{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8503800","patent":{"patent_number":"US-8503800","title":"Illumination detection using classifier chains","assignee":null,"inventors":[],"filing_date":"2008-02-27T00:00:00.000Z","publication_date":"2013-08-06T00:00:00.000Z","cpc_codes":["G06V","G06F","G06V","G06V"],"num_claims":30,"abstract":"A face illumination normalization method includes acquiring a digital image including a face that appears to be illuminated unevenly. One or more uneven illumination classifier programs are applied to the face data to determine the presence of the face within the digital image and/or the uneven illumination condition of the face. The uneven illumination condition may be corrected to thereby generate a corrected face image appearing to have more uniform illumination, for example, to enhance face recognition."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Illumination detection using classifier chains","description":"A face illumination normalization method includes acquiring a digital image including a face that appears to be illuminated unevenly. One or more uneven illumination classifier programs are applied to","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8503800","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-8503800","citation_suggestion":"Patentable. \"Illumination detection using classifier chains\" (US-8503800). https://patentable.app/patents/US-8503800","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8503800","json":"https://patentable.app/api/llm-context/US-8503800","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:44:31.505Z"}