Patents by Inventor Sateesha Nadabar
Sateesha Nadabar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10592715Abstract: 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. In an illustrative embodiment the system and method includes an imaging assembly that acquires multiple image frames of the symbol in which some of those image frames have discrete, differing image parameters from others of the frames.Type: GrantFiled: August 14, 2017Date of Patent: March 17, 2020Assignee: COGNEX CORPORATIONInventor: Sateesha Nadabar
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Publication number: 20190220629Abstract: 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.Type: ApplicationFiled: August 27, 2018Publication date: July 18, 2019Inventors: Sateesha Nadabar, Carl W. Gerst III
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Patent number: 10061946Abstract: 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.Type: GrantFiled: January 4, 2017Date of Patent: August 28, 2018Inventors: Sateesha Nadabar, Carl W. Gerst, III
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Publication number: 20180218190Abstract: 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. In an illustrative embodiment the system and method includes an imaging assembly that acquires multiple image frames of the symbol in which some of those image frames have discrete, differing image parameters from others of the frames.Type: ApplicationFiled: August 14, 2017Publication date: August 2, 2018Inventor: Sateesha Nadabar
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Publication number: 20170235977Abstract: 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.Type: ApplicationFiled: January 4, 2017Publication date: August 17, 2017Inventors: Sateesha Nadabar, Carl W. Gerst, III
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Patent number: 9734376Abstract: 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. In an illustrative embodiment the system and method includes an imaging assembly that acquires multiple image frames of the symbol in which some of those image frames have discrete, differing image parameters from others of the frames.Type: GrantFiled: November 7, 2008Date of Patent: August 15, 2017Assignee: COGNEX CORPORATIONInventor: Sateesha Nadabar
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Patent number: 9552506Abstract: 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.Type: GrantFiled: December 23, 2004Date of Patent: January 24, 2017Assignee: Cognex Technology and Investment LLCInventors: Sateesha Nadabar, Carl W Gerst
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Patent number: 9465962Abstract: 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.Type: GrantFiled: October 11, 2011Date of Patent: October 11, 2016Assignee: COGNEX CORPORATIONInventors: Sateesha Nadabar, Venkat K. Gopalakrishnan, Carl W. Gerst, III
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Patent number: 9329332Abstract: Systems and methods provide for illuminating a subject using a light pipe that transmits light from a source. A method includes providing a light pipe, the light pipe defining an inner lumen through which the image sensor views the subject; providing a light source in alignment with a proximal portion of the light pipe; and using the light source, projecting a light into the light pipe and through the light pipe, the light pipe including a distal portion for providing a high-angle bright field illumination pattern on the subject with a first portion of the light and for reflecting a second portion of the light for providing a low-angle dark field illumination pattern on the subject.Type: GrantFiled: June 27, 2014Date of Patent: May 3, 2016Assignee: COGNEX CORPORATIONInventors: Carl W. Gerst, III, William H. Equitz, Justin Testa, Sateesha Nadabar
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Patent number: 9298960Abstract: Systems and methods are provided for selectively controlling the illumination, and particularly dark field illumination, applied to a symbol to be decoded, and for determining a suitable or optimized level of lighting for decoding the symbol. A method includes providing a light source comprising a plurality of individually-controllable lighting elements for providing low angle dark field illumination; activating an image sensor for detecting image data reflected from an encoded data symbol when the encoded data symbol is illuminated by the light source; and providing a controller connected to each of the individually-controllable lighting elements, the controller being programmed for: selectively activating the individually-controllable lighting elements to vary the direction of the low angle dark field illumination provided by the light source; and processing the image data detected by the image.Type: GrantFiled: May 15, 2014Date of Patent: March 29, 2016Assignee: COGNEX CORPORATIONInventors: Carl W. Gerst, III, William H. Equitz, Justin Testa, Sateesha Nadabar
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Patent number: 9213875Abstract: This invention overcomes the disadvantages of the prior art by providing a system and method for reading symbology, and more typically linear barcodes (“symbols”) that employs trained attributes that remain invariant between scans of different barcodes during runtime to tune various aspects of the procedure for locating and decoding such barcodes. The procedure relies upon a training step in which one or more exemplary barcodes are decoded and the invariant attributes for such barcodes, including, but not limited to, size, shape, relative angle in the image field of view and resolution are stored. The runtime decoding procedure then employs these attributes to constrain the search for subsequent, scanned barcodes and then decode it according to a plurality of tuned steps.Type: GrantFiled: July 18, 2006Date of Patent: December 15, 2015Assignee: COGNEX CORPORATIONInventors: Sateesha Nadabar, Ivan Bachelder
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Publication number: 20150016139Abstract: Systems and methods provide for illuminating a subject using a light pipe that transmits light from a source. A method includes providing a light pipe, the light pipe defining an inner lumen through which the image sensor views the subject; providing a light source in alignment with a proximal portion of the light pipe; and using the light source, projecting a light into the light pipe and through the light pipe, the light pipe including a distal portion for providing a high-angle bright field illumination pattern on the subject with a first portion of the light and for reflecting a second portion of the light for providing a low-angle dark field illumination pattern on the subject.Type: ApplicationFiled: June 27, 2014Publication date: January 15, 2015Inventors: Carl W. Gerst, III, William H. Equitz, Justin Testa, Sateesha Nadabar
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Publication number: 20150014415Abstract: Systems and methods are provided for selectively controlling the illumination, and particularly dark field illumination, applied to a symbol to be decoded, and for determining a suitable or optimized level of lighting for decoding the symbol. A method includes providing a light source comprising a plurality of individually-controllable lighting elements for providing low angle dark field illumination; activating an image sensor for detecting image data reflected from an encoded data symbol when the encoded data symbol is illuminated by the light source; and providing a controller connected to each of the individually-controllable lighting elements, the controller being programmed for: selectively activating the individually-controllable lighting elements to vary the direction of the low angle dark field illumination provided by the light source; and processing the image data detected by the image.Type: ApplicationFiled: May 15, 2014Publication date: January 15, 2015Inventors: Carl W. Gerst, III, William H. Equitz, Justin Testa, Sateesha Nadabar
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Patent number: 8770483Abstract: Systems and methods provide for illuminating a subject using a light pipe that transmits light from a source. A method includes providing a light pipe, the light pipe defining an inner lumen through which the image sensor views the subject; providing a light source in alignment with a proximal portion of the light pipe; and using the light source, projecting a light into the light pipe and through the light pipe, the light pipe including a distal portion for providing a high-angle bright field illumination pattern on the subject with a first portion of the light and for reflecting a second portion of the light for providing a low-angle dark field illumination pattern on the subject.Type: GrantFiled: September 20, 2012Date of Patent: July 8, 2014Assignee: Cognex Technology and Investment CorporationInventors: Carl W. Gerst, III, William H. Equitz, Justin Testa, Sateesha Nadabar
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Patent number: 8740078Abstract: Systems and methods are provided for selectively controlling the illumination, and particularly dark field illumination, applied to a symbol to be decoded, and for determining a suitable or optimized level of lighting for decoding the symbol. A method includes providing a light source comprising a plurality of individually-controllable lighting elements for providing low angle dark field illumination; activating an image sensor for detecting image data reflected from an encoded data symbol when the encoded data symbol is illuminated by the light source; and providing a controller connected to each of the individually-controllable lighting elements, the controller being programmed for: selectively activating the individually-controllable lighting elements to vary the direction of the low angle dark field illumination provided by the light source; and processing the image data detected by the image.Type: GrantFiled: September 20, 2012Date of Patent: June 3, 2014Assignee: Cognex Technology and Investment CorporationInventors: Carl W. Gerst, III, William H. Equitz, Justin Testa, Sateesha Nadabar
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Publication number: 20130233926Abstract: Systems and methods are provided for selectively controlling the illumination, and particularly dark field illumination, applied to a symbol to be decoded, and for determining a suitable or optimized level of lighting for decoding the symbol. A method includes providing a light source comprising a plurality of individually-controllable lighting elements for providing low angle dark field illumination; activating an image sensor for detecting image data reflected from an encoded data symbol when the encoded data symbol is illuminated by the light source; and providing a controller connected to each of the individually-controllable lighting elements, the controller being programmed for: selectively activating the individually-controllable lighting elements to vary the direction of the low angle dark field illumination provided by the light source; and processing the image data detected by the image.Type: ApplicationFiled: September 20, 2012Publication date: September 12, 2013Applicant: Cognex Technology and Investment CorporationInventors: Carl W. Gerst, III, William H. Equitz, Justin Testa, Sateesha Nadabar
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Publication number: 20130194819Abstract: Systems and methods provide for illuminating a subject using a light pipe that transmits light from a source. A method includes providing a light pipe, the light pipe defining an inner lumen through which the image sensor views the subject; providing a light source in alignment with a proximal portion of the light pipe; and using the light source, projecting a light into the light pipe and through the light pipe, the light pipe including a distal portion for providing a high-angle bright field illumination pattern on the subject with a first portion of the light and for reflecting a second portion of the light for providing a low-angle dark field illumination pattern on the subject.Type: ApplicationFiled: September 20, 2012Publication date: August 1, 2013Applicants: Cognex Technology and Investment Corp., Cognex CorporationInventors: Carl W. Gerst, William H. Equitz, Justin Testa, Sateesha Nadabar
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Patent number: 8464950Abstract: A method and apparatus for performing a vision process using a camera having a multi-focus lens having a lens field of view where the lens can be set at different focus positions the method comprising the steps of positioning at least one of the camera and an item to be imaged so the lens field of view is directed at the item to be imaged, obtaining a plurality of images where each image is obtained with the lens focus at a different position and after each image is obtained, attempting to perform the machine vision process using the image irrespective of whether or not the lens was focused when the image was obtained.Type: GrantFiled: December 22, 2008Date of Patent: June 18, 2013Assignee: Cognex CorporationInventors: Sateesha Nadabar, William Equitz
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Patent number: 8322620Abstract: A method is provided for reading distorted optical symbols using known locating and decoding methods, without requiring a separate and elaborate camera calibration procedure, without excessive computational complexity, and without compromised burst noise handling. The invention exploits a distortion-tolerant method for locating and decoding 2D code symbols to provide a correspondence between a set of points in an acquired image and a set of points in the symbol. A coordinate transformation is then constructed using the correspondence, and run-time images are corrected using the coordinate transformation. Each corrected run-time image provides a distortion-free representation of a symbol that can be read by traditional code readers that normally cannot read distorted symbols. The method can handle both optical distortion and printing distortion. The method is applicable to “portable” readers when an incident angle with the surface is maintained, the reader being disposed at any distance from the surface.Type: GrantFiled: January 6, 2011Date of Patent: December 4, 2012Assignee: Cognex Technology and Investment CorporationInventors: Xiangyun Ye, Sateesha Nadabar
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Publication number: 20120116704Abstract: 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.Type: ApplicationFiled: October 11, 2011Publication date: May 10, 2012Applicant: COGNEX CORPORATIONInventors: Sateesha Nadabar, Venkat K. Gopalakrishnan, Carl W. Gerst