LEAR is part of the GRAVIR/IMAG laboratory, a Joint Research Unit of INRIA, the Centre National de Recherche Scientifique (CNRS), the Institut National Polytechnique de Grenoble (INPG) and the Université Joseph Fourier (UJF). LEAR was created officially on 1st July 2003, but this report summarizes the activities of its members throughout all of 2003.