{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10521697","patent":{"patent_number":"US-10521697","title":"Local connectivity feature transform of binary images containing text characters for optical character/word recognition","assignee":null,"inventors":[],"filing_date":"2017-09-29T00:00:00.000Z","publication_date":"2019-12-31T00:00:00.000Z","cpc_codes":["G06V","G06F","G06F","G06N","G06N","G06N","G06T","G06V","G06V","G06V","G06V","G06N","G06V","G06V"],"num_claims":15,"abstract":"A local connectivity feature transform (LCFT) is applied to binary document images containing text characters, to generate transformed document images which are then input into a bi-directional Long Short Term Memory (LSTM) neural network to perform character/word recognition. The LCFT transformed image is a gray scale image where the pixel values encode local pixel connectivity information of corresponding pixels in the original binary image. The transform is one that provides a unique transform score for every possible shape represented as a 3×3 block. In one example, the transform is computed using a 3×3 weight matrix that combines bit coding with a zigzag pattern to assign weights to each element of the 3×3 block, and by summing up the weights for the non-zero elements of the 3×3 block shape."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Local connectivity feature transform of binary images containing text characters for optical character/word recognition","description":"A local connectivity feature transform (LCFT) is applied to binary document images containing text characters, to generate transformed document images which are then input into a bi-directional Long S","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10521697","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-10521697","citation_suggestion":"Patentable. \"Local connectivity feature transform of binary images containing text characters for optical character/word recognition\" (US-10521697). https://patentable.app/patents/US-10521697","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10521697","json":"https://patentable.app/api/llm-context/US-10521697","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T14:01:31.372Z"}