Advanced Computer Animation Techniques Quiz

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What is a common way to do facial animation using targets and morph interpolation?

Using phoneme shapes to do lip sync (correct)
Animating the important intonations
Placing markers on the face for motion capture
Storing and retrieving facial expressions in a library

What is the purpose of a library of key expressions in facial animation?

Storing and retrieving many facial expressions (correct)
Placing markers on the face for motion capture
Capturing eyeball motion
Animating the important intonations

What is usually obtained with a face tracker and markers on the face in facial motion capture?

Eyeball motion data
Markers for lip key positions
Facial motion capture data (correct)
Markers for facial expressions

What is common to combine with motion capture data in facial animation?

Other facial animation techniques (D) Signup and view all the answers

What was the model in Fig 9.3.3 captured with in the Vicon system?

80 markers and 45 control points (B) Signup and view all the answers

Facial motion capture data

is usually obtained with a face tracker and markers on the face. The number and placement of sensors and markers in a face tracker varies from system to system. Special contact lenses can be placed on the eyes to capture eyeball motion. It is common to combine motion capture data with other facial animation techniques because often the motion capture data is not sufficient to generate well-defined expressions. Signup and view all the answers

Match the following animation techniques with their descriptions:

Morph Target animation = Using targets and morph interpolation to keyframe specific emotions Facial motion capture = Usually obtained with a face tracker and markers on the face Library of key expressions = Simple and convenient way to store and retrieve many facial expressions Motion transitions between facial expressions = Checked for details in the interpolation that may look unnatural and distracting Signup and view all the answers

Match the following facial animation components with their functions:

Simplified phonemes used as morph targets = Set of simplified phonemes used as morph targets Libraries of lip key positions and facial expressions = Allows animators to place keyframes in the animation while viewing a graphic representation of the soundtrack Special contact lenses for facial motion capture = Placed on the eyes to capture eyeball motion Combining motion capture data with other facial animation techniques = Additional animation detail built on top of the motion capture data Signup and view all the answers

Match the following numbers with their corresponding components in facial motion capture:

80 markers and 45 control points = The model captured in the Vicon system Number and placement of sensors and markers = Varies from system to system Markers on the face = Used to obtain facial motion capture data Combining motion capture data with other facial animation techniques = Often the motion capture data is not sufficient to generate well-defined expressions Signup and view all the answers

Match the following descriptions with their corresponding animation components:

Synching the lips to the dialogue = Best to focus on animating the important intonations Using targets and morph interpolation = Common way to do facial animation Retrieving many facial expressions = Simple and convenient way to store and retrieve many facial expressions Facial animation interface = Allows animators to place keyframes in the animation while viewing a graphic representation of the soundtrack Signup and view all the answers

Match the following statements with their corresponding animation components:

Checking motion transitions between facial expressions = Details in the interpolation that may look unnatural and distracting Obtaining facial motion capture data = Usually done with a face tracker and markers on the face Placing special contact lenses on the eyes = To capture eyeball motion Combining motion capture data with other animation techniques = Additional animation detail built on top of the motion capture data Signup and view all the answers