{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8462390","patent":{"patent_number":"US-8462390","title":"Image processing method and apparatus","assignee":null,"inventors":[],"filing_date":"2009-10-19T00:00:00.000Z","publication_date":"2013-06-11T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":10,"abstract":"An image processing method includes: generating a stochastic screening dither matrix (S101); performing a centered positive-negative conversion operation on the stochastic screening dither matrix (S102); generating a screen dot dither contrast matrix for each color surface according to the stochastic screening dither matrix after being subjected to the positive-negative conversion operation and a stochastic screening dither threshold set for each color surface of an image; performing a logical “and” operation between each data item in a one-bit amplitude modulation screen dot matrix of each color surface of the image and a data item at a corresponding position in the screen dot dither contrast matrix of the color surface, and using a result as a processed value of a corresponding data item in the one-bit amplitude modulation screen dot matrix of the color surface. An apparatus corresponding to the image processing method is also provided. According to the above-described image processing method and apparatus, the problem in the prior art of an excess of pure-color pixels existing in an original one-bit dot matrix can be resolved."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Image processing method and apparatus","description":"An image processing method includes: generating a stochastic screening dither matrix (S101); performing a centered positive-negative conversion operation on the stochastic screening dither matrix (S10","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8462390","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-8462390","citation_suggestion":"Patentable. \"Image processing method and apparatus\" (US-8462390). https://patentable.app/patents/US-8462390","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8462390","json":"https://patentable.app/api/llm-context/US-8462390","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T23:06:11.048Z"}