Object detection Cables, pipelines and boulders Automated contact recognition The Stema Silas Object detection package enhances the high resolution data acquired from the EBP system by integrated processing techniques and applies an automated contact recognition technique. The contact recognition consists of the automated determination of two parameters: • Semblance of apex of hyperbola (top of contact) • Power of hyperbola These parameters are quality fi gures which also enable a more objective classifi cation of detected contacts. Plan view with track lines, contacts and multibeam data. Comparison of seismic boulder registration in regular Silas display (top) and seismic power display (bottom). The latter has been developed specifi cally to identify individual boulders sub-bottom. Objects detected: • Infi eld cables • Export cables • Oil pipelines • Gas pipelines • Water pipelines • Boulders for cable trenching • Wrecks The contact data and its parameters can be managed and inspected in several displays: • Plan view with Geotiffs • Contact display • Navigation View The Stema Silas Object detection package can be interfaced with DXF-fi les and contacts from other data sources such as: • Multibeam • SSS • Magnetometer • GPR This integration permits the user to present a full cable passport, with multiple data sources to illustrate the exact cable lay. 13
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