Capture and Processing - 3DTV: Processing and Transmission of 3D Video Signals - page 52

Viewfinders

Steel rig

Thomson viper
cameras

Cannon lens sets
and hoods

Figure 2.8 Overview of the DIOMEDES 8-cam multi-view video acquisition
system [9]

In order to simultaneously record the captured uncompressed HD
sequences from eight cameras, four DVS ® ProntoXway ® video recorders
are used, each of which accepts input from two of the cameras. All the eight
cameras have been genlocked via an external synchronizer. The constructed
multi-camera rig is presented in Figure 2.8. All videos are stored on an NTFS
Windows ® file system, with each video frame written to a separate image
file. The video frames are stored as a sequence of 10-bit DPX images.

2.2.3.3 4-Camera Multi-View Rig of ROMEO Project
For multi-view video acquisition, a multi-view capture system has been
constructed using four STEMMER AVT GT1910C cameras, which is depicted
in Figure 2.9. Unlike the static multi-view calibration system used in the
DIOMEDES Project, the ROMEO multi-view capture rig is transportable
with a fixed camera focal length of 25 mm. As in the MUSCADE multi-view
rig, the inter-camera distances are adjustable, thanks to freely moving camera
trays. However, the inner stereoscopic pair is formed using a side-by-side
camera configuration instead of using a mirror rig. With this multi-view
acquisition system, the tunable disparity between the centre camera pair
and the outer cameras obtains different disparities and then depth budgets
for the same scene. In this particular project, several different inter-camera
distance arrangement schemes were tested and compared to each other in
terms of the created FOV of the reconstructed 3D scene on a set of targeted
3D displays. In the compared arrangement schemes, the distance between
the inner camera pair and the outer cameras was changed between 10 cm to
20 cm, while the baseline of the inner camera pair is kept constant.