Under certain circumstances the neurons forward these image differences (bottom) rather than the entire image information (upper left). (sciencedaily.com)
Furthermore, the metadata of illustration and image information ensures that pictures and artwork will not be lost in the dungeons of the world wide web. (ingramspark.com)
Simply to make things one step more confusing, some image files (notably, like PNG) contain more image information in an extra channel. (howtogeek.com)