{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9805271","patent":{"patent_number":"US-9805271","title":"Scene preset identification using quadtree decomposition analysis","assignee":null,"inventors":[],"filing_date":"2009-08-18T00:00:00.000Z","publication_date":"2017-10-31T00:00:00.000Z","cpc_codes":["G06V","G06T","G06T","G06T"],"num_claims":19,"abstract":"Techniques are disclosed for matching a current background scene of an image received by a surveillance system with a gallery of scene presets that each represent a previously captured background scene. A quadtree decomposition analysis is used to improve the robustness of the matching operation when the scene lighting changes (including portions containing over-saturation/under-saturation) or a portion of the content changes. The current background scene is processed to generate a quadtree decomposition including a plurality of window portions. Each of the window portions is processed to generate a plurality of phase spectra. The phase spectra are then projected onto a corresponding plurality of scene preset image matrices of one or more scene preset. When a match between the current background scene and one of the scene presets is identified, the matched scene preset is updated. Otherwise a new scene preset is created based on the current background scene."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Scene preset identification using quadtree decomposition analysis","description":"Techniques are disclosed for matching a current background scene of an image received by a surveillance system with a gallery of scene presets that each represent a previously captured background scen","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9805271","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-9805271","citation_suggestion":"Patentable. \"Scene preset identification using quadtree decomposition analysis\" (US-9805271). https://patentable.app/patents/US-9805271","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9805271","json":"https://patentable.app/api/llm-context/US-9805271","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:37:34.433Z"}