Image and video technology -- PSIVT 2013 workshops : GCCV 2013, GPID 2013, PAESNPR 2013, and QACIVA 2013 : Guanajuato, Mexico, October 28-29, 2013 : revised selected papers : 6th Pacific-Rim symposium on image and video technology : PSIVT 2013 workshop : 6th Pacific Rim symposium on video and image technology : PSIVT conference : Oct 2013, Guanajuato, Mexico.