Method of treating passive optical motion to obtain data
A technology for data acquisition and optical movement, applied in image data processing, electrical digital data processing, special data processing applications, etc., can solve problems such as impossible calculation of connection angle, uncertainty of disappearing mark position, and increased burden
Inactive Publication Date: 2003-11-12
THE UNIV OF TOKYO
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Problems solved by technology
[0006] (1) Because there is no reference to the subject's body structure for marking, results that are actually impossible are output
[0007] (2) In the case where the mark disappears, the position of the disappearing mark cannot be determined
[0009] (4) In the step of calculating the connection angle after marking, depending on the algorithm used, it is impossible to calculate the connection angle under the condition that all the marks are always marked regardless of whether the mark disappears or not, thus increasing the cost of the marking step. burden
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[0020] According to the present invention, in the method of processing passive optical motion acquisition data, marking and connection angle calculation are not done independently, but simultaneously. That is, marking and connection angle calculation are connected into a loop, and the position of the mark is estimated from the posture of the whole body obtained by each connection angle calculation, and provided as reference information feedback for next marking. Hereinafter, the present invention will be explained in detail.
[0021] A joint angle calculation is used for a motion model of a subject whose motion is to be determined, a CG feature, or a human-like body model. Virtual markers are placed on the kinematic model and the individual joints are moved in such a way that the virtual markers overlap as much as possible on the actual calculated and made markers to determine the pose of the whole body. Whether the connection angle calculation requires all marker coordinates...
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In a method of processing passive optical motion capture data having: an image capture step for capturing synchronized multiple camera images of a subject with passive optical markers; a three-dimensional reconstruction step for obtaining a set of three-dimensional coordinates of the markers from the picked-up data; a labeling step for deciding temporal correspondence between the markers in the subsequent captures and, thereby, locating the body part of the subject to which the markers are attached; and a joint angle calculation step for deciding an angle of each joint of a kinematic model to which the motion of subject is projected, on the basis of a set of labeled markers and computing a posture of the subject, the labeling step and the joint angle step are coupled as a loop and are performed simultaneously.
Description
technical field [0001] The invention relates to a method for processing data acquired by passive optical movement, comprising: an acquisition step of acquiring a synchronous multi-camera image of an object with a passive optical marker; a three-dimensional reconstruction step of obtaining a set of three-dimensional coordinates of the marker from the acquired data a marking step, determining the time correspondence between the markings in the continuous acquisition, thereby determining the position of the body part of the subject with the marking; and a connection angle calculation step, based on a set of markings, determining the The angle of each connection of the motion model to which the subject motion is projected, and the pose of the subject is calculated. Background technique [0002] Figures 2a-2d are schematic diagrams respectively representing the processing steps of a known method for processing passive optical motion acquisition data. First, the subject is marked...
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Login to View More IPC IPC(8): G06T7/20G06T15/70
CPCG06T2207/10016G06T7/2046G06T7/20G06T2207/30204G06T2207/30196G06T7/251
Inventor 中村仁彦山根克栗原一贵铃木一郎
Owner THE UNIV OF TOKYO