{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11509791","patent":{"patent_number":"US-11509791","title":"Methods and systems for automatically identifying IR security marks in a document based on halftone frequency information","assignee":null,"inventors":[],"filing_date":"2021-08-02T00:00:00.000Z","publication_date":"2022-11-22T00:00:00.000Z","cpc_codes":["H04N","G06V","G06V","G06V","G06V","G06V","G06V","G06V","G06V"],"num_claims":21,"abstract":"The present disclosure discloses methods and systems for automatically detecting Infrared (IR) security mark based on unknown halftone frequency information. The method includes receiving a document from a user including an IR security mark. The document is scanned. Then, one or more halftone frequencies associated with the IR security mark portion are estimated. Based on the estimation, the IR security mark portion is classified into a background region and the IR marked region including the IR security mark. The IR security mark is extracted and pixels falling in the IR marked region are reconstructed to identify content in the IR security mark. Finally, the identified content is compared with one or more pre-stored IR security marks to ascertain the presence of the IR security mark in the document for further assessment. This way, the method automatically detects the IR security mark in the document."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Methods and systems for automatically identifying IR security marks in a document based on halftone frequency information","description":"The present disclosure discloses methods and systems for automatically detecting Infrared (IR) security mark based on unknown halftone frequency information. The method includes receiving a document f","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11509791","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-11509791","citation_suggestion":"Patentable. \"Methods and systems for automatically identifying IR security marks in a document based on halftone frequency information\" (US-11509791). https://patentable.app/patents/US-11509791","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11509791","json":"https://patentable.app/api/llm-context/US-11509791","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:33:51.528Z"}