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Synthesis Of Multi Viewpoint Images At Non-Intermediate Positions
Abstract
In this paper we present an algorithm for the synthesis of multi viewpoint images at non-intermediate positions, based on stereoscopic images. We consider the synthesis of images from virtual camera positions and the synthesis of images for scene reconstruction using stereo displays. The algorithm provides scene reconstruction without geometric distortion and without any restriction to the position of the viewer. All synthesized images are based on extrapolation of a single source image and a single disparity field. This provides low use of bandwidth and compatibility with mono video systems. With teleconferencing images, the generated views were subjectively evaluated as good for viewing positions not more than one half camera baseline from the centre position. Objectively, reconstructed left and right images have PSNR values of 41 dB. 1. INTRODUCTION In video communications, 3D imaging can greatly enhance the feeling of telepresence. This requires the acquisition, transmission and p...
In this paper, we describe the view representation and reconstruction module for an image-based telepresence system, based on a viewpoint-adaptation scheme and the image-based rendering technique. For real-time three-dimensional synthesis, a parallel version of our multistep view reconstruction algorithm is realized on dedicated hardware based on Trimedia digital signal processors. A new scalable representation, named middle view stereo representation (MVSR), is further constructed to be able to adapt to the bandwidth requirement of the broadcasting network. Experiments show the promising performance of the parallel realization of the multistep view reconstruction method and the power of the MVSR representation.
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