{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8503811","patent":{"patent_number":"US-8503811","title":"Filters for denoising digital images with minimized blur and shape distortion and controlled deblurring","assignee":null,"inventors":[],"filing_date":"2007-05-24T00:00:00.000Z","publication_date":"2013-08-06T00:00:00.000Z","cpc_codes":["H04N","G06T","G06T","G06T","G06V","G06T"],"num_claims":14,"abstract":"A curvature-preserving filter having a null covariance matrix is applied to an input image to produce a denoised output image for output to a graphic display device or to a machine analysis tool. In one embodiment, the input image is a small kernel consisting of a limited number of pixels and the filter is applied to the input image by direct summation. In another embodiment, a digital image is input into an image processor that executes a Fourier transform to produce a Fourier-transformed signal. The curvature-preserving filter is applied to the Fourier-transformed signal in Fourier space to produce a denoised signal, then the denoised signal is transformed by an inverse Fourier transform to generate a denoised output image In an alternate embodiment, the filter further produces a deblurred signal by including an inverse point-response function."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Filters for denoising digital images with minimized blur and shape distortion and controlled deblurring","description":"A curvature-preserving filter having a null covariance matrix is applied to an input image to produce a denoised output image for output to a graphic display device or to a machine analysis tool. In o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8503811","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-8503811","citation_suggestion":"Patentable. \"Filters for denoising digital images with minimized blur and shape distortion and controlled deblurring\" (US-8503811). https://patentable.app/patents/US-8503811","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8503811","json":"https://patentable.app/api/llm-context/US-8503811","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T12:44:14.020Z"}