{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8487949","patent":{"patent_number":"US-8487949","title":"Image processing apparatus and image processing method","assignee":null,"inventors":[],"filing_date":"2009-06-17T00:00:00.000Z","publication_date":"2013-07-16T00:00:00.000Z","cpc_codes":["G09G","G09G","G09G","G09G","G09G","G09G"],"num_claims":14,"abstract":"The RGB values of each pixel in every frame are converted into ideal tristimulus values X, Y, and Z. Based on a chromaticity-histogram based on the tristimulus values X, Y, and Z and a color gamut for each Y value corrected in accordance with a backlight-brightness, an xy error count generation unit obtains the number of chromaticity errors for each of a plurality of backlight-brightnesses. A lightness-histogram is created based on the RGB signals for each frame. Based on the histogram and a lightness higher than a maximum tone after correction according to the backlight-brightness, a lightness error count generation unit obtains the number of lightness errors for each of the plurality of backlight-brightnesses. An error minimum BL-brightness detection unit decides an optimum backlight-brightness based on the number of chromaticity errors and the number of lightness errors. A tone conversion unit performs tone conversion in accordance with the backlight-brightness."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Image processing apparatus and image processing method","description":"The RGB values of each pixel in every frame are converted into ideal tristimulus values X, Y, and Z. Based on a chromaticity-histogram based on the tristimulus values X, Y, and Z and a color gamut for","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8487949","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-8487949","citation_suggestion":"Patentable. \"Image processing apparatus and image processing method\" (US-8487949). https://patentable.app/patents/US-8487949","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8487949","json":"https://patentable.app/api/llm-context/US-8487949","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:12:08.471Z"}