Keynote SpeakersFabio Babiloni![]()
He is an Associate Editor of four scientific Journals "Frontiers in Neuroscience", "International Journal of Bioelectromagnetism","IEEE Trans. On Neural System and Rehabilitation Engineering", and "Computational Intelligence and Neuroscience".
Abstract: Brain Computer Interfaces (BCI) is an area of research that is rapidly growing in the neuroscience and bioengineering fields. One popular approach to the generation of a BCI system consist in the recognition by a computer of the patterns of electrical activity on the scalp gathered from a series of electrodes. One of the problem related to the use of surface EEG is the blurring effect due to the smearing of the skull on the transmission of the potential distribution from the cerebral cortex toward the scalp electrodes. This happens since the skull has a very low electric conductivity when compared with the scalp or the brain ones. The blurring effect makes the EEG data gathered from the scalp electrodes rather correlated, a problem not observed in the cortical EEG data recorded from the invasive implants in monkeys and man. Such correlation makes problematic the work of the classifiers, since the features extracted from the different scalp electrodes tends to be rather similar and this correlation is hard to be disentangled with blind methods like Principal Component Analysis. In these last decade, high-resolution EEG technologies have been developed to enhance the spatial information content of EEG activity. Furthermore, since the ultimate goal of any EEG recording is to provide useful information about the brain activity, a body of mathematical techniques, known as inverse procedures, have been developed to estimate the cortical activity from the raw EEG recordings. Examples of these inverse procedures are the dipole localization, the distributed source and the cortical imaging techniques. Inverse procedures could use linear and non linear techniques to localize putative cortical sources from EEG data, by using mathematical models of the head as volume conductor. More recently, it has been suggested that with the use of the modern high resolution EEG technologies it could be possible to estimate the cortical activity associated to the mental imagery of the upper limbs movements in humans better than with the scalp electrodes. In this presentation we will review main achievements in the field of the Brain Computer Interfaces and we will demonstrate how it is possible run a BCI system able to drive and control several electronic and robotic devices in a house environment. In particular, we first describe a BCI system used on a group of normal subjects in which the technology of the estimation of the cortical activity is illustrated. Then, we used the BCI system for the command of several electronic devices within a three rooms environment employed for the neurorehabilitation. Xiangjian He![]()
Abstract: License plate recognition usually consists of three processes: license plate detection, character segmentation and character recognition. License plate recognition algorithms usually work under restricted conditions such as controlled lights, fixed backgrounds, designated moving routes and limited vehicle speeds. In this talk, I will briefly review the existing and related works on license plate recognition. Then, I will present an approach for license plate recognition under flexible conditions. For license plate detection, in this approach, both global edge features and local Haar-like features are applied to construct a cascaded classifier consisting of 6 layers with 160 features. For license plate recognition, an open source OCR is modified and used after a character segmentation process. The algorithm for segmentation is based on the connected component algorithms. This approach is efficient and can be applied in real-time applications. Unlike other approaches built on either fixed image backgrounds or fixed cameras, this approach does not use any inter-frame information and pre-knowledge. Xiaoming Li![]()
Abstract: Much like a black hole, the Web, since its birth, has been absorbing all sorts of data (information) around the globe, ever generated along the path of human civilization. On the other hand, the digitized and networked (webbed) nature of web data, which generally means "easy to access", gives rise to much imagination on re-discovering, re-engineering, and re-using of the oceanic information. There are unlimited directions to take for Web related research. In this talk, I'll address issues related to "Size, Shape, and Search of WWW". Starting from how people estimate the size of the Web, we provide a law of growth based on an empirical study for Chinese Web. In the study, the Web is viewed as a service and the duration between creation and deletion of a web page is viewed as service time. With an assumption of exponential service time, the study resulted in a model of growth, applied to Chinese Web, which has been verified by CCNIC survey data for several years. In terms of shape, we discuss a result based on a crawl of 830 million web pages, which shows the evidence of a "Tea Pot", instead of "Bow Tie" as people generally assume. For search, I'll first introduce Web InfoMall (http://www.infomall.cn), the Chinese web archive we have been constructing since 2001. And one can easily realize a step beyond the web archive, namely searching and more accurately mining based on Web InfoMall, to make use of the data in the web archive. With a web archive and associated capability, "web mining" here has a more or less different meaning, which spans from the structure analysis of the web to named entity and relation extractions, from spatial (if we consider URL as a space) information discovery to temporal information exhibition. I'll show some unique examples along this line, including HisTrace (a search facility based on Web InfoMall) and Tianwang Digest for Olympics 2008 (an event analysis system with Beijing Olympics as an instance). |






















