FIG. 13.

Impact of noise texture on the conspicuity of bar patterns. From left to right, each column corresponds to images with isotropic, vertical, horizontal, and diagonal noise textures, respectively. These noise textures correspond to NPSs with s, p_x, p_y, and d_xy-wave symmetry, respectively. The top row shows noise-only images; images in the second, third, fourth, and fifth row contain a bar pattern oriented along the vertical, horizontal, right diagonal, and left diagonal direction, respectively; the bottom row contains two orthogonal diagonal bar patterns. The golden squares highlight the cases in which we believe bar pattern visibility was compromised the most. (See color online version.)