{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8472744","patent":{"patent_number":"US-8472744","title":"Device and method for estimating whether an image is blurred","assignee":null,"inventors":[],"filing_date":"2009-05-26T00:00:00.000Z","publication_date":"2013-06-25T00:00:00.000Z","cpc_codes":["G06T","G06T","H04N","H04N","H04N","H04N","G06T"],"num_claims":29,"abstract":"A method for estimating whether an image (14) is either blurred or sharp includes the steps of (i) determining an image gradient histogram distrbution (410) of at least a portion of the image (14), (ii) comparing at least a portion of the image gradient histogram distribution (410) to a Gaussian model (414), and (iii) estimating a defocus blur size of at least a portion of the image (14) Additional methods for evaluating whether the image (14) has motion blur are provided herein For example, a dominant gradient orientation can be detected by histogram analysis (716), and the dominant gradient orientation (718) can be used to determine a possible motion blur direction (720) Alternatively, a dominant gradient orientation can be detected using principal component analysis (“PCA”) on the image."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Device and method for estimating whether an image is blurred","description":"A method for estimating whether an image (14) is either blurred or sharp includes the steps of (i) determining an image gradient histogram distrbution (410) of at least a portion of the image (14), (i","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8472744","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-8472744","citation_suggestion":"Patentable. \"Device and method for estimating whether an image is blurred\" (US-8472744). https://patentable.app/patents/US-8472744","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8472744","json":"https://patentable.app/api/llm-context/US-8472744","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:08:30.951Z"}