Cognex Corporation

Venkat K Gopalakrishnan

Sateesha Nadabar

Ivan A Bachelder

Carl W Gerst

Albert A Montillo

Yasunari Tosa

Raymond A Fix

Karen Roberts

Therese Hunt

Yun Chang

Rob Milligan

A method and system for applying a two dimensional mark on a first surface of a component and assessing mark quality, the method comprising the steps of positioning a component with a first surface at a first station, applying a two dimensional mark to the first surface at the first station wherein the applied mark is intended to codify a first information subset, obtaining an image of the applied two dimensional mark at the first station using a stationary camera that has a field of view that is centered along a trajectory that forms an obtuse angle with at least a portion of the first surface and that includes at least a portion of the first surface, performing a mark quality assessment on the obtained image and performing a secondary function as a result of the mark quality assessment.

Method and apparatus for verifying two dimensional mark quality

A method for calibrating a mark quality verifier assembly wherein the assembly includes a camera including a camera field of view (FOV) and a processor for running software programs that are stored in a memory that is accessible to the processor, the method comprising the steps of providing a calibration program in the memory that is accessible by the processor, providing a calibration code on a surface of a calibration tool wherein the calibration code includes calibration information, positioning the calibration tool adjacent the camera so that the calibration code is within the FOV, obtaining at least one image of the calibration code via the camera, using information in the calibration code to determine that a verifier calibration process should be performed and commencing the calibration program when the calibration code indicates that a calibration process should be performed.

Method and apparatus for calibrating a mark verifier

A method and system for applying a two dimensional mark on a first surface of a component and assessing mark quality, the method including the steps of positioning a component with a first surface at a first station, applying a two dimensional mark to the first surface at the first station wherein the applied mark is intended to codify a first information subset, obtaining an image of the applied two dimensional mark at the first station, performing a mark quality assessment on the obtained image and performing a secondary function as a result of the mark quality assessment.

A method and system for applying a two dimensional mark on a first surface of a component and assessing mark quality, the method comprising the steps of positioning a component with a first surface at a first station, applying a two dimensional mark to the first surface at the first station wherein the applied mark is intended to codify a first information subset, obtaining an image of the applied two dimensional mark at the first station, performing a mark quality assessment on the obtained image and performing a secondary function as a result of the mark quality assessment.

A method and system create a geometric object model for use in machine vision inspection. A pixel image representation of an object is acquired. Based on this pixel image representation, part models for the parts of the object are generated. Each part model corresponds to a different part of the object. From the part models of the object, a model for the entire object can be created. Using this created object model, a test inspection is performed on a set of test images, and each of the test images is associated with a set of known inspection measurements. The test inspection produces a set of testing inspection measurements. If the test inspection yields satisfactory performance, the object models created are stored.

Creating geometric model descriptions for use in machine vision inspection systems

A method and an apparatus are disclosed for finding an orientation of an object from the image of the object through the generation of, and subsequent evaluation of, at least a portion of a frequency response of the image. The orientation of the object can be used in subsequent image processing.

Methods and apparatus for determining the orientation of an object in an image

A method and an apparatus are disclosed for generating a model of an object from an image of the object. First, an orientation of the object in the image is determined through the generation of, and subsequent evaluation of, at least a portion of a frequency response of the image. Thereafter, the orientation is used to gauge the object. The gauging provides the necessary dimensional information that becomes a part of the geometrical model of the object. An embodiment is disclosed that generates a geometrical model of a leaded object from the image of the leaded object.

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Arlington, MA, United States of America

Venkat K Gopalakrishnan