André Redert

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Reconstruction of 3D scene geometry is an important element for scene understanding, autonomous vehicle and robot navigation, image retrieval, and 3D television. We propose accounting for the inherent structure of the visual world when trying to solve the scene reconstruction problem. Consequently, we identify geometric scene categorization as the first(More)
We describe the goals of the ATTEST project, which started in March 2002 as part of the Information Society Technologies (IST) programme, sponsored by the European Commission. In the 2-year project, several industrial and academic partners cooperate towards a flexible, 2D-compatible and commercially feasible 3D-TV system for broadcast environments. An(More)
This paper describes a hardware system and the underlying algorithms that were developed for realtime stereoscopic videoconferencing with viewpoint adaptation within the European PANORAMA project. The goal was to achieve a true telepresence illusion for the remote partners. For this purpose, intermediate views at arbitrary positions must be synthesized from(More)
Recently, methods for estimating 3D scene geometry or absolute scene depth information from 2D image content have been proposed. However, general applicability of these methods in depth estimation may not be realizable, as inconsistencies may be introduced due to a large variety of possible pictorial content. We identify scene categorization as the first(More)
We present a method for improving the temporal stability of video object segmentation algorithms for 3D-TV applications. First, two quantitative measures to evaluate temporal stability without ground-truth are presented. Then, a pseudo-3D curve evolution method, which spatio-temporally stabilizes the estimated object segments is introduced. Temporal(More)
A new method is presented for extracting the musical key from raw audio data. The method is based on the extraction of chromagrams using a new approach for tonal component selection taking into account auditory masking. The extracted chromagrams were used to train three key profiles for major and three key profiles for minor keys. The three trained key(More)
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(More)
— In the area of visual perception research, information about a person's attention on visual stimuli that are shown on a screen can be used for various purposes, such as studying the phenomenon of human vision itself or investigating eye movements while that person is looking at images and video sequences. This paper describes a non-intrusive method to(More)