Two-primary-color lattice group and two-primary-color lattice group based identification method

The invention discloses a two-primary-color lattice group which comprises an m row and n column of lattice group formed by combining lattices in dark and light primary colors. The lattices comprise two-primary-color identification layers which include dark-primary-color identification layers and light-primary-color identification layers, the dark-primary-color identification layers are formed by combining a plurality of hollow prisms with honeycombed ends, and the light-primary-color identification layers are formed by combining a plurality of inverted hollow bottomless pyramids with honeycombed bottom faces. The invention further discloses a two-primary-color lattice group based identification method. Identification contrast and resolution are effectively improved, and the two-primary-color lattice group and the two-primary-color lattice group based identification method are high in accuracy and simpler to implement in computer identification systems. Further, requirements on precision of cameras are lowered