The group has a long and extended expertise within the field of signal processing and computer vision including audio/image/video/3D data. Investigation activity has been devoted to the acquisition of 2D images, the optimization of 3D imaging sensors, the compression of 2D/3D video signals, as well as to their visualization (perceptual analysis of multimedia) and their authentication (multimedia forensics).
Alternating direction method of multipliers (ADMM) approaches for non-convex distributed optimization problems. We are interested in identifying efficient methods to solve a (non convex) minimization problem in a fully decentralized way, that is in such a way that only local parameters exchanges between neighbor nodes or neighbor regions are allowed.
The research activity covers several aspects of the image, video and 3D data processing, analysis and coding. In particular, the research group is active on several aspects of the acquisition, processing and coding of three-dimensional representations.
Polarization-sensitive optical coherence tomography (PS-OCT) is an imaging technique that allows non-invasive in-depth imaging of biological specimens. In particular, the sensitivity to polarization allows to increase the imaging contrast of specific tissues, like muscles; moreover, the optical-fiber implementation of PS-OCT is particularly robust and versatile. The topics covered by the research activity are the following:
Nonlinear effects in optical fibers enable several kind of all-optical signal processing, ranging from amplification to filtering. In particular, the research activity focuses on the following topics:
Optical fibers can act as sensors, because they are intrinsically sensitive to (among the others) temperature, strain and magnetic fields. Beside enabling the multiplexing of several tens of discrete sensors, optical fibers sensors have the unique ability of performing distributed monitoring, where the physical field under analysis can be measured over the entire length of the fiber (up to several kilometers) with spatial resolution ranging from few centimeters to few meters The research activity covers the following topics:
