公开(公告)号：US12078599B2

公开(公告)日：2024-09-03

申请号：US17226697

申请日：2021-04-09

申请人： COGNEX CORPORATION

发明人： Hunmin Cho ,  Jonggyu Im ,  Jongkwan Park

IPC分类号： G01N21/88 ,  G06N3/08 ,  G06T7/00

CPC分类号： G01N21/8851 ,  G06N3/08 ,  G06T7/0004 ,  G01N2021/8887 ,  G06T2207/20081 ,  G06T2207/20084

摘要： Disclosed is a defect inspection device. The defect inspection device may include a lighting system designed for transmitting a lighting pattern having different illuminances for each area on a surface of an inspection object; a photographing unit for obtaining an image data of the inspection object; one or more processors for processing the image data; and a memory for storing a deep learning-based model. In addition, the one or more processors are adapted to control, the lighting system to transmit a lighting pattern having a different illuminance for each area on a surface of an inspection object, input, an image data obtained by the photographing unit into the deep learning-based model, wherein the image data includes a rapid change of illuminance in at least a part of the object surface; and determine, a defect on a surface of the inspection object using the deep learning-based model.

公开(公告)号：US20240184022A1

公开(公告)日：2024-06-06

申请号：US18497851

申请日：2023-10-30

申请人： Cognex Corporation

发明人： Thomas Ruhnau ,  Khaled Aljasem ,  Esther Oteo Lozano ,  John F. Filhaber

IPC分类号： G02B5/02 ,  G01N15/075 ,  G01N21/31 ,  G01N21/64 ,  G01N21/95 ,  G01N33/00 ,  G02B17/06

CPC分类号： G02B5/0215 ,  G01N15/075 ,  G01N21/31 ,  G01N21/6489 ,  G01N21/95 ,  G01N33/0027 ,  G02B17/0668

摘要： An optical system includes a light source operable to produce input light, a linear diffuser, and a reflector. The light source, linear diffuser, and reflector are arranged and configured to direct the input light from the light source to the linear diffuser, project diffused light from the linear diffuser to the reflector, reflect the diffused light from the reflector to the linear diffuser as reflected light, and modify the reflected light at the linear diffuser to output a planar fan of diffused light, so that an illumination line forms at an intersection of the planar fan and an object. A system includes an optical sub-system configured to generate a planar fan of diffused light by passing input light through a single linear diffuser twice, and a control sub-system configured to operate the optical sub-system to control use of the planar fan of diffused light.

公开(公告)号：US20240177260A1

公开(公告)日：2024-05-30

申请号：US18242192

申请日：2023-09-05

申请人： Cognex Corporation

发明人： Ben R. Carey ,  Andrew Parrett ,  Yukang Liu ,  Gilbert Chiang

IPC分类号： G06T1/00 ,  G06T7/00 ,  G06T7/246 ,  G06T7/292 ,  G06T7/80 ,  G06V20/64

CPC分类号： G06T1/0014 ,  G06T7/0004 ,  G06T7/251 ,  G06T7/292 ,  G06T7/85 ,  G06V20/64 ,  G06V2201/12

摘要： This invention provides a system and method for using an area scan sensor of a vision system, in conjunction with an encoder or other knowledge of motion, to capture an accurate measurement of an object larger than a single field of view (FOV) of the sensor. It identifies features/edges of the object, which are tracked from image to image, thereby providing a lightweight way to process the overall extents of the object for dimensioning purposes. Logic automatically determines if the object is longer than the FOV, and thereby causes a sequence of image acquisition snapshots to occur while the moving/conveyed object remains within the FOV until the object is no longer present in the FOV. At that point, acquisition ceases and the individual images are combined as segments in an overall image. These images can be processed to derive overall dimensions of the object based on input application details.

公开(公告)号：US11966996B2

公开(公告)日：2024-04-23

申请号：US17173032

申请日：2021-02-10

申请人： Cognex Corporation

发明人： Gang Liu ,  Ben R. Carey ,  Nickolas J. Mullan ,  Caleb Spear ,  Andrew Parrett

IPC分类号： G06T7/507 ,  G06T1/00 ,  G06T7/00 ,  G06T7/521 ,  G06T7/80 ,  G06V20/64

CPC分类号： G06T1/0014 ,  G06T7/0004 ,  G06T7/507 ,  G06T7/521 ,  G06T7/85 ,  G06V20/64 ,  G06T2207/10028 ,  G06V2201/12

摘要： This invention provides a system and method that performs 3D imaging of a complex object, where image data is likely lost. Available 3D image data, in combination with an absence/loss of image data, allows computation of x, y and z dimensions. Absence/loss of data is assumed to be just another type of image data, and represents the presence of something that has prevented accurate data from being generated in the subject image. Segments of data can be connected to areas of absent data and generate a maximum bounding box. The shadow that this object generates can be represented as negative or missing data, but is not representative of the physical object. The height from the positive data, the object shadow size based on that height, the location in the FOV, and the ray angles that generate the images, are estimated and the object shadow size is removed from the result.

公开(公告)号：US11966810B2

公开(公告)日：2024-04-23

申请号：US16669603

申请日：2019-10-31

申请人： Cognex Corporation

发明人： Laurens Nunnink ,  Bennet Heidekorn ,  Jens Ruetten ,  Martijn Lambertus Peter Visser ,  Carl W. Gerst, III ,  William Equitz ,  Matthew D. Engle

IPC分类号： G06K7/10 ,  G02B17/02 ,  G02B17/06 ,  G02B26/10 ,  G02B26/12 ,  G02B27/10 ,  G02B27/14 ,  G06V10/141 ,  G06V10/147 ,  G06V30/224 ,  H04N23/00 ,  G03B17/56

CPC分类号： G06K7/10732 ,  G02B17/023 ,  G02B17/06 ,  G02B26/105 ,  G02B26/12 ,  G02B27/1066 ,  G02B27/14 ,  G02B27/143 ,  G06K7/10603 ,  G06K7/10722 ,  G06V10/141 ,  G06V10/147 ,  G06V30/2247 ,  H04N23/00 ,  G03B17/565

摘要： This invention provides a system for separating a field of view (FOV) of a scene imaged by a vision system camera assembly, in which a separating mirror assembly redirects a first optical path of at least a first optics with respect to at least a first image sensor in the camera assembly. A first reflecting assembly redirects the first optical path from the separating mirror toward a first FOV. The first optical path is extended free of splitting the image. The separating mirror assembly redirects a second optical path of a second optics with respect to a second image sensor in the camera assembly. A second reflecting assembly redirects the second optical path from the separating mirror toward a second FOV. The second optical path is extended free of splitting the image projected from the scene on the second image sensor.

公开(公告)号：US11954767B2

公开(公告)日：2024-04-09

申请号：US18099544

申请日：2023-01-20

申请人： Cognex Corporation

发明人： Martin Schaffer ,  Marcus Große

IPC分类号： G06T11/00 ,  H04N5/72 ,  H04N13/00 ,  H04N13/243 ,  H04N13/296

CPC分类号： G06T11/003 ,  H04N5/72 ,  H04N13/243 ,  H04N13/296 ,  H04N2013/0074

摘要： Methods, systems, and computer readable media for generating a three-dimensional reconstruction of an object with reduced distortion are described. In some aspects, a system includes at least two image sensors, at least two projectors, and a processor. Each image sensor is configured to capture one or more images of an object. Each projector is configured to illuminate the object with an associated optical pattern and from a different perspective. The processor is configured to perform the acts of receiving, from each image sensor, for each projector, images of the object illuminated with the associated optical pattern and generating, from the received images, a three-dimensional reconstruction of the object. The three-dimensional reconstruction has reduced distortion due to the received images of the object being generated when each projector illuminates the object with an associated optical pattern from the different perspective.

公开(公告)号：USD1012155S1

公开(公告)日：2024-01-23

申请号：US29773796

申请日：2021-03-11

申请人： COGNEX CORPORATION

设计人： Laszlo Orban ,  Pablo Garcia Campos ,  Christoph Könnecke ,  Roman Schnabler ,  Lars Mayer

摘要： This patent contains a drawing executed in color. Copies of this patent with the color drawing will be provided by the Office upon request and payment of the necessary fee.
FIGURE is a top plan view of an ornamental design for an imaging device with a housing.
The ornamental design that is claimed is shown in solid lines in the drawing. The broken lines in the drawing show portions of an imaging device with a housing that form no part of the claimed design. The dash-dash broken lines in the drawing are included for environmental purposes only and form no part of the claimed design. The dash-dot broken lines in the drawing are included to define boundaries of the claim only and form no part of the claimed design.

公开(公告)号：US11881000B2

公开(公告)日：2024-01-23

申请号：US17208990

申请日：2021-03-22

申请人： Cognex Corporation

发明人： Andrew Hoelscher ,  Simon Barker ,  Adam Wagman ,  David J. Michael

IPC分类号： G06T7/73 ,  H04N13/275 ,  G06T17/10 ,  G06T7/33 ,  G06V30/24 ,  G06F18/22 ,  G06V10/77 ,  G06V10/44 ,  G06V20/64

CPC分类号： G06T7/75 ,  G06F18/22 ,  G06T7/344 ,  G06T17/10 ,  G06V10/44 ,  G06V10/7715 ,  G06V20/653 ,  G06V30/2504 ,  H04N13/275 ,  G06T2207/10012

摘要： This invention applies dynamic weighting between a point-to-plane and point-to-edge metric on a per-edge basis in an acquired image using a vision system. This allows an applied ICP technique to be significantly more robust to a variety of object geometries and/or occlusions. A system and method herein provides an energy function that is minimized to generate candidate 3D poses for use in alignment of runtime 3D image data of an object with model 3D image data. Since normals are much more accurate than edges, the use of normal is desirable when possible. However, in some use cases, such as a plane, edges provide information in relative directions the normals do not. Hence the system and method defines a “normal information matrix”, which represents the directions in which sufficient information is present. Performing (e.g.) a principal component analysis (PCA) on this matrix provides a basis for the available information.

公开(公告)号：US11875219B2

公开(公告)日：2024-01-16

申请号：US17567832

申请日：2022-01-03

申请人： Cognex Corporation

发明人： Ivan A. Bachelder ,  Chen Gao ,  Francisco Azcona Guerrero ,  Jose Fernandez Dorado ,  Esther Oteo Lozano ,  Andreas Weber

IPC分类号： G06K7/14 ,  G06K7/10 ,  H04N23/959 ,  H04N23/67

CPC分类号： G06K7/1443 ,  G06K7/10722 ,  G06K7/1413 ,  H04N23/959 ,  H04N23/671

摘要： This invention provides a system and method for detecting and acquiring one or more in-focus images of one or more barcodes within the field of view of an imaging device. A measurement process measures depth-of-field of barcode detection. A plurality of nominal coarse focus settings of a variable lens allow sampling, in steps, of a lens adjustment range corresponding to allowable distances between the one or more barcodes and the image sensor, so that a step size of the sampling is less than a fraction of the depth-of-field of barcode detection. An acquisition process acquires a nominal coarse focus image for each nominal coarse focus setting. A barcode detection process detects one or more barcode-like regions and respective likelihoods. A fine focus process fine-adjusts, for each high-likelihood barcode, the variable lens near a location of the barcode-like regions. The process acquires an image for decoding using the fine adjusted setting.

公开(公告)号：US20240005148A1

公开(公告)日：2024-01-04

申请号：US18103432

申请日：2023-01-30

申请人： Cognex Corporation

发明人： Lei Wang ,  Vivek Anand ,  Lowell D. Jacobson ,  David Y. Li

IPC分类号： G06N3/08 ,  G06V10/50 ,  G06F18/214 ,  G06V10/82 ,  G06V10/44

CPC分类号： G06N3/08 ,  G06V10/50 ,  G06F18/2148 ,  G06V10/7553 ,  G06V10/454 ,  G06V10/44 ,  G06V10/82

摘要： This invention provides a system and method for finding patterns in images that incorporates neural net classifiers. A pattern finding tool is coupled with a classifier that can be run before or after the tool to have labeled pattern results with sub-pixel accuracy. In the case of a pattern finding tool that can detect multiple templates, its performance is improved when a neural net classifier informs the pattern finding tool to work only on a subset of the originally trained templates. Similarly, in the case of a pattern finding tool that initially detects a pattern, a neural network classifier can then determine whether it has found the correct pattern. The neural network can also reconstruct/clean-up an imaged shape, and/or to eliminate pixels less relevant to the shape of interest, therefore reducing the search time, as well significantly increasing the chance of lock on the correct shapes.