US 7,457,439 B1
System and method for motion capture
Nels Howard Madsen, Auburn, Ala. (US); Thomas M. McLaughlin, Marietta, Ga. (US); Ronnie J. H. Wilmink, Marietta, Ga. (US); and Robert Michael Glover, Marietta, Ga. (US)
Assigned to Motion Reality, Inc., Marietta, Ga. (US)
Filed on Dec. 14, 2004, as Appl. No. 11/11,696.
Application 11/011696 is a continuation in part of application No. 11/011540, filed on Dec. 13, 2004.
Claims priority of provisional application 60/528666, filed on Dec. 11, 2003.
Claims priority of provisional application 60/528880, filed on Dec. 11, 2003.
Claims priority of provisional application 60/528735, filed on Dec. 11, 2003.
Int. Cl. G06K 9/00 (2006.01); H04N 7/18 (2006.01)
U.S. Cl. 382—107  [348/154; 348/155] 32 Claims
OG exemplary drawing
 
1. A method for capturing motion associated with a subject in real-time, comprising:
defining a plurality of elements, wherein each element corresponds to at least one interconnected segment of the model;
defining a plurality of marker positions, wherein each marker position is associated with an element;
defining a predetermined condition;
defining a value for a variable when the predetermined condition is satisfied, wherein a possible position of a first element is restricted by the value;
for each of a plurality of frames,
predicting locations for the markers, by:
determining whether the predetermined condition is satisfied; and
if the predetermined condition is satisfied, then associating the value with the variable so that the possible position of the first element is restricted; and
measuring locations of the markers; and
determining positions of the elements by comparing the predicted locations for the markers with the measured locations of the markers.