{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8538140","patent":{"patent_number":"US-8538140","title":"Device and method for detecting whether an image is blurred","assignee":null,"inventors":[],"filing_date":"2009-06-22T00:00:00.000Z","publication_date":"2013-09-17T00:00:00.000Z","cpc_codes":["G06V","G06F","G06F","G06V","H04N"],"num_claims":37,"abstract":"The present invention is directed to a method for detecting or predicting (302, 602) whether a test image is blurred. In one embodiment, the method includes extracting a training statistical signature (366) that is based on a plurality of data features (362, 364) from a training image set (14, 16), the training image set (14, 16) including a sharp image (14) and a blurry image (16); training a classifier (368) to discriminate between the sharp image (14) and the blurry image (16) based on the training statistical signature; and applying (302, 602) the trained classifier to a test image that is not included in the training image set (14, 16) to predict whether the test image is sharp (18) or blurry (20). The step of extracting can include measuring one or more statistical moments (576, 776) for various levels (L0-L5), estimating a covariance (577, 777) between adjacent levels (L0-L5), and/or extracting various metadata features (364, 664) from the images (14, 16). The step of training (300, 600) can include training a non-linear support vector machine (300) or a linear discriminant analysis (600) on the training statistical signature of the training image set (14, 16)."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Device and method for detecting whether an image is blurred","description":"The present invention is directed to a method for detecting or predicting (302, 602) whether a test image is blurred. In one embodiment, the method includes extracting a training statistical signature","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8538140","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-8538140","citation_suggestion":"Patentable. \"Device and method for detecting whether an image is blurred\" (US-8538140). https://patentable.app/patents/US-8538140","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8538140","json":"https://patentable.app/api/llm-context/US-8538140","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T21:55:17.397Z"}