurality of pixel neighborhoods within the image. This process enables an entire image to be quickly analyzed for any features that exhibit such saddle point-like structures by determining whether the anti-correlation kernel generates a weak or strong response in various positions within the image. The anti-correlation kernel is designed to generate a strong response regardless of the orientation of a saddle point-like structure. The anti-correlation process examines a plurality of pixel neighborhoods in the image, thereby locating any saddle point-like structures regardless of orientation, as it is angle-independent. The structures are then grouped and refined (for example in a grid) in an effort to locate and decode ID topologies within the image.
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Patent Agency Ranking
公开(公告)号：US09589199B2
公开(公告)日：2017-03-07
申请号：US14837115
申请日：2015-08-27
Applicant: COGNEX CORPORATION
Inventor： William M. Silver , Ivan Bachelder
CPC classification number: G06K9/18 , G06K7/00 , G06K7/10 , G06K7/10722 , G06K7/1413 , G06K7/1456 , G06K7/146 , G06K7/1478 , G06K9/00503 , G06K9/00973 , G06K9/46 , G06K9/50 , G06K9/62
Abstract: Methods and apparatus are disclosed for extracting a one-dimensional digital signal from a two-dimensional digital image along a projection line. In some embodiments a repeating sequence of pixel weight templates, and a sequence of relative positions, are selected in response to the orientation of a projection line and used to compute a sequence of weighted sums. The sequence can be selected to achieve desirable properties, for example photometric accuracy, geometric accuracy, resolution, and/or noise reduction. In some embodiments registers and multiply-accumulators are arranged and controlled so as to compute the 1D signal.
Abstract translation: 公开了用于从投影线从二维数字图像提取一维数字信号的方法和装置。 在一些实施例中，响应于投影线的取向选择像素权重模板的重复序列和相对位置的序列，并用于计算加权和的序列。 可以选择该顺序以获得期望的性质，例如光度精度，几何精度，分辨率和/或降噪。 在一些实施例中，布置和控制寄存器和乘法累加器以便计算1D信号。
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公开(公告)号：US20240370962A1
公开(公告)日：2024-11-07
申请号：US18655026
申请日：2024-05-03
Applicant: Cognex Corporation
Inventor： William M. Silver , Da Teng
Abstract: Methods and systems for extracting a one-dimensional (1D) signal from a two-dimensional (2D) digital image along a projection line are provided herein. The methods and systems store the digital image in a memory hierarchy wherein non-blocking prefetch operations can fetch pixels from a main store to a data cache. A prefetch plan, pixel processing plan, and prefetch distance are selected responsive to the orientation of the projection line. The prefetch plan uses a first memory address order that is designed to be favorable for efficiently fetching pixels from the main store to the data cache for the given orientation. The pixel processing plan uses a second address order that is designed to be favorable for computing a 1D signal along the projection line. The pixel processing plan is used in coordination with the prefetch plan to compute the one-dimensional signal, so that pixels are fetched from the main store to the data cache in advance of being used by the pixel operations by an amount of time that is responsive to the prefetch distance.
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5.发明申请SYSTEM AND METHOD FOR FINDING SADDLE POINT-LIKE STRUCTURES IN AN IMAGE AND DETERMINING INFORMATION FROM THE SAME 有权用于在图像中发现类似点状结构的系统和方法以及从其确定信息公开(公告)号：US20140119665A1
公开(公告)日：2014-05-01
申请号：US13797910
申请日：2013-03-12
Applicant: COGNEX CORPORATION
Inventor： Earle B. Stokes , Fenghua Jin , William M. Silver , Xiangyun Ye , Ivan A. Bachelder
IPC: G06T7/00
CPC classification number: G06K9/2063 , G06K7/10861 , G06K7/10871 , G06K7/1417 , G06K7/1443 , G06K9/4604 , G06K9/4609 , G06K9/4623 , G06T7/60
Abstract: This invention provides a system and method for finding features in images that exhibit saddle point-like structures using relatively computationally low-intensive processes, illustratively consisting of an anti-correlation process, and associated anti-correlation kernel, which operates upon a plurality of pixel neighborhoods within the image. This process enables an entire image to be quickly analyzed for any features that exhibit such saddle point-like structures by determining whether the anti-correlation kernel generates a weak or strong response in various positions within the image. The anti-correlation kernel is designed to generate a strong response regardless of the orientation of a saddle point-like structure. The anti-correlation process examines a plurality of pixel neighborhoods in the image, thereby locating any saddle point-like structures regardless of orientation, as it is angle-independent. The structures are then grouped and refined (for example in a grid) in an effort to locate and decode ID topologies within the image.
Abstract translation: 本发明提供一种用于在图像中发现特征的系统和方法，该特征使用相对计算上的低密集过程表现出鞍点状结构，其示意性地由抗相关过程和相关联的反相关核组成，该相关反相内核基于多个像素 图像内的社区。 该过程使得能够通过确定反相关内核是否在图像内的各个位置中产生弱或强响应来呈现出诸如鞍点状结构的任何特征，从而快速分析整个图像。 反相关核被设计成产生强烈的响应，而不管鞍点状结构的取向如何。 反相关处理检查图像中的多个像素邻域，从而定位任何鞍状结构，而不管方位如何，因为它是与角度无关的。 然后将结构分组和精化（例如，在网格中），以努力定位和解码图像内的ID拓扑。
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公开(公告)号：US20130321657A1
公开(公告)日：2013-12-05
申请号：US13844947
申请日：2013-03-16
Applicant: Cognex Corporation
Inventor： E. John McGarry , William M. Silver
IPC: H04N5/232
CPC classification number: H04N5/2327 , G06T5/003 , G06T2207/20201 , H04N5/232 , H04N5/349 , H04N5/37452
Abstract: A system and method captures a moving image of a scene that can be more readily de-blurred as compared to images captured through other methods operating on equivalent exposure-time intervals. Rather than stopping and starting the light measurement during the exposure-time interval, photo-generated current is switched between multiple charge storage sites in accordance with a temporal switching pattern that optimizes the conditioning of the solution to the inverse blur transform. By switching the image intensity signal between storage sites all of the light energy available during the exposure-time interval is transduced to electronic charge and captured to form a temporally decomposed representation of the moving image. As compared to related methods that discard approximately half of the image intensity signal available over an equivalent exposure-time interval, such a temporally decomposed image is a far more complete representation of the moving image and more effectively de-blurred using simple linear de-convolution techniques.
Abstract translation: 与通过在等效的曝光时间间隔上操作的其他方法捕获的图像相比，系统和方法捕获可以更容易地去模糊的场景的运动图像。 不是在曝光时间间隔期间停止和启动光测量，而是根据将解的调理优化到逆模糊变换的时间切换模式在多个电荷存储位置之间切换光电流。 通过在存储位置之间切换图像强度信号，在曝光时间间隔期间可用的所有光能被转换成电荷并被捕获以形成运动图像的时间分解表示。 与在相当的曝光时间间隔上丢弃大约一半可用图像强度信号的相关方法相比，这种时间分解的图像是运动图像的更完整的表示，并且使用简单的线性去卷积更有效地去模糊 技术
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公开(公告)号：US08743220B2
公开(公告)日：2014-06-03
申请号：US13844947
申请日：2013-03-16
Applicant: Cognex Corporation
Inventor： E. John McGarry , William M. Silver
CPC classification number: H04N5/2327 , G06T5/003 , G06T2207/20201 , H04N5/232 , H04N5/349 , H04N5/37452
Abstract: A system and method captures a moving image of a scene that can be more readily de-blurred as compared to images captured through other methods operating on equivalent exposure-time intervals. Rather than stopping and starting the light measurement during the exposure-time interval, photo-generated current is switched between multiple charge storage sites in accordance with a temporal switching pattern that optimizes the conditioning of the solution to the inverse blur transform. By switching the image intensity signal between storage sites all of the light energy available during the exposure-time interval is transduced to electronic charge and captured to form a temporally decomposed representation of the moving image. As compared to related methods that discard approximately half of the image intensity signal available over an equivalent exposure-time interval, such a temporally decomposed image is a far more complete representation of the moving image and more effectively de-blurred using simple linear de-convolution techniques.
Abstract translation: 与通过在等效的曝光时间间隔上操作的其他方法捕获的图像相比，系统和方法捕获可以更容易地去模糊的场景的运动图像。 不是在曝光时间间隔期间停止和启动光测量，而是根据将解的调理优化到逆模糊变换的时间切换模式在多个电荷存储位置之间切换光电流。 通过在存储位置之间切换图像强度信号，在曝光时间间隔期间可用的所有光能被转换成电荷并被捕获以形成运动图像的时间分解表示。 与在相当的曝光时间间隔上丢弃大约一半可用图像强度信号的相关方法相比，这种时间分解的图像是运动图像的更完整的表示，并且使用简单的线性去卷积更有效地去模糊 技术
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