The choice of camera setup in 3D motion reconstruction systems

In this study the accuracy of 3D reconstruction systems using different camera setup in horizontal or vertical direction (plane) was investigated. Since it is critical that the object being filmed has to be visible by at least two cameras one is trying to keep cameras as parallel as possible to increase a common field of view. Also a camera positioned perpendicular to the area of interest assures better resolution in the horizontal and vertical directions (X-axis and Y-axis). On the other hand the depth resolution (Z-axis) suffers when cameras optical axes do not converge enough. Theoretically and also shown in practice angle of intersection from 60/spl deg/ to 120/spl deg/ is equally reliable. The convergent vertical camera set-up (one camera positioned above the other) is expected to encompass both requirements: depth of resolution and satisfactory large common field of view.