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Get 3D scene from multi-view stereo without camera and pose data by pointmap representation DUSt3R

Get 3D scene from multi-view stereo without camera and pose data by pointmap representation DUSt3R


DUSt3R: Geometric 3D Vision Made Easy



Multi-view stereo reconstruction (MVS) ... requires ... estimate the camera parameters e.g. intrinsic and extrinsic parameters ... introduce DUSt3R ... without prior information about camera calibration nor viewpoint poses.


... cast the pairwise reconstruction problem as a regression of pointmaps, relaxing the hard constraints of usual projective camera models ... this ... unifies the monocular and binocular reconstruction cases.


... where more than two images ... propose a simple yet effective global alignment strategy that expresses all pairwise pointmaps in a common reference frame.


... base ... network architecture on standard Transformer encoders and decoders, allowing us to leverage powerful pretrained models.


... formulation directly provides a 3D model of the scene ... depth ... pixel matches, relative and absolute camera.


... DUSt3R can unify various 3D vision tasks and set new SoTAs on monocular/multi-view depth estimation as well as relative pose estimation ...



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