TY - RPRT TI - A multi-layer sparse coding network learns contour coding from natural images. AU - Patrik O Hoyer AU - Aapo Hyvärinen PY - 2002 DO - 10.1016/s0042-6989(02)00017-2 UR - https://pubmed.ncbi.nlm.nih.gov/12074953/ ID - 12074953 ER -