Motions Rationality

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Motions Rationality

• Speaker ???
• Advisor I-Chen Lin

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Outline

• Introduction
• Related Work
• Future Work

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Introduction

• Motivation
• Motion capture data is widely used in movie and
  game industries
• But it is expensive and labor-intensive
• The reuse of human motion capture data has become
  an important issue

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Introduction cont.

• Using blending, editing, and sequencing to
  produce rich, realistic character animation
• Output sometimes appears unnatural
• or violates the physical law

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Introduction

• Goal
• Define a cost function to determine whether a
  motion is reasonable or not

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Related Work

• Snap-together Motion Assembling Run-Time
  Animations (Gleicher 03)

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Related Work

• Splicing upper-body actions with locomotion (Heck
  06)

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Related Work

• Perceptual Metrics for character animation
  Sensitivity to errors in ballistic motion (Paul
  03)
• Subjects found added acceleration easier to
  detect than added deceleration
• Subjects found low gravity easier to detect than
  high gravity
• Subjects found errors in horizontal velocities
  easier to detect than errors in vertical
  velocities

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Related Work

• A data-driven approach to quantifying natural
  human motion (Liu 05)
• Select the statistical model (MoG?HMM?SLDS)
• Fit the model parameters using natural human
  motions as training data
• Compute a score for a novel input motion

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Future Work

• Divide the character into three components

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Future Work
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• Thank you for your attention
• Questions?