A single-camera method for three-dimensional video imaging

We describe a novel method for recovering the three-dimensional (3D) point geometry of an object from images acquired with a single-camera. Typically, multiple cameras are used to record 3D geometry. Occasionally, however, there is a need to record 3D geometry when the use of multiple cameras is eit...

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Bibliographic Details
Published in:Journal of neuroscience methods 2002-10, Vol.120 (1), p.65-83
Main Authors: Eian, J., Poppele, R.E.
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Biomechanics
Cats
Fundamental and applied biological sciences. Psychology
Gait
General aspects. Models. Methods
Imaging, Three-Dimensional - instrumentation
Imaging, Three-Dimensional - methods
Kinematics
Models, Theoretical
Reconstruction
Robotics - instrumentation
Robotics - methods
Three-dimension
Vertebrates: nervous system and sense organs
Video
Video Recording - instrumentation
Video Recording - methods
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Description
Summary:We describe a novel method for recovering the three-dimensional (3D) point geometry of an object from images acquired with a single-camera. Typically, multiple cameras are used to record 3D geometry. Occasionally, however, there is a need to record 3D geometry when the use of multiple cameras is either too costly or impractical. The algorithm described here uses single-camera images and requires in addition that each marker on the object be linked to at least one other marker by a known distance. The linkage distances are used to recover information about the third dimension that would otherwise be lost in single-camera two-dimensional images. The utilities of the method are its low-cost, simplicity, and ease of calibration and implementation. We were able to estimate 3D distances and positions as accurately as with a commercially available multi-camera 3D system. This method may be useful in pilot studies to determine whether 3D imaging systems are required, or, it can serve as a low-cost alternative to multi-camera systems.
ISSN:0165-0270
1872-678X
DOI:10.1016/S0165-0270(02)00191-7