3d animation

Computer animation, or CGI animation, is the process used for generating animated images by usingcomputer graphics. The more general term computer-generated imagery encompasses both static scenes and dynamic images while computer animation only refers to moving images.

Modern computer animation usually uses 3D computer graphics, although 2D computer graphics are still used for stylistic, low bandwidth, and faster real-time renderings. Sometimes, the target of the animation is the computer itself, but sometimes the target is another medium, such as film.

Computer animation is essentially a digital successor to the stop motion techniques used in traditional animationwith 3D models and frame-by-frame animation of 2D illustrations. Computer-generated animations are more controllable than other more physically based processes, such as constructing miniatures for effects shots or hiring extras for crowd scenes, and because it allows the creation of images that would not be feasible using any other technology. It can also allow a single graphic artist to produce such content without the use of actors, expensive set pieces, or props.

To create the illusion of movement, an image is displayed on the computer monitor and repeatedly replaced by a new image that is similar to it, but advanced slightly in time (usually at a rate of 24 or 30 frames/second). This technique is identical to how the illusion of movement is achieved with television and motion pictures.

Some 3d animation techniques are :

1. Inverse Kinematics

This technique mimics the motion of skeleton joints to give the subject an illusion of natural body movement. Hence, this is often used in rigging the subject’s arms and legs. With this, animators could easily make their characters move automatically, as long as they prepared the bone chain properly. This technique allows animators to simplify their animation process and create advanced animations with lesser effort.

2. Fluid Simulation

This method is used to create realistic fluid animation for water, lava, bubbles, and others. Fluid simulation or fluid animation is often used to make special effects for movies, games, and ads. The level of complexity of this method may vary depending on the perceived output.

3. 3D Skeletal Animation

This technique animates an object or a character by laying the surface of the digital sculpture known as skin or mesh as well as the foundation underneath known as the rig or skeleton. This method is often used to produce human-like animations and complex object