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Cognex Corporation patents


Recent patent applications related to Cognex Corporation. Cognex Corporation is listed as an Agent/Assignee. Note: Cognex Corporation may have other listings under different names/spellings. We're not affiliated with Cognex Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "C" | Cognex Corporation-related inventors


System and method for scoring color candidate poses against a color image in a vision system

This invention provides a system and method for scoring a candidate pose in a geometric-pattern matching tool of a vision system by using trained color, grayscale and/or range (height) information (“color/grayscale/range”) in association with edge-aligned candidate poses. A trained pattern includes associated color/grayscale/range information in a set of test points. ... Cognex Corporation

System and method for reading patterns using multiple image frames

This invention provides a system and method for decoding symbology that contains a respective data set using multiple image frames of the symbol, wherein at least some of those frames can have differing image parameters (for example orientation, lens zoom, aperture, etc.) so that combining the frames with an illustrative multiple image application allows the most-readable portions of each frame to be stitched together. And unlike prior systems which may select one “best” image, the illustrative system method allows this stitched image to form a complete, readable image of the underlying symbol. ... Cognex Corporation

System and method for reduced-speckle laser line generation

A coherent beam moves across a stationary line generator, allowing the speckle pattern projected through the diffuser onto the surface—for example using a mems mirror, or another arrangement that is free of a moving mass, such as solid state beam deflector (e.g. An aom). ... Cognex Corporation

Method and apparatus for ordering code candidates in image for decoding attempts

A method and apparatus for decoding codes applied to objects for use with a camera and a conveyor system wherein the camera includes an image sensor having a two dimensional field of view (fov) and the conveyor system moves objects through the fov such that objects enter the fov along an entry edge and exit the fov along an exit edge, the method comprising the steps of providing a processor programmed to perform the steps of obtaining images of the fov, for each image identifying code candidates in at least portions of the image, ordering at least a subset of the code candidates for decoding in a candidate order wherein the candidate order is determined at least in part as a function of the first direction of travel through the fov, attempting to decode code candidates in the order specified by the direction of travel and when a new image event occurs, foregoing attempts to decode at least a portion of the identified code candidates.. . ... Cognex Corporation

Systems and methods for tracking optical codes

Computerized methods and systems for locating barcodes applied to objects are provided. A method can receive a first image of a first barcode fragment applied to a first object captured at a first time and identify a first position of the first barcode fragment. ... Cognex Corporation

Autonomous soil sampler

An autonomous soil sampling device. The device including a vehicle for generally autonomously navigating a given area for sampling and adapted with systems to generally avoid obstacles during maneuvering. ... Cognex Corporation

System and method for automatic selection of 3d alignment algorithms in a vision system

A system and method for selecting among 3d alignment algorithms in a 3d vision system is provided. The system and method includes a 3d camera assembly to acquire at least a runtime image defined by a 3d point cloud or runtime 3d range image having features of a runtime object and a vision system processor. ... Cognex Corporation

System and method for improved scoring of 3d poses and spurious point removal in 3d image data

This invention provides a system and method for estimating match of a 3d alignment pose of a runtime 3d point cloud relative to a trained model 3d point cloud. It includes scoring a match of a candidate pose of the runtime 3d point cloud relative to the trained model 3d point cloud, including a visibility check that comprises (a) receiving a 3d camera optical center (b) receiving the trained model 3d point cloud; (c) receiving the runtime 3d point cloud; and (d) constructing a plurality of line segments from the optical center to a plurality of 3d points in the 3d point cloud at the runtime candidate pose. ... Cognex Corporation

Mark reader with reduced trigger-to-decode response time

Systems and methods for use with a handheld mark reader that reduce the time between activation of the reader's trigger and the reader returning a successful decode response. At least one pre-trigger image can be acquired and at least one pre-trigger image parameter determined. ... Cognex Corporation

Machine vision system for forming a one dimensional digital representation of a low information content scene

Methods, performed by a machine vision system, for forming a one dimensional digital representation of a low information content scene, e.g., a scene that is sparsely illuminated by an illumination plane, and the one dimensional digital representation is a projection formed with respect to columns of a rectangular pixel array of the machine vision system.. . ... Cognex Corporation

Simultaneous kinematic and hand-eye calibration

Described are machine vision systems and methods for simultaneous kinematic and hand-eye calibration. A machine vision system includes a robot or motion stage and a camera in communication with a control system. ... Cognex Corporation

System and method for configuring an id reader using a mobile device

A system and method for communicating at least one of updated configuration information and hardware setup recommendations to a user of an id decoding vision system is provided. An image of an object containing one or more ids is acquired with a mobile device. ... Cognex Corporation

Optical imaging devices and methods

The present invention relates to optical imaging devices and methods for reading optical codes. The image device comprises a sensor, a lens, a plurality of illumination devices, and a plurality of reflective surfaces. ... Cognex Corporation

Image module including mounting and decoder for mobile devices

This invention provides a module for a handheld device. The module includes an imager with optics and image acquisition/processing processors that provide high speed acquisition and handling of acquired image data. ... Cognex Corporation

02/22/18 / #20180052815

Apparatuses, systems, and methods for providing a visual program for machine vision systems

Techniques include systems, computerized methods, and computer readable media for creating a graphical program in a graphical program development environment. A spreadsheet node having an input terminal in the graphical program is instantiated. ... Cognex Corporation

02/15/18 / #20180046885

Selection of balanced-probe sites for 3-d alignment algorithms

Techniques include systems, computerized methods, and computer readable media for choosing placement of three-dimensional (3d) probes used for evaluating a 3d alignment pose of a runtime 3d image inside a 3d alignment system for estimating the pose of a trained 3d model image in that 3d runtime image. A plurality of features associated with a first plurality of points of interest from a 3d image are generated, wherein each feature includes data indicative of 3d properties of an associated point from the plurality of points of interest. ... Cognex Corporation

02/15/18 / #20180045503

Multiple channel locating

Methods, systems, and apparatuses are provided for estimating a location on an object in a three-dimensional scene. Multiple radiation patterns are produced by spatially modulating each of multiple first radiations with a distinct combination of one or more modulating structures, each first radiation having at least one of a distinct radiation path, a distinct source, a distinct source spectrum, or a distinct source polarization with respect to the other first radiations. ... Cognex Corporation

01/11/18 / #20180012052

Systems and methods for sorting image acquisition settings for pattern stitching and decoding using multiple captured images

Systems and methods are described for acquiring and decoding a plurality of images. First images are acquired and then processed to attempt to decode a symbol. ... Cognex Corporation

01/04/18 / #20180007187

System and method for connecting mobile devices with machine vision systems

A connecting system is provided for machine vision operations using a mobile device. The connecting system can include a machine vision system with an imaging device, as well as an identification feature associated with the machine vision system. ... Cognex Corporation

12/28/17 / #20170372107

Decoding barcodes

Systems and methods are provided for decoding barcodes. A scan signal is acquired along a scan through a barcode. ... Cognex Corporation

12/14/17 / #20170357035

Systems and methods reduce temperature induced drift effects on a liquid lens

Systems and methods reduce temperature induced drift effects on a liquid lens used in a vision system. A feedback loop receives a temperature value from a temperature sensor, and based on the received temperature value, controls a power to the heating element based on a difference between the measured temperature of the liquid lens and a predetermined control temperature to maintain the temperature value within a predetermined control temperature range to reduce the effects of drift. ... Cognex Corporation

12/07/17 / #20170351892

Mark reader with reduced trigger-to-decode response time

Systems and methods for use with a handheld mark reader that reduce the time between activation of the reader's trigger and the reader returning a successful decode response. Image processing may be performed prior to the user actuating the trigger and thus obtaining a decodable image with reduced delay. ... Cognex Corporation

09/14/17 / #20170262676

Optical accessory for attachment to mobile device

An attachment for use with a mobile device with an imaging device and a mobile-device light source can include one or more of an attachment base and an attachment body. The attachment base can be configured to secure the attachment body to the mobile device via a case for the mobile device. ... Cognex Corporation

08/17/17 / #20170237844

System and method for connecting mobile devices with machine vision systems

A connecting system is provided for machine vision operations using a mobile device. The connecting system can include a machine vision system with an imaging device, as well as an identification feature associated with the machine vision system. ... Cognex Corporation

08/17/17 / #20170236266

System and method for detecting defects on a specular surface with a vision system

This invention provides a system and method for detecting and imaging specular surface defects on a specular surface that employs a knife-edge technique in which the camera aperture or an external device is set to form a physical knife-edge structure within the optical path that effectively blocks reflected rays from an illuminated specular surface of a predetermined degree of slope values and allows rays deflected at differing slopes to reach the vision system camera sensor. The light reflected from the flat part of the surface is mostly blocked by the knife-edge. ... Cognex Corporation

08/17/17 / #20170236263

System and method for efficiently scoring probes in an image with a vision system

A system and method for scoring trained probes for use in analyzing one or more candidate poses of a runtime image is provided. A set of probes with location and gradient direction based on a trained model are applied to one or more candidate poses based upon a runtime image. ... Cognex Corporation

08/17/17 / #20170236258

System and method for finding lines in an image with a vision system

This invention provides a system and method for finding multiple line features in an image. Two related steps are used to identify line features. ... Cognex Corporation

08/17/17 / #20170235977

Method and apparatus for industrial identification mark verification

The invention provides methods and apparatus for analysis of images of direct part mark identification codes to measure and assess a print quality. Methods to assess the quality of a direct part mark identification code are presented that provide diagnostic information of a code that cannot be assessed using verification methods that require the results of a valid decoding step.. ... Cognex Corporation

08/17/17 / #20170235027

Constant magnification lens for vision system camera

This invention provides a lens assembly for a vision system, allowing for a constant magnification at various focal distances. The lens assembly resides movably/adjustably along the optical axis relative to the sensor. ... Cognex Corporation

07/27/17 / #20170214860

System and method for determination and adjustment of camera parameters using multi-gain images

This invention provides a system and method for auto-regulation of parameters a vision system camera and/or associated illumination of objects imaged by the camera using a plurality of differentiated gain (multi-gain) settings on the camera's image sensor to determine the gain value producing the most-readable image. The image (having the best characteristics) acquired using multiple gain settings can be read for information as a discrete gain image and/or the camera parameters (e.g. ... Cognex Corporation

07/20/17 / #20170208263

Machine vision system for forming a one dimensional digital representation of a low information content scene

A machine vision system to form a one dimensional digital representation of a low information content scene, e.g., a scene that is sparsely illuminated by an illumination plane, and the one dimensional digital representation is a projection formed with respect to columns of a rectangular pixel array of the machine vision system.. . ... Cognex Corporation

07/20/17 / #20170205495

Spatially self-similar patterned illumination for depth imaging

Methods, systems, and devices involving patterned radiation are provided in accordance with various embodiments. Some embodiments include a device for projecting pattern radiation. ... Cognex Corporation

05/18/17 / #20170140537

System and method for scoring clutter for use in 3d point cloud matching in a vision system

This invention provides a system and method for aligning first three-dimensional (3d) point cloud image representing a model with a second 3d point cloud image representing a target, using a vision system processor. A passing overall score is established for possible alignments of the first 3d point cloud image with the second 3d point cloud image. ... Cognex Corporation

05/11/17 / #20170132807

System and method for tying together machine vision coordinate spaces in a guided assembly environment

This invention provides a system and method that ties the coordinate spaces at the two locations together during calibration time using features on a runtime workpiece instead of a calibration target. Three possible scenarios are contemplated: wherein the same workpiece features are imaged and identified at both locations; wherein the imaged features of the runtime workpiece differ at each location (with a cad or measured workpiece rendition available); and wherein the first location containing a motion stage has been calibrated to the motion stage using hand-eye calibration and the second location is hand-eye calibrated to the same motion stage by transferring the runtime part back and forth between locations. ... Cognex Corporation

05/11/17 / #20170132441

Hand held symbology reader illumination diffuser

A hand held industrial identification symbol reader projects diffuse illumination onto a region of interest to produce high contrast images of symbols. The diffuse illumination is particularly well suited for producing images of symbols that are marked directly on objects. ... Cognex Corporation

03/30/17 / #20170090076

Systems and methods reduce temperature induced drift effects on a liquid lens

Systems and methods reduce temperature induced drift effects on a liquid lens used in a vision system. A feedback loop receives a temperature value from a temperature sensor, and based on the received temperature value, controls a power to the heating element based on a difference between the measured temperature of the liquid lens and a predetermined control temperature to maintain the temperature value within a predetermined control temperature range to reduce the effects of drift. ... Cognex Corporation

03/23/17 / #20170085862

Machine vision 3d line scan image acquisition and processing

A machine vision system may perform compressive sensing by aggregating signals from multiple pixels. The aggregation of signals may be based on a sampling function. ... Cognex Corporation

02/16/17 / #20170042633

Tissue marking for lesion removal

A preoperative tumor marking may be used to assist physicians in the removal of tumor tissue by clearly defining the margins of the tumor. An imaging technique, such as mammography, may be employed to visualize the tumor. ... Cognex Corporation

02/02/17 / #20170032537

Machine vision system calibration

Disclosed herein are systems and methods for machine vision. A machine vision system includes a motion rendering device, a first image sensor, and a second image sensor. ... Cognex Corporation

01/26/17 / #20170026499

Optical accessory for attachment to mobile device

An attachment for use with a mobile device with an imaging device or with a case for the mobile device can include one or more of an attachment base and an attachment body. The attachment base can be configured to be secured to at least one of the mobile device and the case. ... Cognex Corporation

01/26/17 / #20170024613

Vision system for training an assembly system through virtual assembly of objects

This invention provides a system and method for guiding the workpieces to optimal positions to train an assembly system that is generally free of the use of a cmm or similar metrology device. The system and method expresses the image features of the workpieces, when they are in their respective stations, in a common coordinate system. ... Cognex Corporation

01/26/17 / #20170023353

Handheld apparatus for quantifying component features

A handheld device and method using the device, the device comprising a sensor receiving light from within a field of view (fov) to generate a plurality of consecutive images of the fov, a structured light source that is controllable to generate a plurality of light patterns, the source arranged to project at least one light patterns into the fov where at least a portion of a pattern reflects from an object and is captured by the sensor and a processor to receive images, the processor programmed to control the source to project a pattern into the fov, locate the pattern in at least one of the generated images, locate discontinuities in the pattern and use the discontinuities to measure at least one dimension.. . ... Cognex Corporation








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