{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11244181","patent":{"patent_number":"US-11244181","title":"Method and apparatus for detecting liveness based on phase difference","assignee":null,"inventors":[],"filing_date":"2020-09-10T00:00:00.000Z","publication_date":"2022-02-08T00:00:00.000Z","cpc_codes":["G06V","G06F","G06F","G06T","G06V","G06V","G06V","G06V","G06V","G06T","G06T"],"num_claims":24,"abstract":"A method and apparatus for detecting a liveness based on a phase difference are provided. The method includes generating a first phase image based on first visual information of a first phase, generating a second phase image based on second visual information of a second phase, generating a minimum map based on a disparity between the first phase image and the second phase image, and detecting a liveness based on the minimum map."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for detecting liveness based on phase difference","description":"A method and apparatus for detecting a liveness based on a phase difference are provided. The method includes generating a first phase image based on first visual information of a first phase, generat","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11244181","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-11244181","citation_suggestion":"Patentable. \"Method and apparatus for detecting liveness based on phase difference\" (US-11244181). https://patentable.app/patents/US-11244181","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11244181","json":"https://patentable.app/api/llm-context/US-11244181","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:24:18.050Z"}