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)
Counting bacterial colonies on microbiological culture plates is a time-consuming, error-prone, nevertheless fundamental task in microbiology. Computer vision based approaches can increase the efficiency and the reliability of the process, but accurate counting is challenging, due to the high degree of variability of agglomerated colonies. In this paper, we(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)
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)