{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9684814","patent":{"patent_number":"US-9684814","title":"Method and device for estimating orientation field of fingerprint","assignee":null,"inventors":[],"filing_date":"2014-04-10T00:00:00.000Z","publication_date":"2017-06-20T00:00:00.000Z","cpc_codes":["G06V","G06F","G06V"],"num_claims":16,"abstract":"A method for estimating an orientation field of a fingerprint is provided, comprising: obtaining an initial orientation field of a fingerprint, and putting the initial orientation field in a reference coordinate system; obtaining N initial orientation blocks corresponding to the initial orientation field, and obtaining N orientation block sets corresponding to N positions respectively from a fingerprint dictionary; obtaining a similarity between each of the N initial orientation blocks and each orientation block in the N orientation block sets corresponding to the N positions to obtain P similarities, and selecting a preset number of candidate orientation blocks for each position from the orientation block set according to the P similarities; obtaining a compatibility between two candidate orientation blocks corresponding to any two adjacent positions respectively to obtain a plurality of compatibilities; and obtaining a candidate orientation block for each position according to the P similarities and the plurality of compatibilities."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and device for estimating orientation field of fingerprint","description":"A method for estimating an orientation field of a fingerprint is provided, comprising: obtaining an initial orientation field of a fingerprint, and putting the initial orientation field in a reference","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9684814","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-9684814","citation_suggestion":"Patentable. \"Method and device for estimating orientation field of fingerprint\" (US-9684814). https://patentable.app/patents/US-9684814","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9684814","json":"https://patentable.app/api/llm-context/US-9684814","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:03:12.658Z"}