{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8503771","patent":{"patent_number":"US-8503771","title":"Method and apparatus for estimating light source","assignee":null,"inventors":[],"filing_date":"2011-12-20T00:00:00.000Z","publication_date":"2013-08-06T00:00:00.000Z","cpc_codes":["H04N","H04N"],"num_claims":20,"abstract":"A method and apparatus for estimating a light source in an image obtained by an image device are provided. The light source estimating apparatus includes: a brightness-color correlation calculator which calculates brightness-color correlation data from an image of an object generated from at least one image frame; a color balance calculator which calculates a color balance of an entire region of the image and a color balance of a neutral gray region of the image having an average color of gray; a characteristic data generating unit which generates characteristic data of the image based on the brightness-color correlation data, the color balance of the entire region and the color balance of the neutral gray region; and an identifier which determines a type of a light source in the image, based on the characteristic data of the image."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for estimating light source","description":"A method and apparatus for estimating a light source in an image obtained by an image device are provided. The light source estimating apparatus includes: a brightness-color correlation calculator whi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8503771","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-8503771","citation_suggestion":"Patentable. \"Method and apparatus for estimating light source\" (US-8503771). https://patentable.app/patents/US-8503771","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8503771","json":"https://patentable.app/api/llm-context/US-8503771","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T20:32:59.254Z"}