{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8493466","patent":{"patent_number":"US-8493466","title":"Red-eye filter method and apparatus","assignee":null,"inventors":[],"filing_date":"2012-08-07T00:00:00.000Z","publication_date":"2013-07-23T00:00:00.000Z","cpc_codes":["G06T","G06T","G06V","G06V","G06V","H04N","H04N","H04N","H04N","H04N","H04N","G06T","G06T","G06T"],"num_claims":30,"abstract":"A digital image acquisition system having no photographic film, such as a digital camera, has a flash unit for providing illumination during image capture and a red-eye filter for detecting a region within a captured image indicative of a red-eye phenomenon, the detection being based upon a comparison of the captured image and a reference image of nominally the same scene taken without flash. In the embodiment the reference image is a preview image of lower pixel resolution than the captured image, the filter matching the pixel resolutions of the captured and reference images by up-sampling the preview image and/or sub-sampling the captured image. The filter also aligns at least portions of the captured image and reference image prior to comparison to allow for, e.g. movement in the subject."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Red-eye filter method and apparatus","description":"A digital image acquisition system having no photographic film, such as a digital camera, has a flash unit for providing illumination during image capture and a red-eye filter for detecting a region w","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8493466","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-8493466","citation_suggestion":"Patentable. \"Red-eye filter method and apparatus\" (US-8493466). https://patentable.app/patents/US-8493466","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8493466","json":"https://patentable.app/api/llm-context/US-8493466","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T14:09:28.523Z"}