NDLI: OTESC: online transformation estimation between stereo cameras

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OTESC: online transformation estimation between stereo cameras

Content Provider	ACM Digital Library
Author	Redert, André Schreuder, Tiemen Hendriks, Emile A.
Abstract	In this paper, we describe a system that performs online transformation estimation between pre-calibrated stereo cameras. This allows the stereo cameras to be moved around and automatically re-calibrated without the use of a calibration object. This also allows the set-up to recover from accidental nudges that invalidate the extrinsic (external to the stereo camera) calibration. The obtained transformations can be used in virtual view rendering for 3D Video. The relative positions and orientations of the stereo cameras are obtained using sparse point correspondences found in different views of the scene. For each stereo camera, 3D coordinates of salient scene points are triangulated and their image feature descriptors are used to locate the same points in the views of other stereo cameras. The salient point descriptors SIFT and SURF are evaluated for this purpose. Given enough salient image points, the proposed solution accurately finds the transformation between stereo camera pairs with a reprojection error less than 1 pixel.
Starting Page	45
Ending Page	50
Page Count	6
File Format	PDF
ISBN	9781450301596
DOI	10.1145/1877791.1877804
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2010-10-29
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Stereo cameras Extrinsic calibration Self calibration
Content Type	Text
Resource Type	Article

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