Signal and Image Processing Institute, University of Southern California, Los Angeles, California, USA.|Signal and Image Processing Institute, University of Southern California, Los Angeles, California, USA.|Signal and Image Processing Institute, University of Southern California, Los Angeles, California, USA.|Signal and Image Processing Institute, University of Southern California, Los Angeles, California, USA.|Signal and Image Processing Institute, University of Southern California, Los Angeles, California, USA.|Signal and Image Processing Institute, University of Southern California, Los Angeles, California, USA.|Signal and Image Processing Institute, University of Southern California, Los Angeles, California, USA.