{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8520953","patent":{"patent_number":"US-8520953","title":"Apparatus and method for extracting edges of image","assignee":null,"inventors":[],"filing_date":"2010-10-15T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["H04N","G06T"],"num_claims":18,"abstract":"Provided are an apparatus and method for more accurately extracting edge portions from an image in various conditions. The apparatus includes: a brightness calculation unit calculating a representative brightness value of the neighborhood of a current pixel; a threshold value calculation unit calculating a threshold value, based on which it is determined whether the current pixel is an edge, by using the calculated representative brightness value; a mask application unit calculating a masking value by applying a mask to an area containing at least the current pixel; and an edge determination unit determining whether the current pixel is an edge by comparing the masking value and the threshold value."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus and method for extracting edges of image","description":"Provided are an apparatus and method for more accurately extracting edge portions from an image in various conditions. The apparatus includes: a brightness calculation unit calculating a representativ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8520953","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-8520953","citation_suggestion":"Patentable. \"Apparatus and method for extracting edges of image\" (US-8520953). https://patentable.app/patents/US-8520953","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8520953","json":"https://patentable.app/api/llm-context/US-8520953","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T15:00:16.422Z"}