{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8484271","patent":{"patent_number":"US-8484271","title":"Recursive Bessel filter for stray light corrections in an imager","assignee":null,"inventors":[],"filing_date":"2010-06-25T00:00:00.000Z","publication_date":"2013-07-09T00:00:00.000Z","cpc_codes":["G06T","G06T","G06T","G06T","G06T"],"num_claims":19,"abstract":"A system for correcting infrared (IR) radiances includes an imager for receiving IR radiances and outputting intensity data corresponding to pixels in the imager. Also included is a stray light estimator for receiving the intensity data and estimating stray light in the intensity data. The stray light estimator includes a Bessel filter for low pass filtering the estimated stray light and providing corrected intensity data as an output to a user. The Bessel filter is an n-pole recursive digital filter, which is expressed as a ratio between (a) an (n−1) order polynomial of a complex number and (b) an n order polynomial of a complex number, where n is a positive integer. The Bessel filter includes an infinite response curve, in which the response curve monotonically decreases in amplitude as a function of frequency per pixels."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Recursive Bessel filter for stray light corrections in an imager","description":"A system for correcting infrared (IR) radiances includes an imager for receiving IR radiances and outputting intensity data corresponding to pixels in the imager. Also included is a stray light estima","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8484271","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-8484271","citation_suggestion":"Patentable. \"Recursive Bessel filter for stray light corrections in an imager\" (US-8484271). https://patentable.app/patents/US-8484271","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8484271","json":"https://patentable.app/api/llm-context/US-8484271","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:12:51.628Z"}