tailieunhanh - Báo cáo hóa học: " Research Article Modulating the Shape and Size of Backprojection Surfaces to Improve Accuracy in Volumetric Stereo"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Modulating the Shape and Size of Backprojection Surfaces to Improve Accuracy in Volumetric Stereo | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2009 Article ID 129789 10 pages doi 2009 129789 Research Article Modulating the Shape and Size of Backprojection Surfaces to Improve Accuracy in Volumetric Stereo X. Zabulis and G. D. Floros Institute of Computer Science Foundation for Research and Technology-Hellas N. Plastira 100 Vassilika Vouton 700 13 Heraklion Crete Greece Correspondence should be addressed to X. Zabulis zabulis@ Received 14 October 2007 Accepted 7 April 2008 Recommended by John Watson In 3D TV applications the extraction of 3D representations of dynamic scenes from images plays a central role in the preparation of the presented visual content. This paper focuses on the stereo cue to the extraction of these representations and in particular on the recently developed family of volumetric approaches to stereo. Two methods are proposed that improve the accuracy of volumetric stereo approaches which compare backprojections of image regions to establish stereo correspondences. The proposed methods are based on maximizing the utilization of the available image resolution as well as equalizing the sampled image area across pairs of image regions that are compared. Copyright 2009 X. Zabulis and G. D. Floros. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. Introduction The goal of 3D television demands for high-quality and free-viewpoint visualization of a dynamic scene. Besides advances in transmission visualization and displays a critical aspect of this technology is the automatic preparation of the 3D content to be shown. In this paper efforts towards the more accurate reconstruction of scenes are presented. The requirement of realistic free-viewpoint visualization of 3D content demands knowledge of scene geometry in order to cope