Saturday 2 June 2012

Animated Wallpapers

Animated Wallpapers Biography:
Animation refers to the recording of any image which goes through changes over time to portray the illusion of motion. This is usually accomplished with a camera and a projector or a computer viewing screen which can rapidly cycle through images in a sequence. Animation can be made with either hand rendered art, computer generated imagery, or three-dimensional objects, e.g. puppets or clay figures, or a combination of techniques. The position of each object in any particular image relates to the position of that object in the previous and following images so that the objects each appear to fluidly move independently of one another. The viewing device displays these images in rapid succession, usually 24, 25 or 30 frames per second.
Early Approaches to Motion in Art
Evidence of artistic interest in depicting figures in motion can be seen as early as Paleolithic cave paintings. Animals in these paintings were often depicted with multiple sets of legs in superimposed positions. Because these paintings are prehistoric they could be explained a number of ways, such as the artist simply changing their mind about the leg’s position with no means of erasing, but it’s very likely that they are early attempts to convey motion.
Another example includes a 5,200-year old earthen bowl found in Iran in Shahr-e Sukhteh. The bowl has five images painted along the sides, showing phases of a goat leaping up to nip at a tree. An Egyptian mural, found in the tomb of Khnumhotep and Niankhkhnum, at the Beni Hassan cemetery includes a sequence of images in temporal succession. The paintings are approximately 4000 years old and show scenes of young soldiers being trained in wrestling and combat.
Egyptian burial chamber mural.
Seven drawings by Leonardo da Vinci (ca. 1510) extending over two folios in the Windsor Collection, "Anatomical Studies of the Muscles of the Neck, Shoulder, Chest, and Arm", show detailed drawings of the upper body with a less-detailed facial image. The sequence shows multiple angles of the figure as it rotates and the arm extends. Because the drawings show only small changes from one image to the next, the drawings imply motion in a single figure.
Even though some these early examples may appear similar to an animated series of drawings, the lack of equipment to show them in motion causes them to fall short of being true animation. The process of illustrating the passing of time by putting images in a chronological series is one of the most important steps in creating animation so historic instances of this practice are definitely notable.
 Animation before film
Numerous devices which successfully displayed animated images were introduced well before the advent of the motion picture. These devices were used to entertain, amaze and sometimes even frighten people. The majority of these devices didn’t project their images and accordingly could only be viewed by a single person at any one time. For this reason they were considered toys rather than being a large scale entertainment industry like later animation. Many of these devices are still built by and for film students being taught the basic principles of animation.
 The magic lantern(c1650)
The magic lantern is an early predecessor of the modern day projector. It consisted of a translucent oil painting and a simple lamp. In a darkened room, the image would appear projected onto an adjacent flat surface. It was often used to project demonic, frightening images in order to convince people that they were witnessing the supernatural. Some slides for the lanterns contained moving parts which makes the magic lantern the earliest known example of projected animation. The origin of the magic lantern is debated, but in the 15th century the Venetian inventor Giovanni Fontana published an illustration of a device which projected the image of a demon in his Liber Instrumentorum. The earliest known actual magic lanterns are usually credited to Christiaan Huygens or Athanasius Kircher.

 Thaumatrope (1824)
A thaumatrope was a simple toy used in the Victorian era. A thaumatrope is a small circular disk or card with two different pictures on each side that was attached to a piece of string or a pair of strings running through the centre. When the string is twirled quickly between the fingers, the two pictures appear to combine into a single image. The thaumatrope demonstrates the Phi phenomenon, the brain's ability to persistently perceive an image. Its invention is often credited to Sir John Herschel. John A. Paris popularized the invention when he used one to illustrate the Phi phenomenon in 1824 to the Royal College of Physicians.

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