{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8521489","patent":{"patent_number":"US-8521489","title":"Method and device for contact simulation using layered depth images","assignee":null,"inventors":[],"filing_date":"2009-02-04T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["G06T","G06T","G06T","G06T"],"num_claims":16,"abstract":"A method for the interactive simulation of an intersection between at least two volumetric objects modelled using geometric primitives. The method first includes applying a Layered Depth Image (LDI) algorithm along a first display axis in order to determine a set of contact pixels. The method further includes: —calculating an intersection volume (V) from the contact pixels; —at each summit of the geometric primitives, calculating a partial derivative of the size of the intersection volume (V) relative to the coordinate of the summit along the projection axis; repeating the preceding steps for the two other orthogonal display axes in order to determine a vector containing the partial derivatives of the size of the volume relative to the coordinates of each of the summits; and—at each summit, associating a force f calculated from the partial derivatives."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and device for contact simulation using layered depth images","description":"A method for the interactive simulation of an intersection between at least two volumetric objects modelled using geometric primitives. The method first includes applying a Layered Depth Image (LDI) a","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8521489","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-8521489","citation_suggestion":"Patentable. \"Method and device for contact simulation using layered depth images\" (US-8521489). https://patentable.app/patents/US-8521489","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8521489","json":"https://patentable.app/api/llm-context/US-8521489","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:58:36.901Z"}