N
two almost identical pictures, or one special picture, that when viewed through special glasses or a stereoscope form a single three-dimensional image 立体图 (Also called stereogram)
Thesestereographson street grounds drawn byprofessionalstereographers stroke the tourists with illusioneffects as if they were surrounded inastereoscopicworld.
W. Turner and painters of the Hudson River School, along with watercolors, fragile hand-painted miniature panoramic scrolls, historic tinted photographs, stereographs, prints and even fragments of panoramic wallpapers.