{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8497477","patent":{"patent_number":"US-8497477","title":"Method and apparatus for efficient removal of gain fluctuation effects in passive thermal images","assignee":null,"inventors":[],"filing_date":"2011-02-10T00:00:00.000Z","publication_date":"2013-07-30T00:00:00.000Z","cpc_codes":["G01S","G01S"],"num_claims":15,"abstract":"A system and technique for imaging a subject at a scene overcomes the weaknesses in the existing gain fluctuation techniques by switching the environmental temperature at the scene at a rate sufficiently fast enough to obtain subsequent samples in a time period where the gain has not fluctuated sufficiently to have a negative effect on detection sensitivity. This technique is utilized in conjunction with the method of subsequent subtraction of alternate samples which both reveals the reflectance of the scene and removes gain fluctuation."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for efficient removal of gain fluctuation effects in passive thermal images","description":"A system and technique for imaging a subject at a scene overcomes the weaknesses in the existing gain fluctuation techniques by switching the environmental temperature at the scene at a rate sufficien","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8497477","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-8497477","citation_suggestion":"Patentable. \"Method and apparatus for efficient removal of gain fluctuation effects in passive thermal images\" (US-8497477). https://patentable.app/patents/US-8497477","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8497477","json":"https://patentable.app/api/llm-context/US-8497477","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T04:15:26.353Z"}