A study of lhe relations between the perceptive similarity of voices and physical measures of the speech signal has been carried out. The goal of this study was to identify a set of acoustic parameters which contribute mosl to the voice discrimination process. We worked on a corpus of Iogatoms CVCV. Ten male speakers uttering nine items were considered and a single sample of each item was used....

In this paper we present some analysis techniques and indexing strategies aimed to support classification and retrieval of textures using only perceptual features. The goal of this research is to provide a visual system that starting from graphical cues representing relevant perceptual features of texture, interactively searches the most similar texture in the set of candidates in the correspon...

This paper explains methods to provide autonomous virtual humans with the skills necessary to perform stand-alone role in films, games and interactive television. We present current research developments in the Virtual Life of autonomous synthetic actors. After a brief description of our geometric, physical, and auditory Virtual Environments, we introduce the perception action principles with a...

Finding and classifying specific objects is a key part in most of the tasks autonomous systems could face. Properly being able to reach objects and find their exact location is very important for successfully achieving higher level robotic behaviors. To perform full object detection and recognition tasks in a wide environment several perception approaches need to be brought together to achieve ...

Virtual environments have great potential in applications such as entertainment, animation by example, design interface, information browsing, and even expressive performance. In this paper we describe an approach to unencumbered, natural interfaces called Perceptive Spaces with a particular focus on efforts to include true multi-modal interface: interfaces that attend to both the speech and ge...

We estimated ideological preferences of 3.8 million Twitter users and, using a data set of nearly 150 million tweets concerning 12 political and nonpolitical issues, explored whether online communication resembles an “echo chamber” (as a result of selective exposure and ideological segregation) or a “national conversation.” We observed that information was exchanged primarily among individuals ...