A three-dimensional reconstruction method and system for gesture motion

The invention discloses a method and a system for restructuring the motion of a three-dimensional gesture. The method comprises the following steps of: performing region segmentation on a first frame image of an acquired gesture image sequence; generating an affine transformation matrix of each segmentation region; generating projection coefficient from three dimensions to two dimensions; obtaining a three-dimensional gesture model corresponding to the first frame image according to the projection coefficient and the affine transformation matrix; determining a framework node of the obtained three-dimensional gesture model corresponding to the first frame image and the freedom degree of the framework node; and performing simulated annealing particle filtering operation by combining the current frame image based on the framework node and the freedom degree of the framework node of the three-dimensional gesture model corresponding to a front frame image in allusion to follow frame imagesto obtain the three-dimensional gesture model of the current frame image, and thus realizing the restructuring of the three-dimensional gesture. According to the method and the system, the accurate modeling of a three-dimensional hand by using a laser scanner is not required, and the complexity of the motion restructuring process is reduced.