{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8487958","patent":{"patent_number":"US-8487958","title":"Method and system for changing image density and contrast","assignee":null,"inventors":[],"filing_date":"2009-11-25T00:00:00.000Z","publication_date":"2013-07-16T00:00:00.000Z","cpc_codes":["G06T","G06F","G06T","G06T","G06T","G06T"],"num_claims":17,"abstract":"At least one of two enhancement methods for changing contrast and/or density are applied to an image. According to a first enhancement method the window width/level settings of the image are modified and according to a second enhancement method density and contrast of the image are modified by modifying a multi-scale representation of the image whereby modification is derived from at least two gradient functions determined at different scales, a gradient function at a specific scale specifying the dependency of contrast amplification at said scale as a function of density. The amount of modification obtained by applying either of said first and second enhancement methods is determined by the amount of movement of at least one indicium."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and system for changing image density and contrast","description":"At least one of two enhancement methods for changing contrast and/or density are applied to an image. According to a first enhancement method the window width/level settings of the image are modified ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8487958","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-8487958","citation_suggestion":"Patentable. \"Method and system for changing image density and contrast\" (US-8487958). https://patentable.app/patents/US-8487958","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8487958","json":"https://patentable.app/api/llm-context/US-8487958","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:51:22.220Z"}