RecPad 2008

Coimbra, Portugal

Programa

10h00 - Palestra pelo Orador Convidado:

Towards Human Sequence Evaluation

• Abstract:
  During the past three decades, important research efforts in computer vision have been focused on developing theories, methods and systems applied to the description of human movements in image sequences. Broadly speaking, in the past the main goal was the estimation of quantitative parameters describing where was motion. Nowadays, the focus is on the analysis of image sequences incorporating cognitive processes which allow to understand recorded movements. That is, the true challenge is the generation of qualitative descriptions about the meaning of motion, therefore understanding not only where, but also why motion is being observed. Towards this end, very few Cognitive Vision Systems (CVS) have been proposed in the literature, which typically encompass topics not only related to computer vision, but also to artificial intelligence and computational linguistics. In this talk we will restrict cognition to assure the generation of plausible semantic interpretations of human movements observed in image sequences. In this context, the term Human Sequence Evaluation (HSE) denotes those transformation processes involved in the textual descriptions of human behaviour from pixel values. Mainly, three co‐operating goals are involved in HSE: (i) a geometric description of the recorded human movements is first obtained; (ii) subsequently, these quantitative parameters are used to instantiate logic predicates; and (iii) textual representations are built upon these conceptual primitives for Natural‐Language (NL) text generation.



• Bio:
  Dr. Jordi Gonzàlez obtained his PhD degree in 2004, from Universitat Autònoma de Barcelona. At present he is a Juan de la Cierva postdoctoral researcher at the Institut de Robòtica i Informàtica Industrial (UPC-CSIC). The topic of his research is the cognitive evaluation of human behaviours in image sequences. The aim is the generation of both linguistic descriptions and virtual environments, which explain those observed behaviours. He has more than 70 publications about his research on active camera control; segmentation and tracking; human action recognition; human behaviour understanding and interpretation; natural language text generation; and automatic behavioural animation. He has also participated as a WP-leader in the European projects HERMES and VIDI-Video, and as a member in the euCognition network. He co-founded the Image Sequence Evaluation research group at the CVC in Barcelona.