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Motion Doodles : An Interface for Sketching Character Motion

Motion Doodles : An Interface for Sketching Character Motion. Outline. Introduction Contributions Character Sketching Motion Sketching Conclusion. Introduction. Interactive animation system Draw simple character –Body , head , arms , legs , feet Easy “draw” motion

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Motion Doodles : An Interface for Sketching Character Motion

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  1. Motion Doodles : An Interface for Sketching Character Motion

  2. Outline • Introduction • Contributions • Character Sketching • Motion Sketching • Conclusion

  3. Introduction • Interactive animation system • Draw simple character –Body , head , arms , legs , feet • Easy “draw” motion • Gestures are highly visual in nature

  4. Contribution • Design a set of continuous gestures for sketching –Motions , locations , timing –Put onto variety of display device • Easy to sketch a 2D character and then draw a variety of animated motion

  5. Character Sketching • Assumptions –7 links : head , torso , upper arm , lower arm , upper leg , lower leg , foot –Each link is one continuous stroke –Draw links in any order , links can intersect –Surface detail : thumb , pot-belly , nose

  6. 7 sketched links →Compute major and minor axes → OBB (Oriented bounding box) → Compute joint location → Compute skeleton

  7. Motion Sketching • Motion sketching needs: –Type of Motion –Spatial location of Motion –Extent of Motion –Timing of Motion • Cursive gesture

  8. Gesture vocabulary design principles • Gesture should be cursive • Limited number easy-to-draw gestures • Allow forwards or backwards • Similar motion , similar gesture • Allow for the generation of stylistic variations

  9. Sketch Segmentation • 3 stages 1.Tokenization stage –Produce a corresponding list of token 2.Parsing stage –Identify the set of admissible gestures 3.Identification stage –Identify the specific motions to be generated

  10. Conclusion • Highly-accessible means for users to create a certain class of character animations • User rapidly learned the gesture vocabulary and enjoy it

  11. End Thank you for listening

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