Occlusion or transparency

Basket includes a transparency effect obtained by the superposition of two textures, generated by gestures with different directionalities. Brightness and figural organization is an ambiguous image: the vertical rectangle can be perceived as an opaque background surface, partially visible through the six holes of the big rectangle, or as a transparent foreground surface, placed in front of a big rectangle with black disks. The occurrence of phenomenal transparency is associated to the formation of anomalous contours separating two zones of the big rectangle, with different brightnesses despite their physical homogeneity. Brightness and transparency demonstrates that the appearance of transparent zones does not simply depend on the equalization between adjacent colors: in the absence of figural conditions supporting transparency, the central white zone is rather contrasted by adjacent black zones.