{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9838713","patent":{"patent_number":"US-9838713","title":"Method for fast transform coding based on perceptual quality and apparatus for the same","assignee":null,"inventors":[],"filing_date":"2017-03-08T00:00:00.000Z","publication_date":"2017-12-05T00:00:00.000Z","cpc_codes":["H04N","H04N","H04N","H04N","H04N","H04N"],"num_claims":8,"abstract":"A method for fast transform coding in image compression is provided. The method includes performing prediction with respect to a current block, calculating a prediction error with respect to the current block, performing transform and quantization with respect to the current block, performing dequantization and inverse transform with respect to a transform coefficient generated through the transform and quantization, generating a reconstruction signal by summing a prediction signal generated in the performing of the prediction and a residual signal generated in the performing of the dequantization and inverse transform, calculating a rate-distortion (RD) cost related to the reconstruction signal, determining whether a size of the current block is a minimum block size, partitioning the current block into a plurality of sub-blocks, and performing transform coding with respect to the sub-blocks in response to determination that the size of the current block is not the minimum block size."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method for fast transform coding based on perceptual quality and apparatus for the same","description":"A method for fast transform coding in image compression is provided. The method includes performing prediction with respect to a current block, calculating a prediction error with respect to the curre","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9838713","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-9838713","citation_suggestion":"Patentable. \"Method for fast transform coding based on perceptual quality and apparatus for the same\" (US-9838713). https://patentable.app/patents/US-9838713","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9838713","json":"https://patentable.app/api/llm-context/US-9838713","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:18:27.347Z"}