Videos tagged with DSP

A sensor network is a spatio-temporal sampling device with a wireless communications infrastructure. In this talk, after a short overview of the Center on Mobile Information and Communication Systems, where large scale ad hoc and sensor networks are being studied, we will address the following questions related to large sensor networks and their applications in environmental monitoring.1. The s...

Google Tech Talks March, 25 2008 ABSTRACT This talk is about discovering and modeling previously unspecified, recurring themes in a given set of arbitrary images. Given a set of images, each containing frequent occurrences of objects from multiple categories, the goal is to learn a compact model of the categories as well as their relationships, for the purposes of later recognizing/segmenting a...

Google Tech Talks March, 26 2008 ABSTRACT Timothee Cour - Research Scientist Movies and TV are a rich source of highly diverse and complex video of people, objects, actions and locales "in the wild". Harvesting automatically labeled sequences of actions from video would enable creation of large-scale and highly-varied datasets. To enable such collection, we focus on the task of recove...

Google Tech Talks September, 21 2007 ABSTRACT Brain and computer were wed mid-twentieth century by the McCulloch-Pitts model neuron and Hodgkin-Huxley equations for digital firing in biological neurons. Since then, brain neurons, synapses, firings and networks have been considered analogous to electronic switches, states and circuits in classical computers. But despite extraordinary advances an...

Google Tech Talks June 27, 2007 ABSTRACT Non-Chronological Video Mosaicing involves the generation of a new video from an input video such that the chronological order of events is not preserved. The freedom from the chronological constraint enables multiple effects that are otherwise impossible: The creation of dynamic panoramic video of a dynamic panoramic scene from a regular camera scanning...

Google Tech Talks June 18, 2007 ABSTRACT "Supersymmetry, Extra Dimensions and the Origin of Mass: Exploring the Nature of the Universe Using PetaScale Data Analysis" The Large Hadron Collider (LHC), scheduled to begin operation in Summer 2008, will collide protons at energies not accessible since the time of the early Universe. The study of the reactions produced at the LHC has the po...

Google Tech Talks April 12, 2007 ABSTRACT Sequential data --- speech, text, genomic sequences --- floods our storage servers. Much useful information in these data is carried by implicit structure: phonemes and prosody in speech, syntactic structure in text, genes and regulatory elements in genomic sequences. Over the last six years, several of us have been investigating structured linear model...

Google TechTalks May 9, 2006 Le Lu Learning Image Patch Representation for Scene Recognition, Object Tracking, and Dynamic Foreground/Background Extraction

Google TechTalks March 24, 2006 Alan Nash ABSTRACT I will discuss two fundamental problems in information integration: how to answer a query over a public interface which combines data from several sources and how to create a single database conforming to the public interface which combines data from several sources. I consider the case where the sources are relational databases, where the publ...

Google Tech Talks March 9, 2007 ABSTRACT This talk describes recent work of the UCLA Center for Image and Vision Science for learning to detect and recognize objects in natural images. This includes a real-time system for detecting text in unconstrained environments. Other examples include unsupervised learning of probabilistic grammars for detecting, recognizing, and segmenting objects.