{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9652652","patent":{"patent_number":"US-9652652","title":"Method and device for identifying a two-dimensional barcode","assignee":null,"inventors":[],"filing_date":"2013-04-30T00:00:00.000Z","publication_date":"2017-05-16T00:00:00.000Z","cpc_codes":["G06K","G06K","G06K","G06K"],"num_claims":19,"abstract":"A method of identifying a two-dimensional bar code in digital image data of the bar code having first and second type elements arranged in an ordered grid and an outline that includes an L-shape solid line without transitions between the first and second type elements. The method includes calculating a gradient field from the digital image data, specifying a gradient of the pixel value in the digital image data; calculating gradient magnitude data from the gradient field; performing a thresholding operation on the calculated gradient magnitude data and obtaining edge segment image data; detecting linear segments in the edge segment image data; identifying pairs of the detected linear segments; and sampling partial digital image data and detecting a presence of the first and second type elements in partial digital image data."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and device for identifying a two-dimensional barcode","description":"A method of identifying a two-dimensional bar code in digital image data of the bar code having first and second type elements arranged in an ordered grid and an outline that includes an L-shape solid","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9652652","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-9652652","citation_suggestion":"Patentable. \"Method and device for identifying a two-dimensional barcode\" (US-9652652). https://patentable.app/patents/US-9652652","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9652652","json":"https://patentable.app/api/llm-context/US-9652652","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T13:38:05.286Z"}