Performance Evaluation of Stereo for Tele-presence

In an immersive tele-presence environment a 3D remote real scene is projected from the viewpoint of the local user. This 3D world is acquired through stereo reconstruction at the remote site. In this paper, we start a performance analysis of stereo algorithms with respect to the task of immersive visualization. As opposed to usual monocular image based rendering, we are also interested in the depth error in novel views because our rendering is stereoscopic. We describe an evaluation test-bed which provides a world-wide first available set of registered dense "ground-truth" laser data and image data from multiple views. We establish metrics for novel depth views that reflect discrepancies both in the image and in 3D-space. It is well known that stereo performance is affected by both erroneous matching as well as incorrect depth triangulation. We experimentally study the effects of occlusion and low texture on the distributions of the error metrics. Then, we algebraically pred...

• Type: Conference
• Year: 2001
• Where: ICCV
• Authors: Jane Mulligan, Volkan Isler, Konstantinos Daniilidis
• Keywords: Computer Vision, Depth Error, Depth Estimates, Error Metrics, ICCV 2001, Incorrect Depth Triangulation, Stereo Performance