Assignee
COGNEX CORP
US505 patents
Top patents by PatentIndex Score
US6819779B1Nov 16, 2004
Lane detection system and apparatus
COGNEX CORP227 citations99
US6728582B1Apr 27, 2004
System and method for determining the position of an object in three dimensions using a machine vision system with two cameras
COGNEX CORP168 citations99
US6408109B1Jun 18, 2002
Apparatus and method for detecting and sub-pixel location of edges in a digital image
COGNEX CORP201 citations99
US6259827B1Jul 10, 2001
Machine vision methods for enhancing the contrast between an object and its background using multiple on-axis images
COGNEX CORP140 citations99
US6173070B1Jan 9, 2001
Machine vision method using search models to find features in three dimensional images
COGNEX CORP179 citations99
US6148120ANov 14, 2000
Warping of focal images to correct correspondence error
COGNEX CORP231 citations99
US6137893AOct 24, 2000
Machine vision calibration targets and methods of determining their location and orientation in an image
COGNEX CORP166 citations99
US6061476AMay 9, 2000
Method and apparatus using image subtraction and dynamic thresholding
COGNEX CORP130 citations99
US5960125ASep 28, 1999
Nonfeedback-based machine vision method for determining a calibration relationship between a camera and a moveable object
COGNEX CORP174 citations99
US5878152AMar 2, 1999
Depth from focal gradient analysis using object texture removal by albedo normalization
COGNEX CORP157 citations99
US5768443AJun 16, 1998
Method for coordinating multiple fields of view in multi-camera
COGNEX CORP381 citations99
US7167575B1Jan 23, 2007
Video safety detector with projected pattern
COGNEX CORP65 citations98
US6850646B1Feb 1, 2005
Fast high-accuracy multi-dimensional pattern inspection
COGNEX CORP77 citations98
US6829371B1Dec 7, 2004
Auto-setup of a video safety curtain system
COGNEX CORP97 citations98
US6798925B1Sep 28, 2004
Method and apparatus for calibrating an image acquisition system
COGNEX CORP82 citations98
US6771808B1Aug 3, 2004
System and method for registering patterns transformed in six degrees of freedom using machine vision
COGNEX CORP104 citations98
US6751338B1Jun 15, 2004
System and method of using range image data with machine vision tools
COGNEX CORP100 citations98
US6748104B1Jun 8, 2004
Methods and apparatus for machine vision inspection using single and multiple templates or patterns
COGNEX CORP78 citations98
US6690842B1Feb 10, 2004
Apparatus and method for detection and sub-pixel location of edges in a digital image
COGNEX CORP74 citations98
US6658145B1Dec 2, 2003
Fast high-accuracy multi-dimensional pattern inspection
COGNEX CORP120 citations98
US6608647B1Aug 19, 2003
Methods and apparatus for charge coupled device image acquisition with independent integration and readout
COGNEX CORP94 citations98
US6539107B1Mar 25, 2003
Machine vision method using search models to find features in three-dimensional images
COGNEX CORP94 citations98
US6469734B1Oct 22, 2002
Video safety detector with shadow elimination
COGNEX CORP83 citations98
US6396949B1May 28, 2002
Machine vision methods for image segmentation using multiple images
COGNEX CORP89 citations98
US6025905AFeb 15, 2000
System for obtaining a uniform illumination reflectance image during periodic structured illumination
COGNEX CORP120 citations98
US5987172ANov 16, 1999
Edge peak contour tracker
COGNEX CORP91 citations98
US5987159ANov 16, 1999
System or method for detecting defect within a semi-opaque enclosure
COGNEX CORP119 citations98
US5978521ANov 2, 1999
Machine vision methods using feedback to determine calibration locations of multiple cameras that image a common object
COGNEX CORP113 citations98
US5912984AJun 15, 1999
Method and apparatus for in-line solder paste inspection
COGNEX CORP144 citations98
US5850466ADec 15, 1998
Golden template comparison for rotated and/or scaled images
COGNEX CORP161 citations98
US5640199AJun 17, 1997
Automated optical inspection apparatus
COGNEX CORP136 citations98
US5581632ADec 3, 1996
Method and apparatus for ball bond inspection system
COGNEX CORP106 citations98
US5548326AAug 20, 1996
Efficient image registration
COGNEX CORP141 citations98
US7016539B1Mar 21, 2006
Method for fast, robust, multi-dimensional pattern recognition
COGNEX CORP121 citations97
US6836567B1Dec 28, 2004
Fast high-accuracy multi-dimensional pattern inspection
COGNEX CORP70 citations97
US6421458B2Jul 16, 2002
Automated inspection of objects undergoing general affine transformation
COGNEX CORP84 citations97
US6215915B1Apr 10, 2001
Image processing methods and apparatus for separable, general affine transformation of an image
COGNEX CORP94 citations97
US6005978ADec 21, 1999
Robust search for image features across image sequences exhibiting non-uniform changes in brightness
COGNEX CORP130 citations97
US5982395ANov 9, 1999
Method and apparatus for parallel addressing of an image processing memory
COGNEX CORP156 citations97
US5974169AOct 26, 1999
Machine vision methods for determining characteristics of an object using boundary points and bounding regions
COGNEX CORP136 citations97
US5602937AFeb 11, 1997
Methods and apparatus for machine vision high accuracy searching
COGNEX CORP113 citations97
US5495537AFeb 27, 1996
Methods and apparatus for machine vision template matching of images predominantly having generally diagonal and elongate features
COGNEX CORP140 citations97
US7088862B1Aug 8, 2006
Fast high-accuracy multi-dimensional pattern inspection
COGNEX CORP24 citations96
US7065262B1Jun 20, 2006
Fast high-accuracy multi-dimensional pattern inspection
COGNEX CORP29 citations96
US6856698B1Feb 15, 2005
Fast high-accuracy multi-dimensional pattern localization
COGNEX CORP64 citations96
US6714679B1Mar 30, 2004
Boundary analyzer
COGNEX CORP103 citations96
US6701005B1Mar 2, 2004
Method and apparatus for three-dimensional object segmentation
COGNEX CORP60 citations96
US6457032B1Sep 24, 2002
Efficient flexible digital filtering
COGNEX CORP52 citations96
US6324299B1Nov 27, 2001
Object image search using sub-models
COGNEX CORP97 citations96
US6317513B2Nov 13, 2001
Method and apparatus for inspecting solder paste using geometric constraints
COGNEX CORP55 citations96
Showing the top 50 of 505 patents by PatentIndex Score.