no code implementations • 11 Nov 2017 • Baochang Zhang, Shangzhen Luan, Chen Chen, Jungong Han, Wei Wang, Alessandro Perina, Ling Shao
In this paper, we introduce an intermediate step -- solution sampling -- after the data sampling step to form a subspace, in which an optimal solution can be estimated.
no code implementations • ICCV 2017 • Alessandro Perina, Sadegh Mohammadi, Nebojsa Jojic, Vittorio Murino
In particular, we use constrained Markov walks over a counting grid for modeling image sequences, which not only yield good latent representations, but allow for excellent classification with only a handful of labeled training examples of the new scenes or objects, a scenario typical in lifelogging applications.
no code implementations • 16 Dec 2016 • Baochang Zhang, Zhigang Li, Xian-Bin Cao, Qixiang Ye, Chen Chen, Linlin Shen, Alessandro Perina, Rongrong Ji
Kernelized Correlation Filter (KCF) is one of the state-of-the-art object trackers.
no code implementations • 7 Jun 2016 • Shangzhen Luan, Baochang Zhang, Jungong Han, Chen Chen, Ling Shao, Alessandro Perina, Linlin Shen
There is a neglected fact in the traditional machine learning methods that the data sampling can actually lead to the solution sampling.
no code implementations • CVPR 2015 • Baochang Zhang, Alessandro Perina, Vittorio Murino, Alessio Del Bue
The fact that image data samples lie on a manifold has been successfully exploited in many learning and inference problems.
no code implementations • 12 Mar 2015 • Nebojsa Jojic, Alessandro Perina, Dongwoo Kim
The counting grid is a grid of microtopics, sparse word/feature distributions.
no code implementations • 17 Feb 2015 • Cosimo Rubino, Marco Crocco, Alessandro Perina, Vittorio Murino, Alessio Del Bue
We present a novel method to infer, in closed-form, a general 3D spatial occupancy and orientation of a collection of rigid objects given 2D image detections from a sequence of images.
no code implementations • 23 Oct 2014 • Alessandro Perina, Nebojsa Jojic
The space of all possible feature count combinations is constrained both by the properties of the larger scene and the size and the location of the window into it.
no code implementations • NeurIPS 2013 • Alessandro Perina, Nebojsa Jojic, Manuele Bicego, Andrzej Truski
The counting grid \cite{cgUai} models this spatial metaphor literally: it is multidimensional grid of word distributions learned in such a way that a document's own distribution of features can be modeled as the sum of the histograms found in a window into the grid.
no code implementations • CVPR 2013 • Alessandro Perina, Nebojsa Jojic
Recently, the Counting Grid (CG) model [5] was developed to represent each input image as a point in a large grid of feature counts.
no code implementations • 26 Apr 2013 • Alessandro Perina, Nebojsa Jojic
We introduce and we analyze a new dataset which resembles the input to biological vision systems much more than most previously published ones.
no code implementations • NeurIPS 2010 • Nebojsa Jojic, Alessandro Perina, Vittorio Murino
In order to study the properties of total visual input in humans, a single subject wore a camera for two weeks capturing, on average, an image every 20 seconds (www. research. microsoft. com/~jojic/aihs).
no code implementations • NeurIPS 2009 • Alessandro Perina, Marco Cristani, Umberto Castellani, Vittorio Murino, Nebojsa Jojic
Score functions induced by generative models extract fixed-dimension feature vectors from different-length data observations by subsuming the process of data generation, projecting them in highly informative spaces called score spaces.