Portuguese Meeting on Computer Graphics 2001

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Wavelet Compression and Transmission of Deformable Surfaces over Networks
(The Eurographics Association, 2022) Calado Lopes, António; Gamito, Manuel; Salles Dias, José Miguel; Joaquim Madeira; Jorge Salvador Marques; Miguel Salles Dias; Joaquim A. Jorge
An animation of a deformable surface with fixed topology is formed by a set of connected points (particles), which follow a trajectory over time. The transmission of such an animation is a task that consumes large amounts of bandwidth, as the position of each particle, in each time instant, needs to be transmitted. We propose a wavelet based compression and streaming mechanism that allows the minimization of the size of the animation data, hence decreasing the total transmission time. The proposed transmission scheme, based on the timelocalized feature of the wavelet transform, will be able to stream the animation so that a receiver can immediately view the fraction of the animation received, while wavelet coefficients are still arriving.