Title
Knowing when to put your foot down
Abstract
Footskate, where a character's foot slides on the ground when it should be planted firmly, is a common artifact resulting from almost any attempt to modify motion capture data. We describe an online method for fixing footskate that requires no manual clean-up. An important part of fixing footskate is determining when the feet should be planted. We introduce an oracle that can automatically detect when foot plants should occur. Our method is more accurate than baseline methods that check the height or speed of the feet. These baseline methods perform especially poorly on noisy or imperfect data, requiring manual fixing. Once trained, our oracle is robust and can be used without manual clean-up, making it suitable for large databases of motion. After the foot plants are detected we use an off-the-shelf inverse kinematics based method to maintain ground contact during each foot plant. Our foot plant detection mechanism coupled with an IK based fixer can be treated as a black box that produces natural-looking motion of the feet, making it suitable for interactive systems. We demonstrate several applications which would produce unrealistic motion without our method.
Year
DOI
Venue
2006
10.1145/1111411.1111420
SI3D
Keywords
Field
DocType
foot plant detection mechanism,imperfect data,unrealistic motion,foot slide,online method,foot plant,black box,motion capture data,ground contact,inverse kinematics
Black box (phreaking),Computer vision,Motion capture,Computer graphics (images),Inverse kinematics,Computer science,Oracle,Artificial intelligence,Motion synthesis
Conference
ISBN
Citations 
PageRank 
1-59593-295-X
34
2.23
References 
Authors
21
3
Name
Order
Citations
PageRank
Leslie Ikemoto184233.73
Okan Arikan2158877.78
D. A. Forsyth392271138.80