3 # nombre textures
 0.039349 img/pb_tex_a_face.pnm pts/pb_tex_a.txt pos/pb_tex_a_face.txt # poids, texture, position 3D puis 2D
 0.041191 img/pb_tex_afa_face.pnm pts/pb_tex_afa.txt pos/pb_tex_afa_face.txt
 0.039288 img/pb_tex_upu_face.pnm pts/pb_tex_upu.txt pos/pb_tex_upu_face.txt
