{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8509504","patent":{"patent_number":"US-8509504","title":"Point spread function radial component implementation in Joseph's forward projector","assignee":null,"inventors":[],"filing_date":"2009-09-16T00:00:00.000Z","publication_date":"2013-08-13T00:00:00.000Z","cpc_codes":["G06T","G06T"],"num_claims":3,"abstract":"Point spread function (PSF) radial filtering in a line of response space. Modeling a radial component, R, of a point spread filter as a function of at least a radial projection index ρ, a radial image space coordinate r, and an azimuth θ. The index ρ is characterized by an asymmetrical Gaussian distribution having where σleft(r) and σright(r) derived from point source measurements, and an adjustment σJ(r, θ) estimated from point source sinogram by Josephs' projector."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Point spread function radial component implementation in Joseph's forward projector","description":"Point spread function (PSF) radial filtering in a line of response space. Modeling a radial component, R, of a point spread filter as a function of at least a radial projection index ρ, a radial image","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8509504","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-8509504","citation_suggestion":"Patentable. \"Point spread function radial component implementation in Joseph's forward projector\" (US-8509504). https://patentable.app/patents/US-8509504","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8509504","json":"https://patentable.app/api/llm-context/US-8509504","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:16:40.415Z"}