Systems and methods for recognition of unreadable characters on printed circuit boards
AssigneeSkyworks Solutions, Inc.
InventorCarlos Fabian NAVA
Life of this patent
Estimating the term…
Abstract
Systems and methods for recognition of unreadable characters on printed circuit boards. In some embodiments, a method for recognizing characters can be utilized for recognition of damaged characters on a printed circuit board. The method can include obtaining a digital image for each of a plurality of characters on the printed circuit board. The method can further include dividing each digital image into an array of regions. The method can further include generating a data structure from the arrays of the digital images. The data structure can include gradient features based on stroke shapes on small distances, structural features based on stroke trajectories on extended distances, and concavity features based on stroke relationships.
Claims20
A method for recognizing characters imprinted on a printed circuit board, the method comprising:
- obtaining a digital image for each of a plurality of characters on the printed circuit board;
- dividing each digital image into an array of regions;
- and
- generating a data structure from the arrays of the digital images, the data structure including gradient features based on stroke shapes on small distances, structural features based on stroke trajectories on extended distances, and concavity features based on stroke relationships.
A method for recognizing characters imprinted on a printed circuit board, the method comprising:
- obtaining a digital image of a character on the printed circuit board;
- and
- performing an optical character recognition process on the digital image using trained information that includes gradient features based on stroke shapes on small distances, structural features based on stroke trajectories on extended distances, and concavity features based on stroke relationships.
A system for processing printed circuit boards, comprising:
- a first production system configured to fabricate a plurality of printed circuit boards, each printed circuit board including a plurality of characters imprinted thereon to provide information about the printed circuit board;
- and
- a character recognition system configured to monitor at least some of the printed circuit boards, and including an imaging component configured to obtain a digital image of the characters on a selected printed circuit board, and a processor configured to perform an optical character recognition process on the digital image using trained information that includes gradient features based on stroke shapes on small distances, structural features based on stroke trajectories on extended distances, and concavity features based on stroke relationships.
Dependencies are inferred from the claim text.