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Forum Post: RE: ContextCapture E.N.U. Projection

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From CC help: When poses of photographs are georeferenced, ContextCapture uses the Earth Centered Earth Fixed (ECEF) spatial referential system. ECEF is a standard global Cartesian coordinate system. Please refer to http:// en.wikipedia.org/wiki/ECEF for a complete definition. Whereas ContextCapture uses ECEF for photo poses, it uses a local East North Up (ENU) spatial coordinate system for the 3D reconstruction process. ENU is a Cartesian coordinate system with a local origin, oriented along the WGS84 ellipsoid, with axes pointing to East (X), North (Y) and Up (Z) directions. ENU allows a more convenient manipulation of 3D models than ECEF, because its Z axis coincides with the up vector. However, please note that 3D models produced by ContextCapture can later be reprojected to any coordinate system. ---- OBJ format doesn't have SRS systems so it is in local coordinates. What you could do is change "global origin" for this dataset so it aligns correctly with your coordinates. I think OBJ supports to set false easting and northing. In your case it seems that dataset does not have SRS at all so it may not be georeferenced or even in wrong scale or fake units.

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