Assist. Lecturer Safeen H. Rasool Faculty of SCIENCE IT Dept.

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Presentation transcript:

Assist. Lecturer Safeen H. Rasool Faculty of SCIENCE IT Dept. Multimedia System Assist. Lecturer Safeen H. Rasool Faculty of SCIENCE IT Dept.

Animation Animation is the process of making the illusion of motion and the illusion of change by means of the rapid succession of sequential images that minimally differ from each other.  It can add great power to our multimedia projects. Animation is created from drawn pictures unlike video which is created using a real time visuals.

History of Animation 50 years ago Walt Disney create animation object like Mickey Mouse.

Animation Persistence of Vision -biological phenomenon an object seen by the human eye remains mapped on the retina for a brief time after viewing. Causes the visual illusion of movement, when images change slightly and rapidly

Principles of Animation The word animation is from “Animate” which means to bring to life. Television video creates 30 frames per second Movies are shot at a rate of 24 frames per second and replayed at 48 frames per second Both are used to create motion and animation

Animation Technique Performance motion and motion capture Traditional animation (frame by frame) Path animation or Key frame Rotoscoping

Motion capture and Performance motion Is the process of recording the movement of objects or people.  It refers to record an action of human actors, and using that information to animate digital character models in 2D or 3D. When it includes face and fingers or captures subtle expressions, it is often referred to as performance capture.

Motion capture and Performance motion

Advanced Motion capture offers several advantages over traditional computer animation of a 3D model: More rapid, even real time results can be obtained. In entertainment applications this can reduce the costs of keyframe-based animation. The amount of work does not vary with the complexity or length of the performance to the same degree as when using traditional techniques Complex movement and realistic physical. The amount of animation data that can be produced within a given time is extremely large when compared to traditional animation techniques.

Markers Passive markers: Passive optical system use markers coated with a retro reflective material to reflect light that is generated near the cameras lens. The camera's threshold can be adjusted so only the bright reflective markers will be sampled, ignoring skin and fabric. Active marker: Active optical systems triangulate positions by illuminating one LED at a time very quickly or multiple LEDs with software to identify them by their relative positions, Rather than reflecting light back that is generated externally, the markers themselves are powered to emit their own light.

Software used for motion capture Prime 41, Prime 17W, Flex 13, Slim 13E, eSync, OptiHub …..etc.

Traditional Animation or Cel Animation Traditional Animation, (or Classical Animation, Cel animation, or hand-drawn animation) Is an animation technique where each frame is drawn by hand. The technique was the dominant form of animation in cinema until the advent of computer animation.

In the traditional animation process, animators will begin by drawing sequences of animation on sheets of paper perforated to fit the peg bars in their desks, often using colored pencils, one picture or "frame" at a time. A peg bar is an animation tool that is used in traditional (cel) animation to keep the drawings in place. 

Once in-between drawings for a sequence are completed, each drawing is then transferred from paper to a thin, clear sheet of plastic called a Cel.  Cel stands for Celluloid which is a clear sheet with images drown on them. The Cel is usually animate in 24 frame per second, therefore a minute may require as many as 1440 separate frame.

Computers and traditional animation The drawings are composited in a computer program on many transparent "layers" much the same way as they are with cels, and made into a sequence of images which may then be transferred onto film or converted to a digital video format. It is now possible for animators to draw directly into a computer using a graphics tablet, Cintiq or a similar device.

Cintiq

Path animation or Key frame In this technique a storyboard is laid out and then the artists draw the major frames of the animation. Animation  is a drawing that defines the starting and ending points of any smooth transition. Start with keyframes(the firest and last frame)

Path animation or Key frame The series of frames in between the keyframes are drawn in a process called tweening. Tweening required calculating the number of frames between keyframes and the path the actions take. Because only two or three keyframes over the span of a second do not create the illusion of movement, the remaining frames are filled with in-betweens.

Filled By Tweening Start Frame End Frame

Rotoscoping animation Rotoscoping is a technique where images are copied from a moving video into an animation. The animator draws the motion and shape of the object by referring to the video as opposed to imagining in his head. With the help of the rotoscoping one can animate some complex scenes that would be hard to visualize otherwise.

Rotoscoping animation The disadvantage is that one will have to hunt for the exact video that one wants to animate.

Software used for Animation creation Some of the popular software packages used by the companies, schools and individuals all around the globe include: 3Dstudio Max. LightWave3D: Light Wave 3D is another high end PC 3D computer software package Adobe Premiere: Adobe Premiere is a tool that is used to composite Digitized video and apply a variety of transitions and special effects. AliasIWavefront, Animator Studio, Elastic Reality, Soft Image, Strata Studio Pro, Director and Flash