Alberto Signoroni

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—Scalable video coding (SVC) differs form traditional single point approaches mainly because it allows to encode in a unique bit-stream several working points corresponding to different quality, picture size and frame rate. This work describes the current state-of-the-art in SVC, focusing on wavelet based motion-compensated approaches (WSVC). It reviews(More)
In this letter, an efficient morphological wavelet coder is proposed. The clustering trend of significant coefficients is captured by a new kind of multiresolution binary dilation operator. The layered and adaptive nature of the subband dilation makes it possible for the coding technique to produce an embedded bit-stream with a modest computational cost and(More)
In this paper a new fully scalable-wavelet based-video coding architecture is proposed, where motion compensated temporal filtered subbands of spatially scaled versions of a video sequence can be used as base layer for inter-scale predictions. These predictions take place between data at the same resolution level without the need of interpolation. The(More)
(a) SFM (b) E agg Figure 1: View importance as energy heatmap (the more red, the more salient and hence important) as example on Fraumunster SfM cloud. (a) Best1 (b) Best2 (c) Best3 (d) Worst1 (e) Worst2 (f) Worst3 Figure 2: Best and worst views on Notre Dame dataset. Take home message: Reduction and selection of views through structure analysis of 3D point(More)
Aiming at reaching an interactive and simplified usage of high-resolution 3D acquisition systems, this paper presents a fast and automated technique for pre-alignment of dense range images. Starting from a multi-scale feature point extraction and description, a processing chain composed by feature matching and correspondence searching, ranking grouping and(More)