A Method and Device for Inertial Motion Capture Deformation and Distortion Correction Based on Large Space

Abstract

The invention discloses a method and a device for correcting inertial motion capture deformation and distortion based on a large space. The device comprises a grid division unit, data collection equipment, a space positioning module, a data processing unit and a data correction server, wherein the data processing unit is connected to the data collection equipment, and is used for transmitting magnetic field data of grid nodes to the data correction server in a threading manner; the space positioning module is used for recording positioning information of the grid nodes; a magnetic field data storage module is used for recording magnetometer data inside a gyroscope at the position of each grid node; the data correction server is used for receiving data of the data processing unit and correcting the data of the gyroscope at each spatial position into spatial actual data and then transmitting the spatial actual data to a virtual character for matching. After the device and the method areadopted for correction, the body form in the large space becomes normal, the body form can remain unchanged accurately with arm actions of a tester, and the disadvantages of deformation and distortionare avoided.

Description

technical field [0001] The present invention relates to virtual reality technology, in particular to a large space-based inertial motion capture deformation and distortion correction method and device. Background technique [0002] The underlying hardware used in the existing inertial motion capture technology is the gyroscope, which is used to bind the human skeleton, and then obtain the rotation value of each main bone, thereby simulating the overall movement of the human body; but the gyroscope itself has The disadvantage is that there will be inertial drift, and the drift will increase as the time of use increases. Although it can be calibrated by the magnetometer in the gyroscope, the magnetic field will change in a large space, and the calibration of the magnetometer will be offset. , especially the farther away from the initial position, the greater the deviation, especially in the environment with many metal or electronic devices, the spatial magnetic field fluctuate...

AI Technical Summary

Problems solved by technology

[0002] The underlying hardware used in the existing inertial motion capture technology is the gyroscope, which is used to bind the human skeleton, and then obtain the rotation value of each main bone, thereby simulating the overall movement of the human body; but the gyroscope itself has The disadvantage is that there will be inertial drift, and the drift will increase with the use of time. Although it can be calibrated by the magnetometer in the gyroscope, the magnetic field will change in a large space, and the calibration of the magnetometer will be offset. , especially the farther away from the initial position, the greater the deviation, especially in the environment with many metal or electronic devices, the spatial magnetic field fluctuates greatly under the influence of it, so that serious deviation will occur only if it is far away from the initial position, so the existing The inertial motion capture is limited to use in a small space and an environment with a stable magnetic field, and cannot be used in a large space

[0003] Inertial motion capture products in the domestic and foreign markets are only suitable for use in a small space. Once they are used in a larger space, the gyroscope will drift and distort at a certain distance from the initial position, resulting in the associated virtual character. Movement deformation and limb distortion appear, such as figure 1 As shown: the left and right arms of the tester are extended flat, and the left arm of the corresponding virtual character is severely twisted and folded. Therefore, the existing technology has defects and needs to be improved

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