A COMPARISON AND EVALUATION OF MOTION INDEXING ...

Animation techniques can be broadly classified as Traditional Animation, Stop
Animation and Computer Animation.Traditional Animation, also known as classical
animation or hand-drawn animation, is a technique in which each frame is hand
drawn. It is historically popular and was used for most animated films of the 20th
century. The individual frames of these films are photographs of drawings, which
are first drawn on paper. Few examples of traditional animation are full animation,
limited animation, rotoscoping and live action animation.
Stop Animation is a technique which utilizes physically manipulated objects such
as puppets and props to create action. This object changes in small increments
between the frames, creating the illusion of a motion when the series of frames is
played as a continuous sequence. Sometimes, clay figures are also used to create this
type of animation and such technique is called clay animation. Various types of clay
animation include Puppet animation, cutout animation, object animation and model
animation.
Before computer systems came into existence the whole process of animation was
tedious and time consuming. With the use of computers the frame redrawing labor
had been minimized since, copying and pasting duplicate elements between successive
frames is very efficient. Computer Animation, also known as CGI animation, is a
technique which uses a computer to generate motion. The illusion of motion is created
by displaying an image on computer screen repeatedly. Each time the previous image
is replaced by a new image that is similar to the previous, but advanced slightly in
the time domain. The two main types of computer animation are 2D animation and
3D animation.
2-D computer animation refers to creating a notion of movement in a two dimensional
space using 2-D bitmap graphics or vector graphics. This method considers only 2
dimensions namely X and Y. 2-D computer animation is a digital version of the earlier
65