Anaglyph is a visual technique used to create a three-dimensional (3D) effect in images. It involves overlaying two images, one in red and the other in cyan, which represent the left and right eye perspectives. When viewed through special glasses with colored lenses, the brain combines these images, giving the illusion of depth. This method is commonly used in movies, video games, and printed materials to enhance visual experiences. Anaglyph technology is one of the simplest forms of 3D imaging and has been popular since the early 20th century, often associated with 3D cinema and stereoscopic photography.