Concept

Motion compensation

Publications associées (299)

Unified approach to reconstruction and modification of motion and image data

This article describes an approach based on hierarchical radial basis functions for the reconstruction and modification of motion/image data, which are formulated as problems of scattered data interpolation. Assuming little about the data and choosing high ...

IEEE2002

Dynamic Region and Block-Based Motion Estimation for Video Compression

Pierre Vandergheynst, Philippe Jost

The aim of this project is to find a motion estimation method that works in combination with block matching in order to reduce the visible artifacts. The proposed solution tries to extract the real motions taking place in a sequence. The developed algorith ...

2002

New Dictionary and Fast Atom Searching Method for Matching Pursuit Representation of Displaced Frame Difference

Pascal Frossard, Pierre Vandergheynst, Lorenzo Granai

Matching Pursuit decomposes a signal into a linear expansion of functions selected from a redundant dictionary, isolating the signal structures that are coherent with respect to a given dictionary. In this paper we focus on the Matching Pursuit representat ...

SPIE2002

New Dictionary and Fast Atom Searching Methods for Matching Pursuit Representation of Displaced Frame Difference

Pascal Frossard, Pierre Vandergheynst, Lorenzo Granai

Matching pursuit decomposes a signal into a linear expansion of functions selected from a redundant dictionary, isolating the signal structures that are coherent with respect to a given dictionary. In this paper we focus on the Matching Pursuit representat ...

IEEE2002

Algorithms for Video Structuring

Daniel Gatica-Perez, Jean-Marc Odobez

Video structuring aims at automatically finding structure in a video sequence. Occupying a key-position within video analysis, it is a fundamental step for quality indexing and browsing. As a low level video analysis, video structuring can be seen as a ser ...

IDIAP2002

Key-posture extraction out of human motion data by curve simplification

Daniel Thalmann, Ik Soo Lim

Recent progress in 3-D capture technology has made it possible to obtain much of realistic motion data of human subjects. Being captured in high frame rates, compression or extraction of key postures out of the motion data is useful for storage, transfer a ...

Kyoto University2001

Key-posture extraction out of human motion data

Daniel Thalmann

IEEE2001

Smart Camera for MPEG-7

While a first generation of video coding techniques proposed to remove the redundancies in and between image frames to get smaller bitstreams, second generation schemes like MPEG-4 and MPEG-7 aim at doing content-based coding and interactivity. To reach th ...

2001

Adaptive Entropy-Constrained Matching Pursuit Quantization

Pascal Frossard, Pierre Vandergheynst

This paper proposes an adaptive entropy-constrained Matching Pursuit coefficient quantization scheme. The quantization scheme takes benefit of the inherent properties of Matching Pursuit streams where coefficients energy decreases along with the iteration ...

EUSIPCO2001

Extension of Wavelet Compression Algorithms to 3D and 4D Image Data: Exploitation of Data Coherence in Higher Dimensions Allows Very High Compression Ratios

Michaël Unser

High resolution multidimensional image data yield huge datasets. For compression and analysis, 2D approaches are often used, neglecting the information coherence in higher dimensions, which can be exploited for improved compression. We designed a wavelet c ...

SPIE2001

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